:root {
  --color-bg: #0f1117;
  --color-surface: #1a1d27;
  --color-surface-raised: #222636;
  --color-border: #2e3244;
  --color-text: #e4e6f0;
  --color-text-muted: #8b8fa3;
  --color-accent: #6c8cff;
  --color-accent-hover: #829dff;
  --color-accent-bg: rgba(108, 140, 255, 0.1);
  --color-success: #4ade80;
  --color-warning: #fbbf24;
  --color-star: #fbbf24;
  --color-star-empty: #3a3e52;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --transition: 0.2s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--color-accent); text-decoration: none; }
a:hover { color: var(--color-accent-hover); }

.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner { display: flex; align-items: center; justify-content: space-between; }

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-icon { width: 32px; height: 32px; }

.nav { display: flex; gap: 24px; }

.nav-link {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-link:hover { color: var(--color-text); }

/* Hero */
.hero {
  padding: 80px 0 60px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 520px;
  margin: 0 auto 32px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
}

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

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

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn-outline:hover { background: var(--color-accent-bg); color: var(--color-accent); }

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: transparent;
}

.btn-ghost:hover { color: var(--color-text); background: var(--color-surface-raised); }

.btn-sm { padding: 6px 14px; font-size: 0.85rem; }
.btn-lg { padding: 14px 28px; font-size: 1.05rem; }

/* Cards */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 20px;
}

/* Rehearsal section */
.rehearsal-section { padding: 40px 0 60px; }

.rehearsal-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 28px;
  align-items: start;
}

.rehearsal-main { display: flex; flex-direction: column; gap: 24px; }
.rehearsal-sidebar { display: flex; flex-direction: column; gap: 20px; position: sticky; top: 80px; }

/* Form elements */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 0.9rem; font-weight: 600; margin-bottom: 6px; color: var(--color-text); }
.label-hint { font-weight: 400; color: var(--color-text-muted); }

.form-input {
  width: 100%;
  padding: 10px 14px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 0.95rem;
  font-family: var(--font);
  transition: border-color var(--transition);
}

.form-input:focus { outline: none; border-color: var(--color-accent); }
.form-input-sm { width: 80px; text-align: center; padding: 8px 10px; }
.form-textarea { resize: vertical; min-height: 80px; }

/* Presets */
.presets-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.presets-label { font-size: 0.85rem; color: var(--color-text-muted); }

/* Segments */
.segments-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 16px;
}

.segment-field { display: flex; flex-direction: column; align-items: center; gap: 6px; }

.total-time {
  text-align: center;
  padding: 12px;
  background: var(--color-accent-bg);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.form-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* Timer */
.timer-display { text-align: center; padding: 20px 0; }

.current-segment {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.timer-time {
  font-size: 3.5rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  margin-bottom: 20px;
}

.timer-progress {
  width: 100%;
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 16px;
}

.timer-progress-bar {
  height: 100%;
  background: var(--color-accent);
  border-radius: 3px;
  transition: width 0.3s linear;
  width: 100%;
}

.segment-status {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.segment-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-border);
  display: inline-block;
}

.segment-dot.active { background: var(--color-accent); }
.segment-dot.done { background: var(--color-success); }

.timer-controls { display: flex; justify-content: center; gap: 12px; }

/* Rating */
.rating-intro { color: var(--color-text-muted); margin-bottom: 20px; }

.rating-items { display: flex; flex-direction: column; gap: 16px; margin-bottom: 20px; }

.rating-item { display: flex; align-items: center; justify-content: space-between; }
.rating-label { font-weight: 500; font-size: 0.95rem; }

.rating-stars { display: flex; gap: 4px; }

.star {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-star-empty);
  cursor: pointer;
  padding: 0 2px;
  transition: color var(--transition);
  line-height: 1;
}

.star.active { color: var(--color-star); }
.star:hover, .star:focus { color: var(--color-star); }

/* Sidebar */
.sidebar-card { padding: 20px; }
.sidebar-title { font-size: 1rem; font-weight: 700; margin-bottom: 12px; }

.sidebar-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sidebar-list li {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  padding-left: 18px;
  position: relative;
}

.sidebar-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* Templates section */
.templates-section { padding: 60px 0; border-top: 1px solid var(--color-border); }

.section-title { font-size: 1.5rem; font-weight: 700; margin-bottom: 8px; }
.section-sub { color: var(--color-text-muted); margin-bottom: 28px; }

.templates-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }

.template-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.template-name { font-weight: 700; font-size: 1.05rem; }
.template-segments { font-size: 0.85rem; color: var(--color-text-muted); }
.template-actions { display: flex; gap: 8px; margin-top: 8px; }

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px dashed var(--color-border);
}

/* About section */
.about-section { padding: 60px 0; border-top: 1px solid var(--color-border); }

.about-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 28px; }

.about-block { display: flex; flex-direction: column; gap: 12px; }

.about-block p { color: var(--color-text-muted); font-size: 0.95rem; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 24px 0;
  margin-top: 40px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-text { font-size: 0.85rem; color: var(--color-text-muted); }
.footer-nav { display: flex; gap: 20px; }
.footer-nav a { font-size: 0.85rem; color: var(--color-text-muted); }
.footer-nav a:hover { color: var(--color-text); }

/* Responsive */
@media (max-width: 768px) {
  .rehearsal-layout { grid-template-columns: 1fr; }
  .rehearsal-sidebar { position: static; }
  .segments-grid { grid-template-columns: 1fr; }
  .timer-time { font-size: 2.5rem; }
  .hero { padding: 50px 0 40px; }
  .form-actions { flex-direction: column; }
  .btn { width: 100%; }
  .rating-item { flex-direction: column; align-items: flex-start; gap: 8px; }
}

@media (max-width: 480px) {
  .nav { gap: 14px; }
  .nav-link { font-size: 0.85rem; }
  .card { padding: 20px; }
  .timer-time { font-size: 2rem; }
}

/* Hidden utility */
[hidden] { display: none !important; }

/* Focus styles */
*:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Number input arrows */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  opacity: 1;
}


/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}