/* 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); }
}