:root {
  --surface: #ffffff;
  --surface-muted: #f6f7f9;
  --border: #d8dee6;
  --text: #172033;
  --muted: #657084;
  --accent: #0f6b5f;
  --accent-strong: #0b5a50;
  --info: #275f9f;
  --warning: #a35f00;
}

body {
  min-height: 100vh;
  background: var(--surface-muted);
  color: var(--text);
}

a {
  color: var(--info);
}

.btn-primary {
  --bs-btn-bg: var(--accent);
  --bs-btn-border-color: var(--accent);
  --bs-btn-hover-bg: var(--accent-strong);
  --bs-btn-hover-border-color: var(--accent-strong);
}

.page-shell {
  padding: 2rem 0 3rem;
}

.flash-stack {
  margin-bottom: 1.25rem;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.page-header h1 {
  margin: 0;
  font-size: clamp(1.75rem, 2vw, 2.35rem);
}

.eyebrow {
  margin: 0 0 0.35rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.auth-layout {
  min-height: calc(100vh - 4rem);
  display: grid;
  place-items: center;
}

.auth-panel,
.form-section,
.content-section,
.camera-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 16px 40px rgba(23, 32, 51, 0.06);
}

.auth-panel {
  width: min(100%, 440px);
  padding: 2rem;
}

.form-section,
.content-section,
.camera-panel {
  padding: 1.25rem;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.section-header h2,
.content-section h2 {
  font-size: 1.15rem;
  margin: 0 0 1rem;
}

.section-header h2 {
  margin: 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.1rem;
}

.stat-card span {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
}

.stat-card strong {
  display: block;
  margin-top: 0.35rem;
  font-size: 2rem;
  line-height: 1;
}

.empty-state {
  border: 1px dashed var(--border);
  border-radius: 8px;
  color: var(--muted);
  padding: 1.25rem;
  text-align: center;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 1rem;
}

.form-help {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0.85rem 0 0;
}

.upload-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 0.5rem;
}

.detail-grid,
.kiosk-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.7fr);
  gap: 1.25rem;
}

.detail-list {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 0.65rem 1rem;
  margin: 0;
}

.detail-list dt {
  color: var(--muted);
  font-weight: 600;
}

.detail-list dd {
  margin: 0;
}

.event-list,
.result-list {
  display: grid;
  gap: 0.75rem;
}

.event-row,
.result-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem;
}

.event-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.camera-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: #111827;
  border-radius: 8px;
}

.camera-frame video,
.camera-frame img,
.camera-frame canvas {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.camera-frame img,
.camera-frame canvas {
  display: none;
}

.camera-frame.has-preview video {
  display: none;
}

.camera-frame.has-preview img {
  display: block;
}

.camera-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1rem 0;
}

.result-card h3 {
  font-size: 1rem;
  margin: 0 0 0.35rem;
}

.result-card p {
  color: var(--muted);
  margin-bottom: 0.75rem;
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.error-page {
  max-width: 620px;
  margin: 10vh auto;
  text-align: center;
}

@media (max-width: 992px) {
  .stats-grid,
  .upload-grid,
  .detail-grid,
  .kiosk-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .page-header,
  .section-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .stats-grid,
  .upload-grid,
  .detail-grid,
  .kiosk-grid {
    grid-template-columns: 1fr;
  }

  .detail-list {
    grid-template-columns: 1fr;
  }
}