:root {
      --bg-primary: #1a1a2e;
      --bg-secondary: #16213e;
      --bg-card: #0f3460;
      --accent: #e94560;
      --text-primary: #eee;
      --text-secondary: #888;
      --border: #2a2a4a;
      --forest: #228B22;
      --plains: #DAA520;
      --mountain: #708090;
      --river: #4169E1;
      --settlement: #CD853F;
      --gold: #FFD700;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      background: var(--bg-primary);
      color: var(--text-primary);
      min-height: 100dvh;
      min-height: -webkit-fill-available;
      overflow: hidden;
      touch-action: none;
      -webkit-tap-highlight-color: transparent;
      -webkit-user-select: none;
      user-select: none;
      overscroll-behavior: none;
    }

    /* Header — provided by shared game-header.js */
    #gameHeader { position: relative; z-index: 101; }

    /* Game Layout */
    .game-container {
      display: flex;
      height: calc(100dvh - 50px);
      height: calc(-webkit-fill-available - 50px);
      gap: 10px;
      padding: 10px;
    }

    /* Left Panel - Resources & Cards */
    .left-panel {
      width: 180px;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .panel-section {
      background: var(--bg-secondary);
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 10px;
    }

    .panel-title {
      font-size: 0.7rem;
      color: var(--text-secondary);
      text-transform: uppercase;
      margin-bottom: 8px;
      letter-spacing: 0.05em;
    }

    /* Resources */
    .resources-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 6px;
    }

    .resource {
      background: var(--bg-card);
      padding: 6px;
      border-radius: 6px;
      text-align: center;
    }

    .resource-icon { font-size: 1.2rem; }
    .resource-value {
      font-size: 0.9rem;
      font-weight: 700;
    }
    .resource-name {
      font-size: 0.6rem;
      color: var(--text-secondary);
    }

    /* Wave Info */
    .wave-info {
      text-align: center;
    }

    .wave-number {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--accent);
    }

    .wave-progress {
      height: 6px;
      background: var(--bg-card);
      border-radius: 3px;
      margin-top: 6px;
      overflow: hidden;
    }

    .wave-progress-fill {
      height: 100%;
      background: linear-gradient(90deg, var(--accent), #ff6b6b);
      transition: width 0.3s;
    }

    /* Cards Hand */
    .cards-section {
      flex: 1;
      overflow-y: auto;
    }

    .card {
      background: linear-gradient(135deg, var(--bg-card), var(--bg-secondary));
      border: 2px solid var(--border);
      border-radius: 8px;
      padding: 8px;
      margin-bottom: 6px;
      cursor: pointer;
      transition: all 0.2s;
    }

    .card:hover {
      border-color: var(--gold);
      transform: translateX(3px);
    }

    .card.joker-card {
      background: linear-gradient(135deg, #2d1b4e, var(--bg-secondary));
      border-color: #9333ea;
    }

    .card.joker-card:hover {
      border-color: #a855f7;
    }

    .jokers-section {
      border-top: 1px solid var(--border);
      padding-top: 8px;
      margin-top: 8px;
    }

    .jokers-section .panel-title {
      color: #a855f7;
    }

    .card.disabled {
      opacity: 0.5;
      cursor: not-allowed;
    }

    .card-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 4px;
    }

    .card-name {
      font-size: 0.75rem;
      font-weight: 600;
    }

    .card-cost {
      font-size: 0.65rem;
      color: var(--gold);
    }

    .card-desc {
      font-size: 0.6rem;
      color: var(--text-secondary);
    }

    /* Main Game Board */
    .board-container {
      flex: 1;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
    }

    /* Responsive cell size: min 16px, preferred based on viewport, max 28px */
    :root {
      --cell-size: clamp(16px, min(2.8vw, 2.8vh), 28px);
    }

    .game-board {
      display: grid;
      grid-template-columns: repeat(10, var(--cell-size));
      grid-template-rows: repeat(20, var(--cell-size));
      gap: 1px;
      background: var(--border);
      border: 2px solid var(--border);
      border-radius: 4px;
      padding: 2px;
    }

    .cell {
      position: relative;
      width: var(--cell-size);
      height: var(--cell-size);
      background: var(--bg-card);
      border-radius: 2px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: clamp(0.5rem, 1.5vw, 0.8rem);
      transition: background 0.1s;
    }

    .cell.forest { background: var(--forest); }
    .cell.plains { background: var(--plains); }
    .cell.mountain { background: var(--mountain); }
    .cell.river { background: var(--river); }
    .cell.settlement { background: var(--settlement); }
    .cell.wall { background: #4a4a4a; }
    .cell.cursed {
      background: linear-gradient(135deg, #2d1b4e, #1a0a2e);
      animation: cursed-pulse 2s infinite;
    }

    @keyframes cursed-pulse {
      0%, 100% { box-shadow: inset 0 0 10px rgba(128, 0, 128, 0.5); }
      50% { box-shadow: inset 0 0 20px rgba(128, 0, 128, 0.8); }
    }

    .cell.ghost {
      opacity: 0.4;
    }

    .cell.harvesting {
      animation: harvest-flash 0.5s ease-out;
    }

    @keyframes harvest-flash {
      0%, 100% { filter: brightness(1); }
      50% { filter: brightness(2); }
    }

    @keyframes land-shake {
      0%, 100% { transform: translateX(0); }
      25% { transform: translateX(-3px); }
      75% { transform: translateX(3px); }
    }

    .board-shake {
      animation: land-shake 0.15s ease-out;
    }

    @keyframes cell-pop {
      0% { transform: scale(1); }
      50% { transform: scale(1.15); }
      100% { transform: scale(1); }
    }

    .cell.just-placed {
      animation: cell-pop 0.2s ease-out;
    }

    @keyframes glow-pulse {
      0%, 100% { box-shadow: 0 0 5px currentColor; }
      50% { box-shadow: 0 0 15px currentColor, 0 0 25px currentColor; }
    }

    .cell.harvesting {
      animation: harvest-flash 0.3s ease-out, glow-pulse 0.3s ease-out;
    }

    /* Harvested rows - permanent kingdom land (subtle indicator) */
    .cell.harvested {
      box-shadow: inset 0 0 6px rgba(255, 215, 0, 0.35);
      border: 1px solid rgba(255, 215, 0, 0.3);
      opacity: 0.75;
    }

    .cell.harvested::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(255,215,0,0.08) 0%, rgba(255,215,0,0.02) 100%);
      pointer-events: none;
    }

    /* Next Piece Preview */
    .next-piece {
      margin-top: 10px;
      background: var(--bg-secondary);
      border: 2px solid var(--accent);
      border-radius: 12px;
      padding: 12px;
      text-align: center;
      min-width: 120px;
    }

    .next-label {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--accent);
      margin-bottom: 8px;
      text-transform: uppercase;
      letter-spacing: 0.1em;
    }

    .next-preview {
      display: grid;
      grid-template-columns: repeat(4, 24px);
      grid-template-rows: repeat(4, 24px);
      gap: 2px;
      justify-content: center;
      background: var(--bg-card);
      padding: 4px;
      border-radius: 6px;
    }

    .preview-cell {
      width: 24px;
      height: 24px;
      border-radius: 3px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.7rem;
      background: transparent;
    }

    .preview-cell.forest { background: var(--forest); }
    .preview-cell.plains { background: var(--plains); }
    .preview-cell.mountain { background: var(--mountain); }
    .preview-cell.river { background: var(--river); }
    .preview-cell.settlement { background: var(--settlement); }

    /* Right Panel - Enemy Info */
    .right-panel {
      width: 160px;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .enemy-section {
      flex: 1;
    }

    .enemy-wave {
      background: var(--bg-card);
      border-radius: 6px;
      padding: 8px;
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .enemy-icon { font-size: 1.2rem; }
    .enemy-count {
      font-size: 0.9rem;
      font-weight: 700;
    }
    .enemy-type {
      font-size: 0.65rem;
      color: var(--text-secondary);
    }

    /* Score Display */
    .score-section {
      text-align: center;
    }

    .score-value {
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--gold);
    }

    .score-label {
      font-size: 0.7rem;
      color: var(--text-secondary);
    }

    /* Controls */
    .controls-hint {
      position: fixed;
      bottom: 10px;
      left: 50%;
      transform: translateX(-50%);
      background: rgba(0,0,0,0.8);
      padding: 8px 16px;
      border-radius: 20px;
      font-size: 0.7rem;
      color: var(--text-secondary);
    }

    .controls-hint kbd {
      background: var(--bg-card);
      padding: 2px 6px;
      border-radius: 4px;
      margin: 0 2px;
    }

    /* Menu Screen */
    .menu-screen {
      position: fixed;
      inset: 0;
      top: 48px;
      background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: safe center;
      z-index: 100;
      overflow-y: auto;
      overflow-x: hidden;
      padding: clamp(0.75rem, 3vh, 2rem) 1rem;
      gap: clamp(0.3rem, 1.5vh, 0.75rem);
    }

    .menu-screen.hidden {
      display: none;
    }

    .menu-icon {
      font-size: clamp(2.5rem, 8vh, 5rem);
    }

    .menu-title {
      font-size: clamp(1.5rem, 5vh, 2.5rem);
      font-weight: 800;
    }

    .menu-meta {
      background: var(--bg-card);
      border: 2px solid var(--border);
      border-radius: 12px;
      padding: clamp(0.5rem, 1.5vh, 1rem) 1.5rem;
      text-align: center;
    }

    .meta-hearthstones {
      font-size: clamp(1rem, 2.5vh, 1.3rem);
      color: #ff6b35;
      font-weight: 700;
    }

    .meta-rank {
      color: #a855f7;
      font-weight: 600;
      margin: 0.15rem 0;
    }

    .meta-stats {
      font-size: 0.8rem;
      color: var(--text-secondary);
    }

    .menu-subtitle {
      color: var(--text-secondary);
    }

    .menu-btn {
      background: linear-gradient(135deg, var(--accent), #ff6b6b);
      border: none;
      color: white;
      font-size: clamp(1rem, 2.5vh, 1.2rem);
      font-weight: 700;
      padding: clamp(0.6rem, 1.5vh, 1rem) 3rem;
      border-radius: 30px;
      cursor: pointer;
      width: min(80%, 300px);
    }

    .menu-btn:hover {
      transform: scale(1.05);
    }

    .deck-select {
      display: flex;
      gap: 10px;
    }

    .deck-btn {
      background: var(--bg-card);
      border: 2px solid var(--border);
      color: var(--text-primary);
      padding: clamp(0.5rem, 1.5vh, 1rem);
      border-radius: 10px;
      cursor: pointer;
      text-align: center;
      width: clamp(80px, 25vw, 120px);
    }

    .deck-btn:hover, .deck-btn.selected {
      border-color: var(--gold);
    }

    .deck-icon { font-size: clamp(1.3rem, 4vh, 2rem); }
    .deck-name { font-weight: 600; font-size: clamp(0.75rem, 2vh, 0.9rem); }
    .deck-desc { font-size: 0.65rem; color: var(--text-secondary); }

    /* Shop Modal */
    .shop-modal {
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.9);
      display: none;
      align-items: center;
      justify-content: center;
      z-index: 200;
    }

    .shop-modal.show {
      display: flex;
    }

    .shop-content {
      background: var(--bg-secondary);
      border: 2px solid var(--border);
      border-radius: 16px;
      padding: 2rem;
      max-width: 600px;
      width: 90%;
    }

    .shop-title {
      font-size: 1.5rem;
      margin-bottom: 1rem;
      text-align: center;
    }

    .shop-cards {
      display: flex;
      gap: 15px;
      justify-content: center;
      margin-bottom: 1.5rem;
    }

    .shop-card {
      background: var(--bg-card);
      border: 2px solid var(--border);
      border-radius: 12px;
      padding: 15px;
      width: 150px;
      cursor: pointer;
      transition: all 0.2s;
    }

    .shop-card:hover {
      border-color: var(--gold);
      transform: translateY(-5px);
    }

    .shop-card.free {
      border-color: #4CAF50;
    }

    .shop-card.joker {
      border-color: #9333ea;
      background: linear-gradient(135deg, var(--bg-card) 0%, #2d1b4e 100%);
      box-shadow: 0 0 15px rgba(147, 51, 234, 0.3);
    }

    .shop-card.joker:hover {
      border-color: #a855f7;
      box-shadow: 0 0 25px rgba(147, 51, 234, 0.5);
    }

    .shop-card-type {
      font-size: 0.7rem;
      color: #a855f7;
      text-align: center;
      font-weight: 600;
      letter-spacing: 0.1em;
    }

    .shop-card-icon { font-size: 2rem; text-align: center; }
    .shop-card-name { font-weight: 700; text-align: center; margin: 8px 0; }
    .shop-card-desc { font-size: 0.75rem; color: var(--text-secondary); text-align: center; }
    .shop-card-cost {
      text-align: center;
      margin-top: 8px;
      font-size: 0.8rem;
      color: var(--gold);
    }

    .shop-skip {
      display: block;
      margin: 0 auto;
      background: none;
      border: 2px solid var(--border);
      color: var(--text-secondary);
      padding: 0.5rem 2rem;
      border-radius: 20px;
      cursor: pointer;
    }

    .shop-skip:hover {
      border-color: var(--text-primary);
      color: var(--text-primary);
    }

    /* Attack Phase Overlay */
    .attack-overlay {
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.85);
      display: none;
      align-items: center;
      justify-content: center;
      z-index: 150;
    }

    .attack-overlay.show {
      display: flex;
    }

    .attack-content {
      text-align: center;
    }

    .attack-title {
      font-size: 2rem;
      color: var(--accent);
      margin-bottom: 1rem;
      animation: pulse 1s infinite;
    }

    @keyframes pulse {
      0%, 100% { transform: scale(1); }
      50% { transform: scale(1.05); }
    }

    .attack-enemies {
      display: flex;
      gap: 10px;
      justify-content: center;
      flex-wrap: wrap;
      margin: 1.5rem 0;
    }

    .attack-enemy {
      background: var(--bg-card);
      padding: 0.8rem 1.2rem;
      border-radius: 10px;
      text-align: center;
      min-width: 70px;
    }

    .attack-enemy.total {
      background: linear-gradient(135deg, var(--accent), #ff6b6b);
      border: 2px solid var(--accent);
    }

    .attack-enemy-icon { font-size: 1.8rem; }
    .attack-enemy-count { font-size: 1.2rem; font-weight: 700; }
    .attack-enemy-type { font-size: 0.7rem; color: var(--text-secondary); }
    .attack-enemy.total .attack-enemy-type { color: white; }

    .attack-vs {
      font-size: 2rem;
      margin: 1rem 0;
      color: var(--text-secondary);
    }

    .attack-defence {
      font-size: 1.2rem;
      margin-bottom: 1rem;
    }

    .attack-result {
      font-size: 1.5rem;
      font-weight: 700;
      padding: 1rem;
      border-radius: 10px;
      margin-bottom: 1rem;
    }

    .attack-result.victory {
      background: rgba(76, 175, 80, 0.3);
      color: #4CAF50;
    }

    .attack-result.breach {
      background: rgba(233, 69, 96, 0.3);
      color: var(--accent);
    }

    .attack-btn {
      background: var(--accent);
      border: none;
      color: white;
      padding: 0.8rem 2rem;
      border-radius: 20px;
      font-size: 1rem;
      cursor: pointer;
    }

    /* Tutorial Modal */
    .tutorial-modal {
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.95);
      display: none;
      align-items: center;
      justify-content: center;
      z-index: 400;
      overflow-y: auto;
      padding: 20px;
    }

    .tutorial-modal.show {
      display: flex;
    }

    .tutorial-content {
      background: var(--bg-secondary);
      border: 2px solid var(--border);
      border-radius: 16px;
      padding: 1.5rem;
      max-width: 600px;
      width: 100%;
      max-height: 90vh;
      overflow-y: auto;
    }

    .tutorial-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 1rem;
    }

    .tutorial-title {
      font-size: 1.5rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    .tutorial-close {
      background: none;
      border: none;
      color: var(--text-secondary);
      font-size: 1.5rem;
      cursor: pointer;
    }

    .tutorial-section {
      margin-bottom: 1.5rem;
    }

    .tutorial-section h3 {
      color: var(--accent);
      font-size: 1rem;
      margin-bottom: 0.5rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    .tutorial-section p {
      font-size: 0.85rem;
      color: var(--text-secondary);
      line-height: 1.5;
      margin-bottom: 0.5rem;
    }

    .tutorial-terrains {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 0.5rem;
    }

    .terrain-item {
      background: var(--bg-card);
      padding: 8px 12px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 0.8rem;
    }

    .terrain-item span:first-child {
      font-size: 1.2rem;
    }

    .tutorial-controls {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 8px;
      margin-top: 0.5rem;
    }

    .control-item {
      background: var(--bg-card);
      padding: 8px 12px;
      border-radius: 8px;
      font-size: 0.8rem;
    }

    .control-item kbd {
      background: var(--bg-secondary);
      padding: 2px 8px;
      border-radius: 4px;
      font-family: monospace;
      margin-right: 6px;
    }

    .tutorial-tips {
      background: linear-gradient(135deg, rgba(233, 69, 96, 0.1), transparent);
      border: 1px solid rgba(233, 69, 96, 0.3);
      border-radius: 8px;
      padding: 1rem;
    }

    .tutorial-tips li {
      font-size: 0.85rem;
      color: var(--text-secondary);
      margin-bottom: 0.4rem;
      list-style: none;
      padding-left: 1.5rem;
      position: relative;
    }

    .tutorial-tips li::before {
      content: '💡';
      position: absolute;
      left: 0;
      font-size: 0.7rem;
    }

    .tutorial-start-btn {
      background: var(--accent);
      border: none;
      color: white;
      font-size: 1rem;
      font-weight: 700;
      padding: 0.8rem 2rem;
      border-radius: 20px;
      cursor: pointer;
      width: 100%;
      margin-top: 1rem;
    }

    /* Game Over */
    .gameover-modal {
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.9);
      display: none;
      align-items: center;
      justify-content: center;
      z-index: 300;
    }

    .gameover-modal.show {
      display: flex;
    }

    .gameover-content {
      background: var(--bg-secondary);
      border-radius: 16px;
      padding: 2rem;
      text-align: center;
      max-width: 400px;
    }

    .gameover-icon { font-size: 4rem; }
    .gameover-title { font-size: 2rem; margin: 1rem 0; }
    .gameover-score { font-size: 3rem; color: var(--gold); font-weight: 700; }
    .gameover-wave { color: var(--text-secondary); margin-bottom: 0.5rem; }

    .gameover-meta {
      background: var(--bg-card);
      border-radius: 12px;
      padding: 1rem;
      margin: 1rem 0;
    }

    .gameover-hearthstones {
      font-size: 1.3rem;
      color: #ff6b35;
      font-weight: 700;
    }

    .gameover-total {
      font-size: 0.9rem;
      color: var(--text-secondary);
      margin-top: 0.3rem;
    }

    .gameover-tier {
      font-size: 1rem;
      color: #a855f7;
      margin-top: 0.5rem;
      font-weight: 600;
    }

    .gameover-next-tier {
      font-size: 0.8rem;
      color: var(--text-secondary);
    }

    .gameover-unlocks {
      margin: 1rem 0;
    }

    .new-unlock {
      background: linear-gradient(135deg, #4CAF50, #2e7d32);
      padding: 0.8rem;
      border-radius: 8px;
      font-weight: 600;
      animation: unlock-glow 1s infinite alternate;
    }

    @keyframes unlock-glow {
      from { box-shadow: 0 0 5px #4CAF50; }
      to { box-shadow: 0 0 20px #4CAF50; }
    }

    .gameover-btn {
      background: var(--accent);
      border: none;
      color: white;
      padding: 0.8rem 2rem;
      border-radius: 20px;
      font-size: 1rem;
      cursor: pointer;
      margin: 0.5rem;
    }

    /* Toast Notifications */
    .toast-container {
      position: fixed;
      top: 60px;
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      flex-direction: column;
      gap: 8px;
      z-index: 500;
      pointer-events: none;
    }

    .toast {
      background: var(--bg-card);
      border: 2px solid var(--gold);
      border-radius: 8px;
      padding: 8px 16px;
      font-size: 0.9rem;
      font-weight: 600;
      animation: toastIn 0.3s ease-out, toastOut 0.3s ease-in 1.5s forwards;
      white-space: nowrap;
    }

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

    @keyframes toastOut {
      from { opacity: 1; }
      to { opacity: 0; }
    }

    .toast.harvest {
      border-color: #4CAF50;
      color: #4CAF50;
    }

    .toast.score {
      border-color: var(--gold);
      color: var(--gold);
    }

    /* Mobile UI - visible by default, hidden on wide screens */
    .mobile-ui {
      display: flex;
      flex-direction: column;
      gap: 3px;
      padding: 5px 8px;
      background: var(--bg-secondary);
      border-bottom: 1px solid var(--border);
    }

    @media (min-width: 901px) {
      .mobile-ui { display: none; }
    }

    /* Tablet + Mobile: hide panels, show compact mobile UI */
    @media (max-width: 900px) {
      /* Mobile-optimized cell size: fits both width AND height */
      /* Width: (100vw - 24px) / 10.5 columns */
      /* Height: (available height) / 22 rows (20 board + ~2 for HUD) */
      /* Available height = 100dvh - 50px header - 70px mobile UI */
      :root {
        /* Account for: header 50px + mobile-ui ~65px + padding */
        --cell-size: clamp(13px, min(calc((100vw - 24px) / 10.5), calc((100dvh - 140px) / 22)), 28px);
      }

      .left-panel, .right-panel {
        display: none;
      }

      .controls-hint {
        display: none;
      }

      /* mobile-ui styles already set in base — just ensure visible */

      .mobile-top-row {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 6px;
      }

      .mobile-stat {
        display: flex;
        flex-direction: column;
        align-items: center;
        min-width: 36px;
      }

      .mobile-score {
        font-size: 1rem;
        font-weight: 700;
        color: var(--accent);
      }

      .mobile-label {
        font-size: 0.5rem;
        color: var(--text-secondary);
        text-transform: uppercase;
      }

      .mobile-wave {
        font-size: 0.9rem;
        font-weight: 700;
        color: var(--text-primary);
      }

      .mobile-resources {
        display: flex;
        gap: 4px;
        flex: 1;
        justify-content: center;
      }

      .mobile-res {
        display: flex;
        align-items: center;
        gap: 2px;
        font-size: 0.75rem;
        font-weight: 600;
        background: var(--bg-card);
        padding: 2px 6px;
        border-radius: 8px;
      }

      .mobile-bottom-row {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 6px;
        min-height: 24px;
      }

      .mobile-cards {
        display: flex;
        gap: 4px;
        flex: 1;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
      }

      .mobile-cards .mobile-card {
        font-size: 0.65rem;
        padding: 2px 6px;
        border-radius: 6px;
        background: rgba(255,255,255,0.06);
        border: 1px solid rgba(255,255,255,0.1);
        white-space: nowrap;
        color: var(--text-primary);
      }

      .mobile-enemy {
        font-size: 0.65rem;
        color: var(--accent, #e94560);
        font-weight: 600;
        white-space: nowrap;
      }

      /* Adjust game container for mobile — full height */
      .game-container {
        height: calc(100dvh - 50px);
        padding-bottom: env(safe-area-inset-bottom);
      }

      /* Gesture hint overlay (shown once on first mobile play) */
      .gesture-hint {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.85);
        z-index: 500;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 1.5rem;
        color: var(--text-primary);
        padding: 2rem;
        text-align: center;
        animation: fadeIn 0.3s ease-out;
      }

      .gesture-hint-title {
        font-size: 1.3rem;
        font-weight: 700;
      }

      .gesture-hint-items {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        font-size: 1rem;
      }

      .gesture-hint-item {
        display: flex;
        align-items: center;
        gap: 0.75rem;
      }

      .gesture-hint-icon {
        font-size: 1.5rem;
        width: 48px;
        height: 48px;
        background: var(--bg-card);
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
      }

      .gesture-hint-dismiss {
        background: var(--accent);
        color: white;
        border: none;
        padding: 0.6rem 2rem;
        border-radius: 8px;
        font-size: 1rem;
        font-weight: 600;
        cursor: pointer;
        margin-top: 0.5rem;
      }

      @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
      }

      .board-container {
        margin-top: 8px;
      }

      .next-piece {
        margin-top: 8px;
        padding: 8px;
        min-width: 100px;
      }

      .next-preview {
        grid-template-columns: repeat(4, 20px);
        grid-template-rows: repeat(4, 20px);
      }

      .next-label {
        font-size: 0.7rem;
      }

      /* Adjust modals for mobile */
      .shop-content {
        width: 95%;
        max-height: 80vh;
        overflow-y: auto;
      }

      .shop-cards {
        flex-direction: column;
        gap: 10px;
      }

      .shop-card {
        width: 100%;
      }

      .deck-btn {
        width: clamp(70px, 28vw, 110px);
      }
    }

    /* Accessibility: Respect reduced motion preferences */