/* mobile-arena.css — ChessKidoo Arena Mobile Optimization
   Breakpoints: 900px → 768px → 600px → 480px → 390px
   Covers: board sizing, eval bar, side panels, game cards, modals
   ─────────────────────────────────────────────────────────── */

/* ═══════════════════════════════════════════════════════════
   BASE TOUCH FOUNDATIONS
   ═══════════════════════════════════════════════════════════ */
#arena-page {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
#arena-page * {
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

/* ═══════════════════════════════════════════════════════════
   900px — TABLETS LANDSCAPE
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 900px) {
  /* Arena header compact */
  .arena-header {
    padding: 12px 18px;
  }
  .arena-header-title {
    font-size: 1.1rem;
  }

  /* Game cards grid: 2 columns */
  .arena-cards-grid,
  .game-cards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  /* Game layout: stack board + side panel */
  .arena-game-layout,
  .game-layout {
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }
  .arena-side-panel,
  .game-side-panel {
    width: 100%;
    max-width: 520px;
  }

  /* Chess board sizing */
  .chess-board-wrap,
  .chessboard-container,
  #chessboard,
  #puzzleBoard,
  #engineBoard {
    width: min(460px, 90vw) !important;
    height: min(460px, 90vw) !important;
  }
}

/* ═══════════════════════════════════════════════════════════
   768px — TABLETS PORTRAIT
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  /* ── Header ── */
  .arena-header {
    padding: 10px 14px;
    flex-wrap: wrap;
    gap: 8px;
  }
  .arena-header-title {
    font-size: 1rem;
  }
  .arena-header-back {
    min-height: 40px;
    padding: 8px 14px;
  }

  /* ── Main container: no side padding ── */
  .arena-container,
  #arena-page .container {
    padding: 12px 12px;
  }

  /* ── Game cards: 2-col ── */
  .arena-cards-grid,
  .game-cards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  /* ── Game card ── */
  .game-card {
    padding: 16px 12px;
  }
  .game-card-icon {
    font-size: 2rem;
  }
  .game-card-title {
    font-size: 1rem;
  }
  .game-card-desc {
    font-size: 0.8rem;
  }

  /* ── Board ── */
  .chess-board-wrap,
  .chessboard-container,
  #chessboard,
  #puzzleBoard,
  #engineBoard {
    width: min(380px, 92vw) !important;
    height: min(380px, 92vw) !important;
  }

  /* ── Game layout stacked ── */
  .arena-game-layout,
  .game-layout {
    flex-direction: column;
    align-items: center;
    gap: 14px;
    padding: 12px 10px;
  }
  .arena-side-panel,
  .game-side-panel {
    width: 100%;
    max-width: 100%;
  }

  /* ── Eval bar: horizontal when board is on top ── */
  .eval-bar-container,
  .eval-bar-wrap {
    flex-direction: row !important;
    width: min(380px, 92vw) !important;
    height: 10px !important;
    margin: 0 auto 8px !important;
  }
  .eval-bar,
  .eval-bar-inner {
    height: 10px !important;
    width: auto !important;
  }

  /* ── Move list panel ── */
  .move-list-panel,
  .moves-panel {
    max-height: 200px;
    overflow-y: auto;
  }

  /* ── Analysis / info panel ── */
  .arena-info-panel {
    padding: 12px 14px;
  }
  .eval-score {
    font-size: 1.4rem;
  }

  /* ── Post-game report: single column ── */
  .pgr-grid,
  .post-game-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  /* ── Modal: full screen bottom sheet ── */
  .arena-modal-overlay {
    align-items: flex-end;
    padding: 0;
  }
  .arena-modal {
    width: 100% !important;
    max-width: 100% !important;
    border-radius: 20px 20px 0 0 !important;
    max-height: 90dvh;
    overflow-y: auto;
    margin: 0;
  }
  .arena-modal-header {
    position: sticky;
    top: 0;
    z-index: 2;
    background: var(--arena-surface, #111418);
    border-radius: 20px 20px 0 0;
    padding: 16px 20px 12px;
  }

  /* ── Puzzle controls ── */
  .puzzle-controls,
  .pz-controls {
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
  }
  .puzzle-controls button,
  .pz-btn {
    min-height: 44px;
    flex: 1;
    min-width: 100px;
    font-size: 0.82rem;
  }

  /* ── Player clocks ── */
  .pv-clock-row {
    padding: 6px 10px;
  }
  .pv-clock {
    font-size: 1.1rem;
    padding: 4px 12px;
    min-width: 70px;
  }

  /* ── Time control buttons ── */
  .pv-tc-btn {
    padding: 6px 10px;
    min-height: 36px;
  }

  /* ── Stats banner ── */
  .gt-stats-banner {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }
  .gt-stat-card {
    padding: 12px 10px;
  }

  /* ── Commentary feed ── */
  .commentary-line {
    padding: 10px 12px;
  }
  .commentary-text {
    font-size: 0.8rem;
  }
}

/* ═══════════════════════════════════════════════════════════
   600px — PHONES LANDSCAPE / STANDARD
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 600px) {
  /* ── Game cards: 2-col compact ── */
  .arena-cards-grid,
  .game-cards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }
  .game-card {
    padding: 14px 10px;
  }
  .game-card-icon {
    font-size: 1.7rem;
  }
  .game-card-title {
    font-size: 0.9rem;
  }
  .game-card-desc {
    font-size: 0.75rem;
  }

  /* ── Board ── */
  #chessboard,
  #puzzleBoard,
  #engineBoard,
  .chess-board-wrap,
  .chessboard-container {
    width: min(320px, 94vw) !important;
    height: min(320px, 94vw) !important;
  }

  /* ── Eval bar ── */
  .eval-bar-container,
  .eval-bar-wrap {
    width: min(320px, 94vw) !important;
  }

  /* ── Move list ── */
  .move-list-panel,
  .moves-panel {
    max-height: 160px;
  }
  .move-entry {
    font-size: 0.8rem;
    padding: 3px 6px;
  }

  /* ── Opening trainer grid ── */
  .ot-grid {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  /* ── Stats banner ── */
  .gt-stats-banner {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ═══════════════════════════════════════════════════════════
   480px — STANDARD PHONES
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 480px) {
  /* ── Header ── */
  .arena-header {
    padding: 8px 12px;
  }
  .arena-header-title {
    font-size: 0.9rem;
  }

  /* ── Container ── */
  .arena-container,
  #arena-page .container {
    padding: 10px 8px;
  }

  /* ── Board ── */
  #chessboard,
  #puzzleBoard,
  #engineBoard,
  .chess-board-wrap,
  .chessboard-container {
    width: min(288px, 96vw) !important;
    height: min(288px, 96vw) !important;
  }
  .eval-bar-container,
  .eval-bar-wrap {
    width: min(288px, 96vw) !important;
  }

  /* ── Game cards: 2-col very compact ── */
  .game-card {
    padding: 12px 8px;
    gap: 8px;
  }
  .game-card-icon {
    font-size: 1.5rem;
  }
  .game-card-title {
    font-size: 0.85rem;
  }
  .game-card-desc {
    display: none;
  }

  /* ── Puzzle controls ── */
  .puzzle-controls button,
  .pz-btn {
    font-size: 0.78rem;
    padding: 8px 12px;
    min-width: 80px;
  }

  /* ── Post-game sections ── */
  .pgr-section-title {
    font-size: 0.9rem;
  }
  .pgr-stat-val {
    font-size: 1.2rem;
  }

  /* ── Timer ── */
  .pv-clock {
    font-size: 1rem;
    min-width: 60px;
    padding: 3px 8px;
  }

  /* ── Commentary ── */
  .commentary-line {
    padding: 8px 10px;
    gap: 8px;
  }
  .commentary-icon {
    font-size: 0.95rem;
  }
  .commentary-text {
    font-size: 0.77rem;
  }

  /* ── Stats banner: 2-col ── */
  .gt-stats-banner {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
  }
  .gt-stat-card {
    padding: 10px 8px;
  }
  .gt-stat-val {
    font-size: 1.1rem;
  }

  /* ── Move game form ── */
  .gt-form-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

/* ═══════════════════════════════════════════════════════════
   390px — SMALL PHONES
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 390px) {
  #chessboard,
  #puzzleBoard,
  #engineBoard,
  .chess-board-wrap,
  .chessboard-container {
    width: min(270px, 98vw) !important;
    height: min(270px, 98vw) !important;
  }
  .eval-bar-container,
  .eval-bar-wrap {
    width: min(270px, 98vw) !important;
  }
  .arena-cards-grid,
  .game-cards-grid {
    grid-template-columns: 1fr 1fr;
    gap: 6px;
  }
  .game-card {
    padding: 10px 6px;
  }
  .game-card-icon {
    font-size: 1.3rem;
  }
  .game-card-title {
    font-size: 0.78rem;
  }
  .arena-header-title {
    font-size: 0.82rem;
  }
  .gt-stats-banner {
    grid-template-columns: repeat(2, 1fr);
    gap: 4px;
  }
}

/* ═══════════════════════════════════════════════════════════
   iOS SAFE AREA
   ═══════════════════════════════════════════════════════════ */
@supports (padding: max(0px)) {
  .arena-header {
    padding-top: max(10px, env(safe-area-inset-top));
    padding-left: max(14px, env(safe-area-inset-left));
    padding-right: max(14px, env(safe-area-inset-right));
  }
  #arena-page {
    padding-bottom: max(0px, env(safe-area-inset-bottom));
  }
  @media (max-width: 768px) {
    .arena-modal {
      padding-bottom: max(16px, env(safe-area-inset-bottom));
    }
  }
}

/* ═══════════════════════════════════════════════════════════
   TOUCH DEVICE — DISABLE HOVER EFFECTS
   ═══════════════════════════════════════════════════════════ */
@media (hover: none) and (pointer: coarse) {
  .game-card:hover,
  .arena-header-back:hover,
  .puzzle-controls button:hover,
  .pz-btn:hover,
  .pv-tc-btn:hover,
  .move-entry:hover,
  .commentary-line:hover {
    transform: none !important;
    box-shadow: none !important;
    background: unset;
  }
  .game-card:active {
    transform: scale(0.97);
    opacity: 0.88;
    transition: transform 0.1s, opacity 0.1s;
  }
  .puzzle-controls button:active,
  .pz-btn:active {
    transform: scale(0.96);
    opacity: 0.8;
  }
}

/* ═══════════════════════════════════════════════════════════
   LANDSCAPE PHONE (short viewport)
   ═══════════════════════════════════════════════════════════ */
@media (max-height: 500px) and (orientation: landscape) {
  .arena-header {
    padding: 6px 12px;
  }
  #chessboard,
  #puzzleBoard,
  #engineBoard,
  .chess-board-wrap,
  .chessboard-container {
    width: min(240px, 45vw) !important;
    height: min(240px, 45vw) !important;
  }
  .arena-game-layout,
  .game-layout {
    flex-direction: row;
    align-items: flex-start;
  }
  .arena-side-panel,
  .game-side-panel {
    width: calc(100% - min(240px, 45vw) - 16px);
    max-height: calc(100dvh - 60px);
    overflow-y: auto;
  }
  .eval-bar-container,
  .eval-bar-wrap {
    flex-direction: column !important;
    width: 10px !important;
    height: min(240px, 45vw) !important;
    margin: 0 8px 0 0 !important;
  }
  .move-list-panel,
  .moves-panel {
    max-height: 150px;
  }
}