* {
    box-sizing: border-box;
}

.main-card {
    border: 2px solid rgba(148, 163, 184, 0.4);
    max-height: 90vh;
    overflow-y: auto;
}

.main-card::-webkit-scrollbar {
    width: 6px;
}

.main-card::-webkit-scrollbar-thumb {
    background: #64748b;
    border-radius: 3px;
}

.bet-amount-btn,
.multi-btn {
    background-color: rgba(51, 65, 85, 0.9);
    border-radius: 20px;
    padding: 8px 10px;
    font-size: 0.85rem;
    font-weight: 500;
    color: #e5e7eb;
    border: 1px solid rgba(75, 85, 99, 0.9);
    cursor: pointer;
    transition: all 0.15s ease;
}

.bet-amount-btn:hover,
.multi-btn:hover {
    background-color: rgba(30, 64, 175, 0.9);
    box-shadow: 0 0 8px rgba(59, 130, 246, 0.5);
}

.bet-amount-btn.active,
.multi-btn.active {
    background-color: rgba(52, 211, 153, 0.95);
    color: #022c22;
    border-color: #10b981;
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.8);
    transform: scale(1.05);
}

.result-win {
    color: #4ade80;
}

.result-lose {
    color: #fb7185;
}

.shake {
    animation: shake 0.3s ease;
}

@keyframes shake {
    10%, 90% { transform: translateX(-1px); }
    20%, 80% { transform: translateX(2px); }
    30%, 50%, 70% { transform: translateX(-4px); }
    40%, 60% { transform: translateX(4px); }
}