:root {
  color-scheme: dark;
  --bg: #090b12;
  --panel: #11141e;
  --panel-soft: #171b27;
  --line: rgba(255, 255, 255, 0.1);
  --muted: #9299a9;
  --text: #f4f6fb;
  --accent: #67f6c1;
  --accent-2: #51caff;
  --danger: #ff708a;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 15% -10%, rgba(81, 202, 255, 0.09), transparent 32rem),
    radial-gradient(circle at 90% 20%, rgba(103, 246, 193, 0.07), transparent 28rem),
    var(--bg);
}

button, input { font: inherit; }

button:focus-visible, input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.app-shell {
  width: min(1220px, calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 20px;
}

.topbar, .brand, .status-strip, .status-copy, .metrics, .slider-row > span {
  display: flex;
  align-items: center;
}

.topbar { justify-content: space-between; margin-bottom: 24px; }
.brand { gap: 14px; }
.brand h1, .panel-heading h2 { margin: 0; letter-spacing: -0.04em; }
.brand h1 { font-size: clamp(1.5rem, 3vw, 2.1rem); }

.eyebrow {
  margin: 0 0 3px;
  color: var(--accent);
  font: 700 0.67rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.16em;
}

.brand-mark { position: relative; width: 42px; height: 42px; }
.brand-mark i { position: absolute; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 16px rgba(103, 246, 193, 0.7); }
.brand-mark i:nth-child(1) { left: 18px; top: 2px; }
.brand-mark i:nth-child(2) { left: 6px; top: 17px; }
.brand-mark i:nth-child(3) { right: 6px; top: 17px; }
.brand-mark i:nth-child(4) { left: 11px; bottom: 2px; }
.brand-mark i:nth-child(5) { right: 11px; bottom: 2px; }
.brand-mark::before, .brand-mark::after { content: ""; position: absolute; background: rgba(103, 246, 193, 0.7); height: 2px; width: 27px; top: 19px; left: 8px; transform: rotate(53deg); }
.brand-mark::after { transform: rotate(-53deg); }

.live-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255,255,255,0.035);
  font: 700 0.66rem ui-monospace, monospace;
  letter-spacing: .1em;
}
.live-pill.active { color: var(--accent); border-color: rgba(103,246,193,.25); }
.live-dot { width: 7px; height: 7px; border-radius: 50%; background: #525866; }
.live-pill.active .live-dot { background: var(--accent); box-shadow: 0 0 0 5px rgba(103,246,193,.12); animation: pulse 1.6s infinite; }

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 18px;
}

.camera-card, .side-panel {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(17, 20, 30, 0.9);
  box-shadow: 0 28px 60px rgba(0,0,0,.28);
  overflow: hidden;
}

.camera-stage {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background:
    linear-gradient(rgba(255,255,255,.024) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.024) 1px, transparent 1px),
    radial-gradient(circle at center, #1b2130 0, #0d1018 70%);
  background-size: 42px 42px, 42px 42px, auto;
}

.camera-stage video, .camera-stage canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.camera-stage.mirrored video, .camera-stage.mirrored canvas { transform: scaleX(-1); }
.camera-stage video { opacity: 0; transition: opacity .35s ease; }
.camera-stage.streaming video { opacity: 1; }
.camera-stage canvas { z-index: 2; }

.empty-state, .loading-overlay {
  position: absolute;
  z-index: 5;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 30px;
  background: radial-gradient(circle at center, rgba(20,26,38,.62), rgba(9,11,18,.86));
}
.empty-state h2 { margin: 20px 0 7px; font-size: clamp(1.4rem, 3vw, 2rem); letter-spacing: -.04em; }
.empty-state p, .loading-overlay p { margin: 0 0 23px; color: var(--muted); }
.loading-overlay[hidden], .empty-state[hidden] { display: none; }

.pose-icon { position: relative; width: 90px; height: 120px; opacity: .88; filter: drop-shadow(0 0 16px rgba(103,246,193,.28)); }
.pose-icon span { position: absolute; display: block; background: var(--accent); border-radius: 999px; }
.pose-icon .head { width: 25px; height: 25px; top: 0; left: 33px; background: transparent; border: 4px solid var(--accent); }
.pose-icon .torso { width: 4px; height: 45px; top: 28px; left: 44px; }
.pose-icon .arm { width: 47px; height: 4px; top: 44px; }
.pose-icon .arm-left { left: 5px; transform: rotate(-28deg); transform-origin: right center; }
.pose-icon .arm-right { right: 4px; transform: rotate(28deg); transform-origin: left center; }
.pose-icon .leg { width: 55px; height: 4px; top: 69px; }
.pose-icon .leg-left { left: -2px; transform: rotate(-55deg); transform-origin: right center; }
.pose-icon .leg-right { right: -3px; transform: rotate(55deg); transform-origin: left center; }

.primary-button, .secondary-button {
  border: 0;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 800;
  transition: transform .18s ease, opacity .18s ease, background .18s ease;
}
.primary-button { display: flex; align-items: center; gap: 10px; padding: 13px 19px; color: #07120e; background: var(--accent); box-shadow: 0 10px 30px rgba(103,246,193,.18); }
.primary-button:hover, .secondary-button:hover:not(:disabled) { transform: translateY(-2px); }
.camera-symbol { width: 16px; height: 12px; border: 2px solid currentColor; border-radius: 3px; position: relative; }
.camera-symbol::after { content: ""; position: absolute; right: -7px; top: 1px; border: 4px solid transparent; border-right: 0; border-left: 5px solid currentColor; }

.spinner { width: 42px; height: 42px; margin-bottom: 16px; border: 3px solid rgba(255,255,255,.12); border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite; }

.corner { position: absolute; z-index: 3; width: 25px; height: 25px; border-color: rgba(103,246,193,.65); pointer-events: none; }
.corner-tl { top: 18px; left: 18px; border-top: 2px solid; border-left: 2px solid; }
.corner-tr { top: 18px; right: 18px; border-top: 2px solid; border-right: 2px solid; }
.corner-bl { bottom: 18px; left: 18px; border-bottom: 2px solid; border-left: 2px solid; }
.corner-br { bottom: 18px; right: 18px; border-bottom: 2px solid; border-right: 2px solid; }
.scan-line { display: none; position: absolute; z-index: 3; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, rgba(103,246,193,.65), transparent); box-shadow: 0 0 8px var(--accent); animation: scan 4s ease-in-out infinite; pointer-events: none; }
.streaming .scan-line { display: block; }

.status-strip { justify-content: space-between; min-height: 58px; padding: 0 18px; color: var(--muted); font-size: .78rem; }
.status-copy { gap: 9px; }
.status-indicator { width: 7px; height: 7px; border-radius: 50%; background: #596170; }
.status-indicator.active { background: var(--accent); box-shadow: 0 0 9px rgba(103,246,193,.8); }
.status-indicator.error { background: var(--danger); }
.metrics { gap: 17px; font: .72rem ui-monospace, monospace; }
.metrics b { color: var(--text); }

.side-panel { padding: 24px; }
.panel-heading { padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.panel-heading h2 { font-size: 1.25rem; }

.toggle-row, .slider-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.toggle-row b, .slider-row b, .tip-card b { display: block; font-size: .85rem; }
.toggle-row small { color: var(--muted); font-size: .69rem; }
.toggle-row input { position: absolute; opacity: 0; pointer-events: none; }
.toggle { position: relative; flex: 0 0 auto; width: 41px; height: 23px; border-radius: 999px; background: #313746; cursor: pointer; transition: background .2s; }
.toggle::after { content: ""; position: absolute; width: 17px; height: 17px; left: 3px; top: 3px; border-radius: 50%; background: #fff; transition: transform .2s; }
.toggle-row input:checked + .toggle { background: var(--accent); }
.toggle-row input:checked + .toggle::after { transform: translateX(18px); background: #0a1812; }

.slider-row { display: block; }
.slider-row > span { justify-content: space-between; margin-bottom: 13px; }
.slider-row output { color: var(--accent); font: 700 .76rem ui-monospace, monospace; }
input[type="range"] { width: 100%; accent-color: var(--accent); cursor: pointer; }

.tip-card { display: flex; gap: 13px; margin-top: 20px; padding: 15px; border: 1px solid rgba(81,202,255,.14); border-radius: 13px; background: rgba(81,202,255,.055); }
.tip-card p { margin: 5px 0 0; color: var(--muted); font-size: .72rem; line-height: 1.5; }
.tip-number { color: var(--accent-2); font: 700 .68rem ui-monospace, monospace; }
.privacy-note { display: flex; align-items: center; gap: 10px; margin: 19px 0; color: var(--muted); font-size: .7rem; }
.privacy-note p { margin: 0; }
.privacy-note b { color: var(--text); }
.shield { display: grid; place-items: center; width: 25px; height: 28px; color: var(--accent); border: 1px solid rgba(103,246,193,.3); border-radius: 12px 12px 14px 14px; }

.secondary-button { width: 100%; padding: 12px; color: var(--text); border: 1px solid var(--line); background: rgba(255,255,255,.045); }
.secondary-button:disabled { cursor: not-allowed; opacity: .35; }

footer { padding-top: 18px; color: #646b78; text-align: center; font: .66rem ui-monospace, monospace; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 50% { opacity: .5; } }
@keyframes scan { 0%, 100% { top: 10%; opacity: 0; } 15%, 85% { opacity: .55; } 50% { top: 90%; } }

@media (max-width: 840px) {
  .workspace { grid-template-columns: 1fr; }
  .side-panel { display: grid; grid-template-columns: 1fr 1fr; column-gap: 24px; }
  .panel-heading, .tip-card, .privacy-note, .secondary-button { grid-column: 1 / -1; }
}

@media (max-width: 570px) {
  .app-shell { width: min(100% - 22px, 1220px); padding-top: 17px; }
  .workspace { gap: 12px; }
  .camera-stage { aspect-ratio: 4 / 5; }
  .status-strip { align-items: flex-start; gap: 9px; flex-direction: column; padding: 12px 14px; }
  .side-panel { display: block; }
  .brand .eyebrow { display: none; }
  .empty-state { padding: 18px; }
  .pose-icon { transform: scale(.8); margin-bottom: -10px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; }
}