/* ==========================================================================
   Calendar - Week view, slots, appointments
   ========================================================================== */

/* ---------- Calendar Header ---------- */
.calendar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-base);
}

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

.calendar-header__title {
  font-size: 16px;
  font-weight: 700;
  min-width: 200px;
  text-align: center;
}

/* ---------- Calendar Grid ---------- */
.calendar-grid {
  display: grid;
  grid-template-columns: 80px repeat(7, 1fr);
  gap: 1px;
  background: var(--glass-border-secondary);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.calendar-grid__header {
  font-size: 12px;
  font-weight: 600;
  text-align: center;
  padding: var(--sp-sm);
  background: var(--glass-bg);
  color: var(--muted-text);
}

.calendar-grid__header--today {
  color: var(--primary);
  font-weight: 700;
}

.calendar-grid__time {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--muted-text);
  padding: var(--sp-sm);
  background: var(--glass-bg);
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

.calendar-grid__cell {
  min-height: 60px;
  padding: var(--sp-xs);
  background: var(--glass-bg-secondary);
  position: relative;
}

.calendar-grid__cell:hover {
  background: var(--glass-bg);
}

/* ---------- Slot Cards ---------- */
.slot-card {
  padding: var(--sp-xs) var(--sp-sm);
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  margin-bottom: var(--sp-xs);
}

.slot-card--available {
  background: rgba(16, 185, 129, 0.15);
  color: #047857;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

html.dark .slot-card--available {
  color: #34D399;
}

.slot-card--available:hover {
  background: rgba(16, 185, 129, 0.25);
  transform: scale(1.02);
}

.slot-card--booked {
  background: rgba(14, 165, 233, 0.15);
  color: #0369A1;
  border: 1px solid rgba(14, 165, 233, 0.25);
}

html.dark .slot-card--booked {
  color: #38BDF8;
}

.slot-card--mine {
  background: rgba(245, 158, 11, 0.15);
  color: #92400E;
  border: 1px solid rgba(245, 158, 11, 0.25);
}

html.dark .slot-card--mine {
  color: #FBBF24;
}

.slot-card__tech {
  font-weight: 600;
}

.slot-card__time {
  font-family: var(--font-mono);
  font-size: 10px;
}

/* ---------- Appointment List ---------- */
.appointment-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.appointment-card {
  padding: var(--sp-md);
}

.appointment-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-sm);
}

.appointment-card__subject {
  font-size: 14px;
  font-weight: 600;
}

.appointment-card__details {
  font-size: 12px;
  color: var(--muted-text);
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
}

/* ---------- Slot Manager (Admin) ---------- */
.slot-manager {
  margin-top: var(--sp-xl);
}

.slot-manager__form {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-sm);
  align-items: flex-end;
}

.slot-manager__form .form-group {
  margin-bottom: 0;
}

/* ---------- Slot Booked Label ---------- */
.slot-card__booked-label {
  font-size: 10px;
  color: inherit;
}

/* ---------- Appointment Actions ---------- */
.appointment-card__actions {
  display: flex;
  gap: var(--sp-sm);
  margin-top: var(--sp-sm);
}

/* ---------- Calendar Section Spacing ---------- */
.calendar-section {
  margin-top: var(--sp-xl);
}

.calendar-section__title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: var(--sp-md);
}

/* ---------- Muted / Error Inline States ---------- */
.calendar-empty {
  font-size: 13px;
  color: var(--muted-text);
}

.calendar-error {
  font-size: 13px;
  color: var(--error);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .calendar-grid {
    grid-template-columns: 60px repeat(7, 1fr);
    font-size: 11px;
  }

  .slot-card {
    font-size: 10px;
    padding: 2px 4px;
  }

  .calendar-header {
    flex-direction: column;
    gap: var(--sp-sm);
  }
}

@media (max-width: 480px) {
  .calendar-grid {
    display: flex;
    flex-direction: column;
    gap: 0;
  }

  /* Hide the empty top-left corner header cell */
  .calendar-grid__header:first-child {
    display: none;
  }

  /* Day headers become full-width section dividers */
  .calendar-grid__header {
    text-align: left;
    font-size: 13px;
    font-weight: 700;
    padding: var(--sp-sm) var(--sp-md);
    background: var(--glass-bg);
    border-bottom: 1px solid var(--glass-border-secondary);
  }

  /* Hide the standalone time column cells; time is shown on each slot card */
  .calendar-grid__time {
    display: none;
  }

  .calendar-grid__cell {
    min-height: auto;
    padding: var(--sp-xs) var(--sp-md);
  }

  /* Hide empty cells on mobile to reduce visual noise */
  .calendar-grid__cell:empty {
    display: none;
  }
}