:root {
  --bg: #0f0f11;
  --surface: #1a1a1f;
  --surface2: #25252d;
  --border: #2e2e38;
  --accent: #6c63ff;
  --accent-hover: #7b73ff;
  --text: #e8e8f0;
  --text-muted: #8888a0;
  --error: #ff5f5f;
  --radius: 12px;
  --radius-sm: 8px;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  padding: 24px 16px 60px;
}

.container {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

h1 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  text-align: center;
  padding: 8px 0 4px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

input[type="url"],
input[type="text"],
textarea {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.95rem;
  padding: 10px 14px;
  width: 100%;
  outline: none;
  transition: border-color 0.2s;
  font-family: inherit;
  resize: vertical;
}
input:focus, textarea:focus { border-color: var(--accent); }
input::placeholder, textarea::placeholder { color: var(--text-muted); opacity: 0.6; }

/* Tabs */
.tabs {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
  margin-bottom: 4px;
}
.tab {
  background: none;
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 16px;
  transition: all 0.2s;
}
.tab:hover { border-color: var(--accent); color: var(--text); }
.tab.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.tab-content { display: flex; flex-direction: column; gap: 12px; }
.tab-content.hidden { display: none; }

/* Buttons */
.btn {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 10px 20px;
  transition: all 0.2s;
  white-space: nowrap;
}
.btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover:not(:disabled) { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* Time inputs */
.time-row { display: flex; align-items: flex-end; gap: 12px; }
.time-field { flex: 1; display: flex; flex-direction: column; gap: 6px; }
.time-sep { color: var(--text-muted); font-size: 1.2rem; padding-bottom: 10px; flex-shrink: 0; }
.time-input { font-family: 'SF Mono', 'Fira Code', monospace; font-size: 1.1rem; text-align: center; }

.hint { font-size: 0.8rem; color: var(--text-muted); }
.hint code { background: var(--surface2); border-radius: 4px; padding: 1px 5px; font-size: 0.78rem; }

.hint-box { border-radius: var(--radius-sm); font-size: 0.88rem; padding: 10px 14px; }
.error-box {
  background: color-mix(in srgb, var(--error) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--error) 40%, transparent);
  color: var(--error);
}

/* Search results */
.results-label { font-size: 0.82rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.result-item {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 12px 14px;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.result-item:hover { border-color: var(--accent); }
.result-item.selected { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, var(--surface2)); }
.result-ts { font-size: 0.78rem; font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }
.result-text { font-size: 0.9rem; color: var(--text); line-height: 1.4; }
.result-score { font-size: 0.72rem; color: var(--text-muted); }

/* Segment preview */
.segment-card { background: color-mix(in srgb, var(--accent) 8%, var(--surface)); border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
.segment-info { display: flex; align-items: center; gap: 12px; }
.segment-time { font-family: 'SF Mono', 'Fira Code', monospace; font-size: 0.95rem; font-weight: 700; color: var(--accent); }
.segment-duration { font-size: 0.8rem; color: var(--text-muted); background: var(--surface2); border-radius: 12px; padding: 2px 10px; }
.segment-text { font-size: 0.9rem; color: var(--text-muted); font-style: italic; line-height: 1.4; }

/* YouTube embed */
.yt-card { padding: 0; overflow: hidden; }
.yt-wrapper { position: relative; width: 100%; padding-bottom: 56.25%; }
.yt-wrapper iframe { position: absolute; inset: 0; width: 100%; height: 100%; border-radius: var(--radius); }

/* Format toggle */
.format-toggle { display: flex; gap: 8px; }
.format-btn {
  flex: 1;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 10px;
  transition: all 0.2s;
  text-align: center;
}
.format-btn:hover { border-color: var(--accent); color: var(--text); }
.format-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* Extract row */
.extract-row {
  display: flex;
  gap: 10px;
  align-items: center;
}
.extract-row input { flex: 1; }

/* Loading */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 24px;
  color: var(--text-muted);
  font-size: 0.9rem;
}
.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.hidden { display: none !important; }