/* CoCAD website. The layout follows the Portfolio website (cgeosoft).
 * The tokens follow src/ui.rs, so the site looks like the app. */

@font-face { font-family: "Plus Jakarta Sans"; font-style: normal; font-weight: 400 800; font-display: swap; src: url("assets/fonts/plus-jakarta-sans-latin.woff2") format("woff2"); }
@font-face { font-family: "Sansation"; font-style: normal; font-weight: 700; font-display: swap; src: url("assets/fonts/sansation-700-latin.woff2") format("woff2"); }
@font-face { font-family: "JetBrains Mono"; font-style: normal; font-weight: 400 600; font-display: swap; src: url("assets/fonts/jetbrains-mono-latin.woff2") format("woff2"); }

:root {
  --canvas: #0f1114;
  --widget: #15171b;
  --card: #1c1f24;
  --input: #262a31;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #e8eaed;
  --muted: #a0a6af;
  --dim: #8d939c;
  --accent: #ff9300;
  --accent-rgb: 255, 147, 0;
  --accent-600: #f08a00;
  --accent-bright: #ffc069;
  --on-accent: #1a1204;
  --good: #3fb950;
  --good-rgb: 63, 185, 80;
  --danger: #ff6b6b;
  --radius: 12px;
  --radius-sm: 8px;
  --display: "Sansation", "Plus Jakarta Sans", system-ui, sans-serif;
  --body: "Plus Jakarta Sans", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --gutter: clamp(16px, 4vw, 40px);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { color-scheme: dark; scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; background: var(--canvas); color: var(--text); font: 400 16px/1.6 var(--body); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration-color: rgba(var(--accent-rgb), 0.5); text-underline-offset: 3px; }
a:hover { color: var(--accent-bright); }
h1, h2, h3 { margin: 0; line-height: 1.08; }
button { font-family: inherit; }
[hidden] { display: none !important; }
::selection { background: rgba(var(--accent-rgb), 0.35); }
:focus-visible { outline: 2px solid rgba(var(--accent-rgb), 0.7); outline-offset: 2px; border-radius: 6px; }
.mono { font-family: var(--mono); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 var(--gutter); }
code.inline { padding: 1px 5px; border: 1px solid var(--border); border-radius: 4px; background: var(--card); color: var(--accent-bright); font: 500 0.86em var(--mono); }

/* App vocabulary: card, uppercase mono label, pill, dot */
.card { border: 1px solid var(--border); border-radius: var(--radius); background: var(--widget); transition: border-color 0.2s; }
.label { display: inline-flex; align-items: center; gap: 8px; margin: 0; color: var(--muted); font: 600 12px var(--mono); text-transform: uppercase; letter-spacing: 0.1em; }
.pill { padding: 2px 8px; border: 1px solid var(--border-strong); border-radius: 6px; color: var(--muted); font: 600 10px var(--mono); text-transform: uppercase; letter-spacing: 0.08em; white-space: nowrap; }
.pill-accent { border-color: rgba(var(--accent-rgb), 0.5); background: rgba(var(--accent-rgb), 0.1); color: var(--accent-bright); }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.18); }
.section { padding-top: clamp(56px, 8vw, 100px); padding-bottom: clamp(56px, 8vw, 100px); }
.big-title { margin: 14px 0 36px; font: 700 clamp(2.1rem, 4.6vw, 3.6rem)/1.05 var(--display); letter-spacing: -0.02em; }
.big-title em { font-style: normal; color: var(--accent); }
.lede { max-width: 40em; margin: -18px 0 32px; color: var(--muted); font-size: 18px; }

/* Scroll reveal: one short rise. boot.js sets .js, so no JS means no hiding. */
.js .reveal { opacity: 0; transform: translateY(14px); }
.js .reveal.is-in { opacity: 1; transform: none; transition: opacity 0.6s ease var(--delay, 0ms), transform 0.7s var(--ease) var(--delay, 0ms), border-color 0.2s; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 20; background: rgba(15, 17, 20, 0.8); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--border); }
.nav-container { display: flex; align-items: center; gap: 28px; height: 60px; }
.brand-link { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-name { font: 700 18px var(--display); white-space: nowrap; }
.main-nav { display: flex; gap: 4px; margin-left: auto; }
.main-nav a { padding: 6px 12px; border-radius: var(--radius-sm); color: var(--muted); font: 600 12px var(--mono); text-transform: uppercase; letter-spacing: 0.08em; text-decoration: none; white-space: nowrap; transition: color 0.15s, background 0.15s; }
.main-nav a:hover { color: var(--text); background: rgba(255, 255, 255, 0.04); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 8px 16px; border: 1px solid var(--border-strong); border-radius: var(--radius-sm); background: rgba(255, 255, 255, 0.03); color: var(--text); font: 700 12px var(--mono); text-transform: uppercase; letter-spacing: 0.08em; text-decoration: none; white-space: nowrap; cursor: pointer; transition: background 0.15s, border-color 0.15s, transform 0.15s, box-shadow 0.2s; }
.btn:hover { color: var(--text); border-color: rgba(var(--accent-rgb), 0.4); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); border-color: transparent; color: var(--on-accent); box-shadow: 0 8px 24px -10px rgba(var(--accent-rgb), 0.6); }
.btn-primary:hover { background: var(--accent-bright); color: var(--on-accent); border-color: transparent; }
.btn-soft { border-color: rgba(var(--accent-rgb), 0.45); background: rgba(var(--accent-rgb), 0.1); color: var(--accent-bright); }
.btn-soft:hover { background: rgba(var(--accent-rgb), 0.2); color: var(--accent-bright); }
.btn-big { padding: 16px 26px; border-radius: var(--radius); border-color: transparent; background: var(--accent); color: var(--on-accent); font-size: 14px; box-shadow: 0 14px 40px -14px rgba(var(--accent-rgb), 0.7); }
.btn-big:hover { background: var(--accent-bright); color: var(--on-accent); border-color: transparent; box-shadow: 0 18px 44px -12px rgba(var(--accent-rgb), 0.8); }
.btn-ghost { padding: 16px 22px; border-radius: var(--radius); font-size: 14px; background: rgba(15, 17, 20, 0.5); }

/* Hero */
.hero { position: relative; display: flex; align-items: center; min-height: min(calc(100vh - 61px), 820px); overflow: hidden; isolation: isolate; background: radial-gradient(700px 520px at 72% 46%, rgba(var(--accent-rgb), 0.08), transparent 70%); }
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -2; opacity: 0; transition: opacity 0.9s ease; cursor: grab; touch-action: pan-y; }
.hero-canvas:active { cursor: grabbing; }
.hero.is-ready .hero-canvas { opacity: 1; }
.hero-fallback { display: none; }
.hero-scrim { position: absolute; inset: 0; z-index: -1; pointer-events: none; background: linear-gradient(90deg, var(--canvas) 30%, rgba(15, 17, 20, 0.7) 44%, rgba(15, 17, 20, 0) 58%), linear-gradient(0deg, var(--canvas), rgba(15, 17, 20, 0) 14%); }
.hero-inner { padding-top: clamp(40px, 7vh, 72px); padding-bottom: clamp(56px, 9vh, 88px); pointer-events: none; }
.hero-copy { max-width: 640px; pointer-events: auto; }
.hero-new { display: inline-flex; align-items: center; gap: 10px; color: var(--muted); font: 600 12px var(--mono); letter-spacing: 0.06em; text-decoration: none; }
.hero-new:hover { color: var(--text); }
.hero-headline { margin-top: 22px; font: 700 clamp(2.6rem, 5vw, 4.2rem)/1.04 var(--display); letter-spacing: -0.02em; }
.hero-headline em { font-style: normal; color: var(--accent); }
.hero-lede { max-width: 33em; margin: 24px 0 34px; color: #bcc2ca; font-size: 18px; }
.hero-buttons { display: flex; flex-wrap: wrap; align-items: stretch; gap: 12px; }
.hero-alt { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; margin: 20px 0 0; color: var(--dim); font: 500 12px var(--mono); }
.hero-alt .sep { opacity: 0.5; }
.os-switch { padding: 3px 9px; border: 1px solid var(--border); border-radius: 6px; background: none; color: var(--muted); font: inherit; cursor: pointer; transition: color 0.15s, border-color 0.15s; }
.os-switch:hover { color: var(--text); border-color: var(--border-strong); }
.os-switch.active { border-color: rgba(var(--accent-rgb), 0.5); background: rgba(var(--accent-rgb), 0.1); color: var(--accent-bright); }
.hero-trace { position: absolute; right: max(var(--gutter), calc((100vw - 1180px) / 2 + var(--gutter))); bottom: 26px; display: grid; gap: 6px; width: 340px; padding: 12px 14px; border: 1px solid var(--border-strong); border-radius: var(--radius-sm); background: rgba(21, 23, 27, 0.86); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); opacity: 0; transform: translateY(8px); transition: opacity 0.6s 0.3s, transform 0.6s var(--ease) 0.3s; pointer-events: none; }
.hero.is-ready .hero-trace { opacity: 1; transform: none; }
.hero-stages { display: flex; gap: 14px; margin: 0; padding: 0; list-style: none; color: var(--dim); font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.1em; }
.hero-stages li { display: inline-flex; align-items: center; gap: 6px; transition: color 0.3s; }
.hero-stages li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--border-strong); transition: background 0.3s, box-shadow 0.3s; }
.hero-stages li.is-done::before { background: var(--good); }
.hero-stages li.is-on { color: var(--accent-bright); }
.hero-stages li.is-on::before { background: var(--accent); box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.2); }
.hero-call { overflow: hidden; color: var(--text); font: 500 12.5px var(--mono); white-space: nowrap; text-overflow: ellipsis; }
.hero-result { min-height: 18px; color: var(--muted); font-size: 12px; }

/* The loop demo */
.loop { border-top: 1px solid var(--border); background: radial-gradient(900px 480px at 30% 24%, rgba(var(--accent-rgb), 0.06), transparent 70%); }
.loop-container { max-width: 1320px; }
.loop-head { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 8px 48px; align-items: end; margin-bottom: 26px; }
.loop-head .label { grid-column: 1 / -1; }
.loop-head .big-title { margin: 6px 0 0; font-size: clamp(2rem, 3.8vw, 3.1rem); }
.loop-head .lede { margin: 0; font-size: 16px; }
.loop-stages { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; margin: 0 0 14px; padding: 0; list-style: none; }
.stage { position: relative; display: grid; grid-template-columns: auto 1fr; column-gap: 10px; align-items: center; width: 100%; height: 100%; padding: 11px 13px 13px; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--widget); color: var(--muted); text-align: left; cursor: pointer; transition: border-color 0.25s, background 0.25s, color 0.25s; }
.stage:hover { border-color: rgba(var(--accent-rgb), 0.45); color: var(--text); }
.stage-num { grid-row: span 2; display: grid; place-items: center; width: 26px; height: 26px; border: 1px solid var(--border-strong); border-radius: 50%; font-size: 11px; font-weight: 600; transition: background 0.25s, border-color 0.25s, color 0.25s, box-shadow 0.25s; }
.stage-name { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; }
.stage-meta { min-height: 15px; overflow: hidden; color: var(--dim); font-size: 10.5px; white-space: nowrap; text-overflow: ellipsis; }
.stage-fill { position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform 0.5s var(--ease); }
.stage.is-done .stage-num { border-color: rgba(var(--good-rgb), 0.4); background: rgba(var(--good-rgb), 0.1); color: var(--good); }
.stage.is-on { border-color: rgba(var(--accent-rgb), 0.6); background: rgba(var(--accent-rgb), 0.08); color: var(--text); }
.stage.is-on .stage-num { border-color: var(--accent); background: var(--accent); color: var(--on-accent); box-shadow: 0 0 0 4px rgba(var(--accent-rgb), 0.14); }
.stage.is-on .stage-fill { transform: scaleX(1); }
.loop-grid { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr); gap: 14px; }
.viewport { display: flex; flex-direction: column; min-width: 0; height: clamp(500px, 74vh, 700px); overflow: hidden; }
.view-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 8px 10px 8px 16px; border-bottom: 1px solid var(--border); }
.view-file { overflow: hidden; color: var(--dim); font-size: 12px; white-space: nowrap; text-overflow: ellipsis; }
.view-group, .view-presets { display: flex; gap: 2px; }
.view-btn { padding: 5px 11px; border: 0; border-radius: 6px; background: none; color: var(--muted); font: 600 12px var(--body); cursor: pointer; transition: background 0.15s, color 0.15s; }
.view-btn:hover { color: var(--text); background: rgba(255, 255, 255, 0.06); }
.view-btn[aria-pressed="true"] { background: var(--accent); color: var(--on-accent); }
.view-stage { position: relative; flex: 1; min-height: 0; background: linear-gradient(180deg, #21252c, #0f1114 75%); }
.view-stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; cursor: grab; touch-action: pan-y; }
.view-stage canvas:active { cursor: grabbing; }
.view-fallback { display: none; width: 100%; height: 100%; object-fit: cover; object-position: left top; }
.view-presets { position: absolute; right: 12px; bottom: 12px; padding: 3px; border-radius: var(--radius-sm); background: rgba(21, 23, 27, 0.82); }
.layer-bar { position: absolute; left: 12px; bottom: 12px; display: grid; gap: 4px; width: min(280px, 50%); padding: 8px 12px; border-radius: var(--radius-sm); background: rgba(21, 23, 27, 0.82); color: var(--muted); font-size: 11px; }
.view-status { display: flex; flex-wrap: wrap; gap: 2px 18px; padding: 8px 16px; border-top: 1px solid var(--border); color: var(--dim); font-size: 11.5px; }
.status-ready { display: inline-flex; align-items: center; gap: 7px; color: var(--text); }
.dot-ok { width: 8px; height: 8px; border-radius: 50%; background: var(--good); }

.side { display: flex; flex-direction: column; min-width: 0; height: clamp(500px, 74vh, 700px); overflow: hidden; }
.side-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; margin: 10px; padding: 4px; border-radius: var(--radius-sm); background: var(--card); }
.side-tab { padding: 7px 10px; border: 0; border-radius: 6px; background: none; color: var(--muted); font: 600 13px var(--body); cursor: pointer; transition: background 0.2s, color 0.2s; }
.side-tab:hover { color: var(--text); }
.side-tab[aria-selected="true"] { background: var(--accent); color: var(--on-accent); }
.side-panel { display: flex; flex: 1; flex-direction: column; min-height: 0; padding: 4px 14px 12px; overflow-y: auto; scrollbar-width: thin; scrollbar-color: var(--border-strong) transparent; }
.prompts { display: grid; gap: 6px; }
.prompt { padding: 8px 11px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--card); color: var(--muted); font-size: 13px; line-height: 1.35; text-align: left; cursor: pointer; transition: border-color 0.15s, color 0.15s, background 0.15s; }
.prompt:hover { border-color: rgba(var(--accent-rgb), 0.45); color: var(--text); }
.prompt[aria-pressed="true"] { border-color: rgba(var(--accent-rgb), 0.6); background: rgba(var(--accent-rgb), 0.08); color: var(--text); }
.log { display: flex; flex: 1; flex-direction: column; gap: 8px; min-height: 120px; margin-top: 12px; padding-top: 12px; overflow-y: auto; border-top: 1px solid var(--border); scrollbar-width: thin; scrollbar-color: var(--border-strong) transparent; }
.log > * { flex: none; animation: rise 0.35s var(--ease) backwards; }
@keyframes rise { from { opacity: 0; transform: translateY(6px); } }
.msg-user { align-self: flex-end; max-width: 90%; margin: 0; padding: 7px 11px; border-radius: 10px 10px 2px 10px; background: var(--input); font-size: 13.5px; }
.msg-agent { margin: 0; color: var(--text); font-size: 13.5px; }
.tool-row { padding: 7px 10px; border: 1px solid var(--border); border-left: 2px solid var(--good); border-radius: 6px; background: var(--canvas); transition: border-color 0.25s; }
.tool-row.is-busy { border-left-color: var(--accent); }
.tool-head { display: flex; flex-wrap: wrap; gap: 2px 8px; align-items: baseline; }
.tool-name { color: var(--accent-bright); font-size: 12px; font-weight: 600; }
.tool-args { overflow-wrap: anywhere; color: var(--muted); font: 500 11px var(--mono); }
.tool-out { margin-top: 2px; color: var(--dim); font-size: 11.5px; animation: rise 0.3s var(--ease) backwards; }
.param-note { flex: none; margin: 12px 0 0; color: var(--dim); font-size: 10.5px; line-height: 1.5; }

/* Customizer tab, drawn like the app panel */
.model-tabs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.chip { padding: 5px 10px; border: 1px solid var(--border); border-radius: 6px; background: none; color: var(--muted); font: 600 12px var(--body); cursor: pointer; transition: border-color 0.15s, color 0.15s; }
.chip:hover { color: var(--text); border-color: var(--border-strong); }
.chip[aria-pressed="true"] { border-color: rgba(var(--accent-rgb), 0.5); background: rgba(var(--accent-rgb), 0.1); color: var(--accent-bright); }
.param-group { margin-bottom: 10px; padding: 12px 14px; border-radius: var(--radius-sm); background: var(--card); }
.param-head { margin: 0 0 10px; color: var(--dim); font: 600 11px var(--mono); text-transform: uppercase; letter-spacing: 0.1em; }
.param { padding: 6px 0; }
.param-top { display: flex; align-items: center; gap: 8px; min-height: 28px; }
.param-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); opacity: 0; transform: scale(0); transition: opacity 0.2s, transform 0.2s; }
.param.is-edited .param-dot { opacity: 1; transform: none; }
.param:not(.is-edited) .param-dot { width: 0; margin-right: -8px; }
.param-name { flex: 1; font-size: 14px; }
.param-value { min-width: 44px; padding: 3px 8px; border-radius: 6px; background: var(--input); font-size: 12.5px; text-align: center; }
.param-select { padding: 4px 8px; border: 0; border-radius: 6px; background: var(--input); color: var(--text); font-size: 12.5px; }
input[type="range"] { -webkit-appearance: none; appearance: none; display: block; width: 100%; height: 18px; margin: 4px 0 0; background: none; cursor: pointer; }
input[type="range"]::-webkit-slider-runnable-track { height: 4px; border-radius: 2px; background: linear-gradient(90deg, rgba(var(--accent-rgb), 0.7) var(--fill, 0%), var(--input) var(--fill, 0%)); }
input[type="range"]::-moz-range-track { height: 4px; border-radius: 2px; background: linear-gradient(90deg, rgba(var(--accent-rgb), 0.7) var(--fill, 0%), var(--input) var(--fill, 0%)); }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 16px; height: 16px; margin-top: -6px; border: 2px solid #cfd4da; border-radius: 50%; background: var(--card); }
input[type="range"]::-moz-range-thumb { width: 12px; height: 12px; border: 2px solid #cfd4da; border-radius: 50%; background: var(--card); }
input[type="range"]:disabled { opacity: 0.35; cursor: not-allowed; }
.layer-bar input[type="range"] { --fill: 0%; }
.switch { -webkit-appearance: none; appearance: none; position: relative; width: 38px; height: 21px; margin: 0; border-radius: 11px; background: var(--input); cursor: pointer; transition: background 0.2s; }
.switch::after { content: ""; position: absolute; top: 3px; left: 3px; width: 15px; height: 15px; border-radius: 50%; background: #fff; transition: transform 0.2s var(--ease); }
.switch:checked { background: var(--accent); }
.switch:checked::after { transform: translateX(17px); }

/* Rule cards */
.rule-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.rule { padding: 22px; }
.rule:hover, .ledger-list .card:hover { border-color: rgba(var(--accent-rgb), 0.3); }
.rule-tag { margin: 0 0 8px; color: var(--accent); font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.1em; }
.rule-value { margin: 0 0 14px; font-size: clamp(1.25rem, 2vw, 1.5rem); font-weight: 600; white-space: nowrap; }
.rule h3 { margin-bottom: 8px; font: 700 19px/1.25 var(--display); }
.rule p:last-child { margin: 0; color: var(--muted); font-size: 14px; }

/* MCP */
.mcp { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: linear-gradient(180deg, rgba(var(--accent-rgb), 0.035), transparent 60%); }
.mcp-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 14px; align-items: start; }
.mcp-setup { display: grid; gap: 14px; min-width: 0; }
.code-card { min-width: 0; overflow: hidden; }
.code-title { margin: 0; padding: 8px 16px; border-bottom: 1px solid var(--border); color: var(--dim); font-size: 11.5px; }
.code-card pre { margin: 0; padding: 14px 16px; overflow-x: auto; color: var(--text); font: 500 13px/1.6 var(--mono); scrollbar-width: thin; }
.tools { padding: 6px 18px; }
.tools table { width: 100%; border-collapse: collapse; }
.tools tr + tr { border-top: 1px solid var(--border); }
.tools th { padding: 10px 14px 10px 0; color: var(--accent-bright); font-size: 12.5px; font-weight: 600; text-align: left; vertical-align: top; white-space: nowrap; }
.tools td { padding: 10px 0; color: var(--muted); font-size: 14px; }
.guard-list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin: 26px 0 0; padding: 0; color: var(--muted); font-size: 14px; list-style: none; }
.guard-list b { display: block; color: var(--text); font-weight: 600; }
.shot { margin: 0; }
.shot figcaption { margin-top: 8px; color: var(--dim); font-size: 11.5px; }
.zoom { display: block; width: 100%; padding: 0; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius); background: none; cursor: zoom-in; transition: border-color 0.2s; }
.zoom img { transition: transform 0.5s var(--ease); }
.zoom:hover { border-color: rgba(var(--accent-rgb), 0.4); }
.zoom:hover img { transform: scale(1.025); }

/* Tour */
.tour { padding-top: clamp(56px, 8vw, 100px); padding-bottom: 16px; }
.tour-head { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 8px 24px; margin-bottom: 22px; }
.tour-head .big-title { margin-bottom: 0; }
.tour-head p:last-child { margin: 0; color: var(--muted); }
.tour-tabs { position: relative; display: flex; gap: 4px; margin-bottom: 16px; padding: 4px; overflow-x: auto; scrollbar-width: none; border: 1px solid var(--border); border-radius: var(--radius); background: var(--widget); }
.tour-tabs::-webkit-scrollbar { display: none; }
.tour-tab { position: relative; z-index: 1; flex: 1 0 auto; padding: 9px 14px; border: 0; border-radius: var(--radius-sm); background: none; color: var(--muted); font: 600 12px var(--mono); text-transform: uppercase; letter-spacing: 0.08em; white-space: nowrap; cursor: pointer; transition: color 0.2s; }
.tour-tab:hover { color: var(--text); }
.tour-tab[aria-selected="true"] { color: var(--accent-bright); }
.tour-ink { position: absolute; top: 4px; left: 0; bottom: 4px; border: 1px solid rgba(var(--accent-rgb), 0.45); border-radius: var(--radius-sm); background: rgba(var(--accent-rgb), 0.1); transition: transform 0.45s var(--ease), width 0.45s var(--ease); }
.tour-frame { overflow: hidden; border: 1px solid var(--border-strong); border-radius: 14px; background: var(--widget); box-shadow: 0 40px 100px -40px rgba(0, 0, 0, 0.9); }
.tour-frame img { width: 100%; aspect-ratio: 16 / 10.4; object-fit: cover; object-position: top; transition: opacity 0.25s ease; }
.tour-frame img.is-swap { opacity: 0.3; }
.tour-text { max-width: 60em; min-height: 3.4em; margin: 16px auto 0; color: var(--muted); font-size: 13px; text-align: center; }

/* Photo */
.gallery { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-bottom: 14px; }

/* Features */
.ledger-list { counter-reset: row; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 0; padding: 0; list-style: none; }
.ledger-list li { counter-increment: row; padding: 20px 22px 22px; }
.ledger-list li::before { content: counter(row, decimal-leading-zero); display: block; margin-bottom: 12px; color: var(--accent); font: 600 12px var(--mono); letter-spacing: 0.1em; }
.ledger-list h3 { margin-bottom: 6px; font: 700 18px/1.25 var(--display); }
.ledger-list p { margin: 0; color: var(--muted); font-size: 14px; }

/* Downloads */
.dl-rows { padding: 6px 22px; }
.dl-row { display: grid; grid-template-columns: 1fr 1.5fr 170px 130px; gap: 18px; align-items: center; padding: 18px 0; border-bottom: 1px solid var(--border); }
.dl-row:last-child { border-bottom: 0; }
.dl-os { display: inline-flex; align-items: center; gap: 12px; font: 700 18px var(--display); }
.dl-row.is-detected .dl-os::after { content: "your system"; padding: 2px 8px; border: 1px solid rgba(var(--accent-rgb), 0.5); border-radius: 6px; background: rgba(var(--accent-rgb), 0.1); color: var(--accent-bright); font: 600 10px var(--mono); text-transform: uppercase; letter-spacing: 0.08em; white-space: nowrap; }
.dl-req { color: var(--muted); font-size: 14px; }
.dl-alt { color: var(--muted); font: 600 12px var(--mono); }
.gate { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 12px 28px; align-items: baseline; margin-top: 14px; padding: 20px 24px; }
.gate-text { margin: 0; }
.caption { margin: 18px 0 0; color: var(--dim); font-size: 12px; text-align: center; }

/* FAQ */
.faq-list { padding: 4px 24px; }
.faq details + details { border-top: 1px solid var(--border); }
.faq summary { display: flex; justify-content: space-between; gap: 24px; padding: 18px 0; font: 600 17px var(--body); cursor: pointer; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font: 500 18px var(--mono); transition: transform 0.2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { max-width: 46em; margin: -4px 0 20px; color: var(--muted); }

/* Footer */
.site-footer { border-top: 1px solid var(--border); background: var(--widget); }
.status-bar { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 24px; padding-top: 14px; padding-bottom: 14px; color: var(--dim); font-size: 12px; }
.status-bar p { margin: 0; }
.status-bar nav { display: flex; flex-wrap: wrap; gap: 18px; }
.status-bar a { text-decoration: none; }

/* Lightbox */
.lightbox { max-width: 96vw; max-height: 96vh; padding: 0; border: 0; border-radius: var(--radius); background: none; cursor: zoom-out; }
.lightbox::backdrop { background: rgba(5, 6, 8, 0.9); backdrop-filter: blur(6px); }
.lightbox img { width: auto; max-height: 94vh; }

/* Consent box */
.consent { position: fixed; left: 16px; right: 16px; bottom: 16px; z-index: 50; max-width: 480px; padding: 18px 20px; border: 1px solid var(--border-strong); border-radius: var(--radius); background: rgba(21, 23, 27, 0.92); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px); color: var(--text); font-size: 14px; box-shadow: 0 12px 40px -10px rgba(0, 0, 0, 0.6); visibility: hidden; opacity: 0; transform: translateY(12px); transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s; }
.consent.visible { visibility: visible; opacity: 1; transform: none; }
.consent-title { font: 600 12px var(--mono); text-transform: uppercase; letter-spacing: 0.1em; }
.consent p { margin: 6px 0 14px; color: var(--muted); }
.consent .consent-state { color: var(--dim); font-size: 12px; }
.consent-actions { display: flex; justify-content: flex-end; gap: 8px; }
.link-btn { padding: 0; border: 0; background: none; color: inherit; font: inherit; cursor: pointer; }
.link-btn:hover { color: var(--accent-bright); }

/* Privacy page */
.legal { max-width: 860px; }
.legal .big-title { margin-bottom: 10px; }
.legal-date { margin: 0 0 32px; color: var(--dim); font-size: 12px; }
.legal section { padding: 24px 0; border-top: 1px solid var(--border); }
.legal h2 { margin-bottom: 12px; font: 700 21px var(--display); }
.legal p, .legal li { color: var(--muted); }
.legal ul { margin: 0; padding-left: 20px; }
.legal-table { margin: 14px 0; overflow-x: auto; }
.legal-table table { width: 100%; border-collapse: collapse; font-size: 14px; }
.legal-table th { color: var(--text); font: 600 11px var(--mono); text-align: left; text-transform: uppercase; letter-spacing: 0.08em; }
.legal-table th, .legal-table td { padding: 10px 14px; color: var(--muted); vertical-align: top; }
.legal-table tr + tr td, .legal-table tbody tr td { border-top: 1px solid var(--border); }
.legal-nav { margin-left: auto; }

/* No WebGL2: real images replace the live views */
.no-gl .hero-canvas, .no-gl .hero-trace, .no-gl .view-stage canvas, .no-gl .view-presets, .no-gl .view-bar, .no-gl .view-status, .no-gl .side, .no-gl .loop-stages { display: none; }
.no-gl .hero-fallback { position: absolute; z-index: -2; top: 50%; right: 0; display: block; width: 56%; transform: translateY(-50%); }
.no-gl .view-fallback { display: block; }
.no-gl .loop-grid { grid-template-columns: 1fr; }
.no-gl .viewport { height: auto; }

@media (max-width: 1080px) {
  .main-nav a:nth-child(-n+5) { display: none; }
  .rule-grid, .guard-list { grid-template-columns: 1fr 1fr; }
  .loop-grid, .mcp-grid { grid-template-columns: minmax(0, 1fr); }
  .viewport { height: 560px; }
  .side { height: 520px; }
  .gallery { grid-template-columns: 1fr 1fr; }
  .ledger-list { grid-template-columns: 1fr 1fr; }
  .loop-head { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  .hero { flex-direction: column; align-items: stretch; min-height: 0; }
  .hero-canvas { position: relative; order: 2; height: 340px; }
  .hero-inner { padding-bottom: 8px; }
  .hero-scrim { display: none; }
  .hero-trace { position: relative; order: 3; right: auto; bottom: auto; width: auto; margin: 0 var(--gutter) 28px; }
  .no-gl .hero-fallback { position: relative; order: 2; width: 100%; transform: none; }
  .dl-row { grid-template-columns: 1fr auto auto; }
  .dl-req { display: none; }
  .gate { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .nav-container { gap: 12px; }
  .main-nav { display: none; }
  .nav-actions { margin-left: auto; }
  .loop-stages { grid-template-columns: 1fr 1fr; }
  .stage-meta { display: none; }
  .stage-num { grid-row: auto; }
  .rule-grid, .guard-list, .ledger-list { grid-template-columns: 1fr; }
  .viewport { height: 480px; }
  .tools th { white-space: normal; overflow-wrap: anywhere; max-width: 150px; }
  .dl-row { grid-template-columns: 1fr; gap: 8px; }
  .view-status span:nth-child(4) { display: none; }
  .layer-bar { right: 12px; bottom: 58px; left: 12px; width: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .log > *, .tool-out { animation: none; }
  .js .reveal { opacity: 1; transform: none; }
  .btn, .zoom img, .tour-ink, .stage-fill, .hero-canvas, .hero-trace, .consent { transition: none; }
}