:root {
  --primary: #1F4E79;
  --primary-light: #2B6CB0;
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-lg: 0 4px 12px rgba(0,0,0,0.1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ─── Header ────────────────────────────────────────────────────────────── */

.header {
  background: var(--primary);
  color: #fff;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-title {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.3px;
}

.header-meta {
  font-size: 0.85rem;
  opacity: 0.9;
  text-align: right;
  line-height: 1.4;
}

.header-meta .turnus-badge {
  display: inline-block;
  background: rgba(255,255,255,0.2);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
  margin-left: 6px;
}

/* ─── Main ──────────────────────────────────────────────────────────────── */

.main {
  flex: 1;
  padding: 16px;
  padding-bottom: 80px;
  max-width: 700px;
  margin: 0 auto;
  width: 100%;
}

.day-info {
  margin-bottom: 16px;
}

.day-info .ferien-msg {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
  font-size: 1.1rem;
}

.loading {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
}

/* ─── Lesson Cards ──────────────────────────────────────────────────────── */

.lesson-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  margin-bottom: 12px;
  border-left: 4px solid var(--danger);
  transition: box-shadow 0.2s;
}

.lesson-card:hover {
  box-shadow: var(--shadow-lg);
}

.lesson-card.status-unterrichtet {
  border-left-color: var(--success);
}

.lesson-card.status-in_arbeit {
  border-left-color: var(--warning);
}

.lesson-card.status-geplant {
  border-left-color: var(--danger);
}

.lesson-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 8px;
}

.lesson-time {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.lesson-room {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--bg);
  padding: 2px 8px;
  border-radius: 4px;
}

.lesson-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.lesson-subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.lesson-thema {
  font-size: 0.85rem;
  color: var(--text);
  margin-bottom: 8px;
  padding: 8px 10px;
  background: #f1f5f9;
  border-radius: 6px;
  line-height: 1.4;
}

.lesson-thema-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 3px;
}

.lesson-bericht {
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 10px;
  font-size: 0.85rem;
  line-height: 1.5;
  color: #1e40af;
  cursor: pointer;
  position: relative;
  transition: background 0.15s;
}

.lesson-bericht:hover {
  background: #dbeafe;
}

.lesson-bericht::after {
  content: '📋';
  position: absolute;
  top: 8px;
  right: 10px;
  font-size: 1rem;
}

.lesson-bericht.copied {
  background: #dcfce7;
  border-color: #86efac;
  color: var(--success);
}

.lesson-bericht.copied::after {
  content: '✓';
}

/* ─── Actions ───────────────────────────────────────────────────────────── */

.lesson-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.status-btn {
  border: none;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  opacity: 0.6;
}

.status-btn:hover {
  opacity: 1;
}

.status-btn.active {
  opacity: 1;
  box-shadow: 0 0 0 2px var(--primary);
}

.status-btn[data-status="geplant"] {
  background: #fee2e2;
  color: #991b1b;
}

.status-btn[data-status="in_arbeit"] {
  background: #fef3c7;
  color: #92400e;
}

.status-btn[data-status="unterrichtet"] {
  background: #dcfce7;
  color: #166534;
}

/* ─── Navigation ────────────────────────────────────────────────────────── */

.nav-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  display: flex;
  padding: 8px 16px;
  padding-bottom: max(8px, env(safe-area-inset-bottom));
  justify-content: center;
  gap: 4px;
  z-index: 100;
}

.nav-btn {
  border: none;
  background: transparent;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s;
}

.nav-btn:hover {
  background: var(--bg);
}

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

/* ─── Toast ─────────────────────────────────────────────────────────────── */

.toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: #1e293b;
  color: #fff;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 0.85rem;
  box-shadow: var(--shadow-lg);
  transition: opacity 0.3s, transform 0.3s;
  z-index: 200;
}

.toast.hidden {
  opacity: 0;
  transform: translateX(-50%) translateY(10px);
  pointer-events: none;
}

/* ─── Week View ─────────────────────────────────────────────────────────── */

.week-view {
  padding: 0;
}

.week-day {
  margin-bottom: 20px;
}

.week-day-header {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 10px;
}

.week-day-header.today {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.no-lessons {
  text-align: center;
  color: var(--text-muted);
  padding: 30px;
  font-size: 0.9rem;
}

/* ─── Responsive ────────────────────────────────────────────────────────── */

@media (max-width: 480px) {
  .header { padding: 12px 16px; }
  .main { padding: 12px; padding-bottom: 80px; }
  .lesson-card { padding: 14px; }
  .lesson-actions { gap: 4px; }
  .status-btn { padding: 5px 10px; font-size: 0.72rem; }
}