@import url("/assets/vendor/katex/katex.min.css?v=0fb711c9c7");

/* Chat page */
/* =============================
   AI Chat
============================= */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* AI 页面专用：确认 / 选择 / 提醒弹窗 */
.chat-action-dialog {
  width: min(430px, calc(100vw - 28px));
  max-width: none;
  padding: 0;
  border: 0;
  border-radius: 24px;
  overflow: hidden;
  color: #1d1d1f;
  border: 1px solid rgba(255, 255, 255, 0.52);
  background: rgba(248, 249, 250, 0.76);
  box-shadow: 0 28px 90px rgba(15, 23, 42, 0.22), inset 0 1px 0 rgba(255,255,255,.72);
  -webkit-backdrop-filter: blur(30px) saturate(135%);
  backdrop-filter: blur(30px) saturate(135%);
}

.chat-action-dialog::backdrop {
  background: rgba(15, 23, 42, 0.14);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.chat-action-dialog[open] {
  animation: chat-action-dialog-in 220ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.chat-action-dialog-panel {
  display: grid;
  gap: 0;
  padding: 20px;
}

.chat-action-dialog-header {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
}

.chat-action-dialog-icon {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 14px;
  color: #0879e8;
  background: #eaf4ff;
}

.chat-action-dialog[data-kind="choice"] .chat-action-dialog-icon {
  color: #087c75;
  background: #e7f7f4;
}

.chat-action-dialog[data-tone="warning"] .chat-action-dialog-icon {
  color: #b96500;
  background: #fff2dc;
}

.chat-action-dialog-icon svg {
  width: 20px;
  height: 20px;
}

.chat-action-dialog-heading {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.chat-action-dialog-heading small {
  color: #6e6e73;
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.06em;
}

.chat-action-dialog-heading strong {
  font-size: 17px;
  font-weight: 720;
  letter-spacing: -0.015em;
}

.chat-action-dialog-description {
  margin: 15px 2px 0;
  color: #5f6368;
  font-size: 14px;
  line-height: 1.65;
}

.chat-action-dialog-options {
  display: grid;
  gap: 7px;
  margin-top: 16px;
  max-height: min(330px, 46vh);
  overflow-y: auto;
}

.chat-action-dialog-options[hidden] {
  display: none;
}

.chat-action-dialog-option {
  display: grid;
  width: 100%;
  gap: 3px;
  padding: 12px 13px;
  border: 1px solid #e5e8ed;
  border-radius: 14px;
  color: inherit;
  text-align: left;
  background: #f7f8fa;
  cursor: pointer;
}

.chat-action-dialog-option:hover,
.chat-action-dialog-option:focus-visible {
  border-color: rgba(0, 113, 227, 0.34);
  outline: none;
  background: #eff6ff;
}

.chat-action-dialog-option strong {
  font-size: 14px;
  font-weight: 680;
}

.chat-action-dialog-option small {
  overflow: hidden;
  color: #777b82;
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-action-dialog-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
  margin-top: 20px;
}

.chat-action-dialog[data-kind="reminder"] .chat-action-dialog-actions {
  grid-template-columns: 1fr;
}

.chat-action-dialog[data-kind="choice"] .chat-action-dialog-actions {
  grid-template-columns: 1fr;
}

.chat-action-dialog-open {
  overflow: hidden;
}

.chat-action-dialog-button {
  min-height: 44px;
  padding: 0 16px;
  border: 0;
  border-radius: 13px;
  font-size: 14px;
  font-weight: 680;
  cursor: pointer;
}

.chat-action-dialog-button.is-secondary {
  color: #4f5359;
  background: #eef0f3;
}

.chat-action-dialog-button.is-primary {
  color: #fff;
  background: #0879e8;
}

.chat-action-dialog-button:hover {
  filter: brightness(0.97);
}

.chat-action-dialog-button:focus-visible {
  outline: 3px solid rgba(8, 121, 232, 0.2);
  outline-offset: 2px;
}

:root[data-theme="dark"] .chat-action-dialog {
  color: #f5f5f7;
  border-color: rgba(255,255,255,.14);
  background: rgba(29, 29, 31, 0.78);
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.62);
}

:root[data-theme="dark"] .chat-action-dialog::backdrop {
  background: rgba(0, 0, 0, 0.42);
}

:root[data-theme="dark"] .chat-action-dialog-icon {
  color: #62b0ff;
  background: rgba(41, 151, 255, 0.15);
}

:root[data-theme="dark"] .chat-action-dialog[data-kind="choice"] .chat-action-dialog-icon {
  color: #63d8ca;
  background: rgba(56, 210, 188, 0.14);
}

:root[data-theme="dark"] .chat-action-dialog[data-tone="warning"] .chat-action-dialog-icon {
  color: #ffba57;
  background: rgba(255, 159, 10, 0.16);
}

:root[data-theme="dark"] .chat-action-dialog-heading small,
:root[data-theme="dark"] .chat-action-dialog-description,
:root[data-theme="dark"] .chat-action-dialog-option small {
  color: #a1a1a6;
}

:root[data-theme="dark"] .chat-action-dialog-option {
  border-color: rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.055);
}

:root[data-theme="dark"] .chat-action-dialog-option:hover,
:root[data-theme="dark"] .chat-action-dialog-option:focus-visible {
  border-color: rgba(100, 181, 255, 0.4);
  background: rgba(41, 151, 255, 0.12);
}

:root[data-theme="dark"] .chat-action-dialog-button.is-secondary {
  color: #e5e5e7;
  background: rgba(255, 255, 255, 0.1);
}

:root[data-theme="dark"] .chat-action-dialog-button.is-primary {
  background: #1687ef;
}

@keyframes chat-action-dialog-in {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.98);
  }
}

@media (max-width: 640px) {
  .chat-action-dialog {
    width: calc(100vw - 20px);
    margin: auto 10px max(10px, env(safe-area-inset-bottom, 0px));
    border-radius: 22px;
  }

  .chat-action-dialog-panel {
    padding: 18px;
  }

  .chat-action-dialog-actions {
    margin-top: 17px;
  }

  .chat-action-dialog-button {
    min-height: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .chat-action-dialog[open] {
    animation: none;
  }
}

.chat-main {
  padding-top: 52px;
}

.chat-hero {
  border-radius: var(--radius-xl);
  padding: clamp(30px, 4rem, 54px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 0.34fr);
  gap: 24px;
  align-items: end;
}

.chat-hero h1 {
  font-size: 68px;
}

.chat-hero p {
  max-width: 780px;
  margin: 22px 0 0;
  color: var(--text-muted);
  font-size: 18px;
  line-height: 1.8;
}

.chat-model-card {
  position: relative;
  z-index: 1;
  padding: 22px;
  border: 1px solid var(--control-border);
  border-radius: var(--radius-xl);
  color: #12333b;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.70), rgba(235, 248, 245, 0.52)),
    rgba(255, 255, 255, 0.64);
  box-shadow: var(--control-shadow);
}

.chat-model-card span,
.chat-model-card strong {
  display: block;
}

.chat-model-card span {
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.chat-model-card strong {
  margin-top: 9px;
  font-size: 22px;
}

.chat-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.34fr);
  gap: 20px;
  align-items: start;
}

.chat-shell {
  height: clamp(560px, 72vh, 740px);
  min-height: 0;
  border-radius: var(--radius-xl);
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  overflow: hidden;
}

.chat-toolbar {
  position: relative;
  z-index: 2;
  padding: 18px 20px;
  border-bottom: 1px solid rgba(71, 85, 105, 0.18);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.chat-toolbar span,
.chat-toolbar strong {
  display: block;
}

.chat-toolbar span {
  font-size: 14px;
  font-weight: 900;
}

.chat-toolbar strong {
  margin-top: 4px;
  color: var(--primary-dark);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.chat-toolbar-main {
  min-width: 0;
}

.chat-persona-current {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.chat-persona-current > span:last-child {
  min-width: 0;
}

.chat-persona-current #chatPersonaName {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-persona-avatar {
  flex-basis: 40px;
  width: 40px;
  height: 40px;
  overflow: hidden;
}

.chat-persona-avatar img,
.chat-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.chat-persona-strip {
  position: relative;
  z-index: 2;
  display: flex;
  gap: 8px;
  padding: 10px 16px;
  border-bottom: 1px solid rgba(71, 85, 105, 0.14);
  overflow-x: auto;
  scrollbar-width: none;
}

.chat-persona-strip::-webkit-scrollbar {
  display: none;
}

.chat-persona-chip {
  flex: 0 0 auto;
  display: inline-grid;
  grid-template-columns: 30px minmax(0, auto);
  gap: 8px;
  align-items: center;
  max-width: 220px;
  min-height: 42px;
  padding: 6px 12px 6px 6px;
  border: 1px solid var(--control-border);
  border-radius: 999px;
  color: #12333b;
  background:
    linear-gradient(145deg, rgba(255,255,255,0.68), rgba(235,248,245,0.48)),
    rgba(255,255,255,0.58);
  box-shadow: var(--control-shadow);
  cursor: pointer;
  font: inherit;
  font-weight: 900;
}

.chat-persona-chip img,
.chat-persona-chip .chat-persona-chip-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  object-fit: cover;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, #0f766e, #2563eb);
  font-size: 11px;
}

.chat-persona-chip span:last-child {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-persona-chip.is-active {
  border-color: rgba(15, 118, 110, 0.45);
  background:
    linear-gradient(135deg, rgba(20, 184, 166, 0.22), rgba(37, 99, 235, 0.16)),
    rgba(255,255,255,0.72);
}

.chat-icon-btn {
  width: 38px;
  height: 38px;
  border: 1px solid var(--control-border);
  border-radius: 12px;
  position: relative;
  overflow: hidden;
  color: #0f172a;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.80), rgba(235, 248, 245, 0.56)),
    var(--control-bg);
  box-shadow: var(--control-shadow);
  cursor: pointer;
  font-size: 24px;
  line-height: 1;
  transition: 0.25s ease;
}

.chat-icon-btn:hover {
  transform: translateY(-1px);
  border-color: var(--control-border-hover);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.88), rgba(228, 246, 242, 0.64)),
    var(--control-bg-hover);
}

.chat-options {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: calc(100% + 12px);
  z-index: 5;
  padding: 12px;
  border: 1px solid rgba(71, 85, 105, 0.16);
  border-radius: var(--radius-xl);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.86), rgba(235, 248, 245, 0.72)),
    rgba(255, 255, 255, 0.84);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.78),
    0 18px 40px rgba(15, 23, 42, 0.14);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px) scale(0.98);
  transform-origin: bottom left;
  transition:
    opacity 0.2s ease,
    transform 0.22s ease;
}

.chat-options.is-open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.chat-option {
  min-height: 38px;
  padding: 7px 12px 7px 8px;
  border: 1px solid var(--control-border);
  border-radius: var(--radius-lg);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #12333b;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.72), rgba(235, 248, 245, 0.50)),
    rgba(255, 255, 255, 0.62);
  box-shadow: var(--control-shadow);
  cursor: pointer;
  font-size: 13px;
  font-weight: 900;
  line-height: 1;
  user-select: none;
}

.chat-option input {
  width: 18px;
  height: 18px;
  accent-color: #0f766e;
  cursor: pointer;
}

.chat-log {
  position: relative;
  z-index: 1;
  min-height: 0;
  padding: 22px;
  overflow-y: scroll;
  display: flex;
  flex-direction: column;
  gap: 16px;
  scroll-behavior: smooth;
  scrollbar-gutter: stable;
}

.chat-log::-webkit-scrollbar {
  width: 10px;
}

.chat-log::-webkit-scrollbar-track {
  background: rgba(15, 23, 42, 0.04);
  border-radius: 999px;
}

.chat-log::-webkit-scrollbar-thumb {
  border: 2px solid transparent;
  border-radius: 999px;
  background: rgba(15, 118, 110, 0.34);
  background-clip: padding-box;
}

.chat-log::-webkit-scrollbar-thumb:hover {
  background: rgba(8, 145, 178, 0.48);
  background-clip: padding-box;
}

.chat-message {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  max-width: 82%;
}

.chat-message.user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.chat-message.source-message {
  max-width: min(72%, 680px);
  margin-top: -8px;
}

.chat-message.source-message .chat-avatar {
  opacity: 0;
}

.chat-message.source-message .chat-bubble {
  border-radius: var(--radius-lg);
  color: var(--text-muted);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.52), rgba(235, 248, 245, 0.34)),
    rgba(255, 255, 255, 0.46);
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.06);
  font-size: 13px;
}

.chat-avatar {
  flex: 0 0 38px;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-lg);
  display: grid;
  place-items: center;
  color: #ffffff;
  background: linear-gradient(135deg, #0f766e, #2563eb);
  font-size: 13px;
  font-weight: 900;
}

.chat-avatar.is-image {
  overflow: hidden;
  background: rgba(255, 255, 255, 0.56);
  color: transparent;
}

.chat-message.user .chat-avatar {
  background: linear-gradient(135deg, #e11d48, #f59e0b);
}

.chat-bubble {
  padding: 14px 16px;
  border: 1px solid var(--control-border);
  border-radius: var(--radius-lg);
  border-top-left-radius: 6px;
  color: #203043;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.70), rgba(235, 248, 245, 0.52)),
    rgba(255, 255, 255, 0.68);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.74),
    0 10px 24px rgba(15, 23, 42, 0.08);
}

.chat-message.user .chat-bubble {
  border-top-left-radius: 18px;
  border-top-right-radius: 6px;
  color: #ffffff;
  border-color: rgba(14, 116, 144, 0.52);
  background: linear-gradient(135deg, #0f766e, #0891b2);
}

.reasoning-box {
  margin: 0 0 12px;
  border: 1px solid rgba(100, 116, 139, 0.28);
  border-radius: 12px;
  color: #64748b;
  background: rgba(100, 116, 139, 0.10);
  overflow: hidden;
}

.reasoning-box summary {
  min-height: 36px;
  padding: 9px 12px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 900;
  line-height: 1.3;
  user-select: none;
}

.reasoning-body {
  max-height: 220px;
  padding: 0 12px 12px;
  overflow-y: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: 13px;
  line-height: 1.7;
}

.chat-content p {
  margin: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  line-height: 1.76;
}

.chat-content p + p,
.chat-content ul,
.chat-content ol,
.chat-content blockquote,
.chat-content .code-block {
  margin-top: 12px;
}

.chat-content h1,
.chat-content h2,
.chat-content h3,
.chat-content h4,
.chat-content h5,
.chat-content h6 {
  margin: 0 0 10px;
  line-height: 1.35;
}

.chat-content ul,
.chat-content ol {
  padding-left: 22px;
}

.chat-content li {
  margin: 6px 0;
  line-height: 1.68;
}

.chat-content blockquote {
  padding: 10px 12px;
  border-left: 3px solid rgba(8, 145, 178, 0.7);
  border-radius: 10px;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.36);
}

.chat-content a {
  color: #0f5f73;
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.chat-content .chat-inline-source {
  display: inline-grid;
  width: 19px;
  height: 19px;
  margin: 0 2px;
  place-items: center;
  border: 1px solid rgba(0, 113, 227, 0.14);
  border-radius: 50%;
  color: #0071e3;
  background: rgba(0, 113, 227, 0.07);
  text-decoration: none;
  vertical-align: -3px;
  transition: transform 160ms ease, background 160ms ease;
}

.chat-content .chat-inline-source:hover {
  transform: translateY(-1px);
  background: rgba(0, 113, 227, 0.13);
}

.chat-content .chat-inline-source span,
.chat-content .chat-inline-source svg {
  display: block;
  width: 12px;
  height: 12px;
}

.chat-content code {
  padding: 2px 6px;
  border-radius: 7px;
  color: #0f172a;
  background: rgba(15, 23, 42, 0.08);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.92em;
}

.code-block {
  overflow: hidden;
  border: 1px solid rgba(15, 23, 42, 0.12);
  border-radius: var(--radius-lg);
  background: #0d1724;
}

.code-toolbar {
  min-height: 38px;
  padding: 8px 10px 8px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: #dbeafe;
  background: rgba(255, 255, 255, 0.06);
  font-size: 12px;
  font-weight: 800;
}

.code-copy {
  min-width: 54px;
  min-height: 28px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 9px;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.10);
  cursor: pointer;
  font-size: 12px;
  font-weight: 900;
}

.code-copy:hover {
  background: rgba(255, 255, 255, 0.18);
}

.code-block pre {
  margin: 0;
  padding: 14px;
  overflow-x: auto;
}

.code-block pre code {
  display: block;
  padding: 0;
  color: #e5eefb;
  background: transparent;
  line-height: 1.65;
  white-space: pre;
}

.chat-message.is-loading .chat-content p::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-left: 6px;
  border-radius: 999px;
  background: currentColor;
  animation: chatPulse 1s infinite ease-in-out;
}

.chat-form {
  position: relative;
  z-index: 4;
  padding: 16px;
  border-top: 1px solid rgba(71, 85, 105, 0.18);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: end;
  overflow: visible;
}

.chat-tools-toggle {
  width: 48px;
  height: 48px;
  border: 1px solid var(--control-border);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  color: #0f172a;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.78), rgba(235, 248, 245, 0.56)),
    var(--control-bg);
  box-shadow: var(--control-shadow);
  cursor: pointer;
  font-size: 13px;
  font-weight: 1000;
  line-height: 1;
  transition:
    transform 0.22s ease,
    border-color 0.22s ease,
    background 0.22s ease;
}

.chat-tools-toggle:hover,
.chat-tools-toggle[aria-expanded="true"] {
  transform: translateY(-1px);
  border-color: var(--control-border-hover);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.88), rgba(228, 246, 242, 0.64)),
    var(--control-bg-hover);
}

.chat-form textarea {
  width: 100%;
  min-height: 48px;
  max-height: 160px;
  padding: 13px 16px;
  border: 1px solid var(--control-border);
  border-radius: var(--radius-xl);
  resize: none;
  color: var(--text-main);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.68), rgba(242, 250, 248, 0.58)),
    rgba(255, 255, 255, 0.70);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.70),
    inset 0 2px 8px rgba(15, 23, 42, 0.04);
  font: inherit;
  line-height: 1.5;
}

.chat-form textarea::placeholder {
  color: var(--text-muted);
}

.chat-send {
  min-width: 92px;
  border: 0;
  cursor: pointer;
}

.chat-send:disabled,
.chat-form textarea:disabled {
  cursor: wait;
  opacity: 0.72;
}

.chat-side {
  position: sticky;
  top: 110px;
  max-width: 420px;
  justify-self: stretch;
}

.chat-side h2 {
  position: relative;
  z-index: 1;
  margin: 0 0 18px;
}

.prompt-note {
  position: relative;
  z-index: 1;
  margin: -6px 0 18px;
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.6;
}

.prompt-list {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 10px;
}

.prompt-list button {
  width: 100%;
  position: relative;
  overflow: hidden;
  padding: 13px 14px;
  border: 1px solid var(--control-border);
  border-radius: var(--radius-lg);
  color: #12333b;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.70), rgba(235, 248, 245, 0.52)),
    rgba(255, 255, 255, 0.64);
  box-shadow: var(--control-shadow);
  cursor: pointer;
  font-size: 14px;
  font-weight: 800;
  line-height: 1.45;
  text-align: left;
  transition: 0.25s ease;
}

.prompt-list button:hover {
  transform: translateY(-1px);
  border-color: var(--control-border-hover);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.82), rgba(228, 246, 242, 0.64)),
    var(--control-bg-hover);
}

/* Modern AI chat refinements */
.chat-shell {
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.74), rgba(246,251,250,0.64)),
    rgba(255,255,255,0.70);
}

.chat-toolbar,
.chat-persona-strip,
.chat-form {
  background: rgba(255,255,255,0.42);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  backdrop-filter: blur(18px) saturate(150%);
}

.chat-log {
  gap: 20px;
  padding: 26px clamp(18px, 3vw, 34px);
  background:
    linear-gradient(180deg, rgba(248,250,252,0.34), rgba(255,255,255,0)),
    rgba(255,255,255,0.16);
}

.chat-message {
  width: min(100%, 860px);
  max-width: none;
}

.chat-message.assistant {
  align-self: flex-start;
}

.chat-message.user {
  width: min(100%, 760px);
  align-self: flex-end;
}

.chat-message.source-message {
  width: min(100%, 720px);
  max-width: none;
}

.chat-avatar {
  flex: 0 0 34px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
}

.chat-bubble {
  min-width: 0;
  max-width: 100%;
  padding: 15px 17px;
  border-radius: 18px;
  border-top-left-radius: 8px;
  color: #111827;
  background: rgba(255,255,255,0.86);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.78),
    0 10px 28px rgba(15,23,42,0.07);
  font-size: 15.5px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.chat-message.assistant .chat-bubble {
  width: min(100%, 780px);
}

.chat-message.user .chat-bubble {
  border-radius: 18px;
  border-top-right-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, #0f766e, #2563eb);
  box-shadow: 0 12px 28px rgba(37,99,235,0.18);
}

.chat-message.user .chat-content strong,
.chat-message.user .chat-content em,
.chat-message.user .chat-content h1,
.chat-message.user .chat-content h2,
.chat-message.user .chat-content h3 {
  color: #fff;
}

.chat-message.source-message .chat-bubble {
  width: min(100%, 680px);
  padding: 12px 14px;
  border-radius: 15px;
  background: rgba(248,250,252,0.78);
}

.chat-content {
  min-width: 0;
}

.chat-content p {
  line-height: 1.78;
}

.chat-content h1,
.chat-content h2,
.chat-content h3,
.chat-content h4,
.chat-content h5,
.chat-content h6 {
  margin: 4px 0 12px;
  color: #0f172a;
  font-weight: 850;
  letter-spacing: -0.012em;
}

.chat-content h1 { font-size: clamp(22px, 2.4vw, 28px); }
.chat-content h2 { font-size: clamp(19px, 2vw, 23px); }
.chat-content h3 { font-size: 17px; }
.chat-content h4 { font-size: 15.5px; }
.chat-content h5 { font-size: 14.5px; }
.chat-content h6 {
  color: #475569;
  font-size: 13px;
  letter-spacing: 0.025em;
  text-transform: none;
}

.chat-content ul,
.chat-content ol {
  margin: 10px 0 0;
  padding-left: 1.4em;
}

.chat-content li {
  margin: 5px 0;
}

.chat-content li > p {
  display: inline;
}

.chat-content .ur-md-list-text {
  min-width: 0;
}

.chat-content li > ul,
.chat-content li > ol {
  margin-top: 5px;
}

.chat-content .ur-md-list-continuation {
  display: block;
  margin-top: 5px;
}

.chat-content strong {
  color: #0f172a;
  font-weight: 850;
}

.chat-content em {
  color: #334155;
}

.chat-content del {
  color: #64748b;
  text-decoration-thickness: 1px;
}

.chat-task-item {
  display: grid;
  grid-template-columns: 17px minmax(0, 1fr);
  align-items: flex-start;
  gap: 8px;
  list-style: none;
}

.chat-task-item > span {
  width: 17px;
  height: 17px;
  margin-top: 0.3em;
  flex: 0 0 17px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(37, 99, 235, 0.34);
  border-radius: 6px;
  color: transparent;
  background: rgba(255, 255, 255, 0.32);
  font-size: 11px;
  line-height: 1;
}

.chat-task-item.is-checked > span {
  color: #fff;
  background: #1769e0;
}

.chat-task-item > ul,
.chat-task-item > ol {
  grid-column: 2;
  width: 100%;
}

.chat-content blockquote blockquote {
  margin-top: 8px;
  border-left-color: rgba(15, 118, 110, 0.54);
  background: rgba(15, 118, 110, 0.06);
}

.chat-content u {
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.chat-content .ur-md-image {
  display: block;
  width: min(100%, 620px);
  margin: 14px 0 0;
}

.chat-content .ur-md-image img {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: 440px;
  border: 1px solid rgba(15, 23, 42, 0.10);
  border-radius: 16px;
  object-fit: contain;
  background: rgba(248, 250, 252, 0.72);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

.chat-content .ur-md-image-caption {
  display: block;
  margin-top: 6px;
  color: #64748b;
  font-size: 12px;
  line-height: 1.5;
}

.chat-content .ur-md-math-inline,
.chat-content .ur-md-math-block {
  font-family: "STIX Two Math", "Times New Roman", "Songti SC", serif;
  font-variant-numeric: lining-nums;
}

.chat-content .ur-md-math-inline {
  display: inline-flex;
  align-items: baseline;
  margin: 0 0.08em;
  color: #164e63;
  white-space: nowrap;
}

.chat-content .ur-md-math-block {
  margin: 14px 0 0;
  padding: 15px 18px;
  overflow-x: auto;
  border: 1px solid rgba(8, 145, 178, 0.15);
  border-radius: 14px;
  color: #0f3f50;
  background: rgba(240, 253, 250, 0.62);
  font-size: 1.08em;
  line-height: 1.8;
  text-align: center;
  white-space: nowrap;
}

.chat-content .ur-md-math-inline .katex {
  font-size: 1.02em;
}

.chat-content .ur-md-math-block .katex-display {
  margin: 0;
}

.chat-content .ur-md-frac {
  display: inline-grid;
  grid-template-rows: auto auto;
  margin: 0 0.14em;
  text-align: center;
  vertical-align: -0.38em;
}

.chat-content .ur-md-frac > span:first-child {
  padding: 0 0.18em 0.06em;
  border-bottom: 1px solid currentColor;
}

.chat-content .ur-md-frac > span:last-child {
  padding: 0.06em 0.18em 0;
}

.chat-content .ur-md-sqrt > span {
  padding-top: 0.04em;
  border-top: 1px solid currentColor;
}

.chat-content .ur-md-footnote-ref {
  margin-left: 2px;
  font-size: 0.72em;
  vertical-align: super;
}

.chat-content .ur-md-footnote-ref a,
.chat-content .ur-md-footnote-backref {
  color: #1769e0;
  text-decoration: none;
}

.chat-content .ur-md-footnotes {
  margin-top: 18px;
  color: #64748b;
  font-size: 12px;
}

.chat-content .ur-md-footnotes hr {
  width: 72px;
  margin: 0 0 10px;
}

.chat-content .ur-md-footnotes ol {
  margin: 0;
  padding-left: 20px;
}

.chat-content .ur-md-footnotes li {
  scroll-margin-top: 110px;
}

:root[data-theme="dark"] .chat-content .ur-md-image img {
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(15, 23, 42, 0.62);
}

:root[data-theme="dark"] .chat-content .ur-md-math-inline {
  color: #bae6fd;
}

:root[data-theme="dark"] .chat-content .ur-md-math-block {
  border-color: rgba(56, 189, 248, 0.16);
  color: #e0f2fe;
  background: rgba(8, 47, 73, 0.42);
}

.chat-content hr {
  height: 1px;
  margin: 16px 0;
  border: 0;
  background: rgba(15,23,42,0.12);
}

.chat-content blockquote {
  margin: 12px 0 0;
  padding: 10px 13px;
  border-left: 4px solid rgba(37,99,235,0.56);
  border-radius: 12px;
  background: rgba(37,99,235,0.07);
}

.chat-content code {
  color: #0f172a;
  background: rgba(15,23,42,0.08);
  font-size: 0.9em;
}

.chat-table-wrap {
  width: 100%;
  margin-top: 12px;
  overflow-x: auto;
  border: 1px solid rgba(15,23,42,0.10);
  border-radius: 14px;
  background: rgba(255,255,255,0.72);
}

.chat-table-wrap table {
  width: 100%;
  border-collapse: collapse;
  min-width: 460px;
}

.chat-table-wrap th,
.chat-table-wrap td {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(15,23,42,0.08);
  vertical-align: top;
}

.chat-table-wrap th {
  color: #0f172a;
  background: rgba(15,118,110,0.08);
  font-weight: 850;
}

.chat-table-wrap tr:last-child td {
  border-bottom: 0;
}

.code-block {
  margin-top: 14px;
  border-radius: 16px;
  border-color: rgba(15,23,42,0.16);
  box-shadow: 0 16px 34px rgba(15,23,42,0.14);
}

.code-block pre {
  font-size: 13.5px;
  line-height: 1.72;
}

.chat-form {
  align-items: end;
  padding: 14px 16px 16px;
}

.chat-form textarea {
  min-height: 50px;
  border-radius: 18px;
  background: rgba(255,255,255,0.82);
  font-size: 15px;
  line-height: 1.55;
}

.chat-tools-toggle,
.chat-send {
  min-height: 50px;
  border-radius: 16px;
}

:root[data-theme="dark"] .chat-shell {
  background: rgba(8, 18, 28, 0.72);
}

:root[data-theme="dark"] .chat-toolbar,
:root[data-theme="dark"] .chat-persona-strip,
:root[data-theme="dark"] .chat-form {
  background: rgba(8, 18, 28, 0.52);
}

:root[data-theme="dark"] .chat-bubble {
  color: #e0f2fe;
  background: rgba(15, 23, 42, 0.78);
  border-color: rgba(255,255,255,0.10);
}

:root[data-theme="dark"] .chat-content h1,
:root[data-theme="dark"] .chat-content h2,
:root[data-theme="dark"] .chat-content h3,
:root[data-theme="dark"] .chat-content strong {
  color: #f8fafc;
}

:root[data-theme="dark"] .chat-content em {
  color: #bae6fd;
}

:root[data-theme="dark"] .chat-table-wrap {
  border-color: rgba(255,255,255,0.10);
  background: rgba(15,23,42,0.54);
}

:root[data-theme="dark"] .chat-table-wrap th {
  color: #f8fafc;
  background: rgba(56,189,248,0.14);
}

:root[data-theme="dark"] .chat-table-wrap th,
:root[data-theme="dark"] .chat-table-wrap td {
  border-bottom-color: rgba(255,255,255,0.08);
}

/* Conversation density + readability pass */
.chat-layout {
  grid-template-columns: minmax(0, 1.18fr) minmax(240px, 0.28fr);
  gap: 18px;
}

.chat-shell {
  height: clamp(660px, calc(100svh - 126px), 880px);
}

.chat-toolbar {
  padding: 14px 18px;
}

.chat-persona-strip {
  padding: 8px 14px;
}

.chat-log {
  gap: 12px;
  padding: 18px clamp(16px, 2.4vw, 28px);
}

.chat-message {
  width: min(100%, 920px);
  gap: 10px;
}

.chat-message.user {
  width: min(100%, 820px);
}

.chat-avatar {
  flex: 0 0 30px;
  width: 30px;
  height: 30px;
  font-size: 12px;
}

.chat-bubble {
  padding: 12px 15px;
  font-size: 15px;
  line-height: 1.68;
}

.chat-message.assistant .chat-bubble {
  width: min(100%, 840px);
}

.chat-message.user .chat-bubble {
  min-width: 58px;
  padding: 11px 15px;
  color: #ffffff;
  background:
    linear-gradient(135deg, rgba(15, 118, 110, 0.98), rgba(29, 78, 216, 0.98));
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: 0 12px 28px rgba(29,78,216,0.22);
}

.chat-message.user .chat-content,
.chat-message.user .chat-content p,
.chat-message.user .chat-content li,
.chat-message.user .chat-content code {
  color: #ffffff;
}

.chat-message.user .chat-content p {
  font-weight: 780;
  line-height: 1.55;
}

.chat-message.user .chat-avatar {
  color: #ffffff;
  background: linear-gradient(135deg, #ef4444, #f97316);
  box-shadow: 0 8px 18px rgba(249, 115, 22, 0.22);
}

.chat-content p {
  line-height: 1.68;
}

.chat-content p + p,
.chat-content ul,
.chat-content ol,
.chat-content blockquote,
.chat-content .code-block,
.chat-content .chat-table-wrap {
  margin-top: 9px;
}

.chat-form {
  padding: 12px 14px;
  gap: 10px;
}

.chat-form textarea {
  min-height: 46px;
  padding: 11px 14px;
}

.chat-tools-toggle,
.chat-send {
  min-height: 46px;
}

@keyframes chatPulse {
  0%,
  100% {
    opacity: 0.25;
    transform: translateY(0);
  }

  50% {
    opacity: 1;
    transform: translateY(-2px);
  }
}

@media (max-width: 920px) {
  .chat-hero,
  .chat-layout {
    grid-template-columns: 1fr;
  }

  .chat-shell {
    height: min(760px, calc(100svh - 108px));
  }

  .chat-hero h1 {
    font-size: 56px;
  }

  .chat-side {
    position: static;
    max-width: none;
  }
}

@media (max-width: 640px) {
  .chat-main {
    padding-top: 34px;
  }

  .chat-hero {
    padding: 28px 20px;
  }

  .chat-hero h1 {
    font-size: 42px;
  }

  .chat-hero p {
    font-size: 16px;
  }

  .chat-shell {
    height: min(760px, calc(100svh - 92px));
    min-height: 560px;
  }

  .chat-log {
    padding: 16px 12px;
  }

  .chat-message {
    max-width: 100%;
    width: 100%;
    gap: 9px;
  }

  .chat-message.user {
    width: 100%;
  }

  .chat-message.assistant .chat-bubble,
  .chat-message.user .chat-bubble {
    width: auto;
    max-width: calc(100vw - 68px);
    font-size: 15px;
  }

  .chat-form {
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 10px;
    padding: 14px;
  }

  .chat-options {
    left: 14px;
    right: 14px;
    bottom: calc(100% + 10px);
  }

  .chat-tools-toggle {
    width: 46px;
    height: 46px;
  }

  .chat-send {
    width: auto;
    min-width: 76px;
  }
}

/* ============================================================
   Assistant composer redesign — 2026-06-04
   ChatGPT-style input + capability chips, matched to site glass.
   ============================================================ */
.chat-composer {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 12px 12px 10px;
  border: 1px solid var(--glass-border);
  border-radius: 22px;
  background: var(--surface-strong);
  box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.55);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  backdrop-filter: blur(20px) saturate(150%);
}
:root[data-theme="dark"] .chat-composer {
  background: rgba(16, 23, 32, 0.72);
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.chat-composer textarea {
  width: 100%;
  border: 0;
  outline: 0;
  resize: none;
  background: transparent;
  color: var(--text-main);
  font: inherit;
  font-size: 16px;
  line-height: 1.55;
  max-height: 200px;
  min-height: 28px;
  padding: 6px 8px 2px;
}
.chat-composer textarea::placeholder {
  color: var(--text-muted);
}

.chat-composer-bar {
  display: flex;
  align-items: center;
  gap: 10px;
}

.chat-caps {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  flex: 1 1 auto;
  min-width: 0;
}

.chat-cap {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 36px;
  padding: 0 14px 0 12px;
  border: 1px solid var(--control-border);
  border-radius: 999px;
  background: var(--control-bg);
  color: var(--text-muted);
  font-size: 13.5px;
  font-weight: 750;
  cursor: pointer;
  user-select: none;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.chat-cap input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  pointer-events: none;
}
.chat-cap-icon {
  display: inline-flex;
}
.chat-cap-icon svg {
  width: 17px;
  height: 17px;
}
.chat-cap:hover {
  border-color: var(--control-border-hover);
  color: var(--text-main);
}
.chat-cap:has(input:checked) {
  background: color-mix(in srgb, var(--primary) 16%, transparent);
  border-color: color-mix(in srgb, var(--primary) 52%, transparent);
  color: var(--primary);
}
.chat-cap:focus-within {
  outline: 2px solid color-mix(in srgb, var(--primary) 55%, transparent);
  outline-offset: 2px;
}
/* Deep-thinking chip gets a gentle pulse while active */
.chat-cap[data-cap="think"]:has(input:checked) .chat-cap-icon {
  animation: chatCapPulse 1.8s ease-in-out infinite;
}
@keyframes chatCapPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.88); }
}
@media (prefers-reduced-motion: reduce) {
  .chat-cap[data-cap="think"]:has(input:checked) .chat-cap-icon { animation: none; }
}

.chat-send {
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  display: inline-grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  box-shadow: 0 8px 20px color-mix(in srgb, var(--primary) 30%, transparent);
  transition: transform 0.15s ease, background 0.18s ease, opacity 0.18s ease;
}
.chat-send:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}
.chat-send:active {
  transform: translateY(0) scale(0.96);
}
.chat-send:disabled {
  opacity: 0.4;
  cursor: default;
  transform: none;
  box-shadow: none;
}
.chat-send-icon {
  display: inline-flex;
}
.chat-send-icon svg {
  width: 20px;
  height: 20px;
}

/* Phones: hide chip labels, keep icons → compact bar */
@media (max-width: 560px) {
  .chat-cap {
    padding: 0 11px;
    gap: 0;
  }
  .chat-cap-label {
    display: none;
  }
}

/* ---- Thinking / sources polish ---- */
.reasoning-box {
  border-radius: 14px;
  border: 1px solid color-mix(in srgb, var(--primary) 22%, var(--glass-border));
  background: color-mix(in srgb, var(--primary) 6%, transparent);
}
.reasoning-box summary {
  font-weight: 800;
}
.reasoning-box summary::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--primary);
  vertical-align: middle;
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--primary) 60%, transparent);
  animation: chatThinkDot 1.6s ease-out infinite;
}
@keyframes chatThinkDot {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--primary) 55%, transparent); }
  70% { box-shadow: 0 0 0 7px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

/* ============================================================
   Chat dark-mode background fix + cleaner send button — 2026-06-04b
   ============================================================ */

/* The message log had a hard-coded light panel → washed out in dark.
   Make it transparent/subtle so it inherits the dark shell. */
:root[data-theme="dark"] .chat-log {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0));
}
:root[data-theme="dark"] .chat-hero,
:root[data-theme="dark"] .chat-side {
  background: rgba(10, 18, 27, 0.6);
  border-color: rgba(255, 255, 255, 0.08);
}

/* Send button: neutral monochrome (the bright teal circle looked odd).
   Light: near-black circle + white arrow. Dark: white circle + dark arrow. */
.chat-send {
  width: 40px;
  height: 40px;
  background: #14304f;
  color: #fff;
  box-shadow: none;
}
.chat-send:hover {
  background: #0c1f36;
  transform: translateY(-1px);
}
.chat-send:active {
  transform: translateY(0) scale(0.95);
}
.chat-send-icon svg {
  width: 19px;
  height: 19px;
}
:root[data-theme="dark"] .chat-send {
  background: #eef4fb;
  color: #0c1620;
}
:root[data-theme="dark"] .chat-send:hover {
  background: #ffffff;
}
/* Dim the send button while the input is empty (ChatGPT-style affordance) */
.chat-composer:has(textarea:placeholder-shown) .chat-send {
  opacity: 0.4;
}

/* Force the send button to a true circle (base rule set min-width:92px). */
.chat-send {
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  padding: 0;
  border-radius: 50%;
  flex: 0 0 auto;
}

/* ============================================================
   AI creative canvas — 2026-07-26
   One continuous workspace: no hero card, shell card or fixed side panel.
   ============================================================ */

main.page-main[data-page-key="chat"].chat-main {
  width: min(calc(100% - 36px), 1500px);
  max-width: 1500px;
  padding-top: clamp(22px, 3vw, 42px);
}

main.page-main[data-page-key="chat"] .chat-workspace {
  position: relative;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  width: 100%;
  height: max(680px, calc(100dvh - 138px));
  min-height: 680px;
  color: var(--ui-ink, #1d1d1f);
}

main.page-main[data-page-key="chat"] .chat-toolbar-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

main.page-main[data-page-key="chat"] .chat-toolbar-main .chat-new-button {
  margin-left: auto;
}

main.page-main[data-page-key="chat"] .chat-toolbar {
  z-index: 20;
  width: min(100%, 1040px);
  margin: 0 auto;
  padding: 8px 4px 16px;
  border: 0;
  border-bottom: 1px solid var(--ui-line, rgba(29, 29, 31, 0.1));
  background: transparent;
  box-shadow: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

main.page-main[data-page-key="chat"] .chat-toolbar-main {
  position: relative;
}

main.page-main[data-page-key="chat"] .chat-persona-menu {
  position: relative;
}

main.page-main[data-page-key="chat"] .chat-persona-menu > summary {
  list-style: none;
}

main.page-main[data-page-key="chat"] .chat-persona-menu > summary::-webkit-details-marker {
  display: none;
}

main.page-main[data-page-key="chat"] .chat-persona-current {
  width: fit-content;
  padding: 5px 8px 5px 5px;
  border-radius: 16px;
  cursor: pointer;
  transition: background 180ms ease;
}

main.page-main[data-page-key="chat"] .chat-persona-current:hover,
main.page-main[data-page-key="chat"] .chat-persona-menu[open] .chat-persona-current {
  background: rgba(0, 0, 0, 0.045);
}

main.page-main[data-page-key="chat"] .chat-persona-avatar {
  flex: 0 0 38px;
  width: 38px;
  height: 38px;
  border: 1px solid var(--ui-line, rgba(29, 29, 31, 0.1));
  border-radius: 12px;
  background: #fff;
}

main.page-main[data-page-key="chat"] .chat-persona-copy {
  display: grid;
  gap: 2px;
}

main.page-main[data-page-key="chat"] .chat-persona-current #chatPersonaName {
  color: var(--ui-ink, #1d1d1f);
  font-size: 14px;
  font-weight: 700;
}

main.page-main[data-page-key="chat"] .chat-persona-current #chatStatus {
  margin: 0;
  color: var(--ui-muted, #6e6e73);
  font-size: 11px;
  font-weight: 560;
  letter-spacing: 0;
}

main.page-main[data-page-key="chat"] .chat-persona-chevron {
  width: 7px;
  height: 7px;
  margin: 0 3px 4px 5px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  color: var(--ui-muted, #6e6e73);
  transform: rotate(45deg);
  transition: transform 180ms ease;
}

main.page-main[data-page-key="chat"] .chat-persona-menu[open] .chat-persona-chevron {
  margin-bottom: -1px;
  transform: rotate(225deg);
}

main.page-main[data-page-key="chat"] .chat-persona-popover {
  position: absolute;
  z-index: 30;
  top: calc(100% + 10px);
  left: 0;
  width: min(330px, calc(100vw - 36px));
  padding: 12px;
  border: 1px solid var(--ui-line, rgba(29, 29, 31, 0.1));
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.14);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  backdrop-filter: blur(24px) saturate(160%);
}

main.page-main[data-page-key="chat"] .chat-persona-popover > p {
  margin: 2px 6px 10px;
  color: var(--ui-muted, #6e6e73);
  font-size: 11px;
  font-weight: 650;
}

main.page-main[data-page-key="chat"] .chat-persona-strip {
  display: grid;
  gap: 4px;
  max-height: min(360px, 55vh);
  padding: 0;
  border: 0;
  overflow-x: hidden;
  overflow-y: auto;
  background: transparent;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

main.page-main[data-page-key="chat"] .chat-persona-chip {
  width: 100%;
  max-width: none;
  min-height: 48px;
  grid-template-columns: 34px minmax(0, 1fr);
  justify-content: start;
  padding: 7px 10px 7px 7px;
  border: 0;
  border-radius: 14px;
  background: transparent;
  box-shadow: none;
  color: var(--ui-ink, #1d1d1f);
  text-align: left;
}

main.page-main[data-page-key="chat"] .chat-persona-chip:hover {
  background: rgba(0, 0, 0, 0.05);
}

main.page-main[data-page-key="chat"] .chat-persona-chip.is-active {
  background: rgba(0, 113, 227, 0.1);
  color: var(--ui-blue, #0071e3);
}

main.page-main[data-page-key="chat"] .chat-icon-btn.chat-new-button {
  display: inline-flex;
  width: auto;
  min-width: 0;
  height: 40px;
  gap: 7px;
  align-items: center;
  padding: 0 15px;
  border: 0;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.055);
  color: var(--ui-ink, #1d1d1f);
  font-size: 13px;
  font-weight: 650;
}

main.page-main[data-page-key="chat"] .chat-new-button [data-icon] {
  display: inline-flex;
}

main.page-main[data-page-key="chat"] .chat-new-button [data-icon] svg {
  width: 16px;
  height: 16px;
}

main.page-main[data-page-key="chat"] .chat-icon-btn.chat-new-button:hover {
  background: rgba(0, 0, 0, 0.09);
  transform: none;
}

main.page-main[data-page-key="chat"] .chat-canvas {
  position: relative;
  display: grid;
  min-height: 0;
  overflow: hidden;
}

main.page-main[data-page-key="chat"] .chat-empty-state {
  grid-area: 1 / 1;
  align-self: center;
  justify-self: center;
  width: min(100%, 900px);
  padding: clamp(42px, 8vh, 90px) 10px;
  text-align: center;
}

main.page-main[data-page-key="chat"] .chat-empty-state[hidden] {
  display: none;
}

main.page-main[data-page-key="chat"] .chat-empty-kicker {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--ui-blue, #0071e3);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

main.page-main[data-page-key="chat"] .chat-empty-state h1 {
  max-width: 820px;
  margin: 0 auto;
  color: var(--ui-ink, #1d1d1f);
  font-size: clamp(42px, 6vw, 72px);
  font-weight: 720;
  letter-spacing: -0.06em;
  line-height: 1.04;
}

main.page-main[data-page-key="chat"] .chat-empty-copy > p {
  margin-top: 14px;
}

main.page-main[data-page-key="chat"] .chat-empty-copy > p {
  max-width: 600px;
  margin: 20px auto 0;
  color: var(--ui-muted, #6e6e73);
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.65;
}

main.page-main[data-page-key="chat"] .chat-starter-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  width: min(100%, 760px);
  margin: clamp(30px, 5vh, 48px) auto 0;
}

main.page-main[data-page-key="chat"] .prompt-list button {
  min-height: 54px;
  padding: 14px 16px;
  border: 1px solid var(--ui-line, rgba(29, 29, 31, 0.1));
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.64);
  box-shadow: none;
  color: var(--ui-ink, #1d1d1f);
  font-size: 13px;
  font-weight: 560;
  line-height: 1.45;
  text-align: left;
}

main.page-main[data-page-key="chat"] .prompt-list button:hover {
  border-color: rgba(0, 113, 227, 0.25);
  background: rgba(255, 255, 255, 0.92);
  transform: translateY(-1px);
}

main.page-main[data-page-key="chat"] .chat-log {
  grid-area: 1 / 1;
  width: min(100%, 960px);
  margin: 0 auto;
  gap: 24px;
  padding: clamp(28px, 5vh, 54px) 8px 36px;
  overflow-x: hidden;
  overflow-y: auto;
  background: transparent;
  scrollbar-gutter: auto;
}

main.page-main[data-page-key="chat"] .chat-log:empty {
  pointer-events: none;
}

main.page-main[data-page-key="chat"] .chat-message {
  width: 100%;
  max-width: none;
  gap: 13px;
}

main.page-main[data-page-key="chat"] .chat-message.assistant {
  align-self: stretch;
}

main.page-main[data-page-key="chat"] .chat-message.user {
  width: min(82%, 760px);
  align-self: flex-end;
}

main.page-main[data-page-key="chat"] .chat-message .chat-avatar {
  flex: 0 0 30px;
  width: 30px;
  height: 30px;
  border-radius: 10px;
  font-size: 11px;
}

main.page-main[data-page-key="chat"] .chat-message.assistant .chat-bubble {
  width: min(100%, 860px);
  padding: 2px 0 10px;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  color: var(--ui-ink, #1d1d1f);
}

main.page-main[data-page-key="chat"] .chat-message.user .chat-avatar {
  display: none;
}

main.page-main[data-page-key="chat"] .chat-message.user .chat-bubble {
  width: auto;
  max-width: 100%;
  margin-left: auto;
  padding: 12px 17px;
  border: 0;
  border-radius: 20px 20px 6px 20px;
  background: var(--ui-blue, #0071e3);
  box-shadow: none;
  color: #fff;
}

main.page-main[data-page-key="chat"] .chat-bubble {
  font-size: 15.5px;
  line-height: 1.72;
}

main.page-main[data-page-key="chat"] .chat-content p {
  line-height: 1.72;
}

main.page-main[data-page-key="chat"] .chat-message.source-message {
  width: min(100%, 860px);
  margin-top: -10px;
  padding-left: 43px;
}

main.page-main[data-page-key="chat"] .chat-message.source-message .chat-avatar {
  display: none;
}

main.page-main[data-page-key="chat"] .chat-message.source-message .chat-bubble {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--ui-line, rgba(29, 29, 31, 0.1));
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.5);
  box-shadow: none;
  color: var(--ui-muted, #6e6e73);
}

main.page-main[data-page-key="chat"] .reasoning-box {
  margin: 0 0 14px;
  border: 0;
  border-radius: 0;
  color: var(--ui-muted, #6e6e73);
  background: transparent;
  overflow: visible;
}

main.page-main[data-page-key="chat"] .reasoning-box > summary {
  min-height: 34px;
  padding: 0;
  display: grid;
  grid-template-columns: 20px auto minmax(0, 1fr) 8px;
  gap: 8px;
  align-items: center;
  list-style: none;
  color: inherit;
  font-size: 13px;
  font-weight: 560;
}

main.page-main[data-page-key="chat"] .reasoning-box > summary::-webkit-details-marker {
  display: none;
}

main.page-main[data-page-key="chat"] .reasoning-box > summary::before {
  display: none;
  content: none;
  animation: none;
}

main.page-main[data-page-key="chat"] .reasoning-box > summary::after {
  content: "";
  width: 7px;
  height: 7px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  transition: transform 220ms ease;
}

main.page-main[data-page-key="chat"] .reasoning-box[open] > summary::after {
  transform: rotate(225deg) translate(-1px, -1px);
}

main.page-main[data-page-key="chat"] .reasoning-summary-icon {
  display: grid;
  width: 20px;
  height: 20px;
  place-items: center;
  color: #6e4fea;
}

main.page-main[data-page-key="chat"] .reasoning-summary-icon svg {
  width: 17px;
  height: 17px;
}

main.page-main[data-page-key="chat"] .reasoning-summary-label {
  color: var(--ui-ink, #1d1d1f);
  font-weight: 620;
}

main.page-main[data-page-key="chat"] .reasoning-summary-meta {
  color: inherit;
  font-size: 11.5px;
  font-weight: 450;
}

main.page-main[data-page-key="chat"] .reasoning-body {
  max-height: none;
  padding: 5px 0 8px 28px;
  display: grid;
  gap: 8px;
  overflow: visible;
  white-space: normal;
}

main.page-main[data-page-key="chat"] .reasoning-step {
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr);
  gap: 8px;
  align-items: start;
}

main.page-main[data-page-key="chat"] .reasoning-step > span {
  position: relative;
  width: 8px;
  height: 8px;
  margin-top: 5px;
  border: 1.5px solid rgba(110, 79, 234, 0.28);
  border-radius: 50%;
}

main.page-main[data-page-key="chat"] .reasoning-step:not(:last-child) > span::after {
  content: "";
  position: absolute;
  top: 9px;
  left: 2.5px;
  width: 1px;
  height: 28px;
  background: rgba(110, 79, 234, 0.14);
}

main.page-main[data-page-key="chat"] .reasoning-step.is-complete > span {
  border-color: #6e4fea;
  background: #6e4fea;
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.94);
}

main.page-main[data-page-key="chat"] .reasoning-step.is-active > span {
  border-color: #6e4fea;
  border-top-color: transparent;
  animation: chatCapabilitySpin 800ms linear infinite;
}

main.page-main[data-page-key="chat"] .reasoning-step.is-warning > span {
  border-color: #e29321;
  background: #e29321;
}

main.page-main[data-page-key="chat"] .reasoning-step > div {
  display: grid;
  gap: 1px;
}

main.page-main[data-page-key="chat"] .reasoning-step b {
  color: var(--ui-ink, #1d1d1f);
  font-size: 12.5px;
  font-weight: 620;
  line-height: 1.4;
}

main.page-main[data-page-key="chat"] .reasoning-step small {
  color: inherit;
  font-size: 11.5px;
  line-height: 1.45;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .reasoning-summary-label,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .reasoning-step b {
  color: #f5f5f7;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .reasoning-summary-icon {
  color: #b49cff;
}

@media (max-width: 720px) {
  main.page-main[data-page-key="chat"] .reasoning-summary-meta {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  main.page-main[data-page-key="chat"] .reasoning-body {
    padding-left: 20px;
  }
}

main.page-main[data-page-key="chat"] .chat-composer {
  position: relative;
  z-index: 18;
  display: flex;
  width: min(100%, 960px);
  margin: 0 auto calc(12px + env(safe-area-inset-bottom, 0px));
  padding: 12px 12px 10px;
  border: 1px solid rgba(29, 29, 31, 0.12);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.09);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  backdrop-filter: blur(24px) saturate(160%);
}

main.page-main[data-page-key="chat"] .chat-composer textarea {
  min-height: 34px;
  max-height: 180px;
  padding: 7px 10px 4px;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  color: var(--ui-ink, #1d1d1f);
  font-size: 16px;
}

main.page-main[data-page-key="chat"] .chat-composer textarea:disabled {
  opacity: 0.65;
}

main.page-main[data-page-key="chat"] .chat-composer-bar {
  display: flex;
  gap: 8px;
  align-items: center;
  border: 0;
  border-radius: 0;
  background: transparent;
}

main.page-main[data-page-key="chat"] .chat-caps {
  display: flex;
  gap: 8px;
  align-items: center;
  flex: 1 1 auto;
}

main.page-main[data-page-key="chat"] .chat-cap {
  height: 34px;
  padding: 0 12px 0 10px;
  border: 0;
  background: rgba(0, 0, 0, 0.05);
  color: var(--ui-muted, #6e6e73);
  font-size: 12px;
  font-weight: 600;
}

main.page-main[data-page-key="chat"] .chat-cap:hover {
  background: rgba(0, 0, 0, 0.075);
}

main.page-main[data-page-key="chat"] .chat-cap:has(input:checked) {
  border: 0;
  background: rgba(0, 113, 227, 0.11);
  color: var(--ui-blue, #0071e3);
}

main.page-main[data-page-key="chat"] .chat-source-selector {
  display: inline-flex;
  height: 34px;
  align-items: center;
  padding: 3px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.05);
}

main.page-main[data-page-key="chat"] .chat-source-label {
  padding: 0 8px;
  color: var(--ui-muted, #6e6e73);
  font-size: 11px;
  font-weight: 560;
}

main.page-main[data-page-key="chat"] .chat-source-option {
  position: relative;
  display: inline-grid;
  height: 28px;
  place-items: center;
  padding: 0 10px;
  border-radius: 999px;
  color: var(--ui-muted, #6e6e73);
  cursor: pointer;
  font-size: 11px;
  font-weight: 620;
}

main.page-main[data-page-key="chat"] .chat-source-option input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

main.page-main[data-page-key="chat"] .chat-source-option:has(input:checked) {
  background: #fff;
  box-shadow: 0 1px 5px rgba(0, 0, 0, 0.1);
  color: var(--ui-ink, #1d1d1f);
}

main.page-main[data-page-key="chat"] .chat-source-option:focus-within {
  outline: 2px solid rgba(0, 113, 227, 0.45);
  outline-offset: 1px;
}

main.page-main[data-page-key="chat"] .chat-prompt-menu {
  position: relative;
  flex: 0 0 auto;
}

main.page-main[data-page-key="chat"] .chat-prompt-menu > summary {
  display: inline-flex;
  height: 36px;
  gap: 6px;
  align-items: center;
  padding: 0 11px;
  border-radius: 999px;
  color: var(--ui-muted, #6e6e73);
  cursor: pointer;
  font-size: 12px;
  font-weight: 620;
  list-style: none;
}

main.page-main[data-page-key="chat"] .chat-prompt-menu > summary::-webkit-details-marker {
  display: none;
}

main.page-main[data-page-key="chat"] .chat-prompt-menu > summary:hover,
main.page-main[data-page-key="chat"] .chat-prompt-menu[open] > summary {
  background: rgba(0, 0, 0, 0.055);
  color: var(--ui-ink, #1d1d1f);
}

main.page-main[data-page-key="chat"] .chat-prompt-menu > summary [data-icon] {
  display: inline-flex;
}

main.page-main[data-page-key="chat"] .chat-prompt-menu > summary svg {
  width: 16px;
  height: 16px;
}

main.page-main[data-page-key="chat"] .chat-prompt-popover {
  position: absolute;
  right: 0;
  bottom: calc(100% + 12px);
  width: min(380px, calc(100vw - 36px));
  padding: 15px;
  border: 1px solid var(--ui-line, rgba(29, 29, 31, 0.1));
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.16);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  backdrop-filter: blur(24px) saturate(160%);
}

main.page-main[data-page-key="chat"] .chat-prompt-popover > strong {
  display: block;
  margin: 2px 2px 12px;
  color: var(--ui-ink, #1d1d1f);
  font-size: 13px;
}

main.page-main[data-page-key="chat"] .chat-prompt-list {
  gap: 5px;
}

main.page-main[data-page-key="chat"] .chat-prompt-list button {
  min-height: 0;
  padding: 11px 12px;
  border: 0;
  background: transparent;
}

main.page-main[data-page-key="chat"] .chat-prompt-list button:hover {
  border: 0;
  background: rgba(0, 0, 0, 0.05);
  transform: none;
}

main.page-main[data-page-key="chat"] .chat-send {
  width: 40px;
  height: 40px;
  min-width: 40px;
  min-height: 40px;
  background: var(--ui-ink, #1d1d1f);
  color: #fff;
}

main.page-main[data-page-key="chat"] .chat-form.is-busy .chat-send {
  background: var(--ui-blue, #0071e3);
  opacity: 1;
}

body:has(.music-bottom-player.is-visible) main.page-main[data-page-key="chat"] .chat-workspace {
  padding-bottom: 98px;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-persona-current:hover,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-persona-menu[open] .chat-persona-current,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-icon-btn.chat-new-button,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-cap,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-source-selector,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-prompt-menu > summary:hover,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-prompt-menu[open] > summary {
  background: rgba(255, 255, 255, 0.08);
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-persona-avatar {
  border-color: rgba(255, 255, 255, 0.1);
  background: #1c1c1e;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-persona-popover,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-prompt-popover {
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(28, 28, 30, 0.94);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.48);
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-persona-chip:hover,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-prompt-list button:hover {
  background: rgba(255, 255, 255, 0.08);
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-persona-chip.is-active,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-cap:has(input:checked) {
  background: rgba(41, 151, 255, 0.16);
  color: #2997ff;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .prompt-list button {
  border-color: rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.055);
  color: #f5f5f7;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .prompt-list button:hover {
  border-color: rgba(41, 151, 255, 0.32);
  background: rgba(255, 255, 255, 0.09);
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-message.assistant .chat-bubble {
  background: transparent;
  color: #f5f5f7;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-message.user .chat-bubble {
  background: #0a84ff;
  color: #fff;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-message.source-message .chat-bubble {
  border-color: rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.055);
  color: #a1a1a6;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-composer {
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(28, 28, 30, 0.86);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.45);
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-source-option:has(input:checked) {
  background: rgba(255, 255, 255, 0.13);
  box-shadow: none;
  color: #fff;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-send {
  background: #f5f5f7;
  color: #111;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-form.is-busy .chat-send {
  background: #0a84ff;
  color: #fff;
}

@media (max-width: 720px) {
  main.page-main[data-page-key="chat"].chat-main {
    width: calc(100% - 20px);
    padding-top: 16px;
  }

  main.page-main[data-page-key="chat"] .chat-workspace {
    height: max(610px, calc(100dvh - 112px));
    min-height: 610px;
  }

  main.page-main[data-page-key="chat"] .chat-toolbar {
    padding: 6px 2px 12px;
  }

  main.page-main[data-page-key="chat"] .chat-persona-current {
    padding-left: 2px;
  }

  main.page-main[data-page-key="chat"] .chat-persona-avatar {
    flex-basis: 34px;
    width: 34px;
    height: 34px;
  }

  main.page-main[data-page-key="chat"] .chat-icon-btn.chat-new-button {
    height: 36px;
    padding: 0 11px;
  }

  main.page-main[data-page-key="chat"] .chat-new-button > span:last-child {
    display: none;
  }

  main.page-main[data-page-key="chat"] .chat-empty-state {
    padding: 34px 0;
  }

  main.page-main[data-page-key="chat"] .chat-empty-kicker {
    margin-bottom: 14px;
  }

  main.page-main[data-page-key="chat"] .chat-empty-state h1 {
    max-width: 11ch;
    font-size: clamp(38px, 11vw, 52px);
  }

  main.page-main[data-page-key="chat"] .chat-empty-copy > p {
    max-width: 28ch;
    margin-top: 16px;
    font-size: 14px;
  }

  main.page-main[data-page-key="chat"] .chat-starter-grid {
    grid-template-columns: 1fr;
    gap: 7px;
    margin-top: 28px;
  }

  main.page-main[data-page-key="chat"] .chat-starter-grid button:nth-child(n + 5) {
    display: none;
  }

  main.page-main[data-page-key="chat"] .prompt-list button {
    min-height: 48px;
    padding: 12px 13px;
  }

  main.page-main[data-page-key="chat"] .chat-log {
    gap: 20px;
    padding: 24px 0 26px;
  }

  main.page-main[data-page-key="chat"] .chat-message {
    gap: 9px;
  }

  main.page-main[data-page-key="chat"] .chat-message.assistant .chat-bubble {
    max-width: calc(100vw - 64px);
    font-size: 15px;
  }

  main.page-main[data-page-key="chat"] .chat-message.user {
    width: min(90%, 560px);
  }

  main.page-main[data-page-key="chat"] .chat-message.user .chat-bubble {
    max-width: 100%;
    font-size: 15px;
  }

  main.page-main[data-page-key="chat"] .chat-message.source-message {
    padding-left: 39px;
  }

  main.page-main[data-page-key="chat"] .chat-composer {
    margin-bottom: calc(7px + env(safe-area-inset-bottom, 0px));
    padding: 10px 10px 8px;
    border-radius: 24px;
  }

  main.page-main[data-page-key="chat"] .chat-composer-bar {
    gap: 5px;
  }

  main.page-main[data-page-key="chat"] .chat-caps {
    gap: 5px;
  }

  main.page-main[data-page-key="chat"] .chat-cap {
    width: 34px;
    padding: 0;
    justify-content: center;
  }

  main.page-main[data-page-key="chat"] .chat-cap-label,
  main.page-main[data-page-key="chat"] .chat-source-label {
    display: none;
  }

  main.page-main[data-page-key="chat"] .chat-source-option {
    padding: 0 8px;
  }

  main.page-main[data-page-key="chat"] .chat-prompt-menu > summary {
    width: 34px;
    padding: 0;
    justify-content: center;
  }

  main.page-main[data-page-key="chat"] .chat-prompt-label {
    display: none;
  }

  main.page-main[data-page-key="chat"] .chat-prompt-popover {
    right: -46px;
  }

  main.page-main[data-page-key="chat"] .chat-send {
    width: 38px;
    height: 38px;
    min-width: 38px;
    min-height: 38px;
  }

  body:has(.music-bottom-player.is-visible) main.page-main[data-page-key="chat"] .chat-workspace {
    padding-bottom: 88px;
  }
}

/* ============================================================
   Composer, persona and message refinement — 2026-07-26
   ============================================================ */

main.page-main[data-page-key="chat"] .chat-empty-state {
  padding-top: clamp(30px, 5vh, 58px);
  padding-bottom: clamp(26px, 5vh, 54px);
}

main.page-main[data-page-key="chat"] .chat-empty-state h1 {
  max-width: 760px;
  font-size: clamp(20px, 2.5vw, 32px);
  letter-spacing: -0.035em;
  line-height: 1.16;
  text-wrap: balance;
  transition:
    opacity 220ms ease,
    font-size 280ms cubic-bezier(0.22, 1, 0.36, 1);
}

main.page-main[data-page-key="chat"] .chat-empty-state h1[data-copy-size="medium"] {
  max-width: 880px;
  font-size: clamp(18px, 2.2vw, 28px);
  line-height: 1.2;
}

main.page-main[data-page-key="chat"] .chat-empty-state h1[data-copy-size="long"] {
  max-width: 920px;
  font-size: clamp(16px, 1.85vw, 23px);
  letter-spacing: -0.025em;
  line-height: 1.32;
}

main.page-main[data-page-key="chat"] .chat-starter-grid {
  width: min(100%, 760px);
  gap: 8px;
  margin-top: clamp(24px, 4vh, 36px);
}

main.page-main[data-page-key="chat"] .chat-starter-grid button {
  min-height: 48px;
  padding: 11px 14px;
  border-color: transparent;
  border-radius: 14px;
  background: rgba(0, 0, 0, 0.038);
  font-size: 12.5px;
  font-weight: 560;
}

main.page-main[data-page-key="chat"] .chat-starter-grid button:hover {
  border-color: rgba(0, 113, 227, 0.16);
  background: rgba(255, 255, 255, 0.88);
}

main.page-main[data-page-key="chat"] .chat-persona-chip {
  min-height: 58px;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 11px;
  padding: 8px;
  border-radius: 16px;
}

main.page-main[data-page-key="chat"] .chat-persona-chip img,
main.page-main[data-page-key="chat"] .chat-persona-chip-avatar {
  display: block;
  width: 42px;
  height: 42px;
  border: 1px solid var(--ui-line, rgba(29, 29, 31, 0.1));
  border-radius: 13px;
  background: #fff;
  object-fit: cover;
}

main.page-main[data-page-key="chat"] .chat-persona-chip img.is-brand-mark {
  box-sizing: border-box;
  padding: 7px;
  object-fit: contain;
}

main.page-main[data-page-key="chat"] .chat-persona-chip > span:last-child {
  overflow: hidden;
  font-size: 14px;
  font-weight: 650;
  text-overflow: ellipsis;
  white-space: nowrap;
}

main.page-main[data-page-key="chat"] .chat-avatar.is-brand-mark {
  box-sizing: border-box;
  padding: 5px;
}

main.page-main[data-page-key="chat"] .chat-avatar.is-brand-mark img {
  object-fit: contain;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-persona-avatar.is-brand-mark img,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-persona-chip img.is-brand-mark,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-persona-chip-image.is-brand-mark,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-avatar.is-brand-mark img,
:root:not([data-theme="light"]) main.page-main[data-page-key="chat"] .chat-persona-avatar.is-brand-mark img,
:root:not([data-theme="light"]) main.page-main[data-page-key="chat"] .chat-persona-chip img.is-brand-mark,
:root:not([data-theme="light"]) main.page-main[data-page-key="chat"] .chat-persona-chip-image.is-brand-mark,
:root:not([data-theme="light"]) main.page-main[data-page-key="chat"] .chat-avatar.is-brand-mark img {
  filter: brightness(0) invert(1);
}

main.page-main[data-page-key="chat"] .chat-message.user {
  width: fit-content;
  max-width: min(72%, 680px);
  margin-left: auto;
}

main.page-main[data-page-key="chat"] .chat-message.user .chat-bubble {
  display: inline-block;
  min-width: 0;
  padding: 10px 15px;
  border-radius: 18px 18px 5px 18px;
  background: #0878ed;
  color: #fff;
}

main.page-main[data-page-key="chat"] .chat-message.user .chat-content,
main.page-main[data-page-key="chat"] .chat-message.user .chat-content p,
main.page-main[data-page-key="chat"] .chat-message.user .chat-content li,
main.page-main[data-page-key="chat"] .chat-message.user .chat-content code,
main.page-main[data-page-key="chat"] .chat-message.user .chat-content strong,
main.page-main[data-page-key="chat"] .chat-message.user .chat-content em {
  margin: 0;
  color: #fff;
  font-weight: 540;
}

main.page-main[data-page-key="chat"] .chat-message.assistant .chat-bubble {
  max-width: 820px;
}

main.page-main[data-page-key="chat"] .chat-composer {
  gap: 7px;
  padding: 10px 10px 8px;
  border-color: rgba(29, 29, 31, 0.11);
  border-radius: 25px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow:
    0 16px 48px rgba(0, 0, 0, 0.085),
    inset 0 1px 0 rgba(255, 255, 255, 0.82);
  transition: border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

main.page-main[data-page-key="chat"] .chat-composer:focus-within {
  border-color: rgba(0, 113, 227, 0.34);
  box-shadow:
    0 18px 56px rgba(0, 0, 0, 0.1),
    0 0 0 3px rgba(0, 113, 227, 0.09),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

main.page-main[data-page-key="chat"] .chat-composer textarea,
main.page-main[data-page-key="chat"] .chat-composer textarea:focus {
  min-height: 32px;
  padding: 6px 9px 3px;
  border: 0;
  border-radius: 0;
  outline: 0;
  background: transparent;
  box-shadow: none;
}

main.page-main[data-page-key="chat"] .chat-composer-controls {
  display: flex;
  min-width: 0;
  gap: 6px;
  align-items: center;
  flex: 1 1 auto;
}

main.page-main[data-page-key="chat"] .chat-tools-menu,
main.page-main[data-page-key="chat"] .chat-model-menu {
  position: relative;
}

main.page-main[data-page-key="chat"] .chat-tools-menu > summary,
main.page-main[data-page-key="chat"] .chat-model-menu > summary {
  list-style: none;
}

main.page-main[data-page-key="chat"] .chat-tools-menu > summary::-webkit-details-marker,
main.page-main[data-page-key="chat"] .chat-model-menu > summary::-webkit-details-marker {
  display: none;
}

main.page-main[data-page-key="chat"] .chat-tools-menu > summary {
  position: relative;
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid rgba(29, 29, 31, 0.1);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.035);
  color: var(--ui-ink, #1d1d1f);
  cursor: pointer;
  transition: background 160ms ease, transform 160ms ease;
}

main.page-main[data-page-key="chat"] .chat-tools-menu > summary:hover,
main.page-main[data-page-key="chat"] .chat-tools-menu[open] > summary {
  background: rgba(0, 0, 0, 0.075);
}

main.page-main[data-page-key="chat"] .chat-tools-menu[open] > summary {
  transform: rotate(45deg);
}

main.page-main[data-page-key="chat"] .chat-tools-menu > summary [data-icon] {
  display: inline-flex;
}

main.page-main[data-page-key="chat"] .chat-tools-menu > summary svg {
  width: 18px;
  height: 18px;
}

main.page-main[data-page-key="chat"] .chat-tools-active-dot {
  position: absolute;
  top: 1px;
  right: 1px;
  display: none;
  width: 7px;
  height: 7px;
  border: 2px solid #fff;
  border-radius: 50%;
  background: #0071e3;
}

main.page-main[data-page-key="chat"] .chat-tools-menu.has-active-source .chat-tools-active-dot {
  display: block;
}

main.page-main[data-page-key="chat"] .chat-tools-popover {
  position: absolute;
  z-index: 40;
  bottom: calc(100% + 12px);
  left: 0;
  width: min(390px, calc(100vw - 36px));
  max-height: min(620px, calc(100dvh - 190px));
  padding: 11px;
  border: 1px solid var(--ui-line, rgba(29, 29, 31, 0.1));
  border-radius: 22px;
  overflow-y: auto;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.16);
  -webkit-backdrop-filter: blur(30px) saturate(155%);
  backdrop-filter: blur(30px) saturate(155%);
}

main.page-main[data-page-key="chat"] .chat-tools-section {
  display: grid;
  gap: 7px;
}

main.page-main[data-page-key="chat"] .chat-tools-section + .chat-tools-section {
  margin-top: 10px;
  padding-top: 11px;
  border-top: 1px solid var(--ui-line, rgba(29, 29, 31, 0.1));
}

main.page-main[data-page-key="chat"] .chat-tools-section > strong {
  display: flex;
  gap: 6px;
  align-items: center;
  padding: 2px 7px 5px;
  color: var(--ui-muted, #6e6e73);
  font-size: 11px;
  font-weight: 650;
}

main.page-main[data-page-key="chat"] .chat-tools-section > strong [data-icon] {
  display: inline-flex;
}

main.page-main[data-page-key="chat"] .chat-tools-section > strong svg {
  width: 14px;
  height: 14px;
}

main.page-main[data-page-key="chat"] .chat-source-options {
  display: grid;
  gap: 3px;
}

main.page-main[data-page-key="chat"] .chat-tool-option {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) 18px;
  gap: 10px;
  align-items: center;
  min-height: 58px;
  padding: 8px 10px;
  border-radius: 15px;
  color: var(--ui-ink, #1d1d1f);
  cursor: pointer;
  transition: background 150ms ease;
}

main.page-main[data-page-key="chat"] .chat-tool-option:hover {
  background: rgba(0, 0, 0, 0.045);
}

main.page-main[data-page-key="chat"] .chat-tool-option:has(input:checked) {
  background: rgba(0, 113, 227, 0.08);
}

main.page-main[data-page-key="chat"] .chat-tool-option input,
main.page-main[data-page-key="chat"] .chat-model-option input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

main.page-main[data-page-key="chat"] .chat-tool-icon {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 11px;
  background: rgba(0, 0, 0, 0.055);
  color: var(--ui-ink, #1d1d1f);
}

main.page-main[data-page-key="chat"] .chat-tool-icon svg {
  width: 18px;
  height: 18px;
}

main.page-main[data-page-key="chat"] .chat-tool-copy {
  display: grid;
  gap: 2px;
  min-width: 0;
}

main.page-main[data-page-key="chat"] .chat-tool-copy b {
  color: var(--ui-ink, #1d1d1f);
  font-size: 13px;
  font-weight: 650;
}

main.page-main[data-page-key="chat"] .chat-tool-copy small {
  overflow: hidden;
  color: var(--ui-muted, #6e6e73);
  font-size: 11px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

main.page-main[data-page-key="chat"] .chat-tool-check,
main.page-main[data-page-key="chat"] .chat-model-check {
  width: 7px;
  height: 12px;
  justify-self: center;
  border-right: 2px solid var(--ui-blue, #0071e3);
  border-bottom: 2px solid var(--ui-blue, #0071e3);
  opacity: 0;
  transform: rotate(45deg) translateY(-2px);
}

main.page-main[data-page-key="chat"] .chat-tool-option:has(input:checked) .chat-tool-check,
main.page-main[data-page-key="chat"] .chat-model-option:has(input:checked) .chat-model-check {
  opacity: 1;
}

main.page-main[data-page-key="chat"] .chat-prompt-list {
  gap: 2px;
}

main.page-main[data-page-key="chat"] .chat-prompt-list button {
  min-height: 0;
  padding: 9px 10px;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--ui-ink, #1d1d1f);
  font-size: 12px;
  font-weight: 520;
}

main.page-main[data-page-key="chat"] .chat-prompt-list button:hover {
  border: 0;
  background: rgba(0, 0, 0, 0.045);
  transform: none;
}

main.page-main[data-page-key="chat"] .chat-model-menu > summary {
  display: inline-flex;
  height: 36px;
  gap: 7px;
  align-items: center;
  padding: 0 12px 0 10px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.04);
  color: var(--ui-ink, #1d1d1f);
  cursor: pointer;
  font-size: 12px;
  font-weight: 630;
}

main.page-main[data-page-key="chat"] .chat-model-menu > summary:hover,
main.page-main[data-page-key="chat"] .chat-model-menu[open] > summary {
  background: rgba(0, 0, 0, 0.075);
}

main.page-main[data-page-key="chat"] .chat-model-summary-icon {
  display: inline-flex;
  color: var(--ui-blue, #0071e3);
}

main.page-main[data-page-key="chat"] .chat-model-summary-icon svg {
  width: 16px;
  height: 16px;
}

main.page-main[data-page-key="chat"] .chat-model-chevron {
  width: 6px;
  height: 6px;
  margin: -3px 1px 0 2px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  opacity: 0.55;
  transform: rotate(45deg);
}

main.page-main[data-page-key="chat"] .chat-model-menu[open] .chat-model-chevron {
  margin-top: 3px;
  transform: rotate(225deg);
}

main.page-main[data-page-key="chat"] .chat-model-popover {
  position: absolute;
  z-index: 40;
  bottom: calc(100% + 12px);
  left: 0;
  width: min(320px, calc(100vw - 36px));
  padding: 8px;
  border: 1px solid var(--ui-line, rgba(29, 29, 31, 0.1));
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 22px 64px rgba(0, 0, 0, 0.15);
  -webkit-backdrop-filter: blur(30px) saturate(155%);
  backdrop-filter: blur(30px) saturate(155%);
}

main.page-main[data-page-key="chat"] .chat-model-option {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) 18px;
  gap: 10px;
  align-items: center;
  min-height: 62px;
  padding: 8px 10px;
  border-radius: 14px;
  cursor: pointer;
}

main.page-main[data-page-key="chat"] .chat-model-option:hover {
  background: rgba(0, 0, 0, 0.045);
}

main.page-main[data-page-key="chat"] .chat-model-option:has(input:checked) {
  background: rgba(0, 113, 227, 0.08);
}

main.page-main[data-page-key="chat"] .chat-model-option > [data-icon] {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 11px;
  background: rgba(0, 113, 227, 0.1);
  color: var(--ui-blue, #0071e3);
}

main.page-main[data-page-key="chat"] .chat-model-option > [data-icon] svg {
  width: 18px;
  height: 18px;
}

main.page-main[data-page-key="chat"] .chat-model-option > span:nth-of-type(2) {
  display: grid;
  gap: 2px;
}

main.page-main[data-page-key="chat"] .chat-model-option b {
  color: var(--ui-ink, #1d1d1f);
  font-size: 13px;
  font-weight: 650;
}

main.page-main[data-page-key="chat"] .chat-model-option small {
  color: var(--ui-muted, #6e6e73);
  font-size: 11px;
}

main.page-main[data-page-key="chat"] .chat-send {
  background: #1d1d1f;
}

main.page-main[data-page-key="chat"] .chat-composer:has(textarea:placeholder-shown):not(.is-busy) .chat-send {
  background: rgba(29, 29, 31, 0.18);
  opacity: 1;
}

main.page-main[data-page-key="chat"] .chat-send-icon svg {
  width: 18px;
  height: 18px;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-starter-grid button {
  border-color: transparent;
  background: rgba(255, 255, 255, 0.065);
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-starter-grid button:hover {
  border-color: rgba(41, 151, 255, 0.26);
  background: rgba(255, 255, 255, 0.1);
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-persona-chip img,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-persona-chip-avatar {
  border-color: rgba(255, 255, 255, 0.12);
  background: #f5f5f7;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-message.user .chat-bubble {
  background: #0a84ff;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-composer {
  border-color: rgba(255, 255, 255, 0.13);
  background: rgba(28, 28, 30, 0.92);
  box-shadow:
    0 20px 64px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-composer:focus-within {
  border-color: rgba(41, 151, 255, 0.44);
  box-shadow:
    0 22px 70px rgba(0, 0, 0, 0.52),
    0 0 0 3px rgba(41, 151, 255, 0.11),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-tools-menu > summary,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-model-menu > summary {
  border-color: rgba(255, 255, 255, 0.11);
  background: rgba(255, 255, 255, 0.08);
  color: #f5f5f7;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-tools-menu > summary:hover,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-tools-menu[open] > summary,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-model-menu > summary:hover,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-model-menu[open] > summary {
  background: rgba(255, 255, 255, 0.14);
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-tools-active-dot {
  border-color: #1c1c1e;
  background: #2997ff;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-tools-popover,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-model-popover {
  border-color: rgba(255, 255, 255, 0.13);
  background: rgba(22, 24, 29, 0.78);
  box-shadow: 0 28px 78px rgba(0, 0, 0, 0.58);
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-tool-option:hover,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-model-option:hover,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-prompt-list button:hover {
  background: rgba(255, 255, 255, 0.075);
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-tool-option:has(input:checked),
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-model-option:has(input:checked) {
  background: rgba(41, 151, 255, 0.15);
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-tool-icon {
  background: rgba(255, 255, 255, 0.09);
  color: #f5f5f7;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-tool-copy b,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-model-option b,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-prompt-list button {
  color: #f5f5f7;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-tool-copy small,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-model-option small {
  color: #a1a1a6;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-send {
  background: #f5f5f7;
  color: #111;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-composer:has(textarea:placeholder-shown):not(.is-busy) .chat-send {
  background: rgba(245, 245, 247, 0.22);
  color: rgba(245, 245, 247, 0.72);
}

@media (max-width: 720px) {
  main.page-main[data-page-key="chat"] .chat-empty-state h1 {
    max-width: 20ch;
    font-size: clamp(20px, 6vw, 25px);
  }

  main.page-main[data-page-key="chat"] .chat-empty-state h1[data-copy-size="medium"] {
    max-width: 22ch;
    font-size: clamp(18px, 5.2vw, 22px);
  }

  main.page-main[data-page-key="chat"] .chat-empty-state h1[data-copy-size="long"] {
    max-width: 26ch;
    font-size: clamp(16px, 4.5vw, 19px);
    line-height: 1.35;
  }

  main.page-main[data-page-key="chat"] .chat-starter-grid {
    display: flex;
    gap: 7px;
    overflow-x: auto;
    padding: 0 2px 5px;
    scroll-snap-type: x proximity;
    scrollbar-width: none;
  }

  main.page-main[data-page-key="chat"] .chat-starter-grid::-webkit-scrollbar {
    display: none;
  }

  main.page-main[data-page-key="chat"] .chat-starter-grid button,
  main.page-main[data-page-key="chat"] .chat-starter-grid button:nth-child(n + 5) {
    display: block;
    flex: 0 0 min(78vw, 300px);
    scroll-snap-align: start;
  }

  main.page-main[data-page-key="chat"] .chat-message.user {
    max-width: 88%;
  }

  main.page-main[data-page-key="chat"] .chat-composer {
    padding: 9px 9px 7px;
    border-radius: 23px;
  }

  main.page-main[data-page-key="chat"] .chat-tools-popover {
    left: -2px;
    width: min(370px, calc(100vw - 20px));
  }

  main.page-main[data-page-key="chat"] .chat-model-popover {
    left: -42px;
  }

  main.page-main[data-page-key="chat"] .chat-model-menu > summary {
    max-width: 132px;
    padding-inline: 9px;
  }

  main.page-main[data-page-key="chat"] .chat-model-menu > summary #chatReasoningLabel {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
}

/* Single-line composer: tools, mode, input and send/stop share one surface. */
main.page-main[data-page-key="chat"] .chat-composer {
  display: block;
  padding: 7px;
  border-radius: 24px;
}

main.page-main[data-page-key="chat"] .chat-composer-bar {
  display: flex;
  width: 100%;
  min-width: 0;
  gap: 6px;
  align-items: center;
}

main.page-main[data-page-key="chat"] .chat-composer-controls {
  flex: 0 0 auto;
  gap: 5px;
}

main.page-main[data-page-key="chat"] .chat-composer textarea,
main.page-main[data-page-key="chat"] .chat-composer textarea:focus {
  flex: 1 1 auto;
  width: auto;
  min-width: 0;
  min-height: 38px;
  max-height: 100px;
  padding: 7px 8px 5px;
  overflow-y: auto;
  line-height: 1.5;
}

main.page-main[data-page-key="chat"] .chat-tools-menu > summary,
main.page-main[data-page-key="chat"] .chat-model-menu > summary {
  height: 38px;
}

main.page-main[data-page-key="chat"] .chat-tools-menu > summary {
  width: 38px;
}

main.page-main[data-page-key="chat"] .chat-send {
  width: 38px;
  height: 38px;
  min-width: 38px;
  min-height: 38px;
}

main.page-main[data-page-key="chat"] .chat-form.is-busy textarea {
  cursor: default;
}

main.page-main[data-page-key="chat"] .chat-form.is-busy .chat-send-icon {
  display: inline-flex;
}

main.page-main[data-page-key="chat"] .chat-form.is-busy .chat-send-icon svg {
  width: 16px;
  height: 16px;
}

@media (max-width: 720px) {
  main.page-main[data-page-key="chat"] .chat-composer {
    padding: 6px;
    border-radius: 22px;
  }

  main.page-main[data-page-key="chat"] .chat-composer-bar {
    gap: 4px;
  }

  main.page-main[data-page-key="chat"] .chat-composer-controls {
    gap: 4px;
  }

  main.page-main[data-page-key="chat"] .chat-tools-menu > summary,
  main.page-main[data-page-key="chat"] .chat-model-menu > summary,
  main.page-main[data-page-key="chat"] .chat-send {
    height: 36px;
    min-height: 36px;
  }

  main.page-main[data-page-key="chat"] .chat-tools-menu > summary,
  main.page-main[data-page-key="chat"] .chat-send {
    width: 36px;
    min-width: 36px;
  }

  main.page-main[data-page-key="chat"] .chat-model-menu > summary {
    max-width: 118px;
    padding: 0 8px;
    gap: 5px;
  }

  main.page-main[data-page-key="chat"] .chat-model-summary-icon svg {
    width: 15px;
    height: 15px;
  }

  main.page-main[data-page-key="chat"] .chat-composer textarea,
  main.page-main[data-page-key="chat"] .chat-composer textarea:focus {
    min-height: 36px;
    max-height: 88px;
    padding: 6px 5px 4px;
    font-size: 16px;
  }

  main.page-main[data-page-key="chat"] .chat-tools-popover {
    left: -6px;
    width: calc(100vw - 20px);
    max-height: min(64dvh, 540px);
    padding: 10px;
    border-radius: 24px;
    overscroll-behavior: contain;
    transform-origin: left bottom;
    animation: chatToolsEnter 180ms cubic-bezier(0.2, 0.8, 0.2, 1);
  }

  main.page-main[data-page-key="chat"] .chat-source-options {
    gap: 2px;
  }

  main.page-main[data-page-key="chat"] .chat-tool-option {
    min-height: 54px;
    padding: 7px 8px;
  }

  main.page-main[data-page-key="chat"] .chat-inspiration-section {
    padding-bottom: 2px;
  }

  main.page-main[data-page-key="chat"] .chat-prompt-list {
    display: grid;
    grid-template-columns: 1fr;
    max-height: 190px;
    overflow-y: auto;
  }

  main.page-main[data-page-key="chat"] .chat-prompt-list button {
    min-height: 42px;
    padding: 9px 10px;
  }

  main.page-main[data-page-key="chat"] .chat-model-popover {
    left: -46px;
    width: min(310px, calc(100vw - 20px));
  }

  body:has(.music-bottom-player.is-visible) main.page-main[data-page-key="chat"] .chat-tools-popover,
  body:has(.music-bottom-player.is-visible) main.page-main[data-page-key="chat"] .chat-model-popover {
    bottom: calc(100% + 10px);
  }
}

@media (max-width: 390px) {
  main.page-main[data-page-key="chat"] .chat-model-menu > summary {
    max-width: 42px;
    width: 42px;
    justify-content: center;
    padding: 0;
  }

  main.page-main[data-page-key="chat"] .chat-model-menu > summary #chatReasoningLabel,
  main.page-main[data-page-key="chat"] .chat-model-chevron {
    display: none;
  }

  main.page-main[data-page-key="chat"] .chat-composer textarea,
  main.page-main[data-page-key="chat"] .chat-composer textarea:focus {
    padding-inline: 3px;
  }
}

/* Floating-AI command bar shared by the standalone Chat surface. */
main.page-main[data-page-key="chat"] .chat-composer {
  position: relative;
  display: block;
  width: min(960px, 100%);
  min-height: 58px;
  padding: 6px 8px;
  overflow: visible;
  border: 1px solid rgba(82, 96, 112, .20);
  border-radius: 999px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, .62), rgba(241, 245, 250, .42)),
    rgba(247, 248, 250, .76);
  box-shadow:
    0 18px 54px rgba(20, 32, 48, .13),
    inset 0 1px 0 rgba(255, 255, 255, .88);
  -webkit-backdrop-filter: blur(20px) saturate(142%);
  backdrop-filter: blur(20px) saturate(142%);
}

main.page-main[data-page-key="chat"] .chat-composer:focus-within {
  border-color: rgba(23, 105, 224, .34);
  box-shadow:
    0 20px 62px rgba(20, 32, 48, .15),
    0 0 0 3px rgba(23, 105, 224, .08),
    inset 0 1px 0 rgba(255, 255, 255, .90);
}

main.page-main[data-page-key="chat"] .chat-composer-bar {
  min-height: 44px;
  gap: 5px;
  align-items: center;
}

main.page-main[data-page-key="chat"] .chat-composer-controls {
  display: flex;
  flex: 0 0 44px;
  width: 44px;
}

main.page-main[data-page-key="chat"] .chat-tools-menu,
main.page-main[data-page-key="chat"] .chat-model-menu {
  flex: 0 0 44px;
  width: 44px;
  min-width: 44px;
}

main.page-main[data-page-key="chat"] .chat-tools-menu > summary,
main.page-main[data-page-key="chat"] .chat-model-menu > summary,
main.page-main[data-page-key="chat"] .chat-send {
  box-sizing: border-box;
  display: grid;
  flex: 0 0 44px;
  width: 44px;
  min-width: 44px;
  max-width: 44px;
  height: 44px;
  min-height: 44px;
  padding: 0;
  place-items: center;
  aspect-ratio: 1;
  border: 1px solid rgba(82, 96, 112, .16);
  border-radius: 50%;
  line-height: 0;
}

main.page-main[data-page-key="chat"] .chat-model-menu > summary #chatReasoningLabel,
main.page-main[data-page-key="chat"] .chat-model-menu > summary .chat-model-chevron {
  display: none;
}

main.page-main[data-page-key="chat"] .chat-model-summary-icon,
main.page-main[data-page-key="chat"] .chat-tools-menu > summary [data-icon],
main.page-main[data-page-key="chat"] .chat-send-icon {
  display: grid;
  width: 19px;
  height: 19px;
  margin: 0;
  place-items: center;
}

main.page-main[data-page-key="chat"] .chat-model-summary-icon svg,
main.page-main[data-page-key="chat"] .chat-tools-menu > summary svg,
main.page-main[data-page-key="chat"] .chat-send-icon svg {
  display: block;
  width: 18px;
  height: 18px;
}

main.page-main[data-page-key="chat"] .chat-composer textarea,
main.page-main[data-page-key="chat"] .chat-composer textarea:focus {
  flex: 1 1 auto;
  width: auto;
  min-width: 0;
  min-height: 44px;
  max-height: 88px;
  margin: 0;
  padding: 11px 9px 9px;
  border: 0;
  background: transparent;
  box-shadow: none;
  line-height: 1.45;
  resize: none;
}

main.page-main[data-page-key="chat"] .chat-model-popover {
  right: 0;
  left: auto;
}

main.page-main[data-page-key="chat"] .chat-local-search {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 11px);
  z-index: 22;
  width: min(820px, calc(100vw - 28px));
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  transform: translateX(-50%);
}

main.page-main[data-page-key="chat"] .chat-local-search[hidden] {
  display: none;
}

main.page-main[data-page-key="chat"] .chat-local-search-status {
  display: flex;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 12px;
  text-align: center;
}

main.page-main[data-page-key="chat"] .chat-local-search-capsules {
  display: flex;
  max-height: 110px;
  padding: 1px;
  overflow: auto;
  flex-wrap: wrap;
  justify-content: center;
  gap: 7px;
  scrollbar-width: thin;
}

main.page-main[data-page-key="chat"] .chat-local-search-pill {
  display: inline-flex;
  min-width: 0;
  max-width: min(280px, 100%);
  height: 40px;
  padding: 4px 10px 4px 5px;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(23, 105, 224, .16);
  border-radius: 999px;
  color: var(--text-main);
  background: rgba(255, 255, 255, .62);
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .72);
}

main.page-main[data-page-key="chat"] .chat-local-search-pill > img {
  display: grid;
  flex: 0 0 30px;
  width: 30px;
  height: 30px;
  overflow: hidden;
  place-items: center;
  border-radius: 50%;
  object-fit: cover;
  background: rgba(23, 105, 224, .09);
}

main.page-main[data-page-key="chat"] .chat-local-search-pill > span {
  display: grid;
  min-width: 0;
  text-align: left;
}

main.page-main[data-page-key="chat"] .chat-local-search-pill small,
main.page-main[data-page-key="chat"] .chat-local-search-pill strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

main.page-main[data-page-key="chat"] .chat-local-search-pill small {
  color: var(--text-muted);
  font-size: 9px;
}

main.page-main[data-page-key="chat"] .chat-local-search-pill strong {
  font-size: 12px;
  font-weight: 720;
}

main.page-main[data-page-key="chat"] .chat-local-search-pill > i {
  display: grid;
  flex: 0 0 14px;
  width: 14px;
  height: 14px;
  place-items: center;
  color: var(--text-muted);
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-composer,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-composer {
  border-color: rgba(255, 255, 255, .15);
  background:
    linear-gradient(135deg, rgba(48, 52, 60, .76), rgba(24, 27, 33, .62)),
    rgba(24, 27, 33, .78);
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-local-search-pill {
  border-color: rgba(90, 169, 255, .20);
  background: rgba(255, 255, 255, .07);
}

@media (max-width: 720px) {
  main.page-main[data-page-key="chat"] .chat-composer {
    min-height: 50px;
    padding: 6px;
  }

  main.page-main[data-page-key="chat"] .chat-composer-bar {
    min-height: 38px;
    gap: 4px;
  }

  main.page-main[data-page-key="chat"] .chat-composer-controls,
  main.page-main[data-page-key="chat"] .chat-tools-menu,
  main.page-main[data-page-key="chat"] .chat-model-menu {
    flex-basis: 38px;
    width: 38px;
    min-width: 38px;
  }

  main.page-main[data-page-key="chat"] .chat-tools-menu > summary,
  main.page-main[data-page-key="chat"] .chat-model-menu > summary,
  main.page-main[data-page-key="chat"] .chat-send {
    flex-basis: 38px;
    width: 38px;
    min-width: 38px;
    max-width: 38px;
    height: 38px;
    min-height: 38px;
  }

  main.page-main[data-page-key="chat"] .chat-composer textarea,
  main.page-main[data-page-key="chat"] .chat-composer textarea:focus {
    min-height: 38px;
    padding: 8px 4px 6px;
    font-size: 16px;
  }

  main.page-main[data-page-key="chat"] .chat-local-search {
    bottom: calc(100% + 8px);
  }

  main.page-main[data-page-key="chat"] .chat-local-search-capsules {
    max-height: 98px;
    flex-wrap: nowrap;
    justify-content: flex-start;
  }

  main.page-main[data-page-key="chat"] .chat-local-search-pill {
    flex: 0 0 auto;
    max-width: 220px;
    height: 38px;
  }
}

@keyframes chatToolsEnter {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  main.page-main[data-page-key="chat"] .chat-tools-popover {
    animation: none;
  }
}

/* Modal interaction layer: an outside tap closes menus without activating content below. */
.chat-menu-scrim {
  display: none !important;
  pointer-events: none !important;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.chat-menu-scrim[hidden] {
  display: none !important;
  pointer-events: none !important;
}

main.page-main[data-page-key="chat"] .chat-toolbar.is-menu-active,
main.page-main[data-page-key="chat"] .chat-composer.is-menu-active {
  z-index: 70;
}

body.chat-menu-open .music-bottom-player {
  pointer-events: none;
}

/* The selected AI capabilities stay visible inside the active reply. */
main.page-main[data-page-key="chat"] .chat-capability-activity {
  width: min(100%, 620px);
  margin: 0 0 14px;
  color: var(--ui-muted, #6e6e73);
}

main.page-main[data-page-key="chat"] .chat-capability-activity > summary {
  min-height: 34px;
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  cursor: pointer;
  color: inherit;
  font-size: 13px;
  line-height: 1.4;
  user-select: none;
}

main.page-main[data-page-key="chat"] .chat-capability-activity > summary::-webkit-details-marker {
  display: none;
}

main.page-main[data-page-key="chat"] .chat-capability-activity > summary::after {
  content: "";
  width: 7px;
  height: 7px;
  margin-left: 2px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  transition: transform 220ms ease;
}

main.page-main[data-page-key="chat"] .chat-capability-activity[open] > summary::after {
  transform: rotate(225deg) translate(-1px, -1px);
}

main.page-main[data-page-key="chat"] .chat-capability-summary-icon {
  display: grid;
  width: 20px;
  height: 20px;
  place-items: center;
}

main.page-main[data-page-key="chat"] .chat-capability-summary-icon svg {
  width: 17px;
  height: 17px;
}

main.page-main[data-page-key="chat"] .chat-capability-summary-label {
  font-weight: 560;
}

main.page-main[data-page-key="chat"] .chat-capability-list {
  display: grid;
  gap: 4px;
  padding: 4px 0 8px 28px;
}

main.page-main[data-page-key="chat"] .chat-capability-item {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) 12px;
  min-height: 38px;
  gap: 8px;
  align-items: center;
  padding: 4px 2px;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--ui-ink, #1d1d1f);
  transition: opacity 180ms ease;
}

main.page-main[data-page-key="chat"] .chat-capability-item[data-capability="reasoning"] {
  color: #6e4fea;
}

main.page-main[data-page-key="chat"] .chat-capability-item[data-capability="react"] {
  color: #53657e;
}

main.page-main[data-page-key="chat"] .chat-capability-item[data-capability="site"] {
  color: #008d75;
}

main.page-main[data-page-key="chat"] .chat-capability-icon {
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 8px;
  background: transparent;
  color: #0071e3;
  box-shadow: none;
}

main.page-main[data-page-key="chat"] .chat-capability-item[data-capability="reasoning"] .chat-capability-icon {
  color: #6e4fea;
}

main.page-main[data-page-key="chat"] .chat-capability-item[data-capability="react"] .chat-capability-icon {
  color: #53657e;
}

main.page-main[data-page-key="chat"] .chat-capability-item[data-capability="site"] .chat-capability-icon {
  color: #008d75;
}

main.page-main[data-page-key="chat"] .chat-capability-icon svg {
  width: 16px;
  height: 16px;
}

main.page-main[data-page-key="chat"] .chat-capability-copy {
  display: grid;
  min-width: 0;
  gap: 1px;
}

main.page-main[data-page-key="chat"] .chat-capability-copy b {
  color: inherit;
  font-size: 13px;
  font-weight: 650;
  line-height: 1.35;
}

main.page-main[data-page-key="chat"] .chat-capability-copy small {
  color: var(--ui-muted, #6e6e73);
  font-size: 11.5px;
  line-height: 1.45;
  overflow-wrap: anywhere;
  white-space: normal;
}

main.page-main[data-page-key="chat"] .chat-capability-state {
  position: relative;
  display: block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

main.page-main[data-page-key="chat"] .chat-capability-item.is-active .chat-capability-state {
  box-sizing: border-box;
  border: 2px solid rgba(0, 113, 227, 0.2);
  border-top-color: #0071e3;
  animation: chatCapabilitySpin 800ms linear infinite;
}

main.page-main[data-page-key="chat"] .chat-capability-item.is-complete .chat-capability-state {
  background: #20a66a;
}

main.page-main[data-page-key="chat"] .chat-capability-item.is-complete .chat-capability-state::after {
  content: "";
  position: absolute;
  top: 1px;
  left: 3.5px;
  width: 3px;
  height: 6px;
  border-right: 1.7px solid #fff;
  border-bottom: 1.7px solid #fff;
  transform: rotate(45deg);
}

main.page-main[data-page-key="chat"] .chat-capability-item.is-warning .chat-capability-state {
  background: #e29321;
}

main.page-main[data-page-key="chat"] .chat-capability-item.is-warning .chat-capability-state::after {
  content: "!";
  position: absolute;
  inset: 0;
  color: #fff;
  font-size: 10px;
  font-weight: 750;
  line-height: 12px;
  text-align: center;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-capability-item {
  border-color: transparent;
  background: transparent;
  color: #f5f5f7;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-capability-item[data-capability="reasoning"] {
  border-color: transparent;
  background: transparent;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-capability-item[data-capability="react"] {
  border-color: transparent;
  background: transparent;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-capability-item[data-capability="site"] {
  border-color: transparent;
  background: transparent;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-capability-icon {
  background: transparent;
  box-shadow: none;
  color: #64b5ff;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-capability-item[data-capability="reasoning"] .chat-capability-icon {
  color: #b49cff;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-capability-item[data-capability="react"] .chat-capability-icon {
  color: #aebbd0;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-capability-item[data-capability="site"] .chat-capability-icon {
  color: #66d9bd;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-capability-copy small {
  color: #a1a1a6;
}

@keyframes chatCapabilitySpin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 720px) {
  main.page-main[data-page-key="chat"] .chat-capability-activity {
    width: 100%;
    gap: 6px;
    margin-bottom: 11px;
  }

  main.page-main[data-page-key="chat"] .chat-capability-item {
    min-height: 36px;
    padding-block: 3px;
  }
}

/* Compact post-answer tool report, inspired by modern assistant source panels. */
main.page-main[data-page-key="chat"] .chat-tool-report {
  width: min(100%, 680px);
  margin-top: 16px;
  border-top: 1px solid rgba(15, 23, 42, 0.08);
  color: var(--ui-muted, #6e6e73);
}

main.page-main[data-page-key="chat"] .chat-tool-report > summary {
  min-height: 44px;
  display: grid;
  grid-template-columns: 22px minmax(0, auto) minmax(0, 1fr) 8px;
  gap: 8px;
  align-items: center;
  list-style: none;
  cursor: pointer;
  user-select: none;
}

main.page-main[data-page-key="chat"] .chat-tool-report > summary::-webkit-details-marker {
  display: none;
}

main.page-main[data-page-key="chat"] .chat-tool-report > summary::after {
  content: "";
  width: 7px;
  height: 7px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  transition: transform 220ms ease;
}

main.page-main[data-page-key="chat"] .chat-tool-report[open] > summary::after {
  transform: rotate(225deg) translate(-1px, -1px);
}

main.page-main[data-page-key="chat"] .chat-tool-report-icon {
  display: grid;
  width: 22px;
  height: 22px;
  place-items: center;
}

main.page-main[data-page-key="chat"] .chat-tool-report-icon svg {
  width: 18px;
  height: 18px;
}

main.page-main[data-page-key="chat"] .chat-tool-report-title {
  color: var(--ui-ink, #1d1d1f);
  font-size: 13px;
  font-weight: 620;
}

main.page-main[data-page-key="chat"] .chat-tool-report-meta {
  min-width: 0;
  font-size: 12px;
  overflow-wrap: anywhere;
}

main.page-main[data-page-key="chat"] .chat-tool-report-body {
  display: grid;
  gap: 14px;
  padding: 4px 0 14px 30px;
}

main.page-main[data-page-key="chat"] .chat-tool-report-statuses {
  display: grid;
  gap: 8px;
}

main.page-main[data-page-key="chat"] .chat-tool-report-status {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 8px;
  align-items: start;
}

main.page-main[data-page-key="chat"] .chat-tool-report-status-icon {
  display: grid;
  width: 22px;
  height: 22px;
  place-items: center;
  color: #0071e3;
}

main.page-main[data-page-key="chat"] .chat-tool-report-status-icon svg {
  width: 16px;
  height: 16px;
}

main.page-main[data-page-key="chat"] .chat-tool-report-status-copy {
  display: grid;
  gap: 1px;
}

main.page-main[data-page-key="chat"] .chat-tool-report-status-copy b {
  color: var(--ui-ink, #1d1d1f);
  font-size: 12.5px;
  font-weight: 620;
}

main.page-main[data-page-key="chat"] .chat-tool-report-status-copy small {
  color: inherit;
  font-size: 11.5px;
  line-height: 1.45;
}

main.page-main[data-page-key="chat"] .chat-tool-report-sources {
  display: grid;
  gap: 7px;
}

main.page-main[data-page-key="chat"] .chat-tool-report-sources > strong {
  color: var(--ui-ink, #1d1d1f);
  font-size: 12px;
  font-weight: 620;
}

main.page-main[data-page-key="chat"] .chat-tool-source {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 9px;
  align-items: start;
  padding: 8px 10px;
  border: 1px solid rgba(15, 23, 42, 0.07);
  border-radius: 12px;
  color: inherit;
  background: rgba(248, 250, 252, 0.58);
  text-decoration: none;
  transition: background 180ms ease, border-color 180ms ease;
}

main.page-main[data-page-key="chat"] .chat-tool-source:hover {
  border-color: rgba(0, 113, 227, 0.18);
  background: rgba(240, 247, 255, 0.75);
}

main.page-main[data-page-key="chat"] .chat-tool-source-provider {
  max-width: 120px;
  padding: 3px 7px;
  border-radius: 999px;
  color: #53657e;
  background: rgba(83, 101, 126, 0.09);
  font-size: 10px;
  line-height: 1.2;
  overflow-wrap: anywhere;
}

main.page-main[data-page-key="chat"] .chat-tool-source-copy {
  display: grid;
  min-width: 0;
  gap: 2px;
}

main.page-main[data-page-key="chat"] .chat-tool-source-copy b {
  color: var(--ui-ink, #1d1d1f);
  font-size: 12px;
  font-weight: 620;
  line-height: 1.35;
  overflow-wrap: anywhere;
  white-space: normal;
}

main.page-main[data-page-key="chat"] .chat-tool-source-copy small {
  color: inherit;
  font-size: 11px;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-tool-report {
  border-top-color: rgba(255, 255, 255, 0.1);
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-tool-report-title,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-tool-report-status-copy b,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-tool-report-sources > strong,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-tool-source-copy b {
  color: #f5f5f7;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-tool-source {
  border-color: rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.045);
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-tool-source:hover {
  border-color: rgba(100, 181, 255, 0.2);
  background: rgba(41, 151, 255, 0.08);
}

@media (max-width: 720px) {
  main.page-main[data-page-key="chat"] .chat-tool-report > summary {
    grid-template-columns: 20px minmax(0, 1fr) 8px;
  }

  main.page-main[data-page-key="chat"] .chat-tool-report-meta {
    grid-column: 2;
    font-size: 11px;
  }

  main.page-main[data-page-key="chat"] .chat-tool-report > summary::after {
    grid-column: 3;
    grid-row: 1 / span 2;
  }

  main.page-main[data-page-key="chat"] .chat-tool-report-body {
    padding-left: 0;
  }

  main.page-main[data-page-key="chat"] .chat-tool-source {
    grid-template-columns: minmax(0, 1fr);
  }

  main.page-main[data-page-key="chat"] .chat-tool-source-provider {
    width: fit-content;
    max-width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  main.page-main[data-page-key="chat"] .chat-capability-item.is-active .chat-capability-state {
    animation: none;
  }
}

/* Shared visual contract with the floating AI surface. */
main.page-main[data-page-key="chat"] .chat-persona-avatar.is-brand-mark,
main.page-main[data-page-key="chat"] .chat-avatar.is-brand-mark {
  box-sizing: border-box;
  padding: 6px;
}

main.page-main[data-page-key="chat"] .chat-persona-avatar.is-brand-mark img,
main.page-main[data-page-key="chat"] .chat-avatar.is-brand-mark img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

main.page-main[data-page-key="chat"] .chat-message .chat-avatar {
  border: 1px solid rgba(82, 96, 112, .15);
  background: rgba(255, 255, 255, .72);
}

main.page-main[data-page-key="chat"] .chat-message.user .chat-bubble {
  box-sizing: border-box;
  border: 1px solid rgba(23, 105, 224, .40);
  background: #1769e0;
  box-shadow: 0 8px 24px rgba(23, 105, 224, .14);
}

main.page-main[data-page-key="chat"] .chat-tools-menu > summary,
main.page-main[data-page-key="chat"] .chat-send {
  box-sizing: border-box;
  flex: 0 0 38px;
  width: 38px;
  min-width: 38px;
  height: 38px;
  min-height: 38px;
  aspect-ratio: 1;
  border-radius: 50%;
}

main.page-main[data-page-key="chat"] .chat-model-menu > summary,
main.page-main[data-page-key="chat"] .chat-icon-btn.chat-new-button {
  box-sizing: border-box;
  min-height: 38px;
  height: 38px;
  border: 1px solid rgba(82, 96, 112, .14);
}

main.page-main[data-page-key="chat"] .chat-send {
  border: 1px solid rgba(29, 29, 31, .16);
}

.chat-action-dialog {
  z-index: 900;
  pointer-events: auto;
  border: 1px solid rgba(82, 96, 112, .20);
  background: rgba(249, 250, 252, .92);
  box-shadow:
    0 30px 90px rgba(15, 23, 42, .24),
    inset 0 1px 0 rgba(255, 255, 255, .86);
}

.chat-action-dialog-option,
.chat-action-dialog-button {
  box-sizing: border-box;
  min-height: 46px;
  border: 1px solid rgba(82, 96, 112, .14);
}

.chat-action-dialog-button.is-primary {
  border-color: rgba(23, 105, 224, .55);
  background: #1769e0;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-message .chat-avatar {
  border-color: rgba(255, 255, 255, .13);
  background: rgba(255, 255, 255, .08);
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-message.user .chat-bubble {
  border-color: rgba(74, 158, 255, .44);
  background: #1769e0;
}

:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-model-menu > summary,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-icon-btn.chat-new-button,
:root[data-theme="dark"] main.page-main[data-page-key="chat"] .chat-tools-menu > summary {
  border-color: rgba(255, 255, 255, .13);
}

:root[data-theme="dark"] .chat-action-dialog {
  border-color: rgba(255, 255, 255, .16);
  background: rgba(25, 27, 31, .94);
}

/* Unified custom action sheet — remains available after PJAX navigation. */
.chat-action-dialog {
  width: min(520px, calc(100vw - 28px));
  border-color: var(--floating-shell-border, rgba(82, 96, 112, .20));
  border-radius: 32px;
  background: rgba(252, 252, 253, .94);
}

.chat-action-dialog .chat-action-dialog-panel {
  padding: 0;
}

.chat-action-dialog .chat-action-dialog-header {
  grid-template-columns: 38px minmax(0, 1fr);
  padding: 24px 26px 0;
}

.chat-action-dialog .chat-action-dialog-icon {
  width: 38px;
  height: 38px;
  border-radius: 13px;
}

.chat-action-dialog .chat-action-dialog-description {
  margin: 15px 0 0;
  padding: 0 26px;
  font-size: 15px;
  line-height: 1.62;
}

.chat-action-dialog .chat-action-dialog-options {
  margin: 16px 26px 0;
}

.chat-action-dialog .chat-action-dialog-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin-top: 22px;
  border-top: 1px solid rgba(82, 96, 112, .18);
}

.chat-action-dialog .chat-action-dialog-button {
  min-height: 58px;
  border: 0;
  border-radius: 0;
  color: #0879e8;
  background: transparent;
}

.chat-action-dialog .chat-action-dialog-button + .chat-action-dialog-button {
  border-left: 1px solid rgba(82, 96, 112, .18);
}

.chat-action-dialog .chat-action-dialog-button.is-secondary {
  color: #5f6368;
  background: transparent;
}

.chat-action-dialog .chat-action-dialog-button.is-primary {
  color: #0879e8;
  border-color: transparent;
  background: transparent;
}

:root[data-theme="dark"] .chat-action-dialog .chat-action-dialog-actions,
:root[data-theme="dark"] .chat-action-dialog .chat-action-dialog-button + .chat-action-dialog-button {
  border-color: rgba(255, 255, 255, .14);
}

:root[data-theme="dark"] .chat-action-dialog .chat-action-dialog-button.is-secondary {
  color: #c6c6ca;
  background: transparent;
}

:root[data-theme="dark"] .chat-action-dialog .chat-action-dialog-button.is-primary {
  color: #5aa9ff;
  background: transparent;
}

@media (max-width: 640px) {
  .chat-action-dialog {
    border-radius: 28px;
  }
}

@media (max-width: 720px) {
  main.page-main[data-page-key="chat"] .chat-tools-menu > summary,
  main.page-main[data-page-key="chat"] .chat-send {
    flex-basis: 36px;
    width: 36px;
    min-width: 36px;
    height: 36px;
    min-height: 36px;
  }

  main.page-main[data-page-key="chat"] .chat-model-menu > summary,
  main.page-main[data-page-key="chat"] .chat-icon-btn.chat-new-button {
    min-height: 36px;
    height: 36px;
  }

  main.page-main[data-page-key="chat"] .chat-icon-btn.chat-new-button {
    width: 36px;
    min-width: 36px;
    max-width: 36px;
    flex: 0 0 36px;
    padding: 0;
    border-radius: 50%;
  }
}

/* Keep the standalone composer on the same final geometry as the floating bar. */
main.page-main[data-page-key="chat"] .chat-composer {
  position: relative;
  display: block;
  width: min(960px, 100%);
  min-height: 58px;
  padding: 6px 8px;
  overflow: visible;
  border-radius: 999px;
}

main.page-main[data-page-key="chat"] .chat-composer-bar {
  min-height: 44px;
  gap: 5px;
  align-items: center;
}

main.page-main[data-page-key="chat"] .chat-composer-controls,
main.page-main[data-page-key="chat"] .chat-tools-menu,
main.page-main[data-page-key="chat"] .chat-model-menu {
  flex: 0 0 44px;
  width: 44px;
  min-width: 44px;
}

main.page-main[data-page-key="chat"] .chat-tools-menu > summary,
main.page-main[data-page-key="chat"] .chat-model-menu > summary,
main.page-main[data-page-key="chat"] .chat-send {
  display: grid;
  flex: 0 0 44px;
  width: 44px;
  min-width: 44px;
  max-width: 44px;
  height: 44px;
  min-height: 44px;
  padding: 0;
  place-items: center;
  aspect-ratio: 1;
  border-radius: 50%;
}

main.page-main[data-page-key="chat"] .chat-model-menu > summary #chatReasoningLabel,
main.page-main[data-page-key="chat"] .chat-model-menu > summary .chat-model-chevron {
  display: none;
}

main.page-main[data-page-key="chat"] .chat-composer textarea,
main.page-main[data-page-key="chat"] .chat-composer textarea:focus {
  flex: 1 1 auto;
  width: auto;
  min-width: 0;
  min-height: 44px;
  max-height: 88px;
  padding: 11px 9px 9px;
  border: 0;
  background: transparent;
  box-shadow: none;
}

@media (max-width: 720px) {
  main.page-main[data-page-key="chat"] .chat-composer {
    min-height: 50px;
    padding: 6px;
  }

  main.page-main[data-page-key="chat"] .chat-composer-bar {
    min-height: 38px;
    gap: 4px;
  }

  main.page-main[data-page-key="chat"] .chat-composer-controls,
  main.page-main[data-page-key="chat"] .chat-tools-menu,
  main.page-main[data-page-key="chat"] .chat-model-menu,
  main.page-main[data-page-key="chat"] .chat-tools-menu > summary,
  main.page-main[data-page-key="chat"] .chat-model-menu > summary,
  main.page-main[data-page-key="chat"] .chat-send {
    flex-basis: 38px;
    width: 38px;
    min-width: 38px;
    max-width: 38px;
    height: 38px;
    min-height: 38px;
  }

  main.page-main[data-page-key="chat"] .chat-composer textarea,
  main.page-main[data-page-key="chat"] .chat-composer textarea:focus {
    min-height: 38px;
    padding: 8px 4px 6px;
    font-size: 16px;
  }
}

/* Final message geometry and mobile icon alignment. */
main.page-main[data-page-key="chat"] .chat-message.user {
  width: fit-content;
  max-width: min(68%, 620px);
  margin-left: auto;
}

main.page-main[data-page-key="chat"] .chat-message.user .chat-bubble {
  width: fit-content;
  max-width: 100%;
  padding: 11px 17px;
  border: 1px solid rgba(102, 174, 255, .66);
  border-radius: 24px 10px 24px 24px;
  background:
    linear-gradient(145deg, rgba(62, 139, 244, .24), transparent 52%),
    rgba(23, 105, 224, .88);
  box-shadow:
    0 12px 30px rgba(23, 105, 224, .20),
    inset 0 1px 0 rgba(255, 255, 255, .22);
  -webkit-backdrop-filter: blur(16px) saturate(135%);
  backdrop-filter: blur(16px) saturate(135%);
}

@media (max-width: 720px) {
  main.page-main[data-page-key="chat"] .chat-message.user {
    max-width: min(80%, 520px);
  }

  main.page-main[data-page-key="chat"] .chat-message.user .chat-bubble {
    padding: 10px 15px;
    border-radius: 22px 9px 22px 22px;
  }

  main.page-main[data-page-key="chat"] .chat-icon-btn.chat-new-button {
    display: grid;
    place-items: center;
    line-height: 0;
  }

  main.page-main[data-page-key="chat"] .chat-new-button [data-icon] {
    display: grid;
    width: 20px;
    height: 20px;
    place-items: center;
    margin: 0;
    transform: translate3d(.5px, -.5px, 0);
  }

  main.page-main[data-page-key="chat"] .chat-new-button [data-icon] svg {
    display: block;
    width: 18px;
    height: 18px;
    margin: 0;
  }
}

@media (max-width: 390px) {
  main.page-main[data-page-key="chat"] .chat-model-menu > summary {
    width: 36px;
    min-width: 36px;
    max-width: 36px;
    flex: 0 0 36px;
    padding: 0;
    border-radius: 50%;
  }
}