/* PromptCompass — design system (Phase 2)
   Neutral palette, clean typography, no decoration for its own sake. */

:root {
  --bg: #f7f7f8;
  --surface: #ffffff;
  --text: #17181c;
  --muted: #68707c;
  --border: #e4e6ea;
  --border-strong: #d3d6db;
  --primary: #17181c;
  --primary-hover: #000000;
  --focus: #2563eb;
  --error: #b91c1c;
  --radius: 12px;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Header ---------- */

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
}

.brand-icon { color: var(--text); flex: none; }

.brand-name {
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.02em;
}

.badge {
  font-size: 11.5px;
  font-weight: 500;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px 9px;
  white-space: nowrap;
}

.tagline {
  margin: 0;
  font-size: 13.5px;
  color: var(--muted);
}

/* ---------- Layout ---------- */

.layout {
  max-width: 1120px;
  margin: 0 auto;
  padding: 32px 24px 48px;
  display: grid;
  grid-template-columns: 410px 1fr;
  gap: 28px;
  align-items: start;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.card-title {
  margin: 0 0 4px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.card-subtitle {
  margin: 0 0 20px;
  font-size: 13px;
  color: var(--muted);
}

/* ---------- Form ---------- */

.field { margin-bottom: 16px; }

.field label,
.group-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
}

.label-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.btn-link {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--focus);
  cursor: pointer;
}

.btn-link:hover { text-decoration: underline; }

.field-hint {
  margin: 6px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.required { color: var(--error); }
.optional { color: var(--muted); font-weight: 400; }

textarea, select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  font: inherit;
  font-size: 14px;
  color: var(--text);
  background: var(--surface);
}

textarea { resize: vertical; min-height: 64px; }

textarea:focus, select:focus {
  outline: none;
  border-color: var(--focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 12px;
}

.field-grid .field { margin-bottom: 16px; }

.field-error {
  margin: 6px 0 0;
  font-size: 12.5px;
  color: var(--error);
}

/* Model checkboxes */

.model-checks {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.model-check {
  display: flex;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 8px 11px;
  cursor: pointer;
  font-size: 13.5px;
  font-weight: 500;
  user-select: none;
  transition: border-color 0.12s, background 0.12s;
}

.model-check:has(input:checked) {
  border-color: var(--text);
  background: #f2f3f5;
}

.model-check input {
  accent-color: var(--text);
  margin: 0;
}

.model-check small {
  color: var(--muted);
  font-weight: 400;
  font-size: 11.5px;
}

.btn-primary {
  width: 100%;
  margin-top: 4px;
  padding: 12px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 10px;
  font: inherit;
  font-size: 14.5px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.12s;
}

.btn-primary:hover { background: var(--primary-hover); }
.btn-primary:active { transform: translateY(1px); }

/* ---------- Model router card ---------- */

.router-card {
  margin-bottom: 18px;
  padding: 18px 20px;
}

.router-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.router-title {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
}

.router-pick {
  margin: 0 0 6px;
  font-size: 15.5px;
}

.router-pick strong { font-weight: 700; }

.router-summary {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

.router-details { margin-top: 12px; }

.router-details summary {
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.router-rank {
  margin: 10px 0 0;
  padding-left: 20px;
}

.router-rank li {
  font-size: 13px;
  color: var(--text);
  margin-bottom: 9px;
}

.router-app { font-weight: 600; }

.router-free {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
}

.router-meta {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.router-meta a {
  color: var(--focus);
  text-decoration: none;
}

.router-meta a:hover { text-decoration: underline; }

/* ---------- Results ---------- */

.empty-state {
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius);
  padding: 56px 32px;
  text-align: center;
  color: var(--muted);
}

.empty-state svg { opacity: 0.45; margin-bottom: 10px; }

.empty-state p {
  margin: 0 auto;
  max-width: 380px;
  font-size: 13.5px;
}

.results-title {
  margin: 2px 0 12px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.tabs {
  display: flex;
  gap: 2px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.tab {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 9px 14px;
  font: inherit;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--muted);
  cursor: pointer;
  margin-bottom: -1px;
}

.tab:hover { color: var(--text); }

.tab[aria-selected="true"] {
  color: var(--text);
  border-bottom-color: var(--text);
  font-weight: 600;
}

.tab-reco::after {
  content: "•";
  color: var(--focus);
  margin-left: 5px;
}

.panel { padding: 20px; }

.panel-toolbar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.panel-model {
  font-size: 15px;
  font-weight: 600;
}

.panel-model small {
  color: var(--muted);
  font-weight: 400;
  font-size: 12.5px;
  margin-left: 6px;
}

.btn-copy {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 6px 14px;
  font: inherit;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.12s;
}

.btn-copy:hover { background: #f2f3f5; }

.btn-copy.copied {
  border-color: var(--text);
  background: var(--text);
  color: #fff;
}

.prompt-text {
  background: #fafafa;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin: 0;
  font-family: var(--mono);
  font-size: 12.8px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 460px;
  overflow: auto;
}

.prompt-meta {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.why {
  margin-top: 14px;
  border-top: 1px solid var(--border);
  padding-top: 12px;
}

.why summary {
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  color: var(--text);
}

.why ul {
  margin: 10px 0 0;
  padding-left: 18px;
}

.why li {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 7px;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 18px 24px;
  text-align: center;
}

.site-footer p {
  margin: 0;
  font-size: 12.5px;
  color: var(--muted);
}

/* ---------- Responsive ---------- */

@media (max-width: 920px) {
  .layout { grid-template-columns: 1fr; }
  .tagline { display: none; }
}

/* ---------- Site nav (v0.4) ---------- */

.site-nav {
  display: flex;
  gap: 18px;
}

.site-nav a {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
}

.site-nav a:hover { color: var(--text); }

.site-nav a.active {
  color: var(--text);
  font-weight: 600;
}

/* ---------- Model guide view (v0.4) ---------- */

.layout-guide {
  max-width: 1120px;
  margin: 0 auto;
  padding: 32px 24px 48px;
}

.guide-head h1 {
  margin: 0 0 4px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.guide-head p {
  margin: 0;
  font-size: 13.5px;
  color: var(--muted);
}

.guide-updated {
  margin-top: 6px;
  font-size: 12px;
}

.guide-grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
  align-items: start;
}

.guide-card { padding: 20px; }

.guide-task {
  font-size: 15px;
  font-weight: 600;
}

.guide-cta {
  display: block;
  margin-top: 12px;
}

/* ---------- Compare view (v0.5) ---------- */

.results-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.results-head .results-title { margin: 2px 0 12px; }

.compare-empty { margin-bottom: 8px; padding: 40px 24px; }

.compare-empty a { color: var(--focus); }

.compare-meta {
  margin: 0 0 4px;
  font-size: 13px;
  color: var(--muted);
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
  margin-top: 14px;
  align-items: start;
}

.compare-col { padding: 18px; }

.compare-col-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.win-badge {
  font-size: 11px;
  font-weight: 600;
  border: 1px solid var(--text);
  border-radius: 999px;
  padding: 2px 9px;
  white-space: nowrap;
}

.compare-win { border-color: var(--text); }

.compare-prompt { margin-bottom: 12px; }

.compare-prompt summary {
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  color: var(--muted);
}

.compare-prompt .btn-copy { margin-top: 8px; }

.prompt-text-sm {
  font-size: 12px;
  max-height: 180px;
  margin-top: 8px;
}

.compare-label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  margin-bottom: 6px;
}

.compare-output {
  font-size: 13px;
  min-height: 140px;
}

.stars {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-top: 10px;
}

.star {
  background: none;
  border: none;
  padding: 2px;
  font-size: 20px;
  line-height: 1;
  color: var(--border-strong);
  cursor: pointer;
}

.star.on { color: var(--text); }

.score-label {
  font-size: 12px;
  color: var(--muted);
  margin-left: 6px;
}

.compare-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 18px;
}

.btn-inline {
  width: auto;
  margin-top: 0;
  padding: 10px 20px;
}

.history { margin-top: 32px; }

.history h2 {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}

.history-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.history-goal {
  font-size: 13.5px;
  font-weight: 500;
}

.history-meta {
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
}

.history-actions {
  display: flex;
  gap: 12px;
  flex: none;
}

.danger { color: var(--error); }

/* ---------- Versioning (v0.6) ---------- */

.prompt-edit {
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.6;
  min-height: 150px;
  margin-top: 8px;
  background: #fafafa;
}

/* ---------- v0.7: prominent pill nav (overrides earlier .site-nav rules) ---------- */

.site-nav {
  gap: 8px;
  flex-wrap: wrap;
}

.site-nav a {
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 7px 14px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--muted);
  background: var(--surface);
  text-decoration: none;
  transition: color 0.12s, border-color 0.12s, background 0.12s;
}

.site-nav a:hover {
  color: var(--text);
  border-color: var(--text);
  text-decoration: none;
}

.site-nav a.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ---------- v0.7: text inputs (Settings) ---------- */

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  font: inherit;
  font-size: 14px;
  color: var(--text);
  background: var(--surface);
}

input[type="text"]:focus,
input[type="password"]:focus {
  outline: none;
  border-color: var(--focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.settings-card {
  max-width: 640px;
}

.settings-card .card-title { margin-top: 22px; }
.settings-card .card-title:first-child { margin-top: 0; }
.settings-card .router-meta { margin-top: 16px; }

/* ---------- v0.7: auto-run row in Compare ---------- */

.run-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 6px;
}

.run-row .compare-label { margin-bottom: 0; }

.run-status {
  margin: 6px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.run-status.error { color: var(--error); }

/* ---------- v0.8: view switching fix + animated transition ---------- */

[hidden] { display: none !important; }

.view { animation: viewIn 0.28s ease; }

@keyframes viewIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .view { animation: none; }
}

/* ---------- v0.9: Chains ---------- */

.chain-setup { margin-bottom: 24px; }

.chain-step {
  margin-bottom: 16px;
  padding: 20px;
  max-width: 860px;
}

.chain-step-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

.chain-step-head select {
  width: auto;
  padding: 6px 10px;
  font-size: 13px;
}

.chain-desc {
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--muted);
}

/* ---------- v0.10: grouped model selection + catalog ---------- */

.model-group-label {
  margin: 12px 0 6px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
}

.model-groups .model-group-label:first-child { margin-top: 0; }

.model-group-label small {
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}

.catalog { margin-top: 40px; }

.catalog h2 {
  margin: 0 0 4px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.catalog-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
}

.catalog-list li {
  margin-bottom: 14px;
  font-size: 13px;
}

.catalog-model-note {
  display: block;
  font-size: 12.5px;
  color: var(--muted);
  margin-top: 2px;
}

/* ---------- v0.11: futuristic-minimal layer ---------- */

body::before {
  content: "";
  position: fixed;
  inset: -20%;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(600px 420px at 18% 12%, rgba(37, 99, 235, 0.07), transparent 60%),
    radial-gradient(700px 480px at 85% 30%, rgba(124, 58, 237, 0.06), transparent 60%),
    radial-gradient(640px 500px at 55% 95%, rgba(6, 182, 212, 0.05), transparent 60%);
  animation: aurora 26s ease-in-out infinite alternate;
}

@keyframes aurora {
  from { transform: translate3d(-2%, -1%, 0) scale(1); }
  to { transform: translate3d(2%, 2%, 0) scale(1.06); }
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.brand-name {
  background: linear-gradient(90deg, var(--text) 55%, #2563eb 130%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.badge-privacy {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: #15803d;
  border-color: rgba(21, 128, 61, 0.35);
  cursor: help;
}

.btn-primary {
  background: linear-gradient(160deg, #23252e, #0e0f13);
  transition: box-shadow 0.2s, transform 0.12s;
}

.btn-primary:hover {
  background: linear-gradient(160deg, #1a1c22, #000);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.14), 0 10px 30px rgba(37, 99, 235, 0.18);
}

.guide-card, .chain-step, .compare-col, .panel {
  transition: transform 0.16s ease, box-shadow 0.16s ease;
}

.guide-card:hover, .chain-step:hover, .compare-col:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(23, 24, 28, 0.07);
}

.steps-strip {
  list-style: none;
  margin: 22px auto 0;
  padding: 0;
  max-width: 320px;
  text-align: left;
}

.steps-strip li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text);
  margin-bottom: 9px;
}

.step-n {
  flex: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--text);
  color: #fff;
  font-size: 11.5px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

.trust-line {
  margin: 16px 0 0;
  font-size: 12px;
  color: #15803d;
  font-weight: 500;
}

.tabs { flex-wrap: wrap; }

@media (prefers-reduced-motion: reduce) {
  body::before { animation: none; }
  .guide-card, .chain-step, .compare-col, .panel { transition: none; }
}

/* ---------- v0.12: language & theme controls ---------- */

.lang-select {
  width: auto;
  padding: 6px 9px;
  font-size: 12.5px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
}

.icon-btn {
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  border-radius: 8px;
  padding: 5px 10px;
  font-size: 14px;
  line-height: 1.4;
  cursor: pointer;
}

.icon-btn:hover { border-color: var(--text); }

.lang-note {
  max-width: 1072px;
  margin: 16px auto -8px;
  padding: 10px 14px;
  font-size: 12.5px;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
}

/* ---------- v0.12: dark theme ---------- */

[data-theme="dark"] {
  --bg: #0f1013;
  --surface: #17181c;
  --text: #e7e9ee;
  --muted: #9aa1ad;
  --border: #262932;
  --border-strong: #343947;
  --primary: #e7e9ee;
  --primary-hover: #ffffff;
}

[data-theme="dark"] .site-header { background: rgba(15, 16, 19, 0.75); }

[data-theme="dark"] .brand-name {
  background: linear-gradient(90deg, #e7e9ee 55%, #60a5fa 130%);
  -webkit-background-clip: text;
  background-clip: text;
}

[data-theme="dark"] .btn-primary {
  background: linear-gradient(160deg, #2563eb, #4f46e5);
  color: #fff;
}

[data-theme="dark"] .btn-primary:hover {
  background: linear-gradient(160deg, #1d4ed8, #4338ca);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2), 0 10px 30px rgba(59, 130, 246, 0.25);
}

[data-theme="dark"] .site-nav a.active {
  background: #e7e9ee;
  border-color: #e7e9ee;
  color: #0f1013;
}

[data-theme="dark"] .model-check:has(input:checked) { background: #232633; }
[data-theme="dark"] .btn-copy:hover { background: #232633; }
[data-theme="dark"] .btn-copy.copied { background: var(--text); color: #0f1013; }
[data-theme="dark"] .prompt-text,
[data-theme="dark"] .prompt-edit { background: #101116; }
[data-theme="dark"] textarea,
[data-theme="dark"] select,
[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="password"] { background: #101116; }
[data-theme="dark"] .step-n { color: #0f1013; }
[data-theme="dark"] .badge-privacy { color: #4ade80; border-color: rgba(74, 222, 128, 0.35); }
[data-theme="dark"] .trust-line { color: #4ade80; }

[data-theme="dark"] body::before {
  background:
    radial-gradient(600px 420px at 18% 12%, rgba(59, 130, 246, 0.10), transparent 60%),
    radial-gradient(700px 480px at 85% 30%, rgba(139, 92, 246, 0.09), transparent 60%),
    radial-gradient(640px 500px at 55% 95%, rgba(34, 211, 238, 0.07), transparent 60%);
}

[data-theme="dark"] .guide-card:hover,
[data-theme="dark"] .chain-step:hover,
[data-theme="dark"] .compare-col:hover {
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.45);
}

/* ---------- v0.13: model database ---------- */

.db-search {
  margin: 14px 0 16px;
  max-width: 420px;
  display: block;
}

.db-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 14px;
  align-items: start;
}

.db-row {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}

.db-row-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.db-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 8px;
}

.chip {
  font-size: 10.5px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.chip-free, .chip-auto-run { color: #15803d; border-color: rgba(21, 128, 61, 0.4); }
.chip-open-weights { color: #2563eb; border-color: rgba(37, 99, 235, 0.4); }
.chip-private, .chip-rumored { color: #7c3aed; border-color: rgba(124, 58, 237, 0.4); }
.chip-preview { color: #b45309; border-color: rgba(180, 83, 9, 0.4); }
.chip-info-only, .chip-legacy { opacity: 0.72; }
.chip-prompt-target { color: var(--text); border-color: var(--text); }

[data-theme="dark"] .chip-free, [data-theme="dark"] .chip-auto-run { color: #4ade80; border-color: rgba(74, 222, 128, 0.4); }
[data-theme="dark"] .chip-open-weights { color: #60a5fa; border-color: rgba(96, 165, 250, 0.4); }
[data-theme="dark"] .chip-private, [data-theme="dark"] .chip-rumored { color: #a78bfa; border-color: rgba(167, 139, 250, 0.4); }
[data-theme="dark"] .chip-preview { color: #fbbf24; border-color: rgba(251, 191, 36, 0.4); }

.db-review {
  margin: 8px 0 0;
  font-size: 12.5px;
  color: var(--muted);
}

/* ---------- v0.14: search hero, results, About ---------- */

.db-hero { margin: 6px 0 30px; }

.db-search-hero {
  max-width: 560px;
  padding: 13px 16px;
  font-size: 15px;
  border-radius: 12px;
  border-width: 1.5px;
  margin-bottom: 8px;
  box-shadow: 0 2px 14px rgba(23, 24, 28, 0.05);
}

.db-results {
  margin-top: 10px;
  max-width: 720px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.db-hit {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  text-align: left;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  font: inherit;
  font-size: 13.5px;
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.12s, transform 0.12s;
}

.db-hit:hover { border-color: var(--text); transform: translateY(-1px); }
.db-hit small { color: var(--muted); margin-left: 7px; }
.db-hit .badge { flex: none; }

#db-detail { margin-top: 14px; max-width: 720px; }
.db-detail-card { padding: 20px; }
.db-detail-card .compare-actions { margin-top: 14px; }

.about-card { max-width: 840px; margin-bottom: 20px; }

.about-text { font-size: 13.5px; color: var(--text); margin: 0 0 12px; }

.faq { border-bottom: 1px solid var(--border); padding: 11px 0; }
.faq:last-of-type { border-bottom: none; }
.faq summary { font-size: 14px; font-weight: 600; cursor: pointer; }
.faq p { margin: 8px 0 2px; font-size: 13px; color: var(--muted); }

.about-links a { color: var(--focus); text-decoration: none; }
.about-links a:hover { text-decoration: underline; }

/* ---------- v0.15: filter chips, category score bars, generator mark ---------- */

.db-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 12px 0 4px;
  max-width: 720px;
}

.chip-toggle {
  cursor: pointer;
  background: transparent;
  font-family: inherit;
  transition: background-color 0.12s ease, color 0.12s ease, border-color 0.12s ease;
}

.chip-toggle:hover { border-color: var(--text); color: var(--text); }

.chip-toggle.chip-on {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
  opacity: 1;
}

[data-theme="dark"] .chip-toggle.chip-on {
  background: var(--text);
  color: var(--bg);
}

.chip-label { border-style: dashed; }

.db-gen-mark {
  margin-left: 6px;
  font-size: 12px;
  color: #2563eb;
}

[data-theme="dark"] .db-gen-mark { color: #60a5fa; }

.cat-bars { margin: 12px 0 2px; display: grid; gap: 6px; max-width: 460px; }

.cat-row {
  display: grid;
  grid-template-columns: 108px 1fr 34px;
  align-items: center;
  gap: 10px;
}

.cat-label {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.cat-track {
  height: 7px;
  border-radius: 999px;
  background: var(--border);
  overflow: hidden;
  display: block;
}

.cat-fill {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, #2563eb, #7c3aed);
}

.cat-val {
  font-size: 12px;
  font-weight: 600;
  text-align: right;
  color: var(--text);
}

@media (max-width: 560px) {
  .cat-row { grid-template-columns: 88px 1fr 30px; }
}

/* ---------- v0.16: responsive — phone / tablet / desktop ---------- */

html { -webkit-text-size-adjust: 100%; }

/* Tablet & small laptop (<=1024px): single column, comfortable padding */
@media (max-width: 1024px) {
  .layout { grid-template-columns: 1fr; }
  .layout, .layout-guide { padding-left: 20px; padding-right: 20px; }
  .header-inner { padding-left: 18px; padding-right: 18px; }
}

/* Phone (<=680px) */
@media (max-width: 680px) {
  .header-inner {
    flex-wrap: wrap;
    padding: 10px 12px;
    row-gap: 8px;
  }
  .brand { flex-wrap: wrap; row-gap: 4px; }

  /* One-row scrollable nav (no scrollbar) instead of a tall wrapped block */
  .site-nav {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    width: 100%;
    padding-bottom: 2px;
  }
  .site-nav::-webkit-scrollbar { display: none; }
  .site-nav a { flex: none; padding: 8px 12px; }
  .lang-select, .icon-btn { flex: none; }

  .layout, .layout-guide { padding: 18px 13px 40px; }
  .card { padding: 18px 15px; }
  .router-card { padding: 15px 15px; }

  /* iOS Safari zooms on focus when inputs are under 16px */
  textarea, select, input[type="text"], input[type="password"] { font-size: 16px; }

  .field-grid { grid-template-columns: 1fr; }
  .model-check { padding: 10px 12px; }

  .btn-primary { width: 100%; padding: 13px 16px; }
  .compare-actions .btn-primary, .compare-actions .btn-inline { width: auto; }
  .compare-actions { flex-wrap: wrap; gap: 10px; }

  /* Prompt tabs: one scrollable row */
  .tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .tabs::-webkit-scrollbar { display: none; }
  .tab { flex: none; }

  .db-search-hero { max-width: 100%; }
  .db-hit { padding: 12px; }
  .db-filters { gap: 5px; }
  .guide-head h1 { font-size: 22px; }
  .results-head { flex-wrap: wrap; gap: 6px; }
  .steps-strip { flex-direction: column; gap: 8px; align-items: flex-start; }
  .history-item { flex-wrap: wrap; gap: 8px; }
  .site-footer { padding: 18px 14px; }
  .site-footer p { font-size: 12px; }
  .prompt-text { font-size: 12px; }
}

/* Small phone (<=480px) */
@media (max-width: 480px) {
  #privacy-text { display: none; }
  .badge-privacy { padding: 3px 6px; }
  .brand-name { font-size: 16px; }
  .card-title { font-size: 16.5px; }
  .cat-label { font-size: 10.5px; }
}

/* Touch devices: comfortable targets regardless of width */
@media (pointer: coarse) {
  .site-nav a { min-height: 40px; display: inline-flex; align-items: center; }
  .btn-primary, .btn-copy { min-height: 44px; }
  .chip-toggle { padding: 7px 12px; font-size: 11.5px; min-height: 34px; }
  .db-hit { min-height: 52px; }
  .star { font-size: 24px; padding: 4px; }
  .faq summary { padding: 10px 0; }
}

/* ---------- v0.18: RTL support (Arabic) ---------- */

[dir="rtl"] .prompt-text,
[dir="rtl"] .prompt-edit,
[dir="rtl"] .compare-output,
[dir="rtl"] input[type="text"],
[dir="rtl"] input[type="password"] {
  direction: ltr;
  text-align: left;
  unicode-bidi: plaintext;
}

[dir="rtl"] .router-rank { padding-left: 0; padding-right: 20px; }
[dir="rtl"] .db-gen-mark { margin-left: 0; margin-right: 6px; }
[dir="rtl"] .db-hit small { margin-left: 0; margin-right: 7px; }

/* ---------- v0.19: vector icons & interactive micro-animations ---------- */

/* Swaying compass needle in the empty state */
@keyframes needle-sway {
  0% { transform: rotate(-14deg); }
  100% { transform: rotate(16deg); }
}

.compass-idle .needle {
  transform-origin: 50% 50%;
  animation: needle-sway 3.4s ease-in-out infinite alternate;
}

/* Brand needle spins on hover */
.brand-icon .brand-needle {
  transform-origin: 50% 50%;
  transition: transform 0.55s cubic-bezier(0.22, 0.9, 0.35, 1);
}

.brand:hover .brand-icon .brand-needle { transform: rotate(315deg); }

/* Guide task icons */
.guide-task {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}

.guide-icon {
  width: 19px;
  height: 19px;
  flex: none;
  color: var(--muted);
  transition: color 0.18s ease, transform 0.18s ease;
}

.guide-card { transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease; }

.guide-card:hover { transform: translateY(-2px); border-color: var(--border-strong); }

.guide-card:hover .guide-icon { color: var(--focus); transform: scale(1.12); }

/* Model checkboxes: lift + pop when checked */
.model-check { transition: border-color 0.15s ease, transform 0.15s ease, background 0.15s ease; }

.model-check:hover { border-color: var(--text); transform: translateY(-1px); }

@keyframes check-pop {
  0% { transform: scale(1); }
  55% { transform: scale(1.07); }
  100% { transform: scale(1); }
}

.model-check input:checked + span { animation: check-pop 0.2s ease; display: inline-block; }

/* Buttons: satisfying press */
.btn-primary { transition: transform 0.12s ease, box-shadow 0.2s ease, background 0.15s ease; }

.btn-primary:active { transform: scale(0.985); }

.btn-copy:active, .btn-link:active, .chip-toggle:active { transform: scale(0.96); }

/* Filter chips pop when switched on */
.chip-toggle.chip-on { animation: check-pop 0.18s ease; }

/* Search hits: arrow slides in on hover */
.db-hit::after {
  content: "→";
  margin-left: 10px;
  opacity: 0;
  transform: translateX(-5px);
  transition: opacity 0.16s ease, transform 0.16s ease;
  color: var(--muted);
  flex: none;
}

.db-hit:hover::after { opacity: 0.85; transform: translateX(0); }

[dir="rtl"] .db-hit::after { content: "←"; margin-left: 0; margin-right: 10px; transform: translateX(5px); }
[dir="rtl"] .db-hit:hover::after { transform: translateX(0); }

/* FAQ: rotating chevron */
.faq summary { list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
  content: "▾";
  color: var(--muted);
  transition: transform 0.22s ease;
  flex: none;
}

.faq[open] summary::after { transform: rotate(180deg); }

/* Theme toggle: spin once per click */
@keyframes spin-once {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.icon-btn.spin { animation: spin-once 0.45s ease; }

/* Category bars animate on open (width set via JS after paint) */
.cat-fill { transition: width 0.65s cubic-bezier(0.22, 0.9, 0.35, 1); }

/* Stars: hover pop */
.star { transition: transform 0.12s ease, color 0.12s ease; }

.star:hover { transform: scale(1.18); }

/* Nav pills: gentle lift */
.site-nav a { will-change: transform; }

.site-nav a:hover { transform: translateY(-1px); }

/* Respect reduced-motion for everything new */
@media (prefers-reduced-motion: reduce) {
  .compass-idle .needle, .chip-toggle.chip-on, .model-check input:checked + span, .icon-btn.spin { animation: none; }
  .brand-icon .brand-needle, .cat-fill, .guide-card, .guide-icon, .db-hit::after, .faq summary::after { transition: none; }
  .guide-card:hover, .site-nav a:hover, .model-check:hover { transform: none; }
}

/* ---------- v0.20: dark-theme legibility fixes ---------- */

/* Step numbers were white-on-white in dark mode */
[data-theme="dark"] .step-n { color: #0f1013; }

/* Readable error red on dark backgrounds */
[data-theme="dark"] { --error: #f87171; }

/* ---------- v0.20: brand glass surfaces (theme-aware) ---------- */

:root {
  --glass: rgba(255, 255, 255, 0.66);
  --glass-border: rgba(23, 24, 28, 0.09);
}

[data-theme="dark"] {
  --glass: rgba(23, 24, 28, 0.58);
  --glass-border: rgba(255, 255, 255, 0.07);
}

.router-card,
.db-detail-card,
.empty-state,
.lang-note,
.about-card {
  background: var(--glass);
  -webkit-backdrop-filter: blur(14px) saturate(1.15);
  backdrop-filter: blur(14px) saturate(1.15);
  border-color: var(--glass-border);
}

/* Slightly richer aurora in light mode so the glass has something to show */
body::before {
  background:
    radial-gradient(600px 420px at 18% 12%, rgba(37, 99, 235, 0.1), transparent 60%),
    radial-gradient(700px 480px at 85% 30%, rgba(124, 58, 237, 0.085), transparent 60%),
    radial-gradient(640px 500px at 55% 95%, rgba(6, 182, 212, 0.075), transparent 60%);
}

/* Fallback: solid surfaces where backdrop-filter is unsupported */
@supports not (backdrop-filter: blur(1px)) {
  .router-card, .db-detail-card, .empty-state, .lang-note, .about-card { background: var(--surface); }
}


/* ============================================================ *
 *  v0.21 — WhichAI: theme fade, sepia theme, one-row header,   *
 *  mobile tabs, refine box, key tests, merge studio            *
 * ============================================================ */

/* --- Smooth theme switch (no hard flash) --- */
html.theme-fade,
html.theme-fade *,
html.theme-fade *::before,
html.theme-fade *::after {
  transition: background-color 0.35s ease, color 0.35s ease, border-color 0.35s ease,
              fill 0.35s ease, stroke 0.35s ease, box-shadow 0.35s ease !important;
}
@media (prefers-reduced-motion: reduce) {
  html.theme-fade, html.theme-fade *, html.theme-fade *::before, html.theme-fade *::after { transition: none !important; }
}

/* --- Sepia / warm-paper theme --- */
[data-theme="sepia"] {
  --bg: #f4ecdd;
  --surface: #fbf5e9;
  --text: #3f3226;
  --muted: #7d6c54;
  --border: #e4d8c2;
  --border-strong: #cfc0a4;
  --primary: #3f3226;
  --primary-hover: #291f15;
  --focus: #8a5a2b;
  --error: #a33a24;
  --glass: rgba(251, 245, 233, 0.55);
  --glass-border: rgba(63, 50, 38, 0.14);
}
[data-theme="sepia"] .site-header { background: rgba(251, 245, 233, 0.78); }
[data-theme="sepia"] textarea,
[data-theme="sepia"] select,
[data-theme="sepia"] input[type="text"],
[data-theme="sepia"] input[type="password"] { background: #fffaf0; }
[data-theme="sepia"] .prompt-text,
[data-theme="sepia"] .prompt-edit { background: #fdf8ec; }
[data-theme="sepia"] body::before {
  background:
    radial-gradient(600px 420px at 12% -8%, rgba(196, 138, 63, 0.16), transparent 60%),
    radial-gradient(640px 460px at 88% 4%, rgba(163, 88, 55, 0.12), transparent 62%),
    radial-gradient(720px 500px at 55% 108%, rgba(138, 90, 43, 0.10), transparent 64%);
}
[data-theme="sepia"] .badge-privacy { color: #4d6b3a; border-color: rgba(77, 107, 58, 0.4); }
[data-theme="sepia"] .trust-line { color: #4d6b3a; }
[data-theme="sepia"] .brand-name { background: linear-gradient(90deg, #3f3226, #8a5a2b); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* --- Header always on ONE row from tablets up --- */
@media (min-width: 681px) {
  .header-inner { flex-wrap: nowrap; }
  .brand { flex: none; }
  .site-nav {
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .site-nav::-webkit-scrollbar { display: none; }
  .site-nav a { flex: none; white-space: nowrap; }
  .lang-select, .icon-btn { flex: none; }
}
@media (min-width: 681px) and (max-width: 1024px) {
  .site-nav { gap: 6px; }
  .site-nav a { padding: 7px 10px; font-size: 12.5px; }
  .lang-select { padding: 5px 7px; font-size: 12px; }
}

/* --- Mobile: prompt tabs wrap into tappable chips (no side-scroll) --- */
@media (max-width: 680px) {
  .tabs {
    flex-wrap: wrap;
    overflow: visible;
    gap: 6px;
    border-bottom: none;
    padding-bottom: 0;
  }
  .tab {
    flex: none;
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    padding: 8px 13px;
    margin-bottom: 0;
  }
  .tab[aria-selected="true"] {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
  }
  [data-theme="dark"] .tab[aria-selected="true"] { background: #e7e9f2; border-color: #e7e9f2; color: #0f1013; }
}

/* --- Refine with AI --- */
.refine-row { display: flex; align-items: center; gap: 10px; margin-top: 8px; flex-wrap: wrap; }
.refine-row .btn-link::before { content: "\2726 "; }
.refine-hint { margin: 0; }
.refine-box {
  margin-top: 10px;
  padding: 12px 14px;
  border: 1px dashed var(--border-strong);
  border-radius: 10px;
  background: var(--surface);
}
.refine-box label { font-size: 12.5px; color: var(--muted); }
.refine-box textarea { margin-top: 6px; }
.refine-actions { margin-top: 10px; }

/* --- Settings: key guide & tests --- */
.set-guide { margin-bottom: 16px; }
.set-guide-steps { margin: 8px 0 4px; padding-left: 20px; font-size: 13.5px; }
.set-guide-steps li { margin-bottom: 6px; }
.test-row { display: flex; align-items: center; gap: 10px; margin: -2px 0 16px; }
.test-row .run-status { margin: 0; }
.test-status.ok { color: #15803d; }
[data-theme="dark"] .test-status.ok { color: #4ade80; }
[data-theme="sepia"] .test-status.ok { color: #4d6b3a; }

/* --- Merge studio --- */
.merge-toggle { display: flex; gap: 8px; align-items: center; font-size: 13.5px; color: var(--muted); margin: 4px 0 16px; cursor: pointer; }
.merge-toggle input { accent-color: var(--focus); }
.merge-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; align-items: start; }
.merge-sources { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.merge-source-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; }
.merge-source-actions { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.merge-source-actions .btn-copy { padding: 4px 9px; font-size: 12px; }
.merge-x { font-size: 16px; line-height: 1; padding: 2px 6px; }
.merge-source-text {
  font-size: 13px;
  line-height: 1.6;
  max-height: 280px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}
.mg-hl .mg-shared { background: rgba(37, 99, 235, 0.13); border-radius: 3px; box-shadow: 0 1px 0 rgba(37, 99, 235, 0.25); }
[data-theme="dark"] .mg-hl .mg-shared { background: rgba(96, 165, 250, 0.2); box-shadow: 0 1px 0 rgba(96, 165, 250, 0.35); }
[data-theme="sepia"] .mg-hl .mg-shared { background: rgba(138, 90, 43, 0.16); box-shadow: 0 1px 0 rgba(138, 90, 43, 0.3); }
.merge-editor-col { position: sticky; top: 14px; display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.merge-editor-card .label-row { margin-bottom: 6px; }
#merge-draft { font-size: 13.5px; line-height: 1.55; }
.merge-add-card .card-title { font-size: 15px; }
@media (max-width: 920px) {
  .merge-grid { grid-template-columns: 1fr; }
  .merge-editor-col { position: static; }
}
@media (pointer: coarse) {
  .merge-source-actions .btn-copy { padding: 8px 12px; font-size: 12.5px; }
}


/* ============================================================ *
 *  v0.22 — clip-safe buttons, footer links, guided finder,     *
 *  compare subtabs, charts, glossary, model compare, chain     *
 *  roadmap, richer sepia, mobile polish                        *
 * ============================================================ */

/* --- Fix: hover lifts and focus rings must never be clipped.
       .site-nav is an overflow-x scroll container (one-row header), which also
       clips vertically — give it inner breathing room instead of letting the
       translateY(-1px) hover and the pill borders hit the clip edge. --- */
.site-nav { padding-block: 5px; margin-block: -5px; padding-inline: 3px; margin-inline: -3px; }
@media (max-width: 680px) { .site-nav { margin-inline: 0; padding-inline: 2px; padding-bottom: 7px; } }

/* Keyboard focus: visible, consistent, never removed */
a:focus-visible, button:focus-visible, summary:focus-visible, [role="tab"]:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
  border-radius: 8px;
}

/* Coherent hover for secondary buttons (transform only — zero layout shift) */
.btn-copy { transition: background 0.12s, border-color 0.12s, transform 0.12s; }
.btn-copy:hover { border-color: var(--text); transform: translateY(-1px); }

/* Long names must wrap, never overflow */
.panel-model, .mc-cell, .db-hit, .history-goal { overflow-wrap: anywhere; }

/* --- Chart theme palette --- */
:root { --chart-1: #2563eb; --chart-2: #7c3aed; --chart-3: #059669; }
[data-theme="dark"] { --chart-1: #60a5fa; --chart-2: #a78bfa; --chart-3: #34d399; }

/* --- Minimal SVG charts (js/charts.js) --- */
.wc-chart { width: 100%; height: auto; display: block; }
.wc-label { fill: var(--text); font-size: 12px; font-weight: 500; }
.wc-value { fill: var(--text); font-size: 11.5px; font-weight: 600; }
.wc-value-sm { font-size: 10.5px; }
.wc-tick { fill: var(--muted); font-size: 10.5px; }
.wc-axis { fill: var(--muted); font-size: 11px; font-weight: 600; }
.wc-track { fill: var(--border); }
.wc-fill, .wc-fillbar { fill: var(--chart-1); }
.wc-grid { stroke: var(--border); stroke-width: 1; }
.wc-dot { fill: var(--chart-1); stroke: var(--surface); stroke-width: 1.5; }
.wc-ptlabel { fill: var(--text); font-size: 10.5px; font-weight: 500; }
.wc-s1 { fill: var(--chart-1); } .wc-s2 { fill: var(--chart-2); } .wc-s3 { fill: var(--chart-3); }
.wc-est { opacity: 0.55; }
@keyframes wc-grow { from { transform: scaleX(0); } to { transform: scaleX(1); } }
.wc-fill, .wc-fillbar { transform-origin: left center; transform-box: fill-box; animation: wc-grow 0.7s cubic-bezier(0.22, 0.9, 0.35, 1); }
.wc-pt { transition: opacity 0.15s; }
.wc-scatter:hover .wc-pt { opacity: 0.45; }
.wc-scatter .wc-pt:hover { opacity: 1; }

/* --- Footer with quick links --- */
.site-footer { padding: 16px 24px 20px; }
.footer-links { display: flex; justify-content: center; gap: 8px 20px; flex-wrap: wrap; margin-bottom: 8px; }
.footer-links a { color: var(--muted); text-decoration: none; font-size: 12.5px; font-weight: 600; border-bottom: 1px solid transparent; transition: color 0.12s, border-color 0.12s; }
.footer-links a:hover { color: var(--text); border-bottom-color: var(--text); }

/* --- Generator mode switch (goal vs guided finder) --- */
.mode-switch { grid-column: 1 / -1; display: flex; gap: 5px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 5px; width: max-content; max-width: 100%; }
.mode-btn { border: none; background: transparent; padding: 9px 16px; border-radius: 9px; font: inherit; font-size: 13.5px; font-weight: 600; color: var(--muted); cursor: pointer; transition: background 0.15s, color 0.15s; white-space: nowrap; }
.mode-btn:hover { color: var(--text); }
.mode-btn.active { background: var(--primary); color: #fff; }
[data-theme="dark"] .mode-btn.active { color: #0f1013; }
#generator-view.finder-on .form-card, #generator-view.finder-on .results { display: none; }
.finder-wrap { grid-column: 1 / -1; }

/* --- Guided finder --- */
.finder-card { max-width: 780px; padding: 24px; }
.finder-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.finder-title { margin: 0; font-size: 20px; letter-spacing: -0.01em; }
.finder-sub { color: var(--muted); font-size: 13.5px; margin: 6px 0 0; }
.finder-dots { display: flex; gap: 5px; }
.finder-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--border-strong); transition: background 0.2s, transform 0.2s; }
.finder-dot.now { background: var(--focus); transform: scale(1.3); }
.finder-dot.done { background: var(--text); }
.finder-q { font-size: 16.5px; margin: 20px 0 4px; letter-spacing: -0.01em; }
.finder-qsub { color: var(--muted); font-size: 12.5px; margin: 0; }
.finder-opts { display: flex; flex-direction: column; gap: 8px; margin-top: 14px; }
.finder-opts-grid { display: grid; grid-template-columns: 1fr 1fr; }
.finder-opt { text-align: left; background: var(--surface); border: 1px solid var(--border-strong); border-radius: 10px; padding: 12px 14px; font: inherit; cursor: pointer; display: flex; flex-direction: column; gap: 2px; transition: border-color 0.13s, transform 0.13s, background 0.13s, box-shadow 0.13s; }
.finder-opt:hover { border-color: var(--text); transform: translateY(-1px); }
.finder-opt.on { border-color: var(--focus); box-shadow: inset 0 0 0 1px var(--focus); background: rgba(37, 99, 235, 0.06); }
[data-theme="dark"] .finder-opt.on { background: rgba(96, 165, 250, 0.12); }
.finder-opt-label { font-weight: 600; font-size: 14px; }
.finder-opt-sub { font-size: 12px; color: var(--muted); }
.finder-nav { display: flex; gap: 18px; align-items: center; margin-top: 20px; flex-wrap: wrap; }
.finder-result { padding: 18px; margin-top: 12px; }
.finder-top { border-color: var(--focus); box-shadow: 0 10px 30px rgba(37, 99, 235, 0.08); }
.finder-block-title { font-size: 11.5px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; color: var(--muted); margin: 14px 0 6px; }
.finder-why { margin: 0; padding-left: 18px; }
.finder-why li { font-size: 13px; margin-bottom: 5px; }
.finder-line { font-size: 13px; margin: 7px 0 0; }
.finder-limit { color: var(--muted); }
.finder-alts { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; align-items: start; }
.finder-alt-title { margin-top: 22px; }
.finder-actions { margin-top: 14px; }
[dir="rtl"] .finder-why { padding-left: 0; padding-right: 18px; }

/* --- Compare subtabs --- */
.subtabs { display: flex; gap: 6px; margin: 16px 0 18px; flex-wrap: wrap; }
.subtab { border: 1px solid var(--border-strong); background: var(--surface); border-radius: 999px; padding: 8px 16px; font: inherit; font-size: 13px; font-weight: 600; color: var(--muted); cursor: pointer; transition: background 0.13s, color 0.13s, border-color 0.13s, transform 0.13s; }
.subtab:hover { border-color: var(--text); color: var(--text); transform: translateY(-1px); }
.subtab.active { background: var(--primary); border-color: var(--primary); color: #fff; }
[data-theme="dark"] .subtab.active { color: #0f1013; }

/* --- Model guide: insights (charts) --- */
.insights { margin: 4px 0 30px; }
.insights h2 { font-size: 18px; font-weight: 600; margin: 0 0 2px; letter-spacing: -0.01em; }
.insights-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 14px; align-items: start; }
.insight-card { padding: 16px 18px; }
.insight-card h3 { margin: 0 0 10px; font-size: 14.5px; font-weight: 600; }
.chart-box svg { width: 100%; height: auto; }

/* --- Model guide: spec rows in the detail card --- */
.db-specs { margin: 12px 0 2px; display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 8px 14px; }
.db-spec { font-size: 12.5px; }
.db-spec b { display: block; font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); margin-bottom: 1px; }

/* --- Model comparison (on paper) --- */
.mc-head h2 { margin: 0 0 4px; font-size: 20px; font-weight: 700; letter-spacing: -0.01em; }
.mc-head p { margin: 0; font-size: 13.5px; color: var(--muted); }
.mc-selrow { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin: 16px 0 18px; }
.mc-selwrap { display: flex; gap: 6px; align-items: center; }
.mc-select { width: auto; max-width: 250px; padding: 9px 10px; font-size: 13.5px; }
.mc-chart-card, .mc-table-card { padding: 18px 20px; margin-bottom: 16px; max-width: 920px; }
.mc-block-title { margin: 0 0 10px; font-size: 15px; font-weight: 600; }
.mc-grid { display: grid; grid-template-columns: 118px repeat(2, 1fr); }
.mc-grid-3 { grid-template-columns: 106px repeat(3, 1fr); }
.mc-rowlabel { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); padding: 10px 8px 10px 0; border-bottom: 1px solid var(--border); }
.mc-cell { font-size: 13px; padding: 10px 10px 10px 0; border-bottom: 1px solid var(--border); }
.mc-name { display: flex; flex-direction: column; gap: 4px; align-items: flex-start; }
.mc-na { color: var(--border-strong); }
.mc-review { font-size: 12.5px; color: var(--muted); }

/* --- Glossary --- */
.glossary-list { margin-top: 14px; max-width: 780px; }
.gl-def { font-size: 13.5px; color: var(--text); margin: 6px 0 6px; }
.gl-ex { font-size: 12.5px; color: var(--muted); margin: 0 0 8px; font-style: italic; }
.gl-link { font-size: 12.5px; }
.gl-link a { color: var(--focus); text-decoration: none; }
.gl-link a:hover { text-decoration: underline; }

/* --- Chains: visual workflow roadmap --- */
.chain-map-wrap { margin: 0 0 18px; }
.chain-map { display: flex; align-items: stretch; overflow-x: auto; padding: 6px 2px 10px; }
.chain-node { flex: 1 1 0; min-width: 165px; background: var(--glass); border: 1px solid var(--glass-border); border-radius: 12px; padding: 11px 13px; position: relative; -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
.chain-node + .chain-node { margin-left: 28px; }
.chain-node + .chain-node::before { content: "\2192"; position: absolute; left: -21px; top: 50%; transform: translateY(-50%); color: var(--muted); font-weight: 600; }
[dir="rtl"] .chain-node + .chain-node { margin-left: 0; margin-right: 28px; }
[dir="rtl"] .chain-node + .chain-node::before { content: "\2190"; left: auto; right: -21px; }
.chain-node-head { display: flex; align-items: center; gap: 8px; }
.chain-node .step-n { width: 20px; height: 20px; font-size: 11px; flex: none; }
.chain-node-name { font-size: 13px; font-weight: 600; }
.chain-node-model { display: inline-block; margin-top: 4px; font-size: 11px; font-weight: 600; color: var(--focus); }
.chain-node-desc { font-size: 11.5px; color: var(--muted); margin: 5px 0 0; }
.chain-io { font-size: 10.5px; color: var(--muted); margin-top: 7px; border-top: 1px dashed var(--border); padding-top: 6px; }
.chain-node.done { border-color: rgba(21, 128, 61, 0.5); }
.chain-node.done .step-n { background: #15803d; color: #fff; }
@supports not (backdrop-filter: blur(1px)) { .chain-node { background: var(--surface); } }

/* Chain step cards: reorder / remove tools */
.chain-step-tools { display: flex; gap: 4px; align-items: center; flex: none; }
.chain-step-tools .btn-copy { padding: 3px 9px; font-size: 13px; line-height: 1.3; }
.chain-custom-instr { margin: 0 0 10px; }
@media (pointer: coarse) { .chain-step-tools .btn-copy { min-height: 34px; padding: 5px 11px; } }

/* --- Sepia theme, take 2: warmer, unmistakably distinct from light --- */
[data-theme="sepia"] {
  --bg: #f1e5cd;
  --surface: #faf1de;
  --text: #3c2f1f;
  --muted: #6e5c41;
  --border: #e0d0b0;
  --border-strong: #c4ad85;
  --primary: #4a3826;
  --primary-hover: #322517;
  --focus: #7a4d20;
  --error: #a33a24;
  --glass: rgba(250, 241, 222, 0.6);
  --glass-border: rgba(60, 47, 31, 0.16);
  --chart-1: #8a5a2b;
  --chart-2: #4d6b3a;
  --chart-3: #a35837;
}
[data-theme="sepia"] .site-header { background: rgba(250, 241, 222, 0.82); }
[data-theme="sepia"] textarea,
[data-theme="sepia"] select,
[data-theme="sepia"] input[type="text"],
[data-theme="sepia"] input[type="password"] { background: #fdf6e6; }
[data-theme="sepia"] .prompt-text,
[data-theme="sepia"] .prompt-edit { background: #f7edd8; }
[data-theme="sepia"] .btn-primary { background: linear-gradient(160deg, #5a4530, #382a1a); }
[data-theme="sepia"] .btn-primary:hover { background: linear-gradient(160deg, #4a3826, #241a0f); box-shadow: 0 0 0 3px rgba(138, 90, 43, 0.2), 0 10px 30px rgba(138, 90, 43, 0.22); }
[data-theme="sepia"] .site-nav a.active { background: #4a3826; border-color: #4a3826; color: #f8f1e2; }
[data-theme="sepia"] .mode-btn.active, [data-theme="sepia"] .subtab.active { background: #4a3826; border-color: #4a3826; color: #f8f1e2; }
[data-theme="sepia"] .step-n { background: #4a3826; color: #f8f1e2; }
[data-theme="sepia"] .btn-copy.copied { background: #4a3826; border-color: #4a3826; color: #f8f1e2; }
[data-theme="sepia"] .model-check:has(input:checked) { background: #f3e6ca; }
[data-theme="sepia"] .btn-copy:hover { background: #f3e6ca; }
[data-theme="sepia"] .cat-fill { background: linear-gradient(90deg, #8a5a2b, #a35837); }
[data-theme="sepia"] .brand-name { background: linear-gradient(90deg, #3c2f1f, #8a5a2b); -webkit-background-clip: text; background-clip: text; color: transparent; }
[data-theme="sepia"] .finder-opt.on { background: rgba(122, 77, 32, 0.09); }
[data-theme="sepia"] .finder-top { box-shadow: 0 10px 30px rgba(138, 90, 43, 0.12); }
[data-theme="sepia"] body::before {
  background:
    radial-gradient(620px 440px at 12% -8%, rgba(190, 128, 55, 0.2), transparent 60%),
    radial-gradient(660px 470px at 88% 4%, rgba(160, 84, 50, 0.15), transparent 62%),
    radial-gradient(740px 520px at 55% 108%, rgba(130, 86, 40, 0.13), transparent 64%);
}
[data-theme="sepia"] .tab[aria-selected="true"] { color: #fff; }
@media (max-width: 680px) {
  [data-theme="sepia"] .tab[aria-selected="true"] { background: #4a3826; border-color: #4a3826; color: #f8f1e2; }
}

/* --- Mobile polish for everything new --- */
@media (max-width: 680px) {
  .mode-switch { width: 100%; }
  .mode-btn { flex: 1 1 auto; text-align: center; padding: 10px 8px; font-size: 12.5px; white-space: normal; }
  .finder-card { padding: 18px 15px; }
  .finder-opts-grid { grid-template-columns: 1fr; }
  .finder-alts { grid-template-columns: 1fr; }
  .insights-grid { grid-template-columns: 1fr; }
  .mc-grid { grid-template-columns: 88px repeat(2, 1fr); }
  .mc-grid-3 { grid-template-columns: 80px repeat(3, 1fr); }
  .mc-cell { font-size: 12px; }
  .mc-rowlabel { font-size: 10px; }
  .mc-select { max-width: 100%; width: 100%; }
  .mc-selwrap { width: 100%; }
  .subtabs { gap: 5px; }
  .subtab { flex: 1 1 auto; text-align: center; }
  .footer-links { gap: 6px 16px; }
  .glossary-list { margin-top: 10px; }
}
@media (max-width: 920px) {
  .insights-grid { grid-template-columns: 1fr; }
}

/* --- Reduced motion: nothing new moves --- */
@media (prefers-reduced-motion: reduce) {
  .wc-fill, .wc-fillbar { animation: none; }
  .btn-copy:hover, .subtab:hover, .finder-opt:hover, .mode-btn { transform: none; transition: none; }
  .finder-dot { transition: none; }
}


/* ============================================================ *
 *  v0.23 - dark-theme legibility, native control scheme,       *
 *  unified corner radii                                        *
 * ============================================================ */

/* Readable accent in dark: the old #2563eb was near-invisible on dark gray.
   Every link, action link, focus ring and accent now uses a light blue. */
:root { color-scheme: light; --r-card: 14px; --r-ctl: 10px; }
[data-theme="dark"] { --focus: #60a5fa; color-scheme: dark; }
[data-theme="sepia"] { color-scheme: light; }

[data-theme="dark"] textarea:focus,
[data-theme="dark"] select:focus,
[data-theme="dark"] input[type="text"]:focus,
[data-theme="dark"] input[type="password"]:focus { box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.18); }
[data-theme="dark"] .finder-top { box-shadow: 0 10px 30px rgba(96, 165, 250, 0.1); }
[data-theme="dark"] .chip-open-weights { color: #60a5fa; }

/* One radius language for the whole app:
   surfaces 14px, controls 10px, pills/chips stay fully round (999) by design. */
.card, .empty-state, .lang-note, .refine-box, .mode-switch, .chain-node, .db-search-hero { border-radius: var(--r-card); }
.btn-primary, .btn-copy, .icon-btn, .lang-select,
textarea, select, input[type="text"], input[type="password"],
.site-nav a, .mode-btn, .db-hit, .db-row,
.prompt-text, .prompt-edit, .finder-opt { border-radius: var(--r-ctl); }
a:focus-visible, button:focus-visible, summary:focus-visible, [role="tab"]:focus-visible { border-radius: var(--r-ctl); }

/* --- v0.23: update toast --- */
.update-toast {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  z-index: 80;
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-card);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.18);
  padding: 10px 14px;
  font-size: 13px;
  max-width: calc(100vw - 24px);
}
.update-toast .btn-primary { width: auto; margin: 0; padding: 8px 14px; }


/* ============================================================ *
 *  v0.24 - "More" nav menu, homepage demo, Stack Optimizer,    *
 *  Prompt Doctor                                               *
 * ============================================================ */

/* --- Nav: fewer choices + a rich dropdown --- */
.nav-more-wrap { display: inline-flex; flex: none; }
.nav-more {
  border: 1px solid var(--border-strong);
  border-radius: var(--r-ctl);
  padding: 7px 14px;
  font: inherit;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--muted);
  background: var(--surface);
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.12s, border-color 0.12s, background 0.12s, transform 0.12s;
}
.nav-more:hover { color: var(--text); border-color: var(--text); transform: translateY(-1px); }
.nav-more.active { background: var(--primary); border-color: var(--primary); color: #fff; }
[data-theme="dark"] .nav-more.active { background: #e7e9ee; border-color: #e7e9ee; color: #0f1013; }
[data-theme="sepia"] .nav-more.active { background: #4a3826; border-color: #4a3826; color: #f8f1e2; }

.nav-more-panel {
  position: fixed;
  inset-inline-end: 14px;
  z-index: 70;
  min-width: 270px;
  max-width: min(340px, calc(100vw - 24px));
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-card);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.16);
  padding: 6px;
  max-height: min(70vh, 480px);
  overflow-y: auto;
  animation: viewIn 0.16s ease;
}
.more-item {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 10px 12px;
  border-radius: var(--r-ctl);
  text-decoration: none;
  color: var(--text);
  border: none;
  background: none;
  transition: background 0.12s;
}
.more-item strong { font-size: 13.5px; font-weight: 600; }
.more-item .more-sub { font-size: 11.5px; color: var(--muted); }
.more-item:hover { background: var(--bg); }
.more-item.active strong { color: var(--focus); }
@media (max-width: 680px) {
  .nav-more-panel { inset-inline: 12px; max-width: none; }
}
@media (pointer: coarse) { .more-item { padding: 12px; } }
@media (prefers-reduced-motion: reduce) { .nav-more-panel { animation: none; } .nav-more:hover { transform: none; } }

/* --- Homepage demo (result before any form) --- */
.demo-card {
  margin: 18px auto 4px;
  max-width: 430px;
  text-align: start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  padding: 14px 16px;
  color: var(--text);
  box-shadow: 0 8px 26px rgba(0, 0, 0, 0.05);
}
.demo-tag {
  margin: 0 0 6px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--focus);
}
.demo-goal { margin: 0 0 8px; font-size: 13.5px; font-style: italic; color: var(--muted); }
.demo-line { margin: 4px 0 0; font-size: 13px; }
.demo-alt { color: var(--muted); font-size: 12.5px; }
.demo-actions { margin-top: 12px; gap: 10px; flex-wrap: wrap; }
.demo-actions .btn-primary { padding: 9px 14px; font-size: 13px; }

/* --- Stack Optimizer --- */
.stack-card { max-width: 780px; }
.stack-chips { margin: 8px 0 2px; max-width: none; }
.stack-budget { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.stack-opt.on { border-color: var(--focus); box-shadow: inset 0 0 0 1px var(--focus); background: rgba(37, 99, 235, 0.06); }
[data-theme="dark"] .stack-opt.on { background: rgba(96, 165, 250, 0.12); }
[data-theme="sepia"] .stack-opt.on { background: rgba(122, 77, 32, 0.09); }
.stack-result { max-width: 780px; margin-top: 18px; }
.stack-result-title { margin-top: 0; }
.stack-cost { margin-bottom: 12px; }
.stack-cost-main { margin: 0; font-size: 17px; }
.stack-grid { margin-top: 12px; }
.stack-extra { margin-top: 12px; }
@media (max-width: 680px) {
  .stack-budget { grid-template-columns: 1fr; }
}

/* --- Prompt Doctor --- */
.doctor-card { max-width: 780px; }
.doctor-card textarea { margin-top: 12px; }
.doctor-result { max-width: 920px; margin-top: 16px; display: flex; flex-direction: column; gap: 12px; }
.doctor-score { font-size: 26px; font-weight: 700; letter-spacing: -0.02em; }
.doctor-score.good { color: #15803d; }
.doctor-score.mid { color: #b45309; }
.doctor-score.low { color: var(--error); }
[data-theme="dark"] .doctor-score.good { color: #4ade80; }
[data-theme="dark"] .doctor-score.mid { color: #fbbf24; }
[data-theme="sepia"] .doctor-score.good { color: #4d6b3a; }
.doctor-track { max-width: none; height: 9px; margin-top: 10px; }
.doctor-fill.good { background: linear-gradient(90deg, #15803d, #4ade80); }
.doctor-fill.mid { background: linear-gradient(90deg, #b45309, #f59e0b); }
.doctor-fill.low { background: linear-gradient(90deg, #b91c1c, #f87171); }
.doctor-checks { list-style: none; margin: 0; padding: 0; }
.doctor-check { display: flex; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--border); align-items: flex-start; }
.doctor-check:last-child { border-bottom: none; }
.doctor-mark { flex: none; width: 22px; height: 22px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; }
.doctor-check.pass .doctor-mark { background: rgba(21, 128, 61, 0.14); color: #15803d; }
.doctor-check.miss .doctor-mark { background: rgba(185, 28, 28, 0.1); color: var(--error); }
[data-theme="dark"] .doctor-check.pass .doctor-mark { color: #4ade80; }
.doctor-check-body { display: flex; flex-direction: column; gap: 2px; font-size: 13px; }
.doctor-check-body strong { font-weight: 600; }
.doctor-check.pass .doctor-check-body strong { color: var(--muted); font-weight: 500; }
.doctor-tip { font-size: 12.5px; color: var(--muted); }
.doctor-panes { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 10px; }
.doctor-pane { min-width: 0; }
.doctor-pane .prompt-text { max-height: 340px; }
.doctor-why { margin-top: 12px; }
@media (max-width: 920px) {
  .doctor-panes { grid-template-columns: 1fr; }
}


/* ============================================================ *
 *  v0.25 - inline model detail, More-menu style fix, official  *
 *  links, Model Radar, share cards                             *
 * ============================================================ */

/* --- Fix: panel items must NOT inherit the nav pill styles.
       .site-nav a.active was painting a light pill behind panel rows,
       leaving low-contrast accent text on it. Panel rows get their own
       calm active state instead. --- */
.site-nav .nav-more-panel a,
.site-nav .nav-more-panel a:hover,
.site-nav .nav-more-panel a.active {
  background: none;
  border: none;
  color: var(--text);
  transform: none;
  padding: 10px 12px;
  border-radius: var(--r-ctl);
}
.site-nav .nav-more-panel a:hover { background: var(--bg); }
.site-nav .nav-more-panel a.active {
  background: var(--bg);
  box-shadow: inset 2px 0 0 var(--focus);
}
.site-nav .nav-more-panel a.active strong { color: var(--text); }

/* --- Radar dot on the More button (unseen changes) --- */
.nav-more { position: relative; }
.nav-more.has-dot::after {
  content: "";
  position: absolute;
  top: 4px;
  inset-inline-end: 5px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--focus);
  box-shadow: 0 0 0 2px var(--surface);
}

/* --- Model guide: detail opens as an accordion under the clicked row --- */
.db-hit.open {
  border-color: var(--focus);
  box-shadow: inset 0 0 0 1px var(--focus);
}
.db-hit.open::after { opacity: 0.9; transform: rotate(90deg); }
[dir="rtl"] .db-hit.open::after { transform: rotate(-90deg); }
#db-results #db-detail { margin: 2px 0 6px; }
#db-results #db-detail .db-detail-card {
  animation: detail-in 0.22s ease;
  transform-origin: top center;
  border-color: var(--glass-border);
}
@keyframes detail-in {
  from { opacity: 0; transform: translateY(-7px); }
  to { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  #db-results #db-detail .db-detail-card { animation: none; }
}

/* --- Official app links --- */
a.btn-official {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}
.panel-btns { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.run-row .btn-official { font-size: 12.5px; }

/* --- Model Radar --- */
#radar-wrap { max-width: 820px; }
.radar-since {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 12px 0 0;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--focus);
  font-size: 12.5px;
  font-weight: 600;
}
[data-theme="dark"] .radar-since { background: rgba(96, 165, 250, 0.14); }
[data-theme="sepia"] .radar-since { background: rgba(122, 77, 32, 0.12); }
.radar-filters { margin: 16px 0 4px; }
.radar-sec { margin: 18px 0 4px; }
.radar-list { display: flex; flex-direction: column; gap: 10px; margin-top: 10px; }
.radar-item { padding: 14px 16px; }
.radar-item.radar-new { border-color: rgba(37, 99, 235, 0.45); }
[data-theme="dark"] .radar-item.radar-new { border-color: rgba(96, 165, 250, 0.45); }
.radar-item-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.radar-item-meta { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.radar-date { font-size: 11.5px; font-weight: 600; color: var(--muted); font-variant-numeric: tabular-nums; }
.radar-type.rt-new { color: #15803d; border-color: rgba(21, 128, 61, 0.4); }
.radar-type.rt-price { color: #b45309; border-color: rgba(180, 83, 9, 0.4); }
.radar-type.rt-score { color: #2563eb; border-color: rgba(37, 99, 235, 0.4); }
.radar-type.rt-free { color: #0d9488; border-color: rgba(13, 148, 136, 0.4); }
.radar-type.rt-upcoming { color: #7c3aed; border-color: rgba(124, 58, 237, 0.4); }
[data-theme="dark"] .radar-type.rt-new { color: #4ade80; }
[data-theme="dark"] .radar-type.rt-price { color: #fbbf24; }
[data-theme="dark"] .radar-type.rt-score { color: #60a5fa; }
[data-theme="dark"] .radar-type.rt-free { color: #2dd4bf; }
[data-theme="dark"] .radar-type.rt-upcoming { color: #a78bfa; }
.radar-newchip { color: var(--focus); border-color: var(--focus); }
.radar-title { margin: 8px 0 0; font-size: 14.5px; font-weight: 600; }
.radar-note { margin: 4px 0 0; font-size: 13px; color: var(--muted); }
.radar-acts { margin-top: 10px; gap: 12px; flex-wrap: wrap; }
.radar-star.on { color: var(--focus); }
.radar-foot { margin-top: 16px; }
@media (max-width: 680px) {
  .radar-item-head { flex-direction: column; align-items: flex-start; }
  .panel-btns { justify-content: flex-start; }
}

/* ==========================================================
   v0.26 · Minimal welcome + shared-element morph transition
   ========================================================== */

:root {
  --welcome-bg: #f7f7f8;
  --welcome-glow-a: rgba(37, 99, 235, 0.19);
  --welcome-glow-b: rgba(124, 58, 237, 0.13);
  --welcome-button: rgba(255, 255, 255, 0.72);
}

[data-theme="dark"] {
  --welcome-bg: #0f1013;
  --welcome-glow-a: rgba(96, 165, 250, 0.2);
  --welcome-glow-b: rgba(167, 139, 250, 0.15);
  --welcome-button: rgba(27, 29, 35, 0.76);
}

[data-theme="sepia"] {
  --welcome-bg: #f1e5cd;
  --welcome-glow-a: rgba(163, 88, 55, 0.17);
  --welcome-glow-b: rgba(122, 77, 32, 0.13);
  --welcome-button: rgba(253, 246, 230, 0.76);
}

body.welcome-active,
body.welcome-leaving { overflow: hidden; }

.welcome {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  min-height: 100dvh;
  overflow: hidden;
  color: var(--text);
  background: var(--welcome-bg);
  isolation: isolate;
  transition: background-color 0.42s ease, opacity 0.42s ease;
}

body.welcome-active .welcome,
body.welcome-leaving .welcome { display: grid; place-items: center; }

body.welcome-active:not(.welcome-leaving) .site-header {
  opacity: 0;
  pointer-events: none;
}

.site-header {
  transition: opacity 0.3s ease, transform 0.5s cubic-bezier(.22, 1, .36, 1), background-color 0.35s ease;
}

body.welcome-leaving:not(.welcome-header-ready) .site-header {
  opacity: 0;
  transform: translateY(-16px);
  pointer-events: none;
}

body.welcome-header-ready .site-header {
  opacity: 1;
  transform: translateY(0);
}

/* Programmatic focus announces the destination after the morph without drawing
   the browser's default rectangle around a non-interactive heading. */
.view h1[tabindex="-1"]:focus,
.view h2[tabindex="-1"]:focus { outline: none; }

.welcome-stage {
  position: relative;
  z-index: 2;
  width: min(900px, calc(100% - 40px));
  padding: clamp(26px, 5vw, 56px) 0;
  text-align: center;
}

.welcome-brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: clamp(14px, 2vw, 22px);
  color: var(--text);
  transform-origin: center;
  animation: welcomeBrandIn 0.9s cubic-bezier(.16, 1, .3, 1) both;
}

.welcome-logo {
  width: clamp(70px, 9vw, 108px);
  height: clamp(70px, 9vw, 108px);
  flex: none;
  filter: drop-shadow(0 18px 28px rgba(37, 99, 235, 0.13));
}

.welcome-needle {
  transform-box: fill-box;
  transform-origin: center;
  animation: welcomeNeedle 4.2s ease-in-out 1s infinite alternate;
}

.welcome-wordmark {
  font-size: clamp(54px, 9vw, 104px);
  line-height: 0.94;
  font-weight: 700;
  letter-spacing: -0.072em;
  padding-right: 0.07em;
  background: linear-gradient(105deg, var(--text) 48%, var(--focus) 132%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.welcome-value {
  max-width: 760px;
  margin: clamp(26px, 4vw, 42px) auto clamp(30px, 5vw, 52px);
  color: var(--muted);
  font-size: clamp(20px, 3.2vw, 34px);
  line-height: 1.22;
  font-weight: 500;
  letter-spacing: -0.035em;
  text-wrap: balance;
  animation: welcomeValueIn 0.8s 0.22s cubic-bezier(.16, 1, .3, 1) both;
}

.welcome-menu {
  width: min(700px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.welcome-action,
.welcome-morph-clone.welcome-action {
  min-height: 68px;
  border: 1px solid color-mix(in srgb, var(--border-strong) 74%, transparent);
  border-radius: 18px;
  padding: 15px 18px 15px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  background: var(--welcome-button);
  color: var(--text);
  box-shadow: 0 16px 46px rgba(20, 24, 33, 0.055), inset 0 1px rgba(255, 255, 255, 0.34);
  backdrop-filter: blur(18px) saturate(125%);
  -webkit-backdrop-filter: blur(18px) saturate(125%);
  font: inherit;
  font-size: clamp(15px, 1.8vw, 17px);
  font-weight: 600;
  letter-spacing: -0.015em;
  text-align: left;
  cursor: pointer;
  will-change: transform, opacity;
  transition: border-color 0.22s ease, box-shadow 0.22s ease, background-color 0.22s ease, transform 0.22s ease;
}

.welcome-action:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--focus) 55%, var(--border));
  box-shadow: 0 20px 55px color-mix(in srgb, var(--focus) 14%, transparent), inset 0 1px rgba(255, 255, 255, 0.42);
}

.welcome-action:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 4px;
}

.welcome-arrow {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
  flex: none;
  color: var(--focus);
  background: color-mix(in srgb, var(--focus) 10%, transparent);
  transition: transform 0.22s ease, background-color 0.22s ease;
}

.welcome-action:hover .welcome-arrow { transform: translate(2px, -2px); background: color-mix(in srgb, var(--focus) 17%, transparent); }

.welcome-action:nth-child(1) { animation: welcomeFromLeft 0.8s 0.4s cubic-bezier(.16, 1, .3, 1) both; }
.welcome-action:nth-child(2) { animation: welcomeFromRight 0.8s 0.5s cubic-bezier(.16, 1, .3, 1) both; }
.welcome-action:nth-child(3) { animation: welcomeFromLeft 0.8s 0.6s cubic-bezier(.16, 1, .3, 1) both; }
.welcome-action:nth-child(4) { animation: welcomeFromRight 0.8s 0.7s cubic-bezier(.16, 1, .3, 1) both; }

.welcome-orb {
  position: absolute;
  z-index: 0;
  width: min(62vw, 760px);
  aspect-ratio: 1;
  border-radius: 50%;
  filter: blur(20px);
  opacity: 0.9;
  pointer-events: none;
  animation: welcomeOrb 8s ease-in-out infinite alternate;
  transition: opacity 0.35s ease;
}

.welcome-orb-a { left: -24vw; top: -35vh; background: radial-gradient(circle, var(--welcome-glow-a), transparent 67%); }
.welcome-orb-b { right: -26vw; bottom: -39vh; background: radial-gradient(circle, var(--welcome-glow-b), transparent 68%); animation-delay: -4s; }

body.welcome-leaving .welcome {
  background-color: transparent;
  pointer-events: none;
  animation: welcomeLayerOut 0.24s 0.78s ease-out both;
}

body.welcome-leaving .welcome-value,
body.welcome-leaving .welcome-orb { opacity: 0; }

body.welcome-leaving #welcome .welcome-brand,
body.welcome-leaving #welcome .welcome-action { opacity: 0 !important; }

.welcome-morph-clone {
  position: fixed !important;
  z-index: 130;
  margin: 0 !important;
  pointer-events: none !important;
  transform-origin: top left;
  overflow: hidden;
}

.welcome-morph-clone.welcome-brand {
  justify-content: flex-start;
  text-align: left;
}

body.app-reveal .view:not([hidden]) > * {
  animation: appEdgeFromBottom 0.72s 0.14s cubic-bezier(.16, 1, .3, 1) both;
}

body.app-reveal .view:not([hidden]) > :nth-child(3n + 1) {
  animation-name: appEdgeFromLeft;
  animation-delay: 0.08s;
}

body.app-reveal .view:not([hidden]) > :nth-child(3n + 2) {
  animation-name: appEdgeFromRight;
  animation-delay: 0.16s;
}

body.app-reveal .view:not([hidden]) > :nth-child(3n) { animation-delay: 0.24s; }

@keyframes welcomeBrandIn {
  from { opacity: 0; transform: translateY(20px) scale(0.94); filter: blur(8px); }
  to { opacity: 1; transform: translateY(0) scale(1); filter: blur(0); }
}

@keyframes welcomeValueIn {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes welcomeFromLeft {
  from { opacity: 0; transform: translate3d(-105vw, 16px, 0) rotate(-3deg); }
  to { opacity: 1; transform: translate3d(0, 0, 0) rotate(0); }
}

@keyframes welcomeFromRight {
  from { opacity: 0; transform: translate3d(105vw, 16px, 0) rotate(3deg); }
  to { opacity: 1; transform: translate3d(0, 0, 0) rotate(0); }
}

@keyframes welcomeNeedle {
  from { transform: rotate(-7deg); }
  to { transform: rotate(8deg); }
}

@keyframes welcomeOrb {
  from { transform: translate3d(-2%, -2%, 0) scale(0.96); }
  to { transform: translate3d(4%, 5%, 0) scale(1.08); }
}

@keyframes welcomeLayerOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

@keyframes appEdgeFromLeft {
  from { opacity: 0; transform: translate3d(-52px, 0, 0); }
  to { opacity: 1; transform: translate3d(0, 0, 0); }
}

@keyframes appEdgeFromRight {
  from { opacity: 0; transform: translate3d(52px, 0, 0); }
  to { opacity: 1; transform: translate3d(0, 0, 0); }
}

@keyframes appEdgeFromBottom {
  from { opacity: 0; transform: translate3d(0, 38px, 0); }
  to { opacity: 1; transform: translate3d(0, 0, 0); }
}

@media (max-width: 680px) {
  .welcome-stage { width: min(520px, calc(100% - 28px)); padding-block: 20px; }
  .welcome-brand { flex-direction: column; gap: 10px; }
  .welcome-logo { width: 66px; height: 66px; }
  .welcome-wordmark { font-size: clamp(50px, 17vw, 74px); }
  .welcome-value { max-width: 430px; margin-top: 20px; margin-bottom: 26px; font-size: clamp(19px, 5.8vw, 26px); }
  .welcome-menu { grid-template-columns: 1fr; gap: 9px; }
  .welcome-action, .welcome-morph-clone.welcome-action { min-height: 58px; border-radius: 15px; padding: 12px 14px 12px 17px; }
  .welcome-arrow { width: 30px; height: 30px; }
}

@media (max-height: 680px) and (min-width: 681px) {
  .welcome-logo { width: 66px; height: 66px; }
  .welcome-wordmark { font-size: 64px; }
  .welcome-value { margin-block: 20px 26px; font-size: 22px; }
  .welcome-action, .welcome-morph-clone.welcome-action { min-height: 56px; }
}

@media (prefers-reduced-motion: reduce) {
  .welcome-brand,
  .welcome-value,
  .welcome-action,
  .welcome-needle,
  .welcome-orb,
  body.app-reveal .view:not([hidden]) > * {
    animation: none !important;
    transition: none !important;
  }
}

/* ==========================================================
   v0.26 · Standardized AI marks and official logotypes
   ========================================================== */

.ai-brand-mark {
  --ai-logo-size: 1.28em;
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.48em;
  vertical-align: -0.16em;
  color: inherit;
  line-height: 1.15;
}

.ai-brand-icon-frame {
  width: var(--ai-logo-size);
  height: var(--ai-logo-size);
  min-width: var(--ai-logo-size);
  display: inline-grid;
  place-items: center;
  flex: none;
  overflow: hidden;
  border-radius: 24%;
  line-height: 1;
}

.ai-brand-icon-frame.ai-brand-icon-sm { --ai-logo-size: 1.18em; }

.ai-brand-icon {
  display: block;
  width: 88%;
  height: 88%;
  object-fit: contain;
}

.ai-brand-label {
  min-width: 0;
  display: inline-block;
  font-weight: inherit;
  letter-spacing: -0.018em;
  text-wrap: balance;
}

.ai-brand-wordmark {
  display: block;
  width: auto;
  max-width: min(7em, 112px);
  height: 0.92em;
  object-fit: contain;
  object-position: left center;
}

.ai-brand-provider {
  max-width: 4.8em;
  height: 0.7em;
  margin-left: 0.12em;
  opacity: 0.62;
}

.ai-font-openai { font-family: "OpenAI Sans", "Inter", system-ui, sans-serif; letter-spacing: -0.028em; }
.ai-font-meta { font-family: "Optimistic Display", "Inter", system-ui, sans-serif; letter-spacing: -0.025em; }
.ai-font-nvidia { font-family: "DIN Pro", "Arial Narrow", "Inter", sans-serif; letter-spacing: 0.01em; }

[data-theme="dark"] .ai-brand-mono .ai-brand-icon { filter: invert(1); }

/* Wordmark SVGs are monochrome artwork rendered as external images, so their
   internal currentColor defaults to black. In dark mode the light equivalent
   is produced without recoloring the separate full-color product icon. */
[data-theme="dark"] .ai-brand-wordmark { filter: invert(1) brightness(1.08); }

[data-theme="sepia"] .ai-brand-mono .ai-brand-icon,
[data-theme="sepia"] .ai-brand-wordmark.ai-brand-mono { filter: sepia(.35) saturate(.65) brightness(.56); }

.model-check > span {
  min-width: 0;
  display: inline-flex !important;
  align-items: center;
  gap: 0.42em;
}

.model-check > span > .ai-brand-icon-frame { --ai-logo-size: 1.42em; }
.model-check > span > small { margin-left: -0.15em; }

.tab .ai-brand-mark,
.router-app .ai-brand-mark,
.compare-title .ai-brand-mark,
.panel-head .ai-brand-mark { --ai-logo-size: 1.22em; }

.db-hit .ai-brand-icon-frame,
.radar-title .ai-brand-icon-frame { --ai-logo-size: 1.32em; margin-right: 0.12em; }

.radar-title { display: flex; align-items: flex-start; gap: 0.35em; }

.chain-node-model .ai-brand-mark { --ai-logo-size: 1.15em; }

.chain-selected-brand,
.doctor-selected-brand {
  display: inline-flex;
  align-items: center;
}

.chain-selected-brand .ai-brand-label,
.chain-selected-brand .ai-brand-wordmark,
.doctor-selected-brand .ai-brand-label,
.doctor-selected-brand .ai-brand-wordmark { display: none; }

.brand-comparison {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.38em;
}

.brand-comparison > span:not(.ai-brand-mark) {
  color: var(--muted);
  font-size: 0.58em;
  font-weight: 500;
}

.guide-head h1 > .ai-brand-mark { --ai-logo-size: 1.1em; }

.ai-brand-lockup { --ai-logo-size: 1.55em; gap: 0.58em; }
.ai-brand-lockup .ai-brand-wordmark { height: 1.08em; max-width: 8.5em; }

@media (max-width: 480px) {
  .ai-brand-wordmark { max-width: 5.8em; }
  .model-check > span > small { display: none; }
  .chain-selected-brand { display: none; }
}


/* ============================================================ *
 *  v0.28 - Blind Arena                                          *
 * ============================================================ */
.arena-card { max-width: 820px; }
.arena-card textarea { margin-top: 12px; }
.arena-warn { margin-top: 14px; }
.arena-round { max-width: 980px; margin-top: 16px; }
.arena-panes { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; align-items: start; }
.arena-pane { padding: 16px; }
.arena-pane .arena-out { max-height: 380px; margin-top: 10px; }
.arena-winner { border-color: var(--focus); box-shadow: 0 10px 30px rgba(37, 99, 235, 0.1); }
[data-theme="dark"] .arena-winner { box-shadow: 0 10px 30px rgba(96, 165, 250, 0.12); }
.arena-vote { justify-content: center; margin-top: 14px; gap: 10px; flex-wrap: wrap; }
.arena-reveal { text-align: center; margin-top: 10px; }
.arena-board { max-width: 820px; margin-top: 16px; }
.arena-board-grid { display: grid; grid-template-columns: 44px 1fr auto auto; gap: 8px 14px; align-items: baseline; margin: 6px 0 10px; }
.arena-rank { font-weight: 700; color: var(--muted); font-size: 13px; }
.arena-name { font-weight: 600; font-size: 14px; }
.arena-elo { font-variant-numeric: tabular-nums; font-weight: 700; color: var(--focus); }
.arena-games { font-size: 12px; color: var(--muted); }
@media (max-width: 780px) {
  .arena-panes { grid-template-columns: 1fr; }
}