/* ==========================================================================
   FREE SCHEDULE MAKER - TIMETABLE & SCHEDULER STYLES
   Responsive Timetable Grid, Event Cards, Daily View, Controls & Conflicts
   ========================================================================== */

/* Scheduler Shell & Toolbar */
.scheduler-shell {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: 2rem;
  overflow: hidden;
}

.scheduler-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
}

.toolbar-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.toolbar-select, .toolbar-input {
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-family: inherit;
  color: var(--text-primary);
  background-color: var(--bg-muted);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  cursor: pointer;
}

.schedule-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.875rem 1.5rem;
  background-color: var(--bg-muted);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.875rem;
}

.schedule-title-input {
  font-size: 1.25rem;
  font-weight: 700;
  border: 1px dashed transparent;
  background: transparent;
  color: var(--text-primary);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  max-width: 450px;
}

.schedule-title-input:hover, .schedule-title-input:focus {
  border-color: var(--border-strong);
  background-color: var(--bg-surface);
}

/* Conflict Alert Area */
.conflict-container {
  padding: 1rem 1.5rem;
  display: none;
}

.conflict-container.active {
  display: block;
}

.conflict-banner {
  background-color: var(--danger-bg);
  border: 1px solid var(--danger-border);
  color: var(--danger-text);
  border-radius: var(--radius-md);
  padding: 0.875rem 1.25rem;
}

.conflict-list {
  list-style: disc;
  margin-top: 0.5rem;
  margin-left: 1.5rem;
  font-size: 0.875rem;
}

/* Timetable Grid System */
.timetable-wrapper {
  overflow-x: auto;
  position: relative;
  background-color: var(--bg-surface);
  max-height: 75vh;
  overflow-y: auto;
}

.timetable-grid {
  display: grid;
  min-width: 760px;
  grid-template-columns: 80px repeat(var(--day-count, 7), minmax(130px, 1fr));
  border-bottom: 1px solid var(--border-subtle);
  user-select: none;
  position: relative;
}

.time-header-cell, .day-header-cell {
  position: sticky;
  top: 0;
  background-color: var(--bg-surface-elevated);
  border-bottom: 2px solid var(--border-medium);
  border-right: 1px solid var(--border-subtle);
  padding: 0.75rem 0.5rem;
  text-align: center;
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--text-primary);
  z-index: 10;
}

.time-header-cell {
  left: 0;
  z-index: 12;
}

.time-column-cell {
  position: sticky;
  left: 0;
  background-color: var(--bg-surface-elevated);
  border-right: 1px solid var(--border-medium);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-align: right;
  z-index: 5;
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
}

.timetable-cell {
  border-right: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  min-height: 48px;
  position: relative;
  transition: background-color 0.15s ease;
  cursor: pointer;
}

.timetable-cell:hover {
  background-color: var(--primary-50);
}

.timetable-cell.is-break {
  background-color: var(--bg-muted);
  background-image: repeating-linear-gradient(45deg, transparent, transparent 10px, var(--bg-subtle) 10px, var(--bg-subtle) 20px);
}

/* Event Blocks */
.event-card {
  position: absolute;
  box-sizing: border-box;
  border-radius: var(--radius-sm);
  padding: 0.375rem 0.5rem;
  font-size: 0.8125rem;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--event-color-border, #2563eb);
  background-color: var(--event-color-bg, #eff6ff);
  color: var(--event-color-text, #1e3a8a);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  z-index: 2;
  transition: transform 0.1s ease, box-shadow 0.1s ease;
}

.event-card:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  z-index: 4;
}

.event-card.has-conflict {
  border: 2px dashed #dc2626 !important;
  background-color: #fee2e2 !important;
  color: #991b1b !important;
}

.event-title {
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.2;
}

.event-time {
  font-size: 0.725rem;
  opacity: 0.85;
  margin-top: 0.15rem;
}

.event-location, .event-instructor {
  font-size: 0.725rem;
  opacity: 0.85;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.event-badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 0.1rem 0.35rem;
  border-radius: var(--radius-sm);
  background-color: rgba(0, 0, 0, 0.08);
  margin-top: 0.25rem;
  align-self: flex-start;
}

/* Category Colors (Accessible & High Contrast) */
.cat-blue { --event-color-bg: #dbeafe; --event-color-border: #2563eb; --event-color-text: #1e40af; }
.cat-emerald { --event-color-bg: #d1fae5; --event-color-border: #059669; --event-color-text: #065f46; }
.cat-amber { --event-color-bg: #fef3c7; --event-color-border: #d97706; --event-color-text: #92400e; }
.cat-purple { --event-color-bg: #ede9fe; --event-color-border: #7c3aed; --event-color-text: #5b21b6; }
.cat-rose { --event-color-bg: #ffe4e6; --event-color-border: #e11d48; --event-color-text: #9f1239; }
.cat-indigo { --event-color-bg: #e0e7ff; --event-color-border: #4f46e5; --event-color-text: #3730a3; }
.cat-cyan { --event-color-bg: #cffafe; --event-color-border: #0891b2; --event-color-text: #155e75; }
.cat-slate { --event-color-bg: #f1f5f9; --event-color-border: #475569; --event-color-text: #1e293b; }

[data-theme="dark"] .cat-blue { --event-color-bg: #1e3a8a; --event-color-border: #60a5fa; --event-color-text: #eff6ff; }
[data-theme="dark"] .cat-emerald { --event-color-bg: #064e3b; --event-color-border: #34d399; --event-color-text: #ecfdf5; }
[data-theme="dark"] .cat-amber { --event-color-bg: #78350f; --event-color-border: #fbbf24; --event-color-text: #fffbeb; }
[data-theme="dark"] .cat-purple { --event-color-bg: #4c1d95; --event-color-border: #a78bfa; --event-color-text: #f5f3ff; }
[data-theme="dark"] .cat-rose { --event-color-bg: #881337; --event-color-border: #fb7185; --event-color-text: #fff1f2; }
[data-theme="dark"] .cat-indigo { --event-color-bg: #312e81; --event-color-border: #818cf8; --event-color-text: #eef2ff; }
[data-theme="dark"] .cat-cyan { --event-color-bg: #164e63; --event-color-border: #22d3ee; --event-color-text: #ecfeff; }
[data-theme="dark"] .cat-slate { --event-color-bg: #334155; --event-color-border: #94a3b8; --event-color-text: #f8fafc; }

/* Daily Planner Specific Layout */
.daily-planner-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 1.5rem;
}

.daily-task-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.daily-task-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all 0.15s ease;
}

.daily-task-item.is-completed {
  opacity: 0.65;
  background-color: var(--bg-muted);
}

.daily-task-item.is-completed .task-title {
  text-decoration: line-through;
}

.task-status-btn {
  background: transparent;
  border: 2px solid var(--border-strong);
  width: 22px;
  height: 22px;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.task-status-btn.checked {
  background-color: var(--primary-600);
  border-color: var(--primary-600);
  color: #ffffff;
}

.progress-bar-container {
  width: 100%;
  height: 10px;
  background-color: var(--bg-muted);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: 0.75rem 0 1.25rem;
}

.progress-bar-fill {
  height: 100%;
  background-color: var(--primary-600);
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}

/* Stats Summary Cards */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.125rem;
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary-600);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 0.25rem;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 3.5rem 1.5rem;
  background-color: var(--bg-surface);
  border-radius: var(--radius-md);
}

.empty-state-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1.25rem;
  color: var(--text-muted);
}

.empty-state h3 {
  margin-bottom: 0.5rem;
}

.empty-state p {
  max-width: 420px;
  margin: 0 auto 1.5rem;
}

/* Form Helper Rows */
.color-picker-group {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.color-option-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
}

.color-option-btn.active {
  border-color: var(--text-primary);
  transform: scale(1.15);
}

@media (max-width: 860px) {
  .daily-planner-grid {
    grid-template-columns: 1fr;
  }
}