@import url('https://fonts.googleapis.com/css2?family=Barlow+Semi+Condensed:wght@400;600;700&family=Outfit:wght@300;400;500;600&display=swap');

/* ── Tokens ─────────────────────────────────────────────────────────────── */
:root {
  --bg:       #0D0D0D;
  --surface:  #141414;
  --surface2: #1C1C1C;
  --border:   rgba(255,255,255,0.07);
  --border2:  rgba(255,255,255,0.13);

  --text-hi:  #FFFFFF;
  --text-lo:  #A1A1AA;
  --text-dim: #52525B;

  --safe:     #30D158;
  --warn:     #FF9500;
  --danger:   #FF3B30;

  --safe-bg:  rgba(48,209,88,.10);
  --warn-bg:  rgba(255,149,0,.10);
  --danger-bg:rgba(255,59,48,.10);

  --f-num: 'Barlow Semi Condensed', sans-serif;
  --f-ui:  'Outfit', sans-serif;

  --r:  10px;
  --r2: 16px;
  --tx: 0.25s ease;
}

/* ── Reset ───────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }

body {
  font-family: var(--f-ui);
  background: var(--bg);
  color: var(--text-hi);
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* ── Color helpers ───────────────────────────────────────────────────────── */
.safe-color   { color: var(--safe)   !important; }
.warn-color   { color: var(--warn)   !important; }
.danger-color { color: var(--danger) !important; }

/* ── App shell ───────────────────────────────────────────────────────────── */
#app { display: flex; flex-direction: column; height: 100vh; }

/* ── Header ──────────────────────────────────────────────────────────────── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  height: 52px;
  flex-shrink: 0;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-icon { width: 36px; height: 22px; color: var(--safe); }
.brand-name {
  font-family: var(--f-num);
  font-size: 17px; font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-hi);
}
.brand-sub {
  font-size: 10px; font-weight: 400;
  color: var(--text-dim);
  letter-spacing: 0.04em;
  margin-top: 1px;
}
.header-right { display: flex; align-items: center; gap: 16px; }

.session-block { display: flex; flex-direction: column; align-items: flex-end; }
.meta-label { font-size: 9px; font-weight: 600; letter-spacing: 0.12em; color: var(--text-dim); }
.session-val {
  font-family: var(--f-num);
  font-size: 14px; font-weight: 600;
  color: var(--text-lo);
  letter-spacing: 0.05em;
}

/* Badge */
.badge {
  display: flex; align-items: center; gap: 6px;
  padding: 5px 12px;
  border-radius: 100px;
  font-family: var(--f-num);
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.12em;
  border: 1px solid transparent;
  transition: all var(--tx);
}
.badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
}
.badge-standby { color: var(--text-dim); border-color: var(--border); background: transparent; }
.badge.safe    { color: var(--safe);   border-color: rgba(48,209,88,.3);  background: var(--safe-bg); }
.badge.warning { color: var(--warn);   border-color: rgba(255,149,0,.3);  background: var(--warn-bg); }
.badge.danger  { color: var(--danger); border-color: rgba(255,59,48,.3);  background: var(--danger-bg); }

/* ── Alert Banner ────────────────────────────────────────────────────────── */
.banner {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  height: 36px;
  flex-shrink: 0;
  font-family: var(--f-num);
  font-size: 12px; font-weight: 700;
  letter-spacing: 0.10em;
  transition: background var(--tx), color var(--tx);
}
.banner-icon { font-size: 14px; }
.banner-standby { background: var(--surface); color: var(--text-dim); border-bottom: 1px solid var(--border); }
.banner.safe    { background: var(--safe-bg);   color: var(--safe);   border-bottom: 1px solid rgba(48,209,88,.2); }
.banner.warning { background: var(--warn-bg);   color: var(--warn);   border-bottom: 1px solid rgba(255,149,0,.2); }
.banner.danger  {
  background: var(--danger-bg);
  color: var(--danger);
  border-bottom: 1px solid rgba(255,59,48,.3);
  animation: banner-pulse 0.9s ease-in-out infinite;
}
@keyframes banner-pulse {
  0%, 100% { background: var(--danger-bg); }
  50%       { background: rgba(255,59,48,.18); }
}

/* ── Main ────────────────────────────────────────────────────────────────── */
.main {
  display: flex;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

/* ── Camera Section (70%) ────────────────────────────────────────────────── */
.cam-section {
  flex: 7;
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 14px;
  gap: 10px;
  border-right: 1px solid var(--border);
}

.camera-frame {
  position: relative;
  flex: 1;
  min-height: 0;
  background: #080808;
  border-radius: var(--r2);
  overflow: hidden;
  border: 1.5px solid var(--border);
  transition: border-color 0.35s ease, box-shadow 0.35s ease;
}
.camera-frame.state-safe {
  border-color: rgba(48,209,88,.25);
  box-shadow: 0 0 0 1px rgba(48,209,88,.08);
}
.camera-frame.state-warning {
  border-color: rgba(255,149,0,.4);
  box-shadow: 0 0 0 2px rgba(255,149,0,.12), 0 0 18px rgba(255,149,0,.15);
}
.camera-frame.state-danger {
  border-color: rgba(255,59,48,.7);
  animation: danger-ring 0.75s ease-in-out infinite;
}
@keyframes danger-ring {
  0%,100% { box-shadow: 0 0 0 2px rgba(255,59,48,.3),  0 0 20px rgba(255,59,48,.20); }
  50%      { box-shadow: 0 0 0 3px rgba(255,59,48,.6),  0 0 40px rgba(255,59,48,.35); }
}

#video {
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scaleX(-1);
  display: block;
}

/* Corner brackets */
.bkt {
  position: absolute; width: 18px; height: 18px;
  border-color: var(--text-dim); border-style: solid;
  transition: border-color 0.3s;
  pointer-events: none;
}
.bkt-tl { top: 10px;    left: 10px;    border-width: 1.5px 0 0 1.5px; }
.bkt-tr { top: 10px;    right: 10px;   border-width: 1.5px 1.5px 0 0; }
.bkt-bl { bottom: 10px; left: 10px;    border-width: 0 0 1.5px 1.5px; }
.bkt-br { bottom: 10px; right: 10px;   border-width: 0 1.5px 1.5px 0; }
.camera-frame.state-safe    .bkt { border-color: rgba(48,209,88,.5);  }
.camera-frame.state-warning .bkt { border-color: rgba(255,149,0,.6);  }
.camera-frame.state-danger  .bkt { border-color: rgba(255,59,48,.8);  }

/* Scan line */
.scan-line {
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.25), transparent);
  opacity: 0;
  pointer-events: none;
}
.scan-line.active {
  opacity: 1;
  animation: scan 3.5s linear infinite;
}
@keyframes scan {
  0%   { transform: translateY(0); }
  100% { transform: translateY(100vh); }
}

/* Live chip */
.live-chip {
  position: absolute; bottom: 12px; left: 12px;
  display: flex; align-items: center; gap: 5px;
  background: rgba(0,0,0,.65);
  backdrop-filter: blur(6px);
  border: 1px solid var(--border2);
  border-radius: 100px;
  padding: 3px 9px;
  font-family: var(--f-num);
  font-size: 10px; font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--text-lo);
}
.rec-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--text-dim);
  transition: background 0.3s;
}
.rec-dot.live {
  background: var(--danger);
  animation: blink 1.2s ease-in-out infinite;
}
@keyframes blink {
  0%,100% { opacity: 1; }
  50%      { opacity: 0.25; }
}

/* No face */
.no-face {
  position: absolute; top: 12px; left: 50%; transform: translateX(-50%);
  background: rgba(255,59,48,.15);
  border: 1px solid rgba(255,59,48,.35);
  border-radius: 100px;
  padding: 4px 14px;
  font-size: 10px; font-weight: 600; letter-spacing: 0.10em;
  color: var(--danger);
}

/* Idle overlay */
.idle-overlay {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 12px;
  background: rgba(13,13,13,.90);
  backdrop-filter: blur(4px);
}
.idle-eye-svg { width: 80px; opacity: 0.35; animation: eye-drift 4s ease-in-out infinite; }
@keyframes eye-drift {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}
.idle-title { font-family: var(--f-num); font-size: 14px; font-weight: 600; letter-spacing: 0.12em; color: var(--text-dim); }
.idle-sub   { font-size: 12px; color: var(--text-dim); }
.idle-overlay.hidden { display: none; }

/* Controls */
.cam-controls { display: flex; gap: 10px; flex-shrink: 0; }
.btn {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 22px;
  border: none; border-radius: var(--r);
  font-family: var(--f-num);
  font-size: 12px; font-weight: 700;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: all 0.18s ease;
  position: relative; overflow: hidden;
}
.btn-start {
  background: var(--safe);
  color: #000;
  flex: 1;
}
.btn-start:hover { filter: brightness(1.12); }
.btn-start:active { transform: scale(0.97); }
.btn-start.pressed {
  animation: btn-press 0.28s ease;
}
@keyframes btn-press {
  0%   { transform: scale(1); }
  35%  { transform: scale(0.95); }
  100% { transform: scale(1); }
}
.btn-stop {
  background: transparent;
  color: var(--danger);
  border: 1.5px solid rgba(255,59,48,.35);
  flex: 1;
}
.btn-stop:hover { background: var(--danger-bg); border-color: var(--danger); }
.btn-stop:active { transform: scale(0.97); }

/* ── Metrics Panel (30%) ─────────────────────────────────────────────────── */
.metrics {
  flex: 3;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px;
  overflow-y: auto;
  overflow-x: hidden;
  min-width: 0;
}
.metrics::-webkit-scrollbar { width: 3px; }
.metrics::-webkit-scrollbar-track { background: transparent; }
.metrics::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 2px; }

/* Card */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  padding: 12px 14px;
  transition: border-color 0.3s, background 0.3s;
  flex-shrink: 0;
}
.card.alerted {
  border-color: rgba(255,59,48,.30);
  background: rgba(255,59,48,.04);
}
.card.warned {
  border-color: rgba(255,149,0,.25);
  background: rgba(255,149,0,.03);
}
.card-header {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 8px;
}
.card-label {
  font-family: var(--f-num);
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-lo);
}
.card-tag {
  font-size: 10px; font-weight: 400;
  color: var(--text-dim);
}
.card-meta {
  font-size: 10px; color: var(--text-dim);
  margin-top: 6px;
  min-height: 14px;
}

/* Card row (two halves) */
.card-row { display: flex; gap: 8px; }
.card-half { flex: 1; min-width: 0; }

/* ── Face state card ─────────────────────────────────────────────────────── */
.card-face { padding: 10px 14px; }
.face-inner { display: flex; align-items: center; gap: 14px; }
.face-icon  { width: 64px; height: 64px; flex-shrink: 0; }

/* Face SVG elements */
.face-head       { fill: var(--surface2); stroke: var(--border2); stroke-width: 1.2; }
.face-eye-bg     { fill: white; opacity: 0.92; }
.face-eye-stroke { fill: none; stroke: rgba(0,0,0,.3); stroke-width: 0.8; }
.face-pupil      { fill: #111; }
.face-eyelid {
  fill: var(--surface2);
  transform-box: fill-box;
  transform-origin: 50% 0%;
  transform: scaleY(0);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.face-icon.drowsy .face-eyelid { transform: scaleY(0.55); }
.face-icon.danger .face-eyelid { transform: scaleY(1.1);  }

.face-mouth {
  fill: none; stroke: rgba(0,0,0,.55); stroke-width: 2.2;
  stroke-linecap: round;
  opacity: 0;
  transition: opacity 0.35s ease;
}
.face-icon.alert  .face-mouth-alert  { opacity: 1; }
.face-icon.drowsy .face-mouth-drowsy { opacity: 1; }
.face-icon.danger .face-mouth-danger { opacity: 1; }

.face-info { display: flex; flex-direction: column; gap: 2px; }
.face-state-text {
  font-family: var(--f-num);
  font-size: 26px; font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1;
  transition: color 0.35s ease;
}

/* ── PERCLOS Circular Gauge ──────────────────────────────────────────────── */
.gauge-wrap {
  display: flex; justify-content: center;
}
.gauge-svg { width: 130px; height: 130px; }

.gauge-track { stroke: var(--surface2); }
#gauge-fill  {
  stroke: var(--safe);
  transition: stroke-dashoffset 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              stroke 0.4s ease;
}

.thresh-tick  { stroke: rgba(255,255,255,.20); }
.thresh-label {
  font-family: var(--f-num);
  font-size: 7px; fill: var(--text-dim);
}
.gauge-num {
  font-family: var(--f-num);
  font-size: 22px; font-weight: 700;
  fill: var(--text-hi);
  transition: fill 0.4s ease;
}
.gauge-sub {
  font-family: var(--f-num);
  font-size: 7.5px; font-weight: 600;
  fill: var(--text-dim);
  letter-spacing: 0.12em;
}

/* ── Eye State Cards ─────────────────────────────────────────────────────── */
.eyes-row {
  display: flex; gap: 8px;
}
.eye-card {
  flex: 1;
  display: flex; flex-direction: column; align-items: center; gap: 5px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 8px 6px;
  transition: border-color 0.3s;
}
.eye-card.open   { border-color: rgba(48,209,88,.25); }
.eye-card.closed { border-color: rgba(255,59,48,.25); }

.eye-svg-icon { width: 100%; max-width: 58px; }

/* SVG eye elements */
.eye-sclera       { fill: white; opacity: 0.9; }
.eye-iris         { fill: #2a5caa; }
.eye-pupil-dot    { fill: #111; }
.eye-outline-stroke { fill: none; stroke: rgba(0,0,0,.2); stroke-width: 0.8; }
.eye-lid-svg {
  fill: var(--surface2);
  transform-box: fill-box;
  transform-origin: 50% 0%;
  transform: scaleY(0);
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.eye-card.closed .eye-lid-svg { transform: scaleY(1.1); }

.eye-meta { display: flex; flex-direction: column; align-items: center; gap: 1px; }
.eye-side-label {
  font-size: 9px; font-weight: 600; letter-spacing: 0.12em;
  color: var(--text-dim);
}
.eye-prob {
  font-family: var(--f-num);
  font-size: 13px; font-weight: 600;
  color: var(--text-lo);
  transition: color 0.25s;
}
.eye-card.closed .eye-prob { color: var(--danger); }
.eye-card.open   .eye-prob { color: var(--safe); }

/* ── Big number ──────────────────────────────────────────────────────────── */
.big-num {
  display: block;
  font-family: var(--f-num);
  font-size: 48px; font-weight: 700;
  line-height: 1;
  margin: 4px 0;
  transition: color 0.3s ease;
}

/* ── Pips ────────────────────────────────────────────────────────────────── */
.pips { display: flex; gap: 5px; margin-top: 2px; }
.pip {
  width: 20px; height: 6px;
  border-radius: 3px;
  background: var(--surface2);
  border: 1px solid var(--border2);
  transition: background 0.3s, border-color 0.3s;
}
.pip.active  { background: var(--warn);   border-color: var(--warn); }
.pip.alerted { background: var(--danger); border-color: var(--danger); }

/* ── Pitch gauge ─────────────────────────────────────────────────────────── */
.pitch-gauge { margin-top: 8px; }
.pitch-track {
  position: relative;
  height: 5px;
  background: var(--surface2);
  border-radius: 3px;
  overflow: visible;
}
.pitch-center-mark {
  position: absolute;
  left: 50%; top: -3px;
  width: 1px; height: 11px;
  background: var(--border2);
  transform: translateX(-50%);
}
.pitch-needle {
  position: absolute;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--safe);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              background 0.3s ease,
              box-shadow 0.3s ease;
  box-shadow: 0 0 8px rgba(48,209,88,.6);
}
.pitch-scale {
  display: flex; justify-content: space-between;
  margin-top: 4px;
  font-size: 9px; color: var(--text-dim);
}

/* ── Stats strip ─────────────────────────────────────────────────────────── */
.stats-strip {
  display: flex; align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 8px 14px;
  gap: 0;
  flex-shrink: 0;
}
.stat-item { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 2px; }
.stat-label { font-size: 9px; font-weight: 600; letter-spacing: 0.12em; color: var(--text-dim); }
.stat-val {
  font-family: var(--f-num);
  font-size: 13px; font-weight: 600;
  color: var(--text-lo);
}
.stat-div { width: 1px; height: 24px; background: var(--border2); margin: 0 8px; }

/* ── Footer ──────────────────────────────────────────────────────────────── */
.footer {
  display: flex; align-items: center; justify-content: center;
  flex-wrap: wrap; gap: 6px;
  padding: 6px 20px;
  border-top: 1px solid var(--border);
  background: var(--surface);
  font-size: 10px;
  color: var(--text-dim);
  flex-shrink: 0;
  line-height: 1;
}
.footer-sep { opacity: 0.4; }
.footer-link {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-link:hover { color: var(--safe); }

/* ── Utility ─────────────────────────────────────────────────────────────── */
.hidden { display: none !important; }