/* Inference APIs — design system
   Light and dark themes via [data-theme] on <html>. */

:root {
  --bg: #ffffff;
  --bg-subtle: #f7f7f8;
  --bg-muted: #efeff1;
  --panel: #ffffff;
  --border: #e6e6e9;
  --border-strong: #d4d4d8;
  --text: #0e0e10;
  --text-2: #55555e;
  --text-3: #8b8b94;
  --accent: #1f6feb;
  --accent-hover: #1a5fd0;
  --accent-soft: #e8f0fe;
  --accent-text: #1a5fd0;
  --on-accent: #ffffff;
  --success: #16794a;
  --success-soft: #e6f5ec;
  --warning: #9a5b00;
  --warning-soft: #fdf3e1;
  --danger: #c4302b;
  --danger-soft: #fdecec;
  --code-bg: #0f1115;
  --code-border: #1f232b;
  --code-text: #e6e6e6;
  --shadow: 0 1px 2px rgba(16, 16, 20, .04), 0 1px 3px rgba(16, 16, 20, .06);
  --shadow-lg: 0 10px 30px rgba(16, 16, 20, .12);
  --radius: 10px;
  --radius-sm: 7px;
  --sidebar-w: 248px;
  --font: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #0a0a0b;
  --bg-subtle: #111113;
  --bg-muted: #1a1a1d;
  --panel: #111113;
  --border: #232327;
  --border-strong: #303036;
  --text: #ededef;
  --text-2: #a3a3ab;
  --text-3: #6f6f78;
  --accent: #3b82f6;
  --accent-hover: #5b96f8;
  --accent-soft: rgba(59, 130, 246, .14);
  --accent-text: #7aaaf9;
  --on-accent: #ffffff;
  --success: #4ade80;
  --success-soft: rgba(74, 222, 128, .12);
  --warning: #fbbf24;
  --warning-soft: rgba(251, 191, 36, .12);
  --danger: #f87171;
  --danger-soft: rgba(248, 113, 113, .12);
  --code-bg: #0d0d0f;
  --code-border: #232327;
  --shadow: 0 0 0 1px rgba(255, 255, 255, .02);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, .6);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
[hidden] { display: none !important; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -0.01em; color: var(--text); }
p { margin: 0; }
code, pre, .mono { font-family: var(--mono); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

.icon { width: 18px; height: 18px; flex-shrink: 0; }
.icon-sm { width: 15px; height: 15px; flex-shrink: 0; }

/* ---------- Shell ---------- */
.sidebar {
  position: fixed; inset: 0 auto 0 0; width: var(--sidebar-w); z-index: 40;
  display: flex; flex-direction: column;
  background: var(--bg-subtle); border-right: 1px solid var(--border);
}
.sidebar-head { display: flex; align-items: center; justify-content: space-between; padding: 16px 16px 12px; }
.brand { display: inline-flex; align-items: center; gap: 9px; font-weight: 600; font-size: 15px; letter-spacing: -0.01em; }
.brand-logo { width: 24px; height: 24px; }
[data-theme="dark"] .brand-logo { filter: brightness(1.25); }
.sidebar .sidebar-x { display: none; }

.workspace {
  display: flex; align-items: center; gap: 9px; margin: 0 12px 8px; padding: 8px 10px;
  border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--panel);
}
.workspace-name { font-size: 13px; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.sidebar-nav { flex: 1; overflow-y: auto; padding: 4px 12px 12px; display: flex; flex-direction: column; gap: 1px; }
.nav-group { margin: 16px 10px 6px; font-size: 11.5px; font-weight: 500; color: var(--text-3); }
.nav-link {
  display: flex; align-items: center; gap: 10px; padding: 7px 10px; border-radius: var(--radius-sm);
  color: var(--text-2); font-weight: 500; font-size: 13.5px;
}
.nav-link:hover { background: var(--bg-muted); color: var(--text); }
.nav-link.is-active { background: var(--bg-muted); color: var(--text); }
.nav-link .icon { width: 17px; height: 17px; opacity: .9; }

.sidebar-foot { border-top: 1px solid var(--border); padding: 12px; display: flex; flex-direction: column; gap: 8px; }
.sidebar-foot-row { display: flex; justify-content: space-between; gap: 4px; }
.balance-chip {
  display: flex; align-items: center; justify-content: space-between; padding: 9px 12px;
  border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--panel);
}
.balance-chip:hover { border-color: var(--border-strong); }
.balance-label { color: var(--text-2); font-size: 12.5px; }
.balance-value { font-weight: 600; font-variant-numeric: tabular-nums; }

.icon-sun { display: none; }
[data-theme="dark"] .icon-sun { display: block; }
[data-theme="dark"] .icon-moon { display: none; }

.app-main { margin-left: var(--sidebar-w); min-height: 100vh; display: flex; flex-direction: column; }
.page { width: 100%; max-width: 1120px; margin: 0 auto; padding: 36px 40px 56px; flex: 1; }
.page-narrow { max-width: 860px; }
.page-wide { max-width: 1400px; }

.app-footer {
  display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; align-items: center;
  padding: 20px 40px; border-top: 1px solid var(--border); color: var(--text-3); font-size: 12.5px;
}
.app-footer nav { display: flex; flex-wrap: wrap; gap: 18px; }
.app-footer a:hover { color: var(--text); }

.mobile-bar { display: none; }
.sidebar-scrim { display: none; }

@media (max-width: 900px) {
  .mobile-bar {
    display: flex; align-items: center; justify-content: space-between; gap: 8px;
    position: sticky; top: 0; z-index: 30; height: 56px; padding: 0 12px;
    background: var(--bg); border-bottom: 1px solid var(--border);
  }
  .mobile-bar > span { width: 36px; }
  .sidebar { transform: translateX(-100%); transition: transform .2s ease; box-shadow: var(--shadow-lg); }
  body.sidebar-open .sidebar { transform: none; }
  body.sidebar-open .sidebar-scrim { display: block; position: fixed; inset: 0; z-index: 35; background: rgba(0,0,0,.4); }
  .sidebar .sidebar-x { display: inline-flex; }
  .app-main { margin-left: 0; }
  .page { padding: 24px 16px 40px; }
  .app-footer { padding: 18px 16px; }
}

/* ---------- Bare (auth) layout ---------- */
.is-bare { background: var(--bg-subtle); }
.bare-top { display: flex; align-items: center; justify-content: space-between; padding: 18px 24px; }
.bare-main { min-height: calc(100vh - 72px); display: flex; align-items: flex-start; justify-content: center; padding: 6vh 16px 48px; }
.auth-card { width: 100%; max-width: 400px; }
.auth-card .card { padding: 28px; }
.auth-title { font-size: 24px; text-align: center; margin-bottom: 6px; }
.auth-sub { text-align: center; color: var(--text-2); margin-bottom: 24px; }
.divider { display: flex; align-items: center; gap: 12px; color: var(--text-3); font-size: 12.5px; margin: 20px 0; }
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--border); }

/* ---------- Page header ---------- */
.page-header { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 28px; }
.page-title { font-size: 26px; letter-spacing: -0.02em; }
.page-sub { margin-top: 6px; color: var(--text-2); max-width: 680px; }
.eyebrow { font-size: 12.5px; color: var(--text-3); margin-bottom: 8px; display: flex; gap: 6px; align-items: center; }
.eyebrow a:hover { color: var(--text); }
.section { margin-top: 36px; }
.section-title { font-size: 16px; margin-bottom: 14px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }

/* ---------- Cards ---------- */
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.card-pad { padding: 20px; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 20px; border-bottom: 1px solid var(--border); }
.card-head h2, .card-head h3 { font-size: 14.5px; }
.card-body { padding: 20px; }
.card-foot { display: flex; align-items: center; justify-content: flex-end; gap: 10px; padding: 12px 20px; border-top: 1px solid var(--border); background: var(--bg-subtle); border-radius: 0 0 var(--radius) var(--radius); }
a.card:hover, .card-link:hover { border-color: var(--border-strong); }

.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 1100px) { .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 700px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: minmax(0, 1fr); } }

.stat-label { font-size: 12.5px; color: var(--text-2); }
.stat-value { font-size: 30px; font-weight: 600; letter-spacing: -0.02em; margin-top: 6px; font-variant-numeric: tabular-nums; }
.muted { color: var(--text-2); }
.subtle { color: var(--text-3); }
.small { font-size: 12.5px; }
.stack-1 > * + * { margin-top: 4px; }
.stack-2 > * + * { margin-top: 8px; }
.stack-3 > * + * { margin-top: 12px; }
.stack-4 > * + * { margin-top: 16px; }
.row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.link { color: var(--accent-text); }
.link:hover { text-decoration: underline; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  height: 36px; padding: 0 14px; border-radius: var(--radius-sm); border: 1px solid transparent;
  font: inherit; font-size: 13.5px; font-weight: 500; white-space: nowrap; cursor: pointer;
  transition: background .12s, border-color .12s, color .12s;
}
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn .icon { width: 16px; height: 16px; }
.btn-primary { background: var(--text); color: var(--bg); }
.btn-primary:hover:not(:disabled) { opacity: .88; }
.btn-accent { background: var(--accent); color: var(--on-accent); }
.btn-accent:hover:not(:disabled) { background: var(--accent-hover); }
.btn-secondary { background: var(--panel); color: var(--text); border-color: var(--border-strong); }
.btn-secondary:hover:not(:disabled) { background: var(--bg-muted); }
.btn-ghost { background: transparent; color: var(--text-2); }
.btn-ghost:hover:not(:disabled) { background: var(--bg-muted); color: var(--text); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover:not(:disabled) { opacity: .9; }
.btn-danger-ghost { background: transparent; color: var(--danger); }
.btn-danger-ghost:hover { background: var(--danger-soft); }
.btn-sm { height: 30px; padding: 0 10px; font-size: 12.5px; }
.btn-lg { height: 42px; padding: 0 18px; font-size: 14.5px; }
.btn-icon { width: 36px; padding: 0; }
.btn-sm.btn-icon { width: 30px; }
.btn-block { width: 100%; }

/* ---------- Badges / chips ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 5px; height: 22px; padding: 0 8px;
  border-radius: 999px; font-size: 11.5px; font-weight: 500; white-space: nowrap;
  background: var(--bg-muted); color: var(--text-2); border: 1px solid var(--border);
}
.badge-accent { background: var(--accent-soft); color: var(--accent-text); border-color: transparent; }
.badge-success { background: var(--success-soft); color: var(--success); border-color: transparent; }
.badge-warning { background: var(--warning-soft); color: var(--warning); border-color: transparent; }
.badge-danger { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.chip { display: inline-flex; align-items: center; height: 26px; padding: 0 10px; border-radius: 6px; font-size: 12.5px; background: var(--bg-muted); color: var(--text-2); }

/* ---------- Forms ---------- */
.field { display: flex; flex-direction: column; gap: 6px; }
.label { font-size: 13px; font-weight: 500; color: var(--text); }
.hint { font-size: 12.5px; color: var(--text-3); }
.input, .select, .textarea {
  width: 100%; height: 38px; padding: 0 12px; border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong); background: var(--bg); color: var(--text);
  font: inherit; font-size: 14px;
}
.textarea { height: auto; padding: 10px 12px; resize: vertical; line-height: 1.5; }
.input::placeholder, .textarea::placeholder { color: var(--text-3); }
.input:focus, .select:focus, .textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.input[readonly] { background: var(--bg-subtle); color: var(--text-2); }
.select { appearance: none; padding-right: 32px; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238b8b94' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 11px center; }
input[type="range"] { width: 100%; accent-color: var(--accent); }
input[type="checkbox"] { accent-color: var(--accent); width: 15px; height: 15px; }

.alert { display: flex; gap: 10px; padding: 12px 14px; border-radius: var(--radius-sm); font-size: 13.5px; border: 1px solid transparent; }
.alert-info { background: var(--accent-soft); color: var(--accent-text); }
.alert-warning { background: var(--warning-soft); color: var(--warning); }
.alert-danger { background: var(--danger-soft); color: var(--danger); }
.alert-success { background: var(--success-soft); color: var(--success); }
.alert a { text-decoration: underline; font-weight: 500; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.table th { text-align: left; font-weight: 500; font-size: 12.5px; color: var(--text-3); padding: 10px 20px; border-bottom: 1px solid var(--border); white-space: nowrap; }
.table td { padding: 13px 20px; border-bottom: 1px solid var(--border); vertical-align: top; }
.table tr:last-child td { border-bottom: 0; }
.table code { font-size: 12.5px; }

/* ---------- Code ---------- */
.inline-code, .prose code:not(pre code) {
  font-family: var(--mono); font-size: .88em; padding: 1px 6px; border-radius: 5px;
  background: var(--bg-muted); border: 1px solid var(--border);
}
.code {
  background: var(--code-bg); border: 1px solid var(--code-border); border-radius: var(--radius);
  overflow: hidden; color: var(--code-text);
}
.code-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 0 8px 0 4px; border-bottom: 1px solid var(--code-border); min-height: 42px; }
.code-tabs { display: flex; overflow-x: auto; }
.code-tab { background: none; border: 0; border-bottom: 2px solid transparent; color: #8b8b94; font: inherit; font-size: 12.5px; font-weight: 500; padding: 11px 12px 9px; cursor: pointer; white-space: nowrap; }
.code-tab:hover { color: #e6e6e6; }
.code-tab.is-active { color: #fff; border-bottom-color: var(--accent); }
.code-title { color: #8b8b94; font-size: 12.5px; padding: 0 8px; }
.code-copy { background: rgba(255,255,255,.06); color: #cfcfd4; border: 1px solid rgba(255,255,255,.08); height: 28px; padding: 0 10px; border-radius: 6px; font: inherit; font-size: 12px; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; }
.code-copy:hover { background: rgba(255,255,255,.12); color: #fff; }
.code pre { margin: 0; padding: 16px 18px; overflow-x: auto; font-size: 13px; line-height: 1.65; background: transparent !important; }
.code pre code { font-family: var(--mono); background: none !important; text-shadow: none !important; font-size: 13px; }
.code-line { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 6px 6px 6px 16px; }
.code-line pre { padding: 6px 0; }

/* Prism token colors (always on dark code bg) */
.token.comment, .token.prolog { color: #6b7280; }
.token.string, .token.attr-value { color: #a5d6a7; }
.token.number, .token.boolean { color: #f9c56a; }
.token.keyword, .token.builtin { color: #c792ea; }
.token.function { color: #82aaff; }
.token.operator, .token.punctuation { color: #9aa0aa; }
.token.property, .token.variable { color: #89ddff; }

/* ---------- Model cards ---------- */
.model-card { display: flex; flex-direction: column; padding: 20px; min-height: 100%; }
.model-card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.model-name { font-size: 16px; font-weight: 600; }
.model-meta { margin-top: 4px; font-size: 12.5px; color: var(--text-3); }
.model-desc { margin-top: 12px; color: var(--text-2); flex: 1; }
.model-caps { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.model-actions { display: flex; gap: 8px; margin-top: 18px; flex-wrap: wrap; }
.spec-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); border-top: 1px solid var(--border); }
.spec { padding: 14px 20px; border-right: 1px solid var(--border); }
.spec:last-child { border-right: 0; }
.spec-label { font-size: 12px; color: var(--text-3); }
.spec-value { margin-top: 3px; font-weight: 600; font-variant-numeric: tabular-nums; }

.list-row { display: flex; align-items: center; gap: 14px; padding: 14px 20px; border-bottom: 1px solid var(--border); }
.list-row:last-child { border-bottom: 0; }
a.list-row:hover { background: var(--bg-subtle); }
.list-row-main { flex: 1; min-width: 0; }
.list-icon { width: 36px; height: 36px; border-radius: 8px; display: flex; align-items: center; justify-content: center; background: var(--bg-muted); color: var(--text-2); flex-shrink: 0; }

.avatar { display: inline-flex; align-items: center; justify-content: center; border-radius: 50%; background: var(--accent); color: #fff; font-weight: 600; flex-shrink: 0; }
.avatar-sm { width: 22px; height: 22px; font-size: 11px; }
.avatar-lg { width: 44px; height: 44px; font-size: 17px; }

.steps { counter-reset: step; }
.step { position: relative; padding-left: 40px; }
.step + .step { margin-top: 22px; }
.step::before {
  counter-increment: step; content: counter(step); position: absolute; left: 0; top: 0;
  width: 26px; height: 26px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 12.5px; font-weight: 600; background: var(--bg-muted); border: 1px solid var(--border); color: var(--text-2);
}
.step-title { font-weight: 600; margin-bottom: 8px; line-height: 26px; }

/* ---------- Tabs (in-page) ---------- */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 24px; overflow-x: auto; }
.tab { padding: 9px 12px; color: var(--text-2); font-weight: 500; border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap; }
.tab:hover { color: var(--text); }
.tab.is-active { color: var(--text); border-bottom-color: var(--text); }

/* ---------- Dialog / toast ---------- */
.dialog-scrim { position: fixed; inset: 0; z-index: 60; background: rgba(0,0,0,.5); display: flex; align-items: center; justify-content: center; padding: 16px; }
.dialog { width: 100%; max-width: 440px; background: var(--panel); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow-lg); padding: 22px; }
.dialog h3 { font-size: 16px; }
.dialog p { margin-top: 8px; color: var(--text-2); }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 22px; }
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 70;
  background: var(--text); color: var(--bg); padding: 9px 16px; border-radius: 8px; font-size: 13px; box-shadow: var(--shadow-lg);
}

/* ---------- Prose (docs, legal) ---------- */
.prose { color: var(--text-2); line-height: 1.7; max-width: 760px; }
.prose h2 { color: var(--text); font-size: 19px; margin: 36px 0 12px; }
.prose h3 { color: var(--text); font-size: 15px; margin: 24px 0 8px; }
.prose p, .prose ul, .prose ol { margin: 0 0 14px; }
.prose ul, .prose ol { padding-left: 20px; }
.prose li + li { margin-top: 4px; }
.prose a { color: var(--accent-text); }
.prose a:hover { text-decoration: underline; }
.prose strong { color: var(--text); font-weight: 600; }

/* Docs layout with on-page TOC */
.docs-layout { display: grid; grid-template-columns: minmax(0, 1fr) 200px; gap: 48px; }
.toc { position: sticky; top: 28px; align-self: start; font-size: 13px; }
.toc-title { font-size: 12px; color: var(--text-3); margin-bottom: 10px; }
.toc a { display: block; padding: 4px 0; color: var(--text-2); }
.toc a:hover { color: var(--text); }
@media (max-width: 1100px) { .docs-layout { grid-template-columns: minmax(0, 1fr); } .toc { display: none; } }

/* ---------- Playground ---------- */
.pg { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 20px; align-items: start; }
@media (max-width: 1000px) { .pg { grid-template-columns: minmax(0, 1fr); } }
.chat-box { display: flex; flex-direction: column; height: calc(100vh - 230px); min-height: 460px; }
.chat-log { flex: 1; overflow-y: auto; padding: 20px; display: flex; flex-direction: column; gap: 18px; }
.chat-empty { margin: auto; text-align: center; color: var(--text-3); max-width: 340px; }
.msg { display: flex; flex-direction: column; gap: 4px; max-width: 85%; }
.msg-role { font-size: 12px; color: var(--text-3); font-weight: 500; }
.msg-body { white-space: pre-wrap; word-wrap: break-word; line-height: 1.6; }
.msg-user { align-self: flex-end; }
.msg-user .msg-role { text-align: right; }
.msg-user .msg-body { background: var(--bg-muted); padding: 10px 14px; border-radius: 12px; }
.msg-error .msg-body { color: var(--danger); }
.chat-input { border-top: 1px solid var(--border); padding: 12px; display: flex; gap: 8px; align-items: flex-end; }
.chat-input .textarea { min-height: 42px; max-height: 200px; resize: none; }
.param + .param { margin-top: 16px; }
.param-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; font-size: 13px; }
.param-val { width: 64px; height: 26px; text-align: right; padding: 0 6px; font-size: 12.5px; }
.dropzone {
  display: block; border: 1.5px dashed var(--border-strong); border-radius: var(--radius); padding: 40px 20px; text-align: center;
  color: var(--text-2); cursor: pointer; background: var(--bg-subtle); transition: border-color .12s, background .12s;
}
.dropzone:hover, .dropzone.is-over { border-color: var(--accent); background: var(--accent-soft); }
.spinner { width: 16px; height: 16px; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Landing hero ---------- */
.hero { padding: 24px 0 8px; }
.hero h1 { font-size: 40px; letter-spacing: -0.03em; line-height: 1.12; max-width: 720px; }
.hero p { margin-top: 14px; font-size: 16px; color: var(--text-2); max-width: 620px; }
.hero .row { margin-top: 24px; }
@media (max-width: 700px) { .hero h1 { font-size: 30px; } }
.feature-icon { width: 34px; height: 34px; border-radius: 8px; display: flex; align-items: center; justify-content: center; background: var(--accent-soft); color: var(--accent-text); margin-bottom: 12px; }

/* ---------- Sign-in modal & guest prompts ---------- */
.auth-dialog { position: relative; max-width: 400px; padding: 28px; max-height: calc(100vh - 32px); overflow-y: auto; }
.auth-close { position: absolute; top: 12px; right: 12px; }
.auth-head { text-align: center; margin-bottom: 20px; }
.auth-logo { width: 34px; height: 34px; margin-bottom: 10px; }
.auth-dialog h3 { font-size: 19px; letter-spacing: -0.01em; }
.dialog .auth-sub-line { margin-top: 4px; font-size: 13px; color: var(--text-3); }
.auth-legal { text-align: center; margin-top: 14px; }
.segmented { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; padding: 3px; margin-bottom: 16px; background: var(--bg-muted); border-radius: var(--radius-sm); }
.segmented button { height: 30px; border: 0; border-radius: 5px; background: transparent; color: var(--text-2); font: inherit; font-size: 13px; font-weight: 500; cursor: pointer; }
.segmented button.is-active { background: var(--panel); color: var(--text); box-shadow: var(--shadow); }
[data-theme="dark"] .segmented button.is-active { background: var(--border-strong); }
.auth-dialog .alert { margin: 0; }

.nav-lock { margin-left: auto; opacity: .45; }

.guest-banner {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 16px; padding: 14px 16px;
  border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); box-shadow: var(--shadow);
}
.guest-banner-icon { width: 36px; height: 36px; border-radius: 8px; display: flex; align-items: center; justify-content: center; background: var(--accent-soft); color: var(--accent-text); flex-shrink: 0; }
.guest-banner-text { flex: 1; min-width: 200px; }
.guest-banner-title { font-weight: 600; }
