:root {
  --bg: #0d0f13;
  --bg-2: #12161c;
  --card: rgba(30, 34, 41, 0.72);
  --card-solid: #1b1f25;
  --edge: rgba(255, 255, 255, 0.07);
  --edge-strong: rgba(255, 255, 255, 0.13);
  --text: #e4e8eb;
  --muted: #8a9096;
  --faint: #5c636b;
  --accent: #3caae6;
  --ok: #5ac878;
  --warn: #e6aa28;
  --bad: #eb4646;
  --unknown: #8c8c8c;
  --level: #3ca05a;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35), 0 1px 0 rgba(255, 255, 255, 0.03) inset;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body { margin: 0; min-height: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 var(--font);
  -webkit-font-smoothing: antialiased;
  font-variant-numeric: tabular-nums;
}

.backdrop {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(900px 600px at 12% -10%, rgba(60, 170, 230, 0.13), transparent 60%),
    radial-gradient(700px 500px at 100% 0%, rgba(90, 200, 120, 0.07), transparent 60%),
    linear-gradient(180deg, var(--bg-2), var(--bg));
}

h1 { margin: 0; font-weight: 650; letter-spacing: -0.01em; }

[hidden] { display: none !important; }

svg { fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.glass, .card {
  background: var(--card);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
}

.screen { animation: fade-in 0.45s var(--ease) both; }

.start {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 16px;
}

.start-card {
  width: min(560px, 100%);
  padding: 32px;
  display: grid;
  gap: 22px;
}

.brand { display: flex; gap: 14px; align-items: center; }

.brand h1 { font-size: 22px; }

.logo {
  width: 46px;
  height: 46px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: var(--accent);
  background: linear-gradient(145deg, rgba(60, 170, 230, 0.22), rgba(60, 170, 230, 0.05));
  border: 1px solid rgba(60, 170, 230, 0.3);
}

.logo svg { width: 28px; height: 28px; stroke-width: 2.2; }

.logo circle { fill: currentColor; animation: blink 5s infinite; transform-origin: 16px 16px; }

.kicker { margin: 2px 0 0; color: var(--muted); font-size: 13px; }

.lede { margin: 0; color: #c3c9cf; }

.privacy {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: rgba(90, 200, 120, 0.08);
  border: 1px solid rgba(90, 200, 120, 0.22);
}

.privacy svg { width: 22px; height: 22px; flex: none; color: var(--ok); margin-top: 1px; }

.privacy p { margin: 0; color: #c7e8d0; font-size: 13.5px; }

.privacy strong { color: #e7f7ec; }

.stages { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }

.stages li { display: flex; gap: 12px; align-items: center; color: var(--faint); transition: color 0.3s; }

.stages li[data-state="active"], .stages li[data-state="done"], .stages li[data-state="warn"] { color: var(--text); }

.stages li[data-state="error"] { color: #f3a0a0; }

.stage-icon {
  width: 22px;
  height: 22px;
  flex: none;
  border-radius: 50%;
  border: 2px solid var(--edge-strong);
  position: relative;
  transition: border-color 0.3s, background-color 0.3s;
}

[data-state="active"] > .stage-icon {
  border-color: rgba(60, 170, 230, 0.25);
  border-top-color: var(--accent);
  animation: spin 0.8s linear infinite;
}

[data-state="done"] > .stage-icon { border-color: var(--ok); background: var(--ok); animation: pop 0.35s var(--ease); }

[data-state="warn"] > .stage-icon { border-color: var(--warn); background: var(--warn); }

[data-state="error"] > .stage-icon { border-color: var(--bad); background: var(--bad); }

[data-state="done"] > .stage-icon::after, [data-state="warn"] > .stage-icon::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid #0d0f13;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

[data-state="error"] > .stage-icon::after {
  content: "×";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: #0d0f13;
  font-weight: 800;
  font-size: 15px;
  line-height: 1;
}

.stage-body { flex: 1; display: grid; gap: 6px; min-width: 0; }

.stage-row { display: flex; justify-content: space-between; gap: 12px; font-size: 13.5px; }

.stage-note { color: var(--muted); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.bar { height: 4px; border-radius: 4px; background: rgba(255, 255, 255, 0.06); overflow: hidden; position: relative; }

.bar i {
  position: absolute;
  inset: 0;
  transform-origin: left;
  transform: scaleX(var(--progress, 0));
  background: linear-gradient(90deg, var(--accent), #7fd0ff);
  border-radius: inherit;
  transition: transform 0.35s var(--ease), background 0.3s;
}

[data-state="active"] .bar::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.22), transparent);
  animation: shimmer 1.3s infinite;
}

[data-state="done"] .bar i { background: var(--ok); }

[data-state="warn"] .bar i { background: var(--warn); }

.actions { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 11px;
  border: 1px solid var(--edge-strong);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font: 600 14px/1 var(--font);
  cursor: pointer;
  transition: transform 0.15s var(--ease), background-color 0.2s, border-color 0.2s, opacity 0.3s, box-shadow 0.2s;
  user-select: none;
}

.btn svg { width: 18px; height: 18px; }

.btn:hover:not(:disabled):not([aria-disabled="true"]) { background: rgba(255, 255, 255, 0.08); border-color: rgba(255, 255, 255, 0.2); }

.btn:active:not(:disabled) { transform: translateY(1px) scale(0.99); }

.btn:focus-visible, .btn:has(input:focus-visible) { outline: 2px solid var(--accent); outline-offset: 2px; }

.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.4; cursor: not-allowed; }

.btn.primary {
  flex: 1;
  background: linear-gradient(180deg, #47b4ee, #2b93cf);
  border-color: rgba(127, 208, 255, 0.5);
  color: #04131d;
  box-shadow: 0 6px 20px rgba(60, 170, 230, 0.25);
}

.btn.primary:hover:not(:disabled) { background: linear-gradient(180deg, #5cc0f4, #339dd9); }

.btn.ghost { flex: 1; position: relative; }

.btn.ghost input { position: absolute; inset: 0; opacity: 0; cursor: inherit; width: 100%; }

body.ready .actions .btn { animation: pop 0.4s var(--ease); }

.error {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: rgba(235, 70, 70, 0.1);
  border: 1px solid rgba(235, 70, 70, 0.35);
  color: #f6c1c1;
  font-size: 13.5px;
  animation: slide-in 0.3s var(--ease);
}

.fineprint { margin: 0; color: var(--faint); font-size: 12.5px; }

.app { padding: 18px 20px 24px; max-width: 1560px; margin: 0 auto; }

.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 16px; }

.title h1 { font-size: 19px; }

.title p { margin: 2px 0 0; color: var(--muted); font-size: 12.5px; }

.pills { display: flex; gap: 8px; flex-wrap: wrap; }

.pill {
  --tone: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 30px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 550;
  color: var(--text);
  background: color-mix(in srgb, var(--tone) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--tone) 35%, transparent);
  transition: background-color 0.4s, border-color 0.4s;
}

.pill i { width: 8px; height: 8px; border-radius: 50%; background: var(--tone); box-shadow: 0 0 0 0 var(--tone); transition: background-color 0.4s; }

.pill[data-tone="ok"] { --tone: var(--ok); }

.pill[data-tone="warn"] { --tone: var(--warn); }

.pill[data-tone="busy"] { --tone: var(--accent); }

.pill[data-tone="busy"] i { animation: ping 1.4s infinite; }

.pill.pop { animation: pop 0.4s var(--ease); }

.layout { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 16px; align-items: start; }

.main-col { display: grid; gap: 16px; min-width: 0; }

.panel { display: grid; gap: 12px; }

.card { padding: 14px 16px; }

.label { color: var(--muted); font-size: 11.5px; font-weight: 650; letter-spacing: 0.08em; text-transform: uppercase; }

.card-head { display: flex; justify-content: space-between; align-items: baseline; }

.big { font-size: 20px; font-weight: 700; }

.video-card { padding: 0; overflow: hidden; position: relative; border-width: 1px; transition: border-color 0.4s, box-shadow 0.4s; }

.video-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  border: 0 solid var(--level);
  transition: border-width 0.25s, border-color 0.4s;
}

.video-card.caution::after { border-width: 3px; }

.video-card.alarm::after { border-width: 8px; animation: flash 0.5s steps(1) infinite; }

.video-card.alarm { box-shadow: 0 0 40px color-mix(in srgb, var(--level) 40%, transparent); }

.view { position: relative; aspect-ratio: 16 / 9; max-height: calc(100vh - 290px); min-height: 220px; width: 100%; background: #08090b; }

.view video, .view canvas { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; }

.view video { transform: scaleX(-1); }

.skeleton {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 18px;
  color: var(--muted);
  background: linear-gradient(110deg, #0d0f13 30%, #171b21 50%, #0d0f13 70%) 0 0 / 300% 100%;
  animation: sweep 1.6s linear infinite;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s;
}

.loading .skeleton { opacity: 1; }

.skeleton-face {
  width: 120px;
  height: 150px;
  border-radius: 50% 50% 46% 46%;
  border: 2px dashed rgba(255, 255, 255, 0.12);
}

.fault-banner, .badge, .calib, .ended {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}

.fault-banner {
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: linear-gradient(180deg, rgba(200, 60, 20, 0.92), rgba(200, 60, 20, 0.78));
  color: #fff;
  font-weight: 600;
  letter-spacing: 0.02em;
  transform: translateY(-100%);
}

.fault-banner svg { width: 20px; height: 20px; flex: none; }

.fault-banner.show { opacity: 1; transform: none; }

.badge {
  top: 60px;
  right: 14px;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(60, 60, 60, 0.85);
  border: 1px solid var(--edge-strong);
  font-size: 12.5px;
  font-weight: 600;
  transform: translateX(12px);
}

.badge.show { opacity: 1; transform: none; }

.calib {
  left: 14px;
  bottom: 14px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 18px 12px 12px;
  border-radius: 16px;
  background: rgba(13, 15, 19, 0.72);
  border: 1px solid var(--edge-strong);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transform: translateY(12px);
}

.calib.show { opacity: 1; transform: none; }

.calib-ring { position: relative; width: 64px; height: 64px; flex: none; }

.calib-ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }

.calib-ring circle { stroke-width: 8; }

.calib-ring .track { stroke: rgba(255, 255, 255, 0.1); }

.calib-ring .fill { stroke: var(--accent); transition: stroke-dashoffset 0.4s linear; filter: drop-shadow(0 0 6px rgba(60, 170, 230, 0.5)); }

.calib-count { position: absolute; inset: 0; display: flex; align-items: baseline; justify-content: center; padding-top: 19px; }

.calib-count strong { font-size: 20px; }

.calib-count span { font-size: 11px; color: var(--muted); margin-left: 1px; }

.calib-text { display: grid; gap: 2px; }

.calib-text span { color: var(--muted); font-size: 12.5px; }

.ended {
  inset: auto 14px 14px auto;
  display: grid;
  gap: 2px;
  padding: 12px 16px;
  border-radius: 14px;
  background: rgba(13, 15, 19, 0.8);
  border: 1px solid var(--edge-strong);
  transform: translateY(12px);
}

.ended span { color: var(--muted); font-size: 12.5px; }

.ended.show { opacity: 1; transform: none; }

.traces { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.trace { display: grid; gap: 8px; min-width: 0; }

.trace-head { display: flex; justify-content: space-between; color: var(--muted); font-size: 12px; }

.trace canvas { width: 100%; height: 130px; display: block; border-radius: 8px; background: rgba(0, 0, 0, 0.28); }

.state-card {
  position: relative;
  overflow: hidden;
  background: color-mix(in srgb, var(--level) 82%, #000);
  border-color: color-mix(in srgb, var(--level) 70%, #fff 10%);
  transition: background-color 0.45s var(--ease), border-color 0.45s var(--ease);
}

.state-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.16), transparent 55%);
  pointer-events: none;
}

.state-card .label { color: rgba(255, 255, 255, 0.82); }

.state-top { display: flex; justify-content: space-between; font-size: 12px; color: rgba(255, 255, 255, 0.85); }

.state-name { font-size: 32px; font-weight: 800; letter-spacing: 0.01em; color: #fff; margin-top: 6px; line-height: 1.1; }

.state-text { color: rgba(255, 255, 255, 0.88); margin-top: 2px; }

.state-card.bump .state-name { animation: rise 0.4s var(--ease); }

.eyes { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 10px; }

.eye-chip {
  --tone: var(--unknown);
  position: relative;
  padding: 10px 12px 10px 15px;
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.22);
  overflow: hidden;
  transition: background-color 0.25s;
}

.eye-chip::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--tone); transition: background-color 0.2s; }

.eye-chip[data-state="open"] { --tone: var(--ok); }

.eye-chip[data-state="closed"] { --tone: var(--bad); background: rgba(235, 70, 70, 0.1); }

.eye-head { display: flex; justify-content: space-between; align-items: baseline; }

.eye-head b { color: var(--tone); text-transform: capitalize; transition: color 0.2s; }

.eye-chip dl { display: grid; grid-template-columns: auto 1fr; gap: 1px 10px; margin: 6px 0 0; font-size: 12px; }

.eye-chip dt { color: var(--muted); }

.eye-chip dd { margin: 0; text-align: right; font-family: var(--mono); }

.closure { margin-top: 12px; }

.closure-head { display: flex; justify-content: space-between; align-items: baseline; }

.closure-head b { font-size: 17px; transition: color 0.2s; }

.closure.active .closure-head b { color: var(--bad); }

.meter { position: relative; height: 10px; margin-top: 8px; border-radius: 6px; background: rgba(255, 255, 255, 0.07); overflow: hidden; }

.meter i { position: absolute; inset: 0; transform-origin: left; transform: scaleX(0); border-radius: inherit; }

.closure-meter i { background: linear-gradient(90deg, #f07a3c, var(--bad)); transition: transform 0.12s linear; }

.perclos-meter i { background: var(--ok); transition: transform 0.6s var(--ease), background-color 0.5s; }

.perclos-meter i[data-band="caution"] { background: var(--warn); }

.perclos-meter i[data-band="drowsy"] { background: #f05a14; }

.meter .mark { position: absolute; top: 0; bottom: 0; left: var(--at); width: 2px; margin-left: -1px; background: rgba(228, 232, 235, 0.75); }

.meter-labels { position: relative; height: 16px; margin-top: 4px; color: var(--muted); font-size: 11px; }

.meter-labels span { position: absolute; left: var(--at); transform: translateX(-50%); white-space: nowrap; }

.meter-labels span[style*="100%"] { transform: translateX(-100%); }

.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 14px; margin-top: 10px; }

.stats div { display: grid; }

.stats span { color: var(--muted); font-size: 12px; }

.stats b { font-size: 20px; font-weight: 700; }

.system { display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; margin: 10px 0 0; font-size: 12.5px; }

.system dt { color: var(--muted); }

.system dd { margin: 0; text-align: right; font-family: var(--mono); font-size: 12px; white-space: pre; overflow: hidden; text-overflow: ellipsis; transition: color 0.3s; }

.system dd[data-tone="ok"] { color: var(--ok); }

.system dd[data-tone="warn"] { color: var(--warn); }

.system dd[data-tone="accent"] { color: var(--accent); }

.controls { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

.btn.small { min-height: 38px; padding: 0 12px; font-size: 13px; justify-content: space-between; }

.btn.small[aria-pressed="true"] { background: rgba(60, 170, 230, 0.16); border-color: rgba(60, 170, 230, 0.5); }

.btn.danger { color: #f6b0b0; }

.btn.silence {
  display: none;
  margin-top: 12px;
  width: 100%;
  color: #fff;
  background: rgba(0, 0, 0, 0.28);
  border-color: rgba(255, 255, 255, 0.35);
}

.btn.silence.show { display: inline-flex; animation: pop 0.35s var(--ease); }

.btn.silence:hover { background: rgba(0, 0, 0, 0.4); }

.btn.silence kbd { color: #fff; background: rgba(255, 255, 255, 0.14); }

.keys { grid-column: 1 / -1; margin: 4px 0 0; color: var(--muted); font-size: 11.5px; line-height: 2; }

.keys kbd { margin-left: 6px; }

.keys kbd:first-child { margin-left: 0; }

kbd {
  font: 600 11px/1 var(--mono);
  padding: 3px 6px;
  border-radius: 5px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--edge-strong);
}

@media (max-width: 1100px) {
  .layout { grid-template-columns: minmax(0, 1fr) 320px; }
  .state-name { font-size: 27px; }
}

@media (max-width: 820px) {
  .app { padding: 14px 12px 20px; }
  .layout { grid-template-columns: 1fr; }
  .view { max-height: none; }
  .panel { grid-template-columns: 1fr 1fr; }
  .panel > .state-card, .panel > .controls { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  .start-card { padding: 22px 18px; }
  .panel { grid-template-columns: 1fr; }
  .traces { grid-template-columns: 1fr; }
  .trace canvas { height: 110px; }
  .calib { left: 8px; bottom: 8px; padding: 8px 12px 8px 8px; }
  .calib-ring { width: 50px; height: 50px; }
  .calib-count { padding-top: 13px; }
  .calib-count strong { font-size: 16px; }
  .fault-banner { font-size: 12.5px; padding: 9px 12px; }
  .badge { top: 46px; }
}

@keyframes spin { to { transform: rotate(360deg); } }

@keyframes shimmer { from { transform: translateX(-100%); } to { transform: translateX(100%); } }

@keyframes sweep { from { background-position: 100% 0; } to { background-position: -50% 0; } }

@keyframes pop { 0% { transform: scale(0.92); } 60% { transform: scale(1.04); } 100% { transform: scale(1); } }

@keyframes ping {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--tone) 60%, transparent); }
  80%, 100% { box-shadow: 0 0 0 7px transparent; }
}

@keyframes rise { from { transform: translateY(6px); opacity: 0.4; } to { transform: none; opacity: 1; } }

@keyframes flash { 0% { border-color: var(--level); } 50% { border-color: transparent; } }

@keyframes fade-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

@keyframes slide-in { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }

@keyframes blink { 0%, 92%, 100% { transform: scaleY(1); } 95% { transform: scaleY(0.1); } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .video-card.alarm::after { animation: none; }
  [data-state="active"] > .stage-icon { animation: none; border-color: var(--accent); }
}