:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --accent: #38bdf8;
  --accent-hover: #0ea5e9;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --border: #334155;
  --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  padding-bottom: 40px;
}

header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-area h1 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--accent);
}

.badge {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 4px;
  text-transform: uppercase;
}
.badge-primary { background-color: rgba(56, 189, 248, 0.2); color: var(--accent); }
.badge-success { background-color: rgba(16, 185, 129, 0.2); color: var(--success); }
.badge-warning { background-color: rgba(245, 158, 11, 0.2); color: var(--warning); }
.badge-danger { background-color: rgba(239, 68, 68, 0.2); color: var(--danger); }
.badge-secondary { background-color: rgba(148, 163, 184, 0.2); color: var(--text-secondary); }

.container {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1rem;
}

/* Nav tabs */
.nav-tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}

.tab-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1rem;
  padding: 0.75rem 1.25rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

/* Cards & Layout */
.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--card-shadow);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  transition: all 0.2s;
}

.btn-primary { background-color: var(--accent); color: #000; }
.btn-primary:hover { background-color: var(--accent-hover); }
.btn-danger { background-color: var(--danger); color: #fff; }
.btn-success { background-color: var(--success); color: #fff; }
.btn-outline { background: transparent; border-color: var(--border); color: var(--text-primary); }
.btn-outline:hover { background-color: var(--bg-tertiary); }
.btn-sm { padding: 0.25rem 0.5rem; font-size: 0.75rem; }

/* Watermark & Monitor */
.watermark-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.watermark-box {
  background-color: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
}

.watermark-box .title {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.watermark-box .value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
}

/* Level Meter */
.meter-container {
  margin: 1rem 0;
}
.meter-bar {
  height: 8px;
  background-color: var(--bg-primary);
  border-radius: 4px;
  overflow: hidden;
}
.meter-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #10b981, #f59e0b, #ef4444);
  transition: width 0.05s ease-out;
}

/* Subtitles Box */
.subtitles-box {
  background-color: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  height: 350px;
  overflow-y: auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.subtitle-item {
  padding: 0.75rem;
  border-radius: 6px;
  background-color: var(--bg-secondary);
  border-left: 3px solid var(--accent);
}

.subtitle-partial {
  border-left-color: var(--warning);
  opacity: 0.85;
  font-style: italic;
}

.speaker-tag {
  font-weight: 600;
  color: var(--accent);
  font-size: 0.875rem;
  margin-right: 0.5rem;
}

.timestamp {
  font-size: 0.75rem;
  color: var(--text-secondary);
  float: right;
}

/* Transcript & Seek */
.transcript-item {
  padding: 0.75rem;
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}
.transcript-item:hover {
  background-color: rgba(56, 189, 248, 0.05);
}
.transcript-highlight {
  background-color: rgba(245, 158, 11, 0.2) !important;
  border-left: 4px solid var(--warning);
}

/* Tables */
.action-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

.action-table th, .action-table td {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  text-align: left;
}

.action-table th {
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Evidence links */
.evidence-link {
  color: var(--accent);
  text-decoration: underline;
  cursor: pointer;
}
.evidence-link:hover {
  color: var(--accent-hover);
}

/* Speaker review */
.speaker-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1rem;
}
.speaker-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
}
.speaker-name-row {
  display: flex;
  gap: 0.5rem;
  margin: 0.75rem 0;
}
.speaker-name-input {
  flex: 1;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 0.4rem 0.6rem;
  border-radius: 4px;
}
.mini-audio {
  width: 100%;
  height: 32px;
  margin-top: 0.25rem;
}