/* ──────────────────────────────────────────────────────────────────────────────── */
/* Mobile Responsive Styles                                                              */
/* ──────────────────────────────────────────────────────────────────────────────── */

/* Mobile-first responsive breakpoints:
   - <640px: phone — single column, bottom tab bar, touch-optimized
   - 640–1024px: tablet — two column where useful, top nav
   - >1024px: desktop — full layout, sidebar where appropriate
*/

/* ─── Phone (<640px) ───────────────────────────────────────────────────────────── */

@media (max-width: 639px) {
  /* Typography */
  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }
  h3 { font-size: 1.125rem; }

  /* Page titles */
  .page-title {
    font-size: 1.5rem;
    margin-bottom: 16px;
  }

  /* Cards - full width */
  .card {
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    margin-bottom: var(--space-sm);
  }

  /* Grid - single column */
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  /* Buttons - larger touch targets */
  .btn {
    min-height: 48px;
    min-width: 48px;
    padding: var(--space-md);
  }

  .btn.small {
    min-height: 40px;
    min-width: 40px;
    padding: var(--space-sm) var(--space-md);
  }

  /* Tables - convert to cards on mobile */
  .table-container {
    border: none;
  }

  table {
    display: none;
  }

  .mobile-cards {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
  }

  .mobile-card {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
  }

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

  .mobile-card-title {
    font-weight: 600;
    color: var(--text-primary);
  }

  .mobile-card-content {
    display: none;
    padding-top: var(--space-sm);
    border-top: 1px solid var(--border);
  }

  .mobile-card-content.expanded {
    display: block;
  }

  .mobile-card.expanded .mobile-card-content {
    display: block;
  }

  /* Leaderboard mobile cards */
  .leaderboard-mobile-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-sm);
    cursor: pointer;
    transition: background-color var(--transition-fast);
  }

  .leaderboard-mobile-card:active {
    background-color: var(--bg-tertiary);
  }

  .leaderboard-mobile-rank {
    font-size: 1.25rem;
    font-weight: 700;
    min-width: 40px;
    text-align: center;
  }

  .leaderboard-mobile-rank.rank-1 { color: var(--warning); }
  .leaderboard-mobile-rank.rank-2 { color: #94a3b8; }
  .leaderboard-mobile-rank.rank-3 { color: #b45309; }

  .leaderboard-mobile-info {
    flex: 1;
  }

  .leaderboard-mobile-name {
    font-weight: 600;
    color: var(--text-primary);
  }

  .leaderboard-mobile-rating {
    font-size: 0.875rem;
    color: var(--text-muted);
  }

  .leaderboard-mobile-trend {
    font-size: 1.25rem;
  }

  .leaderboard-mobile-details {
    max-height: 0;
    overflow: hidden;
    transition: max-height 250ms ease-out, padding 250ms ease-out;
    padding: 0;
    border-top: none;
  }

  .leaderboard-mobile-details.expanded {
    max-height: 300px;
    padding-top: var(--space-sm);
    margin-top: var(--space-sm);
    border-top: 1px solid var(--border);
  }

  .leaderboard-mobile-stat {
    display: flex;
    justify-content: space-between;
    padding: var(--space-xs) 0;
    font-size: 0.875rem;
  }

  .leaderboard-mobile-stat-label {
    color: var(--text-muted);
  }

  .leaderboard-mobile-stat-value {
    color: var(--text-primary);
    font-weight: 500;
  }

  /* Win probability sparkline — full width on mobile */
  .win-prob-section {
    margin-top: 8px;
  }

  .win-prob-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .critical-moment-nav {
    font-size: 0.75rem;
  }

  /* Commentary — scrollable on mobile if text is long */
  .commentary-bar {
    flex-wrap: wrap;
    gap: 6px;
  }

  .commentary-content {
    max-height: 60px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Replay viewer mobile */
  .replay-page .page-title {
    font-size: 1.25rem;
    margin-bottom: 12px;
  }

  .replay-layout {
    flex-direction: column;
    gap: 12px;
  }

  .replay-main {
    order: 1;
  }

  .replay-sidebar {
    order: 2;
    width: 100%;
  }

  .canvas-wrapper {
    padding: 0 !important;
    border-radius: var(--radius-md);
    /* Square viewport so canvas fills the full phone width */
    width: 100%;
    aspect-ratio: 1;
    max-height: none !important;
    overflow: hidden;
  }

  /* Mobile replay controls - compact bar below canvas */
  .mobile-replay-controls {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
  }

  .mobile-playback-bar {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
  }

  .mobile-playback-bar .btn {
    flex: 1;
    min-height: 44px;
    font-size: 0.875rem;
  }

  .mobile-speed-display {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: var(--space-xs);
  }

  /* Mobile event timeline - horizontal scrollable ribbon */
  .mobile-event-timeline {
    display: flex;
    overflow-x: auto;
    gap: var(--space-xs);
    padding: var(--space-sm);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .mobile-event-timeline::-webkit-scrollbar {
    display: none;
  }

  .mobile-event-dot {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-tertiary);
    border-radius: 50%;
    font-size: 0.75rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
  }

  .mobile-event-dot.active {
    background-color: var(--accent);
    color: white;
  }

  .mobile-event-dot:active {
    transform: scale(0.95);
  }

  /* Mobile view mode toggle - floating button */
  .mobile-view-mode-toggle {
    position: fixed;
    bottom: 80px;
    right: 16px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background-color: var(--accent);
    color: white;
    border: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
  }

  /* Mobile debug telemetry - slide-up sheet */
  .mobile-debug-sheet {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--bg-secondary);
    border-top-left-radius: var(--radius-xl);
    border-top-right-radius: var(--radius-xl);
    padding: var(--space-md);
    transform: translateY(100%);
    transition: transform var(--transition-normal);
    z-index: 200;
    max-height: 50vh;
    overflow-y: auto;
  }

  .mobile-debug-sheet.expanded {
    transform: translateY(0);
  }

  .mobile-debug-handle {
    width: 40px;
    height: 4px;
    background-color: var(--border);
    border-radius: 2px;
    margin: 0 auto var(--space-md);
  }

  /* Sandbox desktop required message */
  .sandbox-mobile-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl);
    text-align: center;
    min-height: 60vh;
  }

  .sandbox-mobile-message h2 {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
  }

  .sandbox-mobile-message p {
    margin-bottom: var(--space-lg);
  }

  .sandbox-mobile-qr {
    width: 200px;
    height: 200px;
    background-color: white;
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-bottom: var(--space-md);
  }

  .sandbox-mobile-link {
    display: inline-block;
    padding: var(--space-md) var(--space-lg);
    background-color: var(--accent);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 600;
  }

  /* Match cards mobile */
  .match-card {
    border-radius: var(--radius-md);
    padding: var(--space-md);
  }

  .match-participants {
    flex-direction: column;
    gap: var(--space-xs);
  }

  .participant {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    flex-shrink: 1;
    min-width: 0;
    padding: var(--space-xs) var(--space-sm);
  }

  .participant-name {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .participant-score {
    flex-shrink: 0;
    margin-left: var(--space-xs);
  }

  .winner-badge {
    flex-shrink: 0;
    margin-left: var(--space-xs);
  }

  .match-footer {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-sm);
  }

  .match-footer .btn {
    margin-left: 0;
    width: 100%;
  }

  /* Bot profile mobile */
  .profile-header {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
    gap: var(--space-sm);
  }

  .profile-header-main {
    text-align: center;
  }

  #share-card-btn {
    width: 100%;
  }

  .profile-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Bot cards mobile */
  .bots-grid {
    grid-template-columns: 1fr;
  }

  .bot-card {
    padding: var(--space-md);
  }

  /* Watch/Compete hub cards */
  .watch-grid,
  .compete-grid {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .watch-card,
  .compete-card {
    padding: var(--space-md);
  }

  .card-icon {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
  }

  .watch-card h2,
  .compete-card h2 {
    font-size: 1.125rem;
  }

  /* Steps section */
  .steps {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .step-number {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  /* Form inputs */
  input[type="text"],
  input[type="number"],
  input[type="email"],
  input[type="password"],
  input[type="url"],
  select,
  textarea {
    font-size: 16px; /* Prevent iOS zoom on focus */
  }

  /* Panel mobile */
  .panel {
    border-radius: var(--radius-md);
    padding: var(--space-md);
  }

  .panel-header {
    font-size: 0.875rem;
    margin-bottom: var(--space-sm);
  }

  /* Loading state */
  .loading {
    padding: var(--space-lg);
  }

  /* Error state */
  .error {
    padding: var(--space-md);
    border-radius: var(--radius-md);
  }

  /* Empty state */
  .empty-state {
    padding: var(--space-lg);
  }

  /* Pagination */
  .pagination {
    display: flex;
    gap: var(--space-sm);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .pagination .btn {
    flex-shrink: 0;
  }
}

/* ─── Tablet (640–1024px) ───────────────────────────────────────────────────────── */

@media (min-width: 640px) and (max-width: 1023px) {
  /* Two column layout where useful */
  .grid-2, .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Replay viewer - two column on tablet */
  .replay-layout {
    flex-direction: row;
  }

  .replay-sidebar {
    width: 280px;
  }

  /* Leaderboard - show table on tablet */
  .leaderboard-table {
    display: table;
  }

  .mobile-cards {
    display: none;
  }

  /* Hub cards */
  .watch-grid,
  .compete-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Bot cards */
  .bots-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Profile grid */
  .profile-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Hide mobile-specific elements */
  .mobile-replay-controls,
  .mobile-event-timeline,
  .mobile-view-mode-toggle,
  .mobile-debug-sheet,
  .sandbox-mobile-message {
    display: none;
  }
}

/* ─── Desktop (>1024px) ────────────────────────────────────────────────────────── */

@media (min-width: 1024px) {
  /* Full layout with sidebar where appropriate */

  /* Hide mobile-specific elements */
  .mobile-bottom-nav,
  .mobile-menu-toggle,
  .mobile-menu,
  .mobile-replay-controls,
  .mobile-event-timeline,
  .mobile-view-mode-toggle,
  .mobile-debug-sheet,
  .sandbox-mobile-message,
  .leaderboard-mobile-card,
  .mobile-cards {
    display: none !important;
  }

  /* Show desktop nav */
  .desktop-nav {
    display: flex;
  }

  /* Replay viewer sidebar */
  .replay-sidebar {
    width: 300px;
  }

  /* Sandbox layout */
  .sandbox-layout {
    flex-direction: row;
  }

  .sandbox-controls-col {
    width: 320px;
  }
}

/* ─── Touch-specific styles ──────────────────────────────────────────────────────── */

@media (hover: none) and (pointer: coarse) {
  /* Touch device optimizations */

  /* Larger tap targets */
  .btn,
  button,
  a {
    min-height: 44px;
    min-width: 44px;
  }

  /* Disable hover effects on touch */
  .btn:hover,
  .nav-link:hover,
  .bot-card:hover,
  .link-card:hover {
    transform: none;
    box-shadow: none;
  }

  /* Active states for touch feedback */
  .btn:active {
    transform: scale(0.98);
  }

  /* Smooth scrolling */
  html {
    -webkit-overflow-scrolling: touch;
  }

  /* Disable text selection on UI elements */
  .btn,
  .nav-link,
  .mobile-event-dot {
    user-select: none;
    -webkit-user-select: none;
  }

  /* Prevent callout on long press */
  .btn,
  .nav-link {
    -webkit-touch-callout: none;
  }
}

/* ─── Orientation-specific styles ───────────────────────────────────────────────── */

@media (orientation: landscape) and (max-height: 600px) {
  /* Landscape phone - more compact layout */

  .page-title {
    font-size: 1.25rem;
    margin-bottom: 8px;
  }

  .canvas-wrapper {
    max-height: 50vh;
    overflow: auto;
  }

  .mobile-bottom-nav {
    padding: 4px 0;
  }

  .mobile-bottom-nav .nav-link {
    padding: 4px 8px;
    font-size: 0.625rem;
  }

  #app {
    padding-bottom: 50px;
  }
}

/* ─── Reduced motion ────────────────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ─── High contrast mode ─────────────────────────────────────────────────────────── */

@media (prefers-contrast: more) {
  :root {
    --border: #64748b;
    --bg-tertiary: #475569;
  }

  .btn {
    border: 2px solid currentColor;
  }

  .nav-link.active {
    border: 2px solid var(--accent);
  }
}

/* ─── Dark mode system preference ─────────────────────────────────────────────────── */

@media (prefers-color-scheme: light) {
  /* The app uses dark theme by default, but we respect system preference
     if someone wants to override via custom CSS */
}