:root {
    --rainbow: #e040a0;
    --rainbow-bg: rgba(224, 64, 160, 0.08);
    --rainbow-border: rgba(224, 64, 160, 0.25);
}

    /* LOADING SPINNER */
    .loading-state {
      position: relative;
      z-index: 2;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 300px;
      gap: 20px;
    }

    .spinner {
      width: 48px;
      height: 48px;
      border: 3px solid var(--border-subtle);
      border-top-color: var(--accent-glow);
      border-radius: 50%;
      animation: spin 0.8s ease-in-out infinite;
    }

    @keyframes spin {
      to { transform: rotate(360deg); }
    }

    .loading-text {
      font-size: 0.9rem;
      color: var(--text-muted);
      letter-spacing: 0.1em;
    }

    /* PACK GRID */
    .container {
      position: relative;
      z-index: 2;
      max-width: 1200px;
      margin: 0 auto;
      padding: 10px 20px 80px;
    }

    .pack-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
      gap: 24px;
    }

    /* PACK CARD */
    .pack-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: 16px;
      overflow: hidden;
      animation: fadeSlideIn 0.5s ease both;
      transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    }

    .pack-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 20px rgba(61, 220, 132, 0.06);
      border-color: rgba(61, 220, 132, 0.25);
    }

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

    .pack-header {
      padding: 20px 24px 16px;
      border-bottom: 1px solid var(--border-subtle);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
    }

    .pack-name {
      font-family: 'Cinzel Decorative', serif;
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-primary);
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .pack-icon {
      font-size: 1.4rem;
      filter: drop-shadow(0 0 6px rgba(240, 192, 64, 0.4));
    }

    .pack-tree-count {
      font-size: 0.75rem;
      color: var(--text-muted);
      background: rgba(61, 220, 132, 0.08);
      border: 1px solid rgba(61, 220, 132, 0.15);
      padding: 3px 10px;
      border-radius: 100px;
      letter-spacing: 0.06em;
      font-weight: 600;
      white-space: nowrap;
    }

    .pack-total-badge {
      font-size: 0.7rem;
      padding: 3px 10px;
      border-radius: 100px;
      font-weight: 700;
      letter-spacing: 0.04em;
      white-space: nowrap;
    }

    .pack-total-badge.complete {
      background: rgba(61, 220, 132, 0.1);
      border: 1px solid rgba(61, 220, 132, 0.25);
      color: var(--accent-glow);
    }

    .pack-total-badge.incomplete {
      background: rgba(240, 192, 64, 0.1);
      border: 1px solid rgba(240, 192, 64, 0.25);
      color: var(--accent-gold);
    }

    /* TREE LIST INSIDE PACK */
    .pack-trees {
      padding: 8px 0;
    }

    .pack-tree-item {
      display: grid;
      grid-template-columns: auto 1fr auto;
      align-items: center;
      gap: 14px;
      padding: 12px 24px;
      transition: background 0.2s ease;
    }

    .pack-tree-item:hover {
      background: var(--bg-card-hover);
    }

    .pack-tree-item + .pack-tree-item {
      border-top: 1px solid rgba(61, 220, 132, 0.05);
    }

    .tree-thumb {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      object-fit: cover;
      background: rgba(61, 220, 132, 0.05);
      border: 1px solid var(--border-subtle);
      flex-shrink: 0;
    }

    .tree-thumb-placeholder {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: rgba(61, 220, 132, 0.05);
      border: 1px solid var(--border-subtle);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .tree-thumb-placeholder svg {
      width: 24px;
      height: 24px;
      fill: var(--text-muted);
      opacity: 0.5;
    }

    .tree-info {
      min-width: 0;
    }

    .tree-name {
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-primary);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .tree-meta {
      font-size: 0.78rem;
      color: var(--text-muted);
      margin-top: 2px;
      display: flex;
      align-items: center;
      gap: 8px;
      flex-wrap: wrap;
    }

    .rarity-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      flex-shrink: 0;
    }

    .rarity-dot[data-rarity="Common"] { background: var(--common); }
    .rarity-dot[data-rarity="Rare"] { background: var(--rare); }
    .rarity-dot[data-rarity="Legendary"] { background: var(--legendary); }
    .rarity-dot[data-rarity="Mythical"] { background: var(--mythical); }
    .rarity-dot[data-rarity="Guardian"] { background: var(--guardian); }
    .rarity-dot[data-rarity="Enchanted"] { background: var(--enchanted); }
    .rarity-dot[data-rarity="Ancient"] { background: var(--ancient); }
    .rarity-dot[data-rarity="Rainbow"] { background: var(--rainbow); }

    /* CHANCE BAR */
    .chance-cell {
      display: flex;
      flex-direction: column;
      align-items: flex-end;
      gap: 4px;
      flex-shrink: 0;
      min-width: 80px;
    }

    .chance-value {
      font-size: 1rem;
      font-weight: 700;
      letter-spacing: 0.02em;
    }

    .chance-bar-wrap {
      width: 80px;
      height: 5px;
      background: rgba(255, 255, 255, 0.06);
      border-radius: 10px;
      overflow: hidden;
    }

    .chance-bar-fill {
      height: 100%;
      border-radius: 10px;
      transition: width 0.8s cubic-bezier(0.22, 1, 0.36, 1);
    }

    /* CHANCE COLORS */
    .chance-tier-legendary .chance-value { color: var(--accent-gold); }
    .chance-tier-legendary .chance-bar-fill { background: linear-gradient(90deg, var(--accent-gold), #ffdd70); }

    .chance-tier-high .chance-value { color: var(--accent-glow); }
    .chance-tier-high .chance-bar-fill { background: linear-gradient(90deg, var(--accent-glow), #70ffa8); }

    .chance-tier-mid .chance-value { color: #42a5f5; }
    .chance-tier-mid .chance-bar-fill { background: linear-gradient(90deg, #42a5f5, #78c4ff); }

    .chance-tier-low .chance-value { color: #ab47bc; }
    .chance-tier-low .chance-bar-fill { background: linear-gradient(90deg, #ab47bc, #ce93d8); }

    .chance-tier-ultra .chance-value {
      background: linear-gradient(90deg, #ff6ec7, #ffd700, #7df9ff, #ff6ec7);
      background-size: 200% 100%;
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      animation: shimmer 3s linear infinite;
    }
    .chance-tier-ultra .chance-bar-fill {
      background: linear-gradient(90deg, #ff6ec7, #ffd700, #7df9ff, #ff6ec7);
      background-size: 200% 100%;
      animation: shimmer 3s linear infinite;
    }

    @keyframes shimmer {
      to { background-position: 200% 0; }
    }

    /* SUMMARY BAR */
    .summary-bar {
      position: relative;
      z-index: 2;
      max-width: 1200px;
      margin: 0 auto 24px;
      padding: 0 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
    }

    .summary-title {
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-secondary);
      letter-spacing: 0.06em;
    }

    .summary-count {
      color: var(--accent-glow);
      font-weight: 700;
    }

    .sort-select {
      appearance: none;
      background:
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238aa896' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E")
        no-repeat right 12px center,
        var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: 10px;
      padding: 8px 36px 8px 14px;
      font-family: 'Quicksand', sans-serif;
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--text-primary);
      cursor: pointer;
      transition: border-color 0.3s;
    }

    .sort-select:hover,
    .sort-select:focus {
      border-color: var(--accent-glow);
      outline: none;
    }

    /* SCROLL TOP */
    ::-webkit-scrollbar {
      width: 6px;
    }

    ::-webkit-scrollbar-track {
      background: transparent;
    }

    ::-webkit-scrollbar-thumb {
      background: rgba(61, 220, 132, 0.2);
      border-radius: 10px;
    }

    /* RESPONSIVE */
    @media (max-width: 480px) {
      .pack-grid {
        grid-template-columns: 1fr;
      }

      .header {
        padding: 40px 16px 20px;
      }

      .container {
        padding: 10px 12px 60px;
      }

      .pack-header {
        padding: 16px 16px 12px;
        flex-wrap: wrap;
      }

      .pack-tree-item {
        padding: 10px 16px;
        gap: 10px;
      }

      .pack-name {
        font-size: 1rem;
      }

      .tree-thumb,
      .tree-thumb-placeholder {
        width: 40px;
        height: 40px;
      }

      .chance-bar-wrap {
        width: 60px;
      }

      .summary-bar {
        padding: 0 12px;
      }
    }

    /* EMPTY STATE */
    .empty-state {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 80px 20px;
      color: var(--text-muted);
      text-align: center;
    }

    .empty-state svg {
      width: 48px;
      height: 48px;
      stroke: var(--text-muted);
      fill: none;
      stroke-width: 1.5;
      margin-bottom: 16px;
      opacity: 0.5;
    }

    .empty-state p {
      font-size: 1rem;
      font-weight: 500;
    }

    .empty-state .sub {
      font-size: 0.85rem;
      margin-top: 6px;
    }