:root {
  --bg: #f4f7fb;
  --panel: #ffffff;
  --line: #d6dce5;
  --text: #132238;
  --muted: #6b7a90;
  --primary: #d73a31;
  --primary-dark: #b92d25;
  --accent: #0f766e;
  --shadow: 0 16px 48px rgba(18, 38, 63, 0.12);
  --radius: 18px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: linear-gradient(180deg, #eef3f8 0%, #f8fafc 100%); color: var(--text); font-family: var(--sans); }
body { min-height: 100vh; }

.app-shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 24px 16px 40px;
}

.hero {
  padding: 8px 2px 18px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(215, 58, 49, 0.1);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
}

.hero h1 {
  margin: 14px 0 8px;
  font-size: clamp(28px, 5vw, 42px);
  line-height: 1.1;
}

.hero p {
  margin: 0;
  max-width: 720px;
  color: var(--muted);
  line-height: 1.7;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(300px, 0.9fr);
  gap: 18px;
}

.card {
  background: var(--panel);
  border: 1px solid rgba(214, 220, 229, 0.9);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
}

.card-head.compact { margin-bottom: 18px; }
.card-head h2 { margin: 0 0 6px; font-size: 20px; }
.card-head p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; }

.status-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 88px;
  min-height: 34px;
  padding: 8px 12px;
  border-radius: 999px;
  background: #eef2f7;
  color: #334155;
  font-size: 13px;
  font-weight: 700;
}

.video-wrap {
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  min-height: 360px;
  background: #07111f;
  border: 1px solid #0f172a;
}

#camera-video {
  width: 100%;
  height: 360px;
  object-fit: cover;
  display: block;
  background: #07111f;
}

.video-empty {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: rgba(255,255,255,0.72);
  padding: 20px;
  font-size: 15px;
  line-height: 1.7;
  background: radial-gradient(circle at center, rgba(15, 23, 42, 0.2) 0%, rgba(7, 17, 31, 0.82) 70%);
}

.scan-line {
  position: absolute;
  left: 10%;
  right: 10%;
  top: 50%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(45, 212, 191, 0.95), transparent);
  box-shadow: 0 0 18px rgba(45, 212, 191, 0.9);
  animation: pulse 2s ease-in-out infinite;
  pointer-events: none;
}

@keyframes pulse {
  0%, 100% { opacity: 0.35; transform: translateY(-28px); }
  50% { opacity: 1; transform: translateY(28px); }
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.controls.stack {
  flex-direction: column;
}

.btn {
  appearance: none;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  border-radius: 12px;
  min-height: 46px;
  padding: 0 16px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, border-color 0.12s ease, background 0.12s ease;
}

.btn:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; box-shadow: none; }

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
}

.hint-box, .result-box, .manual-box, .meta-box {
  border: 1px solid #e2e8f0;
  background: #f8fafc;
  border-radius: 14px;
  padding: 14px;
}

.hint-box {
  margin-top: 14px;
  color: var(--muted);
  line-height: 1.7;
  font-size: 14px;
}

.side-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.field-label {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 700;
  color: #475569;
}

.result-value {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
  min-height: 30px;
}

.mono { font-family: var(--mono); }

.manual-row {
  display: flex;
  gap: 10px;
}

.input {
  flex: 1;
  min-height: 46px;
  border-radius: 12px;
  border: 1px solid var(--line);
  padding: 0 14px;
  font-size: 15px;
}

.meta-box {
  display: grid;
  gap: 10px;
}

.meta-box div {
  display: grid;
  gap: 4px;
}

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

.meta-box strong {
  font-size: 13px;
  word-break: break-all;
  color: #0f172a;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .app-shell {
    padding: 18px 12px 28px;
  }

  .card {
    padding: 16px;
  }

  #camera-video,
  .video-wrap {
    min-height: 300px;
    height: 300px;
  }

  .manual-row {
    flex-direction: column;
  }
}