body { font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif; background: #f8f9fa; margin: 0; padding: 0; min-height: 100vh; }
        .header { background: linear-gradient(90deg, #3b82f6, #2563eb); color: white; margin-left: -16px; margin-right: -16px; padding-left: 16px; padding-right: 16px; display: flex; align-items: center; justify-content: space-between; }
        .tile { background: white; border: 1px solid #ddd; box-shadow: 0 2px 0 #ddd; padding: 2px 5px; margin: 3px; border-radius: 9999px; font-size: 0.95rem; display: inline-flex; align-items: center; justify-content: center; min-width: 60px; height: 30px; user-select: none; cursor: grab; white-space: nowrap; }
        .answer-tile { background: #3b82f6; color: white; border: none; box-shadow: 0 2px 0 #1e40af; }
        .drop-zone { background: white; border: 3px dashed #3b82f6; border-radius: 16px; min-height: 96px; padding: 10px; margin-bottom: 12px; }
        .drop-zone.empty { display: flex; align-items: center; justify-content: center; color: #888; font-style: italic; }
        .option-btn { width: 100%; padding: 10px 12px; font-size: 1.05rem; border: 2px solid #ddd; background: white; border-radius: 9999px; margin-bottom: 5px; text-align: left; }
        .words-option { padding: 12px 16px; font-size: 1.1rem; border: 2px solid #ddd; background: white; border-radius: 9999px; text-align: center; }
        button { padding: 10px 20px; border: none; border-radius: 9999px; font-weight: 600; cursor: pointer; }
        .btn-skip { background: transparent; color: #3b82f6; }
        .btn-check, .btn-next { background: #3b82f6; color: white; }
        .words-image { width: 100%; max-height:300px; max-width: 350px; height: auto; border-radius: 20px; box-shadow: 0 10px 25px rgba(0,0,0,0.15); margin: 0 auto 10px; display: block; }
        #words-ui .options-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
        .tile.used { opacity: 0.45; background: #f1f5f9; color: #64748b; cursor: not-allowed; box-shadow: 0 1px 0 #cbd5e1; }