:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --text: #1c2430;
  --muted: #5d6b7a;
  --border: #d9e0e7;
  --accent: #0f6e8c;
  --accent-text: #ffffff;
  --danger: #b42318;
  --warn: #9a6700;
  --ok: #1a7f37;
  --info: #31597a;
  --chip-bg: #eef2f6;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11161c;
    --panel: #1a2129;
    --text: #e6ebf0;
    --muted: #98a6b5;
    --border: #2d3743;
    --accent: #3fa7c7;
    --accent-text: #0b1218;
    --danger: #ff7b72;
    --warn: #e3b341;
    --ok: #56d364;
    --info: #79b8e0;
    --chip-bg: #24303b;
    --shadow: none;
  }
}

* { box-sizing: border-box; }

/* The UI toggles visibility with the `hidden` attribute; this must win over component
   display rules (e.g. `.preview img`, `.progress-wrap`), which otherwise keep elements shown. */
[hidden] {
  display: none !important;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 "Segoe UI", system-ui, -apple-system, sans-serif;
}

h2 { font-size: 1.05rem; margin: 0 0 12px; }
h3 { font-size: 0.95rem; margin: 22px 0 8px; }
.muted { color: var(--muted); font-weight: normal; }

.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 12px 20px; background: var(--panel); border-bottom: 1px solid var(--border);
}
.brand-name { font-weight: 600; }
.version { color: var(--muted); margin-left: 8px; font-size: 0.85rem; }
.badge-experimental {
  font-size: 0.8rem; font-weight: 600; color: var(--warn);
  border: 1px solid currentColor; border-radius: 999px; padding: 2px 10px;
}

.layout {
  display: grid; grid-template-columns: minmax(300px, 420px) minmax(0, 1fr); gap: 16px;
  padding: 16px 20px; max-width: 1400px; margin: 0 auto;
}
@media (max-width: 860px) { .layout { grid-template-columns: minmax(0, 1fr); padding: 12px 16px; } }

.panel, .results {
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 16px; box-shadow: var(--shadow);
}
.results { max-width: 1400px; margin: 0 auto 24px; width: calc(100% - 40px); }
@media (max-width: 860px) { .results { width: calc(100% - 32px); } }

.tabs { display: flex; flex-wrap: wrap; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 12px; }
.tab {
  background: none; border: none; border-bottom: 2px solid transparent; color: var(--muted);
  padding: 8px 12px; font: inherit; cursor: pointer;
}
.tab.active { color: var(--text); border-bottom-color: var(--accent); font-weight: 600; }

.field { display: flex; flex-direction: column; gap: 4px; margin-bottom: 10px; font-size: 0.9rem; }
.field.narrow { width: 110px; }
.field input {
  font: inherit; padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px;
  background: var(--bg); color: var(--text); min-width: 0;
}
.check { display: flex; align-items: center; gap: 8px; margin: 8px 0; font-size: 0.9rem; }
.row { display: flex; align-items: flex-end; gap: 8px; flex-wrap: wrap; margin: 8px 0; }
.hint { color: var(--muted); font-size: 0.85rem; margin: 6px 0; }
.status-line { font-size: 0.85rem; color: var(--muted); min-height: 1.4em; }
.error { color: var(--danger); font-size: 0.9rem; white-space: pre-line; }

.btn {
  font: inherit; font-size: 0.9rem; padding: 7px 14px; border-radius: 6px; cursor: pointer;
  border: 1px solid var(--accent); background: var(--panel); color: var(--accent); text-decoration: none;
  display: inline-block;
}
.btn.primary { background: var(--accent); color: var(--accent-text); font-weight: 600; }
.btn.secondary { border-color: var(--border); color: var(--text); }
.btn.record { border-color: var(--danger); color: var(--danger); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn:focus-visible, .tab:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.actions { margin-top: 14px; }

.calibration { margin-top: 12px; border-top: 1px solid var(--border); padding-top: 10px; }
.calibration summary { cursor: pointer; font-size: 0.9rem; font-weight: 600; }
.calib-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 10px; margin-top: 8px; }

.preview {
  position: relative; background: #0b0f14; border-radius: 6px; min-height: 240px;
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.preview img, .preview canvas { display: block; max-width: 100%; max-height: 70vh; height: auto; }
.preview.picking img, .preview.picking canvas { cursor: crosshair; }
.placeholder { color: #9aa7b4; font-size: 0.9rem; padding: 24px; text-align: center; }
.markers { position: absolute; pointer-events: none; }
.marker {
  position: absolute; width: 14px; height: 14px; margin: -7px 0 0 -7px; border-radius: 50%;
  border: 2px solid #ffd60a; box-shadow: 0 0 0 1px #000;
}
.marker-line { position: absolute; height: 2px; background: #ffd60a; transform-origin: 0 50%; }

.progress-wrap { display: flex; align-items: center; gap: 10px; margin-top: 10px; font-size: 0.85rem; }
.progress-wrap progress { flex: 1; height: 10px; }

.results-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.exports { display: flex; gap: 8px; }
.disclaimer {
  border-left: 3px solid var(--warn); background: var(--chip-bg); padding: 8px 12px; font-size: 0.85rem; margin: 12px 0;
}
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 10px; }
.card { border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; }
.card .label { font-size: 0.8rem; color: var(--muted); }
.card .value { font-size: 1.4rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.card .unit { font-size: 0.85rem; color: var(--muted); margin-left: 4px; }
.card .note { font-size: 0.75rem; color: var(--muted); }

.grade { font-weight: 600; text-transform: capitalize; }
.grade-good { color: var(--ok); }
.grade-fair { color: var(--info); }
.grade-poor { color: var(--warn); }
.grade-insufficient { color: var(--danger); }

.warnings, .unavailable { list-style: none; padding: 0; margin: 0; font-size: 0.88rem; }
.warnings li, .unavailable li { padding: 6px 10px; border-left: 3px solid var(--border); margin-bottom: 6px; background: var(--chip-bg); }
.warnings li.sev-critical { border-left-color: var(--danger); }
.warnings li.sev-warning { border-left-color: var(--warn); }
.warnings li.sev-info { border-left-color: var(--info); }
.warnings code, .unavailable code { font-size: 0.8rem; }

/* minmax(0, 1fr): wide tables scroll inside their own box instead of widening the page on phones */
.tables { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 960px) { .tables { grid-template-columns: minmax(0, 1fr); } }
table { width: 100%; border-collapse: collapse; font-size: 0.86rem; display: block; overflow-x: auto; }
th, td { text-align: left; padding: 5px 8px; border-bottom: 1px solid var(--border); white-space: nowrap; }
td.num { text-align: right; font-variant-numeric: tabular-nums; }
th { color: var(--muted); font-weight: 600; }
.status-ok { color: var(--ok); }
.status-low_confidence { color: var(--warn); }
.status-unavailable { color: var(--muted); }
.legend, .meta { font-size: 0.8rem; color: var(--muted); margin-top: 14px; }

/* Account box in the top bar */
.topbar-right { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.user-box { display: inline-flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--muted); }
.btn.small { padding: 4px 10px; font-size: 0.8rem; }

/* Record on this device */
.device-preview {
  position: relative; background: #0b0f14; border-radius: 6px; min-height: 180px; margin: 8px 0;
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.device-preview video { display: block; width: 100%; max-height: 60vh; background: #000; }
.rec-timer {
  position: absolute; top: 8px; left: 8px; padding: 2px 8px; border-radius: 4px;
  background: rgba(180, 35, 24, 0.92); color: #fff; font-size: 0.85rem; font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.status-line.error { color: var(--danger); }

/* Sign-in page */
.login-wrap { max-width: 420px; margin: 40px auto; padding: 0 16px; }
.login-panel .btn { width: 100%; margin-top: 6px; }

/* Phones: larger touch targets; 16px inputs stop iOS zooming on focus */
@media (max-width: 600px) {
  .btn { padding: 10px 14px; }
  .btn.small { padding: 6px 10px; }
  .field input { font-size: 16px; }
  .topbar { padding: 10px 16px; }
  .results { padding: 12px; }
}