:root {
  --primary: #60a5fa;
  --primary-dark: #3b82f6;
  --dark: #020617;
  --dark-soft: #0f172a;
  --card: #111827;
  --text: #f8fafc;
  --muted: #cbd5e1;
  --muted-dark: #94a3b8;
  --border: rgba(148, 163, 184, 0.22);
  --success: #22c55e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(96, 165, 250, 0.2), transparent 32%),
    radial-gradient(circle at bottom right, rgba(59, 130, 246, 0.12), transparent 35%),
    linear-gradient(135deg, #020617 0%, #0f172a 100%);
  line-height: 1.7;
  min-height: 100vh;
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

/* Header */

.project-header {
  padding: 64px 0 32px;
  text-align: center;
}

.project-label,
.section-label {
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 12px;
}

.project-header h1 {
  margin: 0 0 18px;
  font-size: clamp(2.3rem, 6vw, 4.4rem);
  line-height: 1.05;
  letter-spacing: -0.05em;
}

.project-intro {
  max-width: 820px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 1.1rem;
}

.header-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* Main layout */

main {
  padding: 24px 0 64px;
}

.card {
  background: rgba(17, 24, 39, 0.92);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 28px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
  margin-bottom: 24px;
}

.card h2 {
  margin: 0 0 14px;
  font-size: 1.35rem;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.card p {
  color: var(--muted);
}

/* Overview and methodology */

.overview-grid,
.method-grid {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}

.overview-grid {
  grid-template-columns: repeat(3, 1fr);
}

.method-grid {
  grid-template-columns: repeat(4, 1fr);
}

.overview-grid > div,
.method-grid > div {
  background: #0f172a;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px;
}

.step-number {
  display: inline-block;
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 800;
  margin-bottom: 10px;
}

/* Dashboard layout */

.dashboard-layout {
  display: grid;
  grid-template-columns: 1.6fr 0.9fr;
  gap: 24px;
  align-items: start;
}

.video-card,
.stats-card,
.controls-card,
.status-card {
  margin-bottom: 0;
}

.side-panel {
  display: grid;
  gap: 24px;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: start;
}

/* Video and canvas alignment */

.video-box {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 20px;
  overflow: hidden;
  background: #000;
  border: 1px solid var(--border);
  margin-top: 18px;
}

.video-box video,
.video-box canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 20px;
}

.video-box video {
  object-fit: contain;
  background: #000;
}

.video-box canvas {
  pointer-events: none;
}

/* Counter */

.counter-box {
  padding: 24px;
  border-radius: 20px;
  background: #0f172a;
  border: 1px solid var(--border);
}

.counter-box h3 {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.counter-number {
  font-size: 3.4rem;
  line-height: 1;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 10px;
}

.counter-box small {
  color: var(--muted-dark);
}

/* Status */

.status-box {
  display: grid;
  gap: 4px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.25);
}

.status-box strong {
  color: var(--success);
}

.status-box span {
  color: var(--muted);
}

/* Buttons */

button,
.btn {
  display: inline-block;
  appearance: none;
  border: 1px solid var(--primary-dark);
  background: var(--primary-dark);
  color: #ffffff;
  border-radius: 999px;
  padding: 10px 18px;
  font-weight: 700;
  cursor: pointer;
  transition: 0.2s ease;
  text-decoration: none;
}

button:hover,
.btn:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #020617;
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-secondary:hover {
  background: var(--primary);
  color: #020617;
}

/* Footer */

footer {
  border-top: 1px solid var(--border);
  padding: 24px 20px;
  text-align: center;
  color: var(--muted-dark);
}

footer p {
  margin: 0;
}

/* Responsive */

@media (max-width: 950px) {
  .dashboard-layout,
  .overview-grid,
  .method-grid {
    grid-template-columns: 1fr;
  }

  .project-header {
    padding-top: 44px;
  }

  .card {
    padding: 22px;
  }

  .counter-number {
    font-size: 2.6rem;
  }
}

@media (max-width: 520px) {
  .container {
    width: min(100% - 24px, 1180px);
  }

  .header-actions {
    flex-direction: column;
  }

  button,
  .btn {
    width: 100%;
    text-align: center;
  }

  .project-intro {
    font-size: 1rem;
  }
}