:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #090909;
  color: #f6f6f6;
  --surface: #151515;
  --surface-2: #202020;
  --border: #333;
  --muted: #a8a8a8;
  --accent: #fff;
  --success: #2ac769;
  --danger: #ff405c;
  --warning: #ffcc45;
}
* { box-sizing: border-box; }
html { min-height: 100%; background: #090909; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at 50% -20%, #2b2b2b 0, #090909 45%); }
button { font: inherit; }
button:focus-visible { outline: 3px solid #fff; outline-offset: 3px; }
.app-shell { width: min(100%, 620px); margin: 0 auto; padding: max(20px, env(safe-area-inset-top)) 16px max(24px, env(safe-area-inset-bottom)); }
.app-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.header-actions { display: flex; align-items: center; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }
.install-button { min-height: 34px; border: 1px solid var(--border); border-radius: 999px; padding: 6px 10px; background: var(--surface-2); color: #fff; cursor: pointer; font-size: .78rem; font-weight: 800; }
.brand-block { min-width: 0; }
.brand-logo { display: block; width: clamp(150px, 42vw, 220px); height: auto; margin: 0 0 10px; object-fit: contain; }
h1 { margin: 0; font-size: clamp(1.55rem, 6vw, 2.15rem); line-height: 1.05; }
.badge { flex: 0 0 auto; padding: 7px 11px; border: 1px solid var(--border); border-radius: 999px; color: var(--muted); font-size: .78rem; font-weight: 700; }
.badge[data-state="success"] { color: var(--success); border-color: color-mix(in srgb, var(--success) 45%, #333); }
.badge[data-state="error"] { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 45%, #333); }
.badge[data-state="busy"] { color: var(--warning); }
.scanner-card[hidden] { display: none !important; }
.scanner-card, .result-card { overflow: hidden; border: 1px solid var(--border); border-radius: 22px; background: color-mix(in srgb, var(--surface) 94%, transparent); box-shadow: 0 20px 60px rgba(0,0,0,.35); }
.video-wrap { position: relative; aspect-ratio: 4 / 5; max-height: 62vh; background: #050505; overflow: hidden; }
#qrVideo { display: block; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity .2s ease; }
.video-wrap.is-running #qrVideo { opacity: 1; }
.camera-placeholder { position: absolute; inset: 0; display: grid; place-content: center; justify-items: center; gap: 12px; padding: 30px; text-align: center; color: var(--muted); }
.camera-placeholder img { opacity: .9; filter: invert(1); }
.camera-placeholder strong { color: #fff; font-size: 1.3rem; }
.scan-frame { position: absolute; z-index: 2; left: 50%; top: 50%; width: min(68%, 310px); aspect-ratio: 1; transform: translate(-50%, -50%); pointer-events: none; border: 2px solid rgba(255,255,255,.28); border-radius: 20px; opacity: 0; }
.is-running .scan-frame { opacity: 1; }
.scanner-actions, .result-actions { display: grid; grid-template-columns: 1fr; gap: 10px; padding: 16px; }
.button { min-height: 54px; border: 0; border-radius: 14px; padding: 13px 18px; cursor: pointer; font-weight: 800; transition: transform .12s ease, opacity .12s ease; }
.button:active { transform: scale(.985); }
.button:disabled { opacity: .55; cursor: wait; }
.button-primary { background: #fff; color: #080808; }
.button-secondary { background: var(--surface-2); color: #fff; border: 1px solid var(--border); }
.button-danger { background: var(--danger); color: #fff; }
.hint { margin: 0; padding: 0 18px 18px; color: var(--muted); font-size: .88rem; text-align: center; }
.result-card { margin-top: 16px; padding: 22px 18px 16px; scroll-margin-top: max(16px, env(safe-area-inset-top)); }
.scanner-card[hidden] + .result-card { margin-top: 0; }
.result-card.is-valid { border-color: color-mix(in srgb, var(--success) 55%, #333); }
.result-card.is-invalid { border-color: color-mix(in srgb, var(--danger) 55%, #333); }
.result-card.is-redeemed { border-color: var(--success); }
.status-icon { display: grid; place-items: center; width: 48px; height: 48px; margin-bottom: 14px; border-radius: 50%; background: var(--surface-2); font-size: 1.4rem; font-weight: 900; }
.is-valid .status-icon, .is-redeemed .status-icon { background: var(--success); color: #06190e; }
.is-invalid .status-icon { background: var(--danger); color: #fff; }
.result-kicker { margin: 0 0 3px; color: var(--muted); font-size: .82rem; font-weight: 700; }
h2 { margin: 0; font-size: 1.6rem; }
.voucher-details { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 20px 0 6px; }
.voucher-details > div { min-width: 0; padding: 13px; border-radius: 13px; background: var(--surface-2); }
dt { color: var(--muted); font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
dd { overflow-wrap: anywhere; margin: 5px 0 0; font-size: 1.03rem; font-weight: 800; }
.result-message { margin: 18px 0 0; padding: 13px 14px; border-radius: 12px; background: var(--surface-2); line-height: 1.45; }
.result-actions { padding: 18px 0 0; }
@media (min-width: 480px) {
  .scanner-actions { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .scanner-actions .button-primary:first-child:last-child { grid-column: 1 / -1; }
  .result-actions { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

@media (max-width: 430px) {
  .app-header { align-items: flex-start; }
  .brand-logo { width: min(58vw, 200px); }
  .header-actions { max-width: 42%; }
}