/* Keera Chat. One stylesheet, no build step. The tokens are Keera Gateway's
   panel's, so the two read as one product. Tokens first, then layout, then
   components. */

@font-face {
  font-family: "Space Grotesk";
  src: url("fonts/space-grotesk.woff2") format("woff2");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}

:root {
  color-scheme: light;
  --bg: #f7f7f5;
  --surface: #ffffff;
  --surface-2: #fafaf9;
  --surface-3: #f1f0ed;
  --border: #e4e2dd;
  --border-strong: #d2cfc8;
  --text: #17171a;
  --muted: #6b6a66;
  --faint: #93918b;
  --accent: #1f5bc8;
  --accent-soft: #e8effc;
  --accent-fg: #ffffff;
  --good: #1c7a4d;
  --good-soft: #e6f4ec;
  --warn: #9a5b00;
  --warn-soft: #fbf0dd;
  --bad: #a92a20;
  --bad-soft: #fbeae8;
  --shadow: 0 1px 2px rgb(23 23 26 / 6%), 0 8px 24px -12px rgb(23 23 26 / 18%);
  --radius: 10px;
  --radius-sm: 7px;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --display: "Space Grotesk", var(--sans);
  --column: 768px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #121215;
    --surface: #1a1a1e;
    --surface-2: #1f1f24;
    --surface-3: #26262c;
    --border: #2b2b32;
    --border-strong: #3a3a43;
    --text: #ececef;
    --muted: #9c9ba4;
    --faint: #74737c;
    --accent: #7ea8ff;
    --accent-soft: #1a2440;
    --accent-fg: #0d1322;
    --good: #57cb90;
    --good-soft: #16281f;
    --warn: #dfa445;
    --warn-soft: #2a2113;
    --bad: #ef7b70;
    --bad-soft: #2c1917;
    --shadow: 0 1px 2px rgb(0 0 0 / 40%), 0 10px 30px -14px rgb(0 0 0 / 70%);
  }
}

/* The same tokens, for dark chosen in the menu. One rule cannot match both a
   media query and a selector, and the CSP allows no inline script to set the
   theme before the first paint. */
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #121215;
  --surface: #1a1a1e;
  --surface-2: #1f1f24;
  --surface-3: #26262c;
  --border: #2b2b32;
  --border-strong: #3a3a43;
  --text: #ececef;
  --muted: #9c9ba4;
  --faint: #74737c;
  --accent: #7ea8ff;
  --accent-soft: #1a2440;
  --accent-fg: #0d1322;
  --good: #57cb90;
  --good-soft: #16281f;
  --warn: #dfa445;
  --warn-soft: #2a2113;
  --bad: #ef7b70;
  --bad-soft: #2c1917;
  --shadow: 0 1px 2px rgb(0 0 0 / 40%), 0 10px 30px -14px rgb(0 0 0 / 70%);
}

* {
  box-sizing: border-box;
}

/* Components set their own display, which outranks the browser's rule for
   [hidden]. */
[hidden] {
  display: none !important;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 var(--sans);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: 600;
  letter-spacing: -0.011em;
}

code {
  font-family: var(--mono);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.spacer {
  flex: 1;
}

/* ------------------------------------------------------------------ boot */

.boot {
  display: grid;
  place-items: center;
  height: 100%;
}

.boot-mark,
.spinner {
  width: 26px;
  height: 26px;
  border: 2.5px solid var(--border-strong);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

/* ----------------------------------------------------------------- shell */

/* Exactly the viewport's height, so the thread scrolls by itself and the
   composer stays in reach. dvh follows a phone's collapsing address bar. */
.shell {
  display: grid;
  grid-template-columns: 264px minmax(0, 1fr);
  height: 100vh;
  height: 100dvh;
  transition: grid-template-columns 0.16s ease;
}
.shell.sidebar-collapsed {
  grid-template-columns: 0 minmax(0, 1fr);
}
.shell.sidebar-collapsed .sidebar {
  visibility: hidden;
  border-right-color: transparent;
}

.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 14px 10px 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 0;
  min-width: 0;
  overflow: hidden;
}

.sidebar-head {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 6px;
}

.brand {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 5px 8px;
  border-radius: var(--radius-sm);
  font-family: var(--display);
  font-weight: 620;
  letter-spacing: -0.02em;
  font-size: 16px;
  color: inherit;
  white-space: nowrap;
}
.brand:hover {
  background: var(--surface-3);
  text-decoration: none;
}
.brand-mark {
  display: block;
  border-radius: 6px;
  flex: none;
}

.new-chat {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  color: var(--text);
  font-weight: 550;
  font-size: 14px;
  white-space: nowrap;
  transition: background 0.12s;
}
.new-chat:hover {
  background: var(--surface-3);
  text-decoration: none;
}
.new-chat svg {
  width: 16px;
  height: 16px;
  flex: none;
}
.new-chat kbd {
  margin-left: auto;
  font: 11px var(--sans);
  color: var(--faint);
}

.search {
  position: relative;
  margin: 2px 0 4px;
}
.search svg {
  position: absolute;
  left: 10px;
  top: 50%;
  width: 15px;
  height: 15px;
  transform: translateY(-50%);
  color: var(--faint);
  pointer-events: none;
}
.search-input {
  width: 100%;
  padding: 7px 10px 7px 32px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  background: var(--surface-3);
  color: var(--text);
  font: inherit;
  font-size: 13.5px;
}
.search-input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--surface);
}
.search-input::placeholder {
  color: var(--faint);
}

.conv-list {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  margin: 0 -4px;
  padding: 0 4px;
}
.conv-group + .conv-group {
  margin-top: 6px;
}
.conv-group-label {
  padding: 12px 10px 5px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--faint);
}
.conv-empty {
  padding: 14px 10px;
  font-size: 13px;
  color: var(--faint);
}
.conv-hint {
  margin: 0;
  padding: 6px 10px;
  font-size: 12px;
  line-height: 1.45;
  text-align: center;
  color: var(--faint);
}

.conv-item {
  position: relative;
  display: flex;
  align-items: center;
  border-radius: var(--radius-sm);
  transition: background 0.12s;
}
.conv-item:hover,
.conv-item:focus-within {
  background: var(--surface-3);
}
.conv-item.is-current {
  background: var(--accent-soft);
}
.conv-link {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  color: var(--muted);
  font-size: 13.5px;
}
.conv-link:hover {
  text-decoration: none;
  color: var(--text);
}
.conv-item.is-current .conv-link {
  color: var(--accent);
  font-weight: 600;
}
.conv-title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.conv-live {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: blink 1.1s ease-in-out infinite;
}
/* The menu button appears on hover, so a long title is not cut short for a
   button nobody is reaching for. */
.conv-more {
  position: absolute;
  right: 3px;
  opacity: 0;
  background: var(--surface-3);
}
.conv-item.is-current .conv-more {
  background: var(--accent-soft);
}
.conv-item:hover .conv-more,
.conv-item:focus-within .conv-more,
.conv-more[aria-expanded="true"] {
  opacity: 1;
}
.conv-rename {
  width: 100%;
  margin: 2px 0;
  padding: 5px 9px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--accent);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 13.5px;
}
.conv-rename:focus {
  outline: none;
}

.sidebar-foot {
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

.account {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 7px 8px;
  border: 0;
  border-radius: var(--radius-sm);
  background: none;
  color: var(--text);
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.account:hover,
.account[aria-expanded="true"] {
  background: var(--surface-3);
}
.account > svg {
  width: 16px;
  height: 16px;
  color: var(--faint);
  flex: none;
}
.avatar {
  flex: none;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-fg);
  font: 600 12px var(--display);
  letter-spacing: 0.02em;
}
.account-id {
  flex: 1;
  min-width: 0;
  display: grid;
}
.account-name,
.account-org {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.account-name {
  font-size: 13.5px;
  font-weight: 550;
}
.account-org {
  font-size: 12px;
  color: var(--muted);
}

.main {
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.topbar {
  flex: none;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 14px;
  min-height: 56px;
}

.main-body {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

/* What only shows in one layout. The narrow layout is at the end. */
.show-narrow,
.when-collapsed,
.when-collapsed-or-narrow {
  display: none !important;
}
.sidebar-collapsed .when-collapsed,
.sidebar-collapsed .when-collapsed-or-narrow {
  display: inline-grid !important;
}
.nav-scrim {
  display: none;
}

.model-picker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  max-width: 100%;
  padding: 6px 10px;
  border: 0;
  border-radius: var(--radius-sm);
  background: none;
  color: var(--text);
  font: 600 16px var(--display);
  letter-spacing: -0.015em;
  cursor: pointer;
}
.model-picker:hover,
.model-picker[aria-expanded="true"] {
  background: var(--surface-3);
}
.model-picker svg {
  width: 16px;
  height: 16px;
  flex: none;
  color: var(--muted);
}
.model-picker-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ------------------------------------------------------------- controls */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-weight: 550;
  font-size: 13.5px;
  cursor: pointer;
  white-space: nowrap;
  transition:
    background 0.12s,
    border-color 0.12s,
    opacity 0.12s;
}
.btn:hover:not(:disabled) {
  background: var(--surface-3);
  text-decoration: none;
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.btn svg {
  width: 15px;
  height: 15px;
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-fg);
}
.btn-primary:hover:not(:disabled) {
  background: var(--accent);
  filter: brightness(1.08);
}
.btn-danger-solid {
  background: var(--bad);
  border-color: var(--bad);
  color: #fff;
}
.btn-danger-solid:hover:not(:disabled) {
  background: var(--bad);
  filter: brightness(1.08);
}
.btn-sm {
  padding: 5px 10px;
  font-size: 12.5px;
}

.icon-btn {
  display: inline-grid;
  place-items: center;
  flex: none;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 0;
  border-radius: var(--radius-sm);
  background: none;
  color: var(--muted);
  cursor: pointer;
  transition:
    background 0.12s,
    color 0.12s;
}
.icon-btn:hover:not(:disabled),
.icon-btn[aria-expanded="true"] {
  background: var(--surface-3);
  color: var(--text);
}
.icon-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.icon-btn svg {
  width: 17px;
  height: 17px;
}

.input {
  padding: 8px 11px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 14px;
  width: 100%;
  min-width: 0;
}
.input:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
  border-color: var(--accent);
}
.input::placeholder {
  color: var(--faint);
}
textarea.input {
  resize: vertical;
  line-height: 1.5;
}

.banner {
  padding: 10px 13px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 16px;
  line-height: 1.5;
}
.banner-bad {
  background: var(--bad-soft);
  color: var(--bad);
}
.banner-warn {
  background: var(--warn-soft);
  color: var(--warn);
}

/* ------------------------------------------------------------------ chat */

.chat {
  position: relative;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.column {
  width: 100%;
  max-width: calc(var(--column) + 48px);
  margin: 0 auto;
  padding: 0 24px;
}

.chat-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.thread {
  display: flex;
  flex-direction: column;
  gap: 18px;
  width: 100%;
  max-width: calc(var(--column) + 48px);
  margin: 0 auto;
  padding: 12px 24px 40px;
}
.thread-loading {
  display: grid;
  place-items: center;
  padding: 80px 0;
}
.thread-failed {
  display: grid;
  justify-items: center;
  gap: 4px;
  padding: 80px 0;
  color: var(--muted);
  text-align: center;
}

/* A new chat: the greeting and the composer meet in the middle of the
   screen, and the composer moves down once there is a conversation. */
.hero {
  display: none;
}
.chat.is-empty .chat-scroll,
.chat.is-empty .to-bottom {
  display: none;
}
.chat.is-empty .hero {
  flex: 1;
  display: flex;
  align-items: flex-end;
  padding-bottom: 28px;
}
.chat.is-empty .dock {
  flex: 1;
  align-items: flex-start;
}
.hero-inner {
  display: grid;
  justify-items: center;
  gap: 10px;
  text-align: center;
}
.hero-mark {
  display: block;
  margin-bottom: 4px;
  border-radius: 10px;
}
.hero-title {
  font: 600 30px/1.2 var(--display);
  letter-spacing: -0.025em;
}
.hero-sub {
  margin: 0;
  max-width: 520px;
  color: var(--muted);
}

.notice {
  max-width: 480px;
  margin-top: 10px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  text-align: left;
}
.notice p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 14px;
}

/* ------------------------------------------------------------- messages */

.msg {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.msg-user {
  align-items: flex-end;
}
.bubble {
  max-width: min(600px, 85%);
  padding: 10px 16px;
  border-radius: 20px;
  background: var(--accent-soft);
  overflow-wrap: anywhere;
}
.bubble-text {
  white-space: pre-wrap;
}
.bubble-images {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: flex-start;
  gap: 6px;
}
.bubble-images:not(:last-child) {
  margin-bottom: 8px;
}
.bubble-images img {
  display: block;
  max-width: min(260px, 100%);
  max-height: 200px;
  border-radius: 12px;
}
.image-open {
  max-width: 100%;
  padding: 0;
  border: 0;
  border-radius: 12px;
  background: none;
  cursor: zoom-in;
}

.msg-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  min-height: 32px;
  margin-top: 4px;
  opacity: 0;
  transition: opacity 0.12s;
}
.msg:hover .msg-actions,
.msg-actions:focus-within,
.msg-actions.is-last {
  opacity: 1;
}
.msg-actions .icon-btn {
  width: 30px;
  height: 30px;
}
.msg-actions .icon-btn svg {
  width: 15px;
  height: 15px;
}
.msg-model {
  margin-left: 8px;
  font-size: 12px;
  color: var(--faint);
}
.msg-note {
  margin-top: 6px;
  font-size: 13px;
  color: var(--faint);
}

.msg-body {
  min-width: 0;
}

.typing {
  display: flex;
  gap: 5px;
  padding: 10px 0;
}
.typing span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--faint);
  animation: bounce 1.2s infinite ease-in-out;
}
.typing span:nth-child(2) {
  animation-delay: 0.15s;
}
.typing span:nth-child(3) {
  animation-delay: 0.3s;
}
@keyframes bounce {
  0%,
  60%,
  100% {
    transform: translateY(0);
    opacity: 0.5;
  }
  30% {
    transform: translateY(-5px);
    opacity: 1;
  }
}
@keyframes blink {
  50% {
    opacity: 0.25;
  }
}

.thinking {
  padding: 6px 0;
  font-size: 14px;
  font-weight: 550;
}
.msg-actions .icon-btn[aria-expanded="true"] {
  color: var(--text);
}
.reasoning {
  margin-top: 6px;
  border-left: 2px solid var(--border-strong);
  padding-left: 14px;
  font-size: 14px;
}
.reasoning-head {
  color: var(--muted);
  font-weight: 550;
}
.reasoning-body {
  margin-top: 8px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  color: var(--muted);
  max-height: 360px;
  overflow-y: auto;
}
.shimmer {
  background: linear-gradient(90deg, var(--muted) 30%, var(--text) 50%, var(--muted) 70%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: shimmer 1.6s linear infinite;
}
@keyframes shimmer {
  from {
    background-position: 100% 0;
  }
  to {
    background-position: -100% 0;
  }
}

.reply-error {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 4px;
  padding: 10px 13px;
  border-radius: var(--radius-sm);
  background: var(--bad-soft);
  color: var(--bad);
  font-size: 14px;
}
.reply-error > div {
  flex: 1;
  min-width: 200px;
}

/* Editing one of the person's messages. */
.msg-editing {
  align-items: stretch;
}
.edit-box {
  padding: 10px 12px;
  border: 1px solid var(--accent);
  border-radius: 16px;
  background: var(--surface);
}
.edit-input {
  width: 100%;
  border: 0;
  background: none;
  color: var(--text);
  font: inherit;
  line-height: 1.55;
  resize: none;
}
.edit-input:focus {
  outline: none;
}
.edit-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
}
.edit-hint {
  font-size: 12px;
  color: var(--faint);
}

/* ------------------------------------------------------------- markdown */

.md {
  line-height: 1.65;
  overflow-wrap: anywhere;
}
.md > :first-child {
  margin-top: 0;
}
.md > :last-child {
  margin-bottom: 0;
}
.md p {
  margin: 0 0 0.85em;
}
.md-h {
  margin: 1.3em 0 0.5em;
  font-family: var(--display);
  letter-spacing: -0.015em;
  line-height: 1.3;
}
h2.md-h {
  font-size: 1.35em;
}
h3.md-h {
  font-size: 1.15em;
}
h4.md-h,
h5.md-h,
h6.md-h {
  font-size: 1em;
}
.md ul,
.md ol {
  margin: 0 0 0.85em;
  padding-left: 1.6em;
}
.md li {
  margin: 0.25em 0;
}
.md li > p {
  margin: 0 0 0.5em;
}
.md blockquote > :last-child,
.md li > :last-child {
  margin-bottom: 0;
}
.md li > ul,
.md li > ol {
  margin: 0.25em 0;
}
.md li::marker {
  color: var(--muted);
}
.md blockquote {
  margin: 0 0 0.85em;
  padding: 2px 0 2px 14px;
  border-left: 3px solid var(--border-strong);
  color: var(--muted);
}
.md hr {
  margin: 1.4em 0;
  border: 0;
  border-top: 1px solid var(--border);
}
.md a {
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--accent) 40%, transparent);
  text-underline-offset: 2px;
}
.md code {
  padding: 0.12em 0.38em;
  border-radius: 5px;
  background: var(--surface-3);
  font-size: 0.88em;
}
.md-table {
  margin: 0 0 0.85em;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.md table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.md th,
.md td {
  padding: 7px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}
.md th {
  background: var(--surface-2);
  font-weight: 600;
}
.md tr:last-child td {
  border-bottom: 0;
}

.codeblock {
  margin: 0 0 0.85em;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
  overflow: hidden;
}
.codeblock-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 6px 4px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-3);
  font: 12px var(--mono);
  color: var(--muted);
}
.codeblock-copy {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 7px;
  border: 0;
  border-radius: 5px;
  background: none;
  color: var(--muted);
  font: 12px var(--sans);
  cursor: pointer;
}
.codeblock-copy:hover {
  background: var(--surface);
  color: var(--text);
}
.codeblock-copy svg {
  width: 13px;
  height: 13px;
}
.codeblock pre {
  margin: 0;
  padding: 12px 14px;
  overflow-x: auto;
  tab-size: 4;
}
.md .codeblock code {
  padding: 0;
  background: none;
  font-size: 13px;
  line-height: 1.6;
}

/* The cursor at the end of a reply that is still arriving. */
.md.is-streaming > :last-child::after {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-left: 4px;
  border-radius: 50%;
  background: var(--accent);
  vertical-align: middle;
  animation: blink 1s ease-in-out infinite;
}
.md.is-streaming > .codeblock:last-child::after,
.md.is-streaming > .md-table:last-child::after {
  display: none;
}

/* ------------------------------------------------------------- composer */

.dock {
  flex: none;
  display: flex;
  padding: 0 0 14px;
}
.dock > .column {
  display: grid;
  gap: 8px;
}

.composer {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 10px 8px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: var(--shadow);
  cursor: text;
  transition: border-color 0.12s;
}
.composer:focus-within {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border-strong));
}
.chat.dropping .composer {
  border-color: var(--accent);
  border-style: dashed;
  background: var(--accent-soft);
}
.composer-input {
  width: 100%;
  min-height: 28px;
  max-height: 320px;
  padding: 4px 4px 2px 0;
  border: 0;
  background: none;
  color: var(--text);
  font: inherit;
  line-height: 1.55;
  resize: none;
  overflow-y: auto;
}
.composer-input:focus {
  outline: none;
}
.composer-input::placeholder {
  color: var(--faint);
}
.composer-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: -6px;
}
.composer-attach {
  border-radius: 50%;
}
.composer-send {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-fg);
  cursor: pointer;
  transition:
    opacity 0.12s,
    filter 0.12s;
}
.composer-send:hover:not(:disabled) {
  filter: brightness(1.08);
}
.composer-send:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}
.composer-send svg {
  width: 17px;
  height: 17px;
  stroke-width: 2.2;
}
.composer-stop {
  background: var(--text);
  color: var(--surface);
}
.composer-stop svg {
  fill: currentColor;
  width: 13px;
  height: 13px;
}
.composer-note {
  text-align: center;
  font-size: 12px;
  color: var(--faint);
}
.composer-tray {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 2px 0 6px;
}
.thumb {
  position: relative;
  width: 60px;
  height: 60px;
}
.thumb .image-open {
  width: 100%;
  height: 100%;
  border-radius: 10px;
}
.thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: 1px solid var(--border);
  border-radius: 10px;
}
.thumb-remove {
  position: absolute;
  top: -6px;
  right: -6px;
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
}
.thumb-remove svg {
  width: 12px;
  height: 12px;
}

.to-bottom {
  position: absolute;
  left: 50%;
  bottom: 120px;
  z-index: 5;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  background: var(--surface);
  color: var(--muted);
  box-shadow: var(--shadow);
  transform: translateX(-50%);
  cursor: pointer;
}
.to-bottom:hover {
  color: var(--text);
}
.to-bottom svg {
  width: 16px;
  height: 16px;
}

/* ------------------------------------------------------------------ menu */

.menu {
  position: fixed;
  z-index: 150;
  min-width: 220px;
  max-width: min(340px, calc(100vw - 16px));
  max-height: calc(100vh - 16px);
  overflow-y: auto;
  padding: 5px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  animation: rise 0.1s ease-out;
}
.menu-wide {
  width: 300px;
}
.menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 7px 9px;
  border: 0;
  border-radius: var(--radius-sm);
  background: none;
  color: var(--text);
  font: inherit;
  font-size: 14px;
  text-align: left;
  cursor: pointer;
}
.menu-item:hover,
.menu-item:focus-visible {
  background: var(--surface-3);
  outline: none;
  text-decoration: none;
}
.menu-item > svg {
  flex: none;
  width: 16px;
  height: 16px;
  color: var(--muted);
}
.menu-icon-space {
  flex: none;
  width: 16px;
}
.menu-label {
  flex: 1;
  min-width: 0;
  display: grid;
}
.menu-hint {
  font-size: 12px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.menu-check svg {
  display: block;
  width: 16px;
  height: 16px;
  color: var(--accent);
}
.menu-danger,
.menu-danger > svg {
  color: var(--bad);
}
.menu-sep {
  height: 1px;
  margin: 5px 4px;
  background: var(--border);
}
.menu-heading {
  padding: 8px 9px 4px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--faint);
}
.menu-who {
  display: grid;
  padding: 7px 9px;
  font-size: 14px;
}
.menu-who span {
  font-size: 12.5px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
}
.menu-budget {
  display: grid;
  gap: 6px;
  margin: 4px;
  padding: 10px;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-size: 12.5px;
}
.menu-budget-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
}
.menu-budget-num {
  color: var(--text);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.menu-budget-reset {
  font-size: 11.5px;
  color: var(--faint);
}
.meter {
  height: 6px;
  border-radius: 3px;
  background: var(--surface-3);
  overflow: hidden;
}
.meter-fill {
  height: 100%;
  border-radius: 3px;
  background: var(--accent);
}
.meter.is-high .meter-fill {
  background: var(--bad);
}

/* ----------------------------------------------------------------- modal */

.overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgb(10 10 12 / 45%);
  animation: fade 0.12s ease-out;
}
@keyframes fade {
  from {
    opacity: 0;
  }
}
.modal {
  width: min(520px, 100%);
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.modal-head {
  padding: 16px 18px 12px;
  border-bottom: 1px solid var(--border);
}
.modal-head h2 {
  font: 600 16px var(--display);
}
.modal-body {
  padding: 18px;
  overflow-y: auto;
}
.modal-body > :last-child {
  margin-bottom: 0;
}
.modal-text {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 14px;
}
.modal-foot {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 13px 18px;
  border-top: 1px solid var(--border);
  border-radius: 0 0 12px 12px;
  background: var(--surface-2);
}

.viewer {
  background: rgb(10 10 12 / 85%);
  cursor: zoom-out;
}
.viewer img {
  max-width: 100%;
  max-height: calc(100dvh - 40px);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.viewer-close {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgb(10 10 12 / 55%);
  color: #ececef;
}
.viewer-close:hover {
  background: rgb(10 10 12 / 80%);
  color: #ffffff;
}

/* ---------------------------------------------------------------- toasts */

.toasts {
  position: fixed;
  bottom: 18px;
  right: 18px;
  z-index: 200;
  display: grid;
  gap: 8px;
  max-width: 380px;
}
.toast {
  padding: 10px 13px;
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  background: var(--surface);
  box-shadow: var(--shadow);
  font-size: 13.5px;
  animation: rise 0.15s ease-out;
}
.toast.bad {
  border-left-color: var(--bad);
}
.toast.good {
  border-left-color: var(--good);
}
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
}

/* --------------------------------------------------------------- sign in */

.signin {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.signin-card {
  width: min(400px, 100%);
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.signin-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 26px;
  font: 620 17px var(--display);
  letter-spacing: -0.02em;
}
.signin-title {
  font: 600 24px var(--display);
  letter-spacing: -0.02em;
}
.signin-lead {
  margin: 6px 0 22px;
  color: var(--muted);
}
.signin-providers {
  display: grid;
  gap: 10px;
}
.btn-signin {
  width: 100%;
  padding: 10px 14px;
  font-size: 14px;
}
.btn-signin svg {
  width: 17px;
  height: 17px;
  color: var(--muted);
}
.signin-note {
  margin: 22px 0 0;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--muted);
}

/* ------------------------------------------------------------ responsive */

@media (max-width: 768px) {
  .shell,
  .shell.sidebar-collapsed {
    grid-template-columns: minmax(0, 1fr);
  }
  /* The sidebar becomes a drawer, parked off the left edge until the menu
     button brings it in. */
  .sidebar,
  .shell.sidebar-collapsed .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 60;
    width: min(300px, 86vw);
    height: 100%;
    box-shadow: var(--shadow);
    transform: translateX(-101%);
    /* Hidden as well as moved, so the keyboard cannot tab into it. */
    visibility: hidden;
    transition:
      transform 0.18s ease,
      visibility 0.18s;
  }
  .nav-open .sidebar {
    transform: none;
    visibility: visible;
  }
  .nav-scrim {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 50;
    background: rgb(23 23 26 / 42%);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s ease;
  }
  .nav-open .nav-scrim {
    opacity: 1;
    pointer-events: auto;
  }
  .show-narrow,
  .when-collapsed-or-narrow {
    display: inline-grid !important;
  }
  .hide-narrow,
  .sidebar-collapsed .when-collapsed {
    display: none !important;
  }
  .topbar {
    padding: 8px 8px;
    min-height: 52px;
  }
  /* The new-chat button goes to the far right, as in phone chat apps. */
  .topbar .when-collapsed-or-narrow {
    order: 3;
  }
  .column,
  .thread {
    padding-left: 14px;
    padding-right: 14px;
  }
  .dock {
    padding-bottom: 10px;
  }
  .hero-title {
    font-size: 24px;
  }
  .bubble {
    max-width: 92%;
  }
  /* No hover on a touch screen, so the actions stay in view. */
  .msg-actions {
    opacity: 1;
  }
  /* In the row rather than over the title, which it would hide. */
  .conv-more {
    position: static;
    opacity: 1;
    background: none;
  }
  .toasts {
    left: 12px;
    right: 12px;
    max-width: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .typing span,
  .conv-live,
  .md.is-streaming > :last-child::after,
  .shimmer {
    animation: none;
  }
  .shimmer {
    color: var(--muted);
  }
}