.slot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 12px;
    margin-top: 16px;
}

.slot {
    padding: 12px;
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 2px solid #e5e7eb;
}

    .slot:hover {
        border-color: #3b82f6;
    }

    .slot.selected {
        background-color: #3b82f6;
        color: white;
        border-color: #3b82f6;
    }

    .slot.unavailable {
        background-color: #f3f4f6;
        color: #9ca3af;
        cursor: not-allowed;
    }

.success-message {
    display: none;
    background-color: #d1fae5;
    border: 1px solid #10b981;
    color: #065f46;
    padding: 16px;
    border-radius: 8px;
    margin-top: 20px;
}