/**
 * ============================================
 * BENTO DASHBOARD - Modular Grid System
 * ============================================
 *
 * Beautiful, responsive, drag-and-drop dashboard
 * Inspired by Apple's Bento Box design
 * Perfect auto-reflow on mobile
 */

/* ==========================================
   DASHBOARD CONTAINER
   ========================================== */

.bento-dashboard {
  width: 100%;
  max-width: var(--container-2xl);
  margin: 0 auto;
  padding: var(--space-6);
  min-height: 100vh;
}

.bento-header {
  margin-bottom: var(--space-8);
  animation: fade-in-up 0.6s var(--ease-smooth) backwards;
}

.bento-welcome {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
  letter-spacing: -0.02em;
}

.bento-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  font-weight: var(--font-normal);
}

/* ==========================================
   BENTO GRID - CSS Grid Layout
   ========================================== */

.bento-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: minmax(120px, auto);
  position: relative;
}

/* Tablet layout */
@media (max-width: 1024px) {
  .bento-grid {
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-3);
  }
}

/* Mobile layout */
@media (max-width: 640px) {
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }

  .bento-dashboard {
    padding: var(--space-4);
  }
}

/* ==========================================
   BENTO TILE - Base Component
   ========================================== */

.bento-tile {
  background: var(--color-surface);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
  cursor: pointer;
  user-select: none;
  display: flex;
  flex-direction: column;
  animation: fade-in-up 0.6s var(--ease-smooth) backwards;
}

.bento-tile:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-primary-500);
}

.bento-tile:active {
  transform: scale(0.98);
}

/* Dragging state */
.bento-tile.dragging {
  opacity: 0.5;
  cursor: grabbing;
  transform: rotate(2deg) scale(1.05);
  box-shadow: var(--shadow-2xl);
  z-index: var(--z-modal);
}

.bento-tile.drag-over {
  border: 2px dashed var(--color-primary-500);
  background-color: var(--color-primary-50);
}

/* ==========================================
   TILE SIZES - Grid Spans
   ========================================== */

/* Small tiles - 1x1 */
.tile-small {
  grid-column: span 2;
  grid-row: span 1;
}

/* Medium tiles - 2x1 */
.tile-medium {
  grid-column: span 4;
  grid-row: span 1;
}

/* Large tiles - 2x2 */
.tile-large {
  grid-column: span 4;
  grid-row: span 2;
}

/* Wide tiles - 3x1 */
.tile-wide {
  grid-column: span 6;
  grid-row: span 1;
}

/* Hero tiles - 3x2 */
.tile-hero {
  grid-column: span 6;
  grid-row: span 2;
}

/* Full width tiles */
.tile-full {
  grid-column: span 12;
  grid-row: span 1;
}

/* Responsive tile sizes */
@media (max-width: 1024px) {
  .tile-small { grid-column: span 2; }
  .tile-medium { grid-column: span 3; }
  .tile-large { grid-column: span 3; grid-row: span 2; }
  .tile-wide { grid-column: span 6; }
  .tile-hero { grid-column: span 6; grid-row: span 2; }
  .tile-full { grid-column: span 6; }
}

@media (max-width: 640px) {
  .tile-small,
  .tile-medium,
  .tile-large,
  .tile-wide,
  .tile-hero,
  .tile-full {
    grid-column: span 2;
    grid-row: span 1;
  }

  /* Keep hero tiles taller on mobile */
  .tile-hero {
    grid-row: span 2;
  }
}

/* ==========================================
   TILE HEADER
   ========================================== */

.tile-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.tile-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.tile-icon {
  font-size: var(--text-2xl);
  flex-shrink: 0;
}

.tile-actions {
  display: flex;
  gap: var(--space-2);
}

.tile-drag-handle {
  cursor: grab;
  padding: var(--space-2);
  color: var(--color-text-tertiary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  touch-action: none;
}

.tile-drag-handle:hover {
  background-color: var(--color-overlay);
  color: var(--color-text-secondary);
}

.tile-drag-handle:active {
  cursor: grabbing;
}

/* ==========================================
   TILE CONTENT
   ========================================== */

.tile-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* ==========================================
   PROGRESS TILE - Circular Progress
   ========================================== */

.progress-tile .tile-content {
  align-items: center;
  justify-content: center;
}

.progress-circle {
  position: relative;
  width: 120px;
  height: 120px;
}

.progress-circle svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}

.progress-circle-bg {
  fill: none;
  stroke: var(--color-neutral-200);
  stroke-width: 8;
}

.progress-circle-fill {
  fill: none;
  stroke: var(--color-primary-500);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 377; /* 2 * PI * 60 */
  stroke-dashoffset: 377;
  transition: stroke-dashoffset 1s var(--ease-smooth);
}

.progress-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.progress-percentage {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  line-height: 1;
}

.progress-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
}

/* ==========================================
   STREAK TILE - Gamification
   ========================================== */

.streak-tile {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  border-color: #fbbf24;
}

.streak-tile:hover {
  border-color: #f59e0b;
}

.streak-number {
  font-size: var(--text-5xl);
  font-weight: var(--font-bold);
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--space-2);
}

.streak-label {
  font-size: var(--text-lg);
  color: #92400e;
  font-weight: var(--font-medium);
}

.streak-flames {
  display: flex;
  gap: var(--space-1);
  margin-top: var(--space-3);
  font-size: var(--text-2xl);
}

/* ==========================================
   TODAY'S LESSONS TILE - Task List
   ========================================== */

.lessons-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.lesson-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--color-neutral-50);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.lesson-item:hover {
  background: var(--color-neutral-100);
  transform: translateX(4px);
}

.lesson-checkbox {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-neutral-400);
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.lesson-item.completed .lesson-checkbox {
  background: var(--color-success-500);
  border-color: var(--color-success-500);
}

.lesson-item.completed .lesson-checkbox::after {
  content: "✓";
  color: white;
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
}

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

.lesson-title {
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lesson-item.completed .lesson-title {
  text-decoration: line-through;
  color: var(--color-text-tertiary);
}

.lesson-subject {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* ==========================================
   STATS TILE - Key Metrics
   ========================================== */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  line-height: 1;
  margin-bottom: var(--space-1);
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ==========================================
   QUICK ACTIONS TILE - CTA Buttons
   ========================================== */

.quick-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.quick-action-btn {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-neutral-50);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--color-text-primary);
  transition: all var(--transition-base);
  cursor: pointer;
}

.quick-action-btn:hover {
  background: var(--color-primary-50);
  border-color: var(--color-primary-500);
  transform: translateX(4px);
}

.quick-action-icon {
  font-size: var(--text-2xl);
}

/* ==========================================
   ACHIEVEMENT TILE - Celebration
   ========================================== */

.achievement-tile {
  background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
  border-color: #60a5fa;
}

.achievement-badge {
  font-size: 64px;
  text-align: center;
  margin-bottom: var(--space-3);
  animation: badge-bounce 0.8s var(--ease-spring);
}

@keyframes badge-bounce {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.achievement-title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: #1e40af;
  text-align: center;
  margin-bottom: var(--space-2);
}

.achievement-description {
  font-size: var(--text-sm);
  color: #3b82f6;
  text-align: center;
}

/* ==========================================
   CALENDAR TILE - Upcoming Events
   ========================================== */

.calendar-events {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.calendar-event {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-3);
  border-left: 3px solid var(--color-primary-500);
  background: var(--color-neutral-50);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.event-date {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-primary-500);
  min-width: 60px;
}

.event-title {
  font-size: var(--text-base);
  color: var(--color-text-primary);
}

/* ==========================================
   ANIMATIONS - Smooth Entry
   ========================================== */

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Stagger animation for tiles */
.bento-tile:nth-child(1) { animation-delay: 0.05s; }
.bento-tile:nth-child(2) { animation-delay: 0.1s; }
.bento-tile:nth-child(3) { animation-delay: 0.15s; }
.bento-tile:nth-child(4) { animation-delay: 0.2s; }
.bento-tile:nth-child(5) { animation-delay: 0.25s; }
.bento-tile:nth-child(6) { animation-delay: 0.3s; }
.bento-tile:nth-child(7) { animation-delay: 0.35s; }
.bento-tile:nth-child(8) { animation-delay: 0.4s; }

/* ==========================================
   EMPTY STATE
   ========================================== */

.bento-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-12);
  color: var(--color-text-secondary);
}

.empty-icon {
  font-size: 64px;
  margin-bottom: var(--space-4);
  opacity: 0.5;
}

.empty-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.empty-description {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

/* ==========================================
   LOADING STATES
   ========================================== */

.tile-skeleton {
  background: linear-gradient(
    90deg,
    var(--color-neutral-100) 25%,
    var(--color-neutral-50) 50%,
    var(--color-neutral-100) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-pulse 1.5s ease-in-out infinite;
  min-height: 200px;
}

/* ==========================================
   DARK MODE OVERRIDES
   ========================================== */

@media (prefers-color-scheme: dark) {
  .lesson-item,
  .quick-action-btn,
  .calendar-event {
    background: var(--color-neutral-800);
  }

  .lesson-item:hover {
    background: var(--color-neutral-700);
  }

  .streak-tile {
    background: linear-gradient(135deg, #78350f 0%, #451a03 100%);
  }

  .streak-label {
    color: #fef3c7;
  }

  .achievement-tile {
    background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 100%);
  }

  .achievement-title {
    color: #bfdbfe;
  }

  .achievement-description {
    color: #93c5fd;
  }
}