:root {
  color-scheme: dark;
  --bg: #0a0f1c;
  --surface: #111827;
  --surface-2: #172033;
  --line: rgba(255, 255, 255, .105);
  --text: #f8fafc;
  --muted: #99a8bd;
  --accent: #64f0b0;
  --accent-strong: #2bdc91;
  --blue: #72a7ff;
  --danger: #ff818f;
  --warning: #ffd166;
  --radius: 22px;
  --shadow: 0 24px 80px rgba(0, 0, 0, .25);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: radial-gradient(circle at 75% -10%, #17304a 0, transparent 33rem), var(--bg); color: var(--text); }
button, select, input { font: inherit; }
button, label, select { -webkit-tap-highlight-color: transparent; }
button { border: 0; }
a { color: inherit; }
.hidden { display: none !important; }

.site-header { position: sticky; z-index: 20; top: 0; border-bottom: 1px solid var(--line); background: rgba(10, 15, 28, .78); backdrop-filter: blur(18px); }
.header-inner { width: min(1200px, calc(100% - 36px)); height: 70px; margin: auto; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; font-size: 1.03rem; letter-spacing: -.015em; }
.brand strong { color: var(--accent); }
.brand-mark { display: grid; grid-template-columns: repeat(2, 8px); gap: 3px; padding: 6px; border: 1px solid var(--line); border-radius: 8px; }
.brand-mark i { width: 8px; height: 8px; border-radius: 2px; background: #ef4444; }
.brand-mark i:nth-child(2) { background: #facc15; }.brand-mark i:nth-child(3) { background: #22c55e; }.brand-mark i:nth-child(4) { background: #60a5fa; }
.privacy-badge { color: var(--muted); font-size: .78rem; padding: 8px 11px; border: 1px solid var(--line); border-radius: 999px; }
.privacy-badge span { color: var(--accent); margin-right: 5px; }

main { width: min(1200px, calc(100% - 36px)); margin: auto; }
.hero { padding: 86px 0 64px; max-width: 900px; }
.eyebrow { margin: 0 0 12px; color: var(--accent); font-size: .72rem; line-height: 1.2; letter-spacing: .17em; text-transform: uppercase; font-weight: 800; }
.hero h1 { margin: 0; font-size: clamp(2.6rem, 7vw, 5.9rem); line-height: .98; letter-spacing: -.062em; font-weight: 750; }
.hero h1 span { color: transparent; background: linear-gradient(90deg, #64f0b0, #72a7ff, #f9a8d4); background-clip: text; -webkit-background-clip: text; }
.hero > p:not(.eyebrow) { max-width: 720px; color: var(--muted); font-size: clamp(1rem, 2vw, 1.2rem); line-height: 1.7; }
.hero-facts { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 26px; }
.hero-facts span { padding: 9px 12px; border: 1px solid var(--line); border-radius: 999px; color: #cbd5e1; font-size: .78rem; background: rgba(255,255,255,.025); }

.notice { margin: -22px 0 38px; padding: 14px 16px; border: 1px solid rgba(255,209,102,.32); border-radius: 12px; color: #ffe6a8; background: rgba(255,209,102,.08); }
.workspace { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 18px; align-items: start; }
.panel { border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(145deg, rgba(255,255,255,.025), transparent 55%), var(--surface); box-shadow: var(--shadow); padding: 25px; }
.panel-heading { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 22px; }
.step { flex: 0 0 auto; color: var(--accent); font: 700 .72rem/1 ui-monospace, monospace; border: 1px solid rgba(100,240,176,.25); border-radius: 8px; padding: 8px; }
h2, h3, p { overflow-wrap: anywhere; }
.panel h2, .panel h3 { margin: 0; letter-spacing: -.025em; }
.panel-heading p, .panel h3 + p, .camera-heading p, .collection-top p { color: var(--muted); margin: 5px 0 0; font-size: .85rem; line-height: 1.5; }

.file-drop { position: relative; min-height: 116px; display: flex; align-items: center; justify-content: center; gap: 14px; padding: 20px; border: 1px dashed rgba(114,167,255,.42); border-radius: 16px; background: rgba(114,167,255,.045); cursor: pointer; text-align: left; transition: .18s ease; }
.file-drop:hover, .file-drop.dragging { border-color: var(--accent); background: rgba(100,240,176,.06); transform: translateY(-1px); }
.file-drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.file-drop strong, .file-drop small { display: block; }
.file-drop small { color: var(--muted); margin-top: 4px; }
.drop-icon { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px; background: rgba(114,167,255,.13); color: var(--blue); font-size: 1.4rem; }
.file-drop.compact { min-height: 92px; margin-top: 18px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 17px; }
.form-grid label { color: #dce6f3; font-size: .82rem; font-weight: 650; }
.form-grid small { display: block; min-height: 2.5em; color: var(--muted); font-weight: 400; line-height: 1.4; margin-top: 6px; }
select { width: 100%; margin-top: 8px; padding: 12px 36px 12px 12px; border: 1px solid var(--line); border-radius: 10px; color: var(--text); background: var(--surface-2); }
.metrics { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; overflow: hidden; margin: 18px 0; border: 1px solid var(--line); border-radius: 14px; background: var(--line); }
.metrics div { padding: 13px; background: var(--surface-2); }
.metrics div:last-child { grid-column: span 2; }
.metrics span, .metrics strong { display: block; }
.metrics span { color: var(--muted); font-size: .69rem; text-transform: uppercase; letter-spacing: .08em; }
.metrics strong { margin-top: 5px; font: 650 .96rem/1.2 ui-monospace, SFMono-Regular, monospace; }

.button { min-height: 43px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 10px 15px; border-radius: 10px; cursor: pointer; font-weight: 700; font-size: .82rem; transition: transform .16s ease, opacity .16s ease, background .16s ease; }
.button:hover:not(:disabled) { transform: translateY(-1px); }
.button:disabled { cursor: not-allowed; opacity: .38; }
.button.primary { color: #07150f; background: var(--accent); }
.button.primary:hover:not(:disabled) { background: #83f5c2; }
.button.secondary { color: #dce8f7; border: 1px solid var(--line); background: var(--surface-2); }
.button.ghost { color: var(--muted); border: 1px solid var(--line); background: transparent; }
.wide { width: 100%; justify-content: space-between; padding-inline: 18px; }
.button-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.status-line { min-height: 1.4em; margin: 12px 0 0; color: var(--muted); font-size: .78rem; }
.status-line.error { color: var(--danger); }
.status-line.success { color: var(--accent); }

.canvas-stage { position: relative; display: grid; place-items: center; min-height: 470px; overflow: auto; border-radius: 16px; background-color: #e9ece8; background-image: linear-gradient(45deg,#dfe3df 25%,transparent 25%),linear-gradient(-45deg,#dfe3df 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#dfe3df 75%),linear-gradient(-45deg,transparent 75%,#dfe3df 75%); background-size: 24px 24px; background-position: 0 0,0 12px,12px -12px,-12px 0; }
.canvas-stage canvas { display: block; max-width: 100%; height: auto; image-rendering: pixelated; box-shadow: 0 12px 40px rgba(0,0,0,.22); }
.canvas-stage.empty canvas { display: none; }
.empty-state { max-width: 250px; color: #566171; text-align: center; }
.empty-state span { font-size: 3rem; }.empty-state p { font-size: .84rem; line-height: 1.5; }
.frame-nav { display: grid; grid-template-columns: 44px 1fr 44px; gap: 10px; align-items: center; margin-top: 15px; text-align: center; }
.frame-nav strong, .frame-nav small { display: block; }.frame-nav small { color: var(--muted); margin-top: 3px; }
.icon-button { width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 10px; color: var(--text); background: var(--surface-2); cursor: pointer; }
.icon-button:disabled { opacity: .3; cursor: default; }
.info-list { margin-top: 16px; padding: 13px; border-radius: 12px; background: rgba(100,240,176,.05); color: #c9d5e4; font: .76rem/1.6 ui-monospace, monospace; }

.decode-section { margin-top: 100px; }
.section-heading { max-width: 700px; margin-bottom: 26px; }
.section-heading h2 { margin: 0; font-size: clamp(2rem, 4vw, 3.2rem); letter-spacing: -.045em; }
.section-heading > p:last-child { color: var(--muted); }
.decode-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 18px; }
.camera-heading, .collection-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.camera-actions { flex: 0 0 auto; display: flex; gap: 7px; }
.camera-view { position: relative; overflow: hidden; margin-top: 18px; border-radius: 15px; background: #05080d; }
.camera-view video { display: block; width: 100%; height: auto; max-height: 62vh; object-fit: contain; }
.camera-view canvas { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.scan-status { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 11px; margin-top: 16px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 13px; background: rgba(255,255,255,.025); }
.status-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); box-shadow: 0 0 0 5px rgba(153,168,189,.09); }
.scan-status.active .status-dot { background: var(--warning); animation: pulse 1.2s infinite; }.scan-status.success .status-dot { background: var(--accent); }
.scan-status strong, .scan-status small { display: block; }.scan-status small { margin-top: 3px; color: var(--muted); }
#scanConfidence { color: var(--accent); font: 700 .8rem/1 ui-monospace, monospace; }
@keyframes pulse { 50% { box-shadow: 0 0 0 9px rgba(255,209,102,0); } }
.collection-panel { margin-top: 18px; }
.progress-track { height: 6px; overflow: hidden; margin-top: 19px; border-radius: 999px; background: rgba(255,255,255,.07); }
.progress-track span { display: block; width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg,var(--accent),var(--blue)); transition: width .25s ease; }
.result-card { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 17px; margin-top: 20px; padding: 18px; border: 1px solid rgba(100,240,176,.22); border-radius: 16px; background: rgba(100,240,176,.055); }
.success-icon { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; color: #06150e; background: var(--accent); font-weight: 900; }
.result-copy h3 { margin: 0; }.result-copy p:not(.eyebrow) { margin: 4px 0; color: var(--muted); font-size: .82rem; }
.result-copy code { display: block; max-width: 620px; overflow: hidden; color: #b8c5d6; font-size: .69rem; text-overflow: ellipsis; white-space: nowrap; }

.debug-section { margin: 24px 0 80px; border: 1px solid var(--line); border-radius: 17px; background: rgba(255,255,255,.02); }
.switch-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 17px 19px; cursor: pointer; }
.switch-row strong, .switch-row small { display: block; }.switch-row small { color: var(--muted); margin-top: 3px; }
.switch-row input { width: 44px; height: 24px; accent-color: var(--accent-strong); }
.debug-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; padding: 0 19px 19px; border-top: 1px solid var(--line); }
.debug-panel > div:last-child { grid-column: span 2; }
.debug-panel h3 { font-size: .82rem; color: #cbd5e1; }
.debug-panel pre { max-height: 320px; overflow: auto; padding: 14px; border-radius: 12px; background: #070b12; color: #9fc4b2; font: .72rem/1.5 ui-monospace, monospace; white-space: pre-wrap; }
.debug-canvas-placeholder { min-height: 180px; display: grid; place-items: center; overflow: auto; border-radius: 12px; color: var(--muted); background: #070b12; font-size: .78rem; }
.debug-canvas-placeholder canvas { max-width: 100%; height: auto; image-rendering: pixelated; }
.debug-palette { display: grid; grid-template-columns: repeat(4, 1fr); gap: 7px; }
.debug-color { min-height: 50px; display: flex; align-items: end; padding: 5px; border-radius: 8px; color: white; font: 700 .67rem/1 ui-monospace, monospace; text-shadow: 0 1px 3px black; }

.docs-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 80px; }
.docs-links a { display: flex; flex-direction: column; gap: 8px; padding: 18px; border: 1px solid var(--line); border-radius: 15px; text-decoration: none; background: var(--surface); }
.docs-links a:hover { border-color: rgba(100,240,176,.35); }.docs-links span { color: var(--muted); font-size: .78rem; }
footer { padding: 26px 18px; border-top: 1px solid var(--line); color: var(--muted); text-align: center; font-size: .75rem; }

@media (max-width: 900px) {
  .workspace, .decode-grid { grid-template-columns: 1fr; }
  .output-panel { order: 2; }
  .canvas-stage { min-height: 360px; }
  .result-card { grid-template-columns: auto 1fr; }.result-card .button { grid-column: span 2; }
}

@media (max-width: 600px) {
  .header-inner, main { width: min(100% - 24px, 1200px); }
  .header-inner { height: 62px; }.privacy-badge { font-size: 0; }.privacy-badge span { font-size: .8rem; margin: 0; }
  .hero { padding: 58px 0 44px; }.hero h1 { font-size: clamp(2.7rem, 13vw, 4rem); }
  .panel { padding: 18px; border-radius: 17px; }
  .form-grid { grid-template-columns: 1fr; }.form-grid small { min-height: auto; }
  .canvas-stage { min-height: 300px; }
  .button-row .button { flex: 1 1 42%; }
  .decode-section { margin-top: 70px; }
  .camera-heading, .collection-top { flex-direction: column; }.camera-actions { width: 100%; }.camera-actions .button { flex: 1; }
  .result-card { grid-template-columns: 1fr; text-align: center; }.success-icon { margin: auto; }.result-card .button { grid-column: auto; }
  .debug-panel { grid-template-columns: 1fr; }.debug-panel > div:last-child { grid-column: auto; }
  .docs-links { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; } }