:root {
  color-scheme: dark;
  --bg: #0b0d12;
  --panel: #151822;
  --border: #262b3a;
  --text: #e8eaf0;
  --muted: #8b91a3;
  --accent: #5eead4;
  --accent-strong: #22c9ab;
  --good: #4ade80;
  --warn: #fbbf24;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 16px 48px;
}
h1 {
  font-size: 1.5rem;
  letter-spacing: 0.02em;
  margin: 0 0 4px;
}
.subtitle {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 20px;
}
.layout {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  max-width: 980px;
  width: 100%;
  justify-content: center;
}
.video-wrap {
  position: relative;
  width: min(640px, 92vw);
  aspect-ratio: 4 / 3;
  background: #000;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 8px 30px rgba(0,0,0,0.4);
}
video, canvas {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
}
video { transform: scaleX(-1); object-fit: cover; }
canvas { transform: scaleX(-1); object-fit: cover; }
.goal-hit-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 14, 20, 0.55);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.goal-hit-overlay.show { opacity: 1; pointer-events: auto; }
.checkmark {
  width: 140px;
  height: 140px;
}
.checkmark-circle {
  stroke: var(--good);
  stroke-width: 4;
  fill: none;
  stroke-dasharray: 300;
  stroke-dashoffset: 300;
}
.checkmark-check {
  stroke: var(--good);
  stroke-width: 6;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 60;
  stroke-dashoffset: 60;
}
.goal-hit-overlay.show .checkmark-circle {
  animation: draw 0.5s ease forwards;
}
.goal-hit-overlay.show .checkmark-check {
  animation: draw 0.35s ease 0.45s forwards;
}
@keyframes draw { to { stroke-dashoffset: 0; } }
.panel {
  width: min(320px, 92vw);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  height: fit-content;
}
.stat-block { text-align: center; }
.count {
  font-size: 3.4rem;
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.count.goal-met { color: var(--good); }
.count-label {
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 6px;
}
.progress-track {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: #1f2330;
  overflow: hidden;
  margin-top: 14px;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-strong), var(--accent));
  border-radius: 999px;
  transition: width 0.2s ease;
}
.progress-fill.goal-met { background: var(--good); }
label {
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.goal-input-row {
  display: flex;
  gap: 8px;
  align-items: center;
}
.goal-input-row > div {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
input[type="number"] {
  width: 100%;
  background: #0e1118;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 1rem;
}
input[type="number"]:focus { outline: 2px solid var(--accent); border-color: transparent; }
button {
  font: inherit;
  border: none;
  border-radius: 10px;
  padding: 10px 14px;
  cursor: pointer;
  font-weight: 600;
  transition: transform 0.1s ease, opacity 0.15s ease;
}
button:active { transform: scale(0.97); }
button:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #05221d; }
.btn-secondary { background: #1f2330; color: var(--text); }
.btn-row { display: flex; gap: 8px; }
.btn-row button { flex: 1; }
.display-toggle {
  display: flex;
  background: #0e1118;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 3px;
}
.display-toggle button {
  flex: 1;
  background: transparent;
  color: var(--muted);
  padding: 8px;
}
.display-toggle button.active {
  background: var(--accent);
  color: #05221d;
}
.status-line {
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
  min-height: 1.2em;
}
.sensitivity-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.sensitivity-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.sensitivity-value {
  font-size: 0.8rem;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}
input[type="range"] { width: 100%; accent-color: var(--accent); }
footer {
  margin-top: 28px;
  color: var(--muted);
  font-size: 0.75rem;
  text-align: center;
}