:root {
  color-scheme: light;
  --bg: #eef3f7;
  --surface: #fff;
  --ink: #102a43;
  --muted: #52667a;
  --primary: #0b6e4f;
  --primary-dark: #07523c;
  --border: #c6d3df;
  --warning: #8a4b08;
  --warning-bg: #fff3d6;
  --danger: #a61b1b;
  --danger-bg: #fff0f0;
  --success-bg: #e7f6ef;
  --focus: #ffbf47;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); min-height: 100vh; }
button, input { font: inherit; }
.app-shell { width: min(100%, 560px); min-height: 100vh; margin: 0 auto; background: var(--bg); }
.topbar { display: flex; justify-content: space-between; gap: 16px; padding: max(22px, env(safe-area-inset-top)) 20px 18px; background: var(--ink); color: #fff; }
.topbar h1 { margin: 3px 0; font-size: clamp(1.45rem, 7vw, 2rem); }
.eyebrow { margin: 0; font-size: .78rem; font-weight: 800; letter-spacing: .12em; }
.site-name { margin: 0; opacity: .86; }
.indicators { display: flex; flex-direction: column; align-items: flex-end; gap: 7px; }
.badge { display: inline-block; padding: 6px 9px; border-radius: 999px; background: #dcefe8; color: #104c3b; font-size: .72rem; font-weight: 800; white-space: nowrap; }
.badge-offline, .badge-warn { background: var(--warning-bg); color: var(--warning); }
main { padding: 18px 14px 40px; }
.notice { margin-bottom: 14px; padding: 13px; border: 2px solid #e7b65b; border-radius: 10px; background: var(--warning-bg); color: #633705; font-weight: 650; }
.attendance-card { padding: 22px 18px; border: 1px solid var(--border); border-radius: 16px; background: var(--surface); box-shadow: 0 4px 16px rgb(16 42 67 / 9%); }
.status-panel { min-height: 145px; display: grid; place-content: center; text-align: center; padding: 20px 8px; }
.status-icon { font-size: 2.35rem; line-height: 1; }
.status-title { margin: 10px 0 2px; font-size: 1.45rem; }
.status-detail { margin: 5px 0 0; color: var(--muted); line-height: 1.45; }
.status-time { margin: 7px 0 0; font-size: 2.1rem; font-weight: 800; }
.status-success { background: var(--success-bg); border-radius: 12px; }
.status-pending { background: var(--warning-bg); border-radius: 12px; }
.status-failed { background: var(--danger-bg); border-radius: 12px; }
.capture-panel { border-top: 1px solid var(--border); }
.capture-row { display: grid; grid-template-columns: 36px minmax(0, 1fr); gap: 8px 10px; align-items: center; padding: 16px 0; border-bottom: 1px solid var(--border); }
.step-icon { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: var(--ink); color: #fff; font-weight: 800; }
.step-copy { display: flex; min-width: 0; flex-direction: column; gap: 3px; }
.step-copy span { color: var(--muted); font-size: .9rem; }
.capture-row .button { grid-column: 2; }
.preview-wrap { margin: 16px 0 0; text-align: center; }
.preview-wrap img { display: block; width: min(100%, 320px); max-height: 340px; margin: auto; object-fit: cover; border: 2px solid var(--border); border-radius: 12px; }
.preview-wrap figcaption { margin-top: 7px; color: var(--muted); font-size: .85rem; }
.actions { display: grid; gap: 10px; margin-top: 18px; }
.button { display: inline-flex; min-height: 52px; align-items: center; justify-content: center; padding: 12px 18px; border: 2px solid transparent; border-radius: 10px; font-weight: 800; text-align: center; cursor: pointer; }
.button-primary { background: var(--primary); color: #fff; font-size: 1.08rem; }
.button-primary:hover { background: var(--primary-dark); }
.button-secondary { border-color: var(--ink); background: #fff; color: var(--ink); }
.button:disabled { cursor: not-allowed; opacity: .52; }
.button:focus-visible, input:focus-visible { outline: 4px solid var(--focus); outline-offset: 2px; }
.privacy-note { margin: 16px 4px; color: var(--muted); font-size: .88rem; line-height: 1.4; }
.privacy-note p { margin: 4px 0; }
.camera-dialog { width: min(calc(100% - 24px), 520px); padding: 16px; border: 0; border-radius: 16px; background: var(--surface); color: var(--ink); }
.camera-dialog::backdrop { background: rgb(0 0 0 / 78%); }
.camera-header h2 { margin: 0; }
.camera-header p { margin: 5px 0 14px; color: var(--muted); }
.camera-dialog video { display: block; width: 100%; max-height: 65vh; border-radius: 12px; background: #000; object-fit: cover; transform: scaleX(-1); }
.camera-actions { display: grid; grid-template-columns: 1fr 1.5fr; gap: 10px; margin-top: 14px; }
.camera-error { padding: 12px; border-radius: 8px; background: var(--danger-bg); color: var(--danger); font-weight: 700; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
[hidden] { display: none !important; }
@media (min-width: 480px) { .capture-row { grid-template-columns: 36px minmax(0, 1fr) auto; } .capture-row .button { grid-column: 3; grid-row: 1; min-width: 130px; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; } }