/* v2.5.0: Calendar Page */

.calendar-section {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-3xl);
}

.calendar-page-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.calendar-page-header h1 {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: var(--space-sm);
}

.calendar-page-header p {
  color: var(--text-muted);
  font-size: 1.0625rem;
}

/* ── Toolbar ─────────────────────────────────────── */

.calendar-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  gap: var(--space-md);
  flex-wrap: wrap;
}

.calendar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.calendar-nav-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  transition: all var(--transition);
}

.calendar-nav-btn:hover {
  background: var(--green-50);
  border-color: var(--primary);
  color: var(--primary);
}

.calendar-month-title {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text);
  min-width: 200px;
  text-align: center;
}

.calendar-today-btn {
  margin-left: var(--space-xs);
}

.calendar-view-toggle {
  display: flex;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
}

.calendar-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 36px;
  border: none;
  background: var(--bg);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
}

.calendar-toggle-btn:first-child {
  border-right: 1px solid var(--gray-200);
}

.calendar-toggle-btn:hover {
  background: var(--green-50);
  color: var(--primary);
}

.calendar-toggle-btn.active {
  background: var(--primary);
  color: white;
}

/* ── Grid View ───────────────────────────────────── */

.calendar-grid-wrapper {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.calendar-grid-header {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  background: var(--green-900);
}

.calendar-dow {
  padding: var(--space-sm) var(--space-xs);
  text-align: center;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.85);
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  background: var(--bg);
}

.calendar-day {
  min-height: 80px;
  padding: var(--space-sm);
  border-right: 1px solid var(--gray-100);
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-xs);
  transition: background var(--transition);
}

.calendar-day:nth-child(7n) {
  border-right: none;
}

.calendar-day-num {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1;
}

.calendar-day.other-month {
  background: var(--bg-alt);
}

.calendar-day.other-month .calendar-day-num {
  color: var(--gray-400);
}

.calendar-day.today {
  background: var(--green-50);
}

.calendar-day.today .calendar-day-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  font-weight: 700;
}

/* Day type backgrounds */
.calendar-day.half-day {
  background: var(--gold-50);
}

.calendar-day.closed {
  background: rgba(239, 68, 68, 0.06);
}

.calendar-day.saturday {
  background: var(--green-50);
}

.calendar-day.event-only {
  background: rgba(59, 130, 246, 0.06);
}

/* Clickable days */
.calendar-day.clickable {
  cursor: pointer;
}

.calendar-day.clickable:hover {
  background: var(--green-100);
}

.calendar-day.closed.clickable:hover {
  background: rgba(239, 68, 68, 0.12);
}

.calendar-day.half-day.clickable:hover {
  background: var(--gold-100);
}

/* Dot indicators */
.calendar-day-dots {
  display: flex;
  gap: 4px;
  margin-top: auto;
}

.calendar-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.dot-half-day {
  background: var(--gold-500);
}

.dot-closed {
  background: #ef4444;
}

.dot-event, .dot-event-only {
  background: #3b82f6;
}

.dot-saturday {
  background: var(--green-400);
}

/* ── Legend ───────────────────────────────────────── */

.calendar-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  justify-content: center;
  margin-top: var(--space-lg);
  padding: var(--space-md) 0;
}

.calendar-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ── List View ───────────────────────────────────── */

.calendar-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.calendar-list-item {
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: var(--bg);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  transition: all var(--transition);
  cursor: pointer;
}

.calendar-list-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.calendar-list-item.closed {
  border-left: 4px solid #ef4444;
}

.calendar-list-item.half-day {
  border-left: 4px solid var(--gold-500);
}

.calendar-list-item.event-only {
  border-left: 4px solid #3b82f6;
}

.calendar-list-item.saturday {
  border-left: 4px solid var(--green-400);
}

.calendar-list-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 56px;
  height: 56px;
  background: var(--green-600);
  color: white;
  border-radius: var(--radius);
  flex-shrink: 0;
}

.calendar-list-item.closed .calendar-list-date {
  background: #ef4444;
}

.calendar-list-item.half-day .calendar-list-date {
  background: var(--gold-500);
  color: var(--gray-900);
}

.calendar-list-date .month {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.calendar-list-date .day {
  font-size: 1.375rem;
  font-weight: 700;
  line-height: 1;
}

.calendar-list-info {
  flex: 1;
  min-width: 0;
}

.calendar-list-weekday {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.calendar-list-type {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
  margin-bottom: var(--space-xs);
}

.calendar-list-type.closed {
  color: #ef4444;
}

.calendar-list-type.half-day {
  color: var(--accent-dark);
}

.calendar-list-type.event-only {
  color: #3b82f6;
}

.calendar-list-info h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
}

.calendar-list-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0;
}

.calendar-list-dismissal {
  display: inline-block;
  font-size: 0.8125rem;
  color: var(--accent-dark);
  font-weight: 500;
  margin-top: var(--space-xs);
}

.calendar-list-more {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--primary);
  font-weight: 500;
  margin-left: var(--space-sm);
}

.calendar-empty {
  text-align: center;
  color: var(--text-muted);
  padding: var(--space-3xl) var(--space-xl);
  font-size: 1rem;
}

/* ── Modal ────────────────────────────────────────── */

.calendar-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.2s ease;
  padding: var(--space-lg);
}

.calendar-modal-backdrop.open {
  opacity: 1;
}

.calendar-modal {
  background: var(--bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 480px;
  max-height: 80vh;
  overflow-y: auto;
  transform: translateY(20px) scale(0.97);
  transition: transform 0.2s ease;
}

.calendar-modal-backdrop.open .calendar-modal {
  transform: translateY(0) scale(1);
}

.calendar-modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--gray-100);
}

.calendar-modal-header h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.calendar-modal-type {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
}

.calendar-modal-type.closed {
  color: #ef4444;
}

.calendar-modal-type.half-day {
  color: var(--accent-dark);
}

.calendar-modal-type.event-only {
  color: #3b82f6;
}

.calendar-modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius);
  transition: all var(--transition);
  flex-shrink: 0;
  line-height: 1;
}

.calendar-modal-close:hover {
  background: var(--gray-100);
  color: var(--text);
}

.calendar-modal-body {
  padding: var(--space-lg) var(--space-xl);
}

.calendar-modal-dismissal {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent-dark);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--gray-100);
}

.calendar-modal-dismissal svg {
  flex-shrink: 0;
}

.calendar-modal-event {
  padding: var(--space-sm) 0;
}

.calendar-modal-event + .calendar-modal-event {
  border-top: 1px solid var(--gray-100);
  padding-top: var(--space-md);
  margin-top: var(--space-sm);
}

.calendar-modal-event h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: var(--space-xs);
}

.calendar-modal-event p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

.calendar-modal-grade {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--primary);
  background: var(--green-50);
  padding: 2px 8px;
  border-radius: 4px;
  margin-top: var(--space-xs);
}

.calendar-modal-no-events {
  color: var(--text-muted);
  font-size: 0.9375rem;
  margin: 0;
}