/* Global Reset and Base Styles */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
        background: #f5f5f5;
        padding: 20px;
        min-height: 100vh;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    /* Container */
    .container {
        background: white;
        border-radius: 16px;
        padding: 30px;
        max-width: 420px;
        width: 100%;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    }

    /* Title with decorative lines */
    .title {
        text-align: center;
        color: #ff4d79;
        font-size: 28px;
        font-weight: 600;
        margin-bottom: 30px;
        position: relative;
        padding: 0 20px;
    }

    .title::before,
    .title::after {
        content: '';
        position: absolute;
        top: 50%;
        width: 60px;
        height: 1px;
        background: #e0e0e0;
        transform: translateY(-50%);
    }

    .title::before {
        left: 0;
    }

    .title::after {
        right: 0;
    }

    /* Price Option Cards */
    .price-option {
        border: 2px solid #e8e8e8;
        border-radius: 12px;
        padding: 16px;
        margin-bottom: 16px;
        cursor: pointer;
        transition: all 0.3s ease;
        position: relative;
        background: white;
    }

    .price-option:hover {
        border-color: #ffb3c1;
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(255, 77, 121, 0.1);
    }

    .price-option.active {
        border-color: #ff4d79;
        background: #fff5f7;
    }

    .price-option.most-popular {
        border-color: #ff4d79;
    }

    /* Most Popular Badge */
    .most-popular-tag {
        position: absolute;
        right: 12px;
        top: -10px;
        background: #ff4d79;
        color: white;
        padding: 4px 12px;
        border-radius: 20px;
        font-size: 11px;
        font-weight: 600;
        letter-spacing: 0.5px;
    }

    /* Option Header Layout */
    .option-header {
        display: flex;
        align-items: center;
        gap: 12px;
    }

    /* Custom Radio Button */
    .radio-wrapper {
        position: relative;
        width: 20px;
        height: 20px;
    }

    .radio-input {
        width: 20px;
        height: 20px;
        margin: 0;
        cursor: pointer;
        position: relative;
        opacity: 0;
    }

    .radio-custom {
        position: absolute;
        top: 0;
        left: 0;
        width: 20px;
        height: 20px;
        border: 2px solid #ddd;
        border-radius: 50%;
        pointer-events: none;
        transition: all 0.2s ease;
    }

    .radio-input:checked ~ .radio-custom {
        border-color: #ff4d79;
    }

    .radio-custom::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 8px;
        height: 8px;
        background: #ff4d79;
        border-radius: 50%;
        transform: translate(-50%, -50%) scale(0);
        transition: transform 0.2s ease;
    }

    .radio-input:checked ~ .radio-custom::after {
        transform: translate(-50%, -50%) scale(1);
    }

    /* Text Elements */
    .unit-text {
        font-weight: 600;
        font-size: 16px;
        color: #333;
    }

    .discount-badge {
        background: #ff4d79;
        color: white;
        padding: 3px 10px;
        border-radius: 20px;
        font-size: 12px;
        font-weight: 600;
    }

    /* Price Display */
    .price-container {
        margin-left: auto;
        text-align: right;
    }

    .price {
        font-weight: 700;
        font-size: 18px;
        color: #333;
        display: block;
    }

    .original-price {
        color: #999;
        text-decoration: line-through;
        font-size: 13px;
        margin-top: 2px;
        display: block;
    }

    .standard-price {
        color: #666;
        font-size: 13px;
        margin-top: 8px;
        margin-left: 32px;
    }

    /* Expandable Options Grid */
    .options-grid {
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        transition: all 0.4s ease;
        margin-top: 0;
    }

    .price-option.active .options-grid {
        max-height: 200px;
        opacity: 1;
        margin-top: 20px;
    }

    .options-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px;
        padding-top: 16px;
        border-top: 1px solid #eee;
    }

    .option-group {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .option-label {
        font-size: 13px;
        color: #666;
        font-weight: 500;
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .label-number {
        background: #f0f0f0;
        width: 24px;
        height: 24px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 600;
        color: #666;
    }

    .select-group {
        display: flex;
        gap: 8px;
    }

    /* Select Dropdowns */
    select {
        flex: 1;
        padding: 10px 12px;
        border: 1px solid #e0e0e0;
        border-radius: 8px;
        background: white;
        font-size: 14px;
        color: #333;
        cursor: pointer;
        transition: all 0.2s ease;
        appearance: none;
        background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%23666' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
        background-repeat: no-repeat;
        background-position: right 12px center;
        padding-right: 32px;
    }

    select:hover {
        border-color: #ff4d79;
    }

    select:focus {
        outline: none;
        border-color: #ff4d79;
        box-shadow: 0 0 0 3px rgba(255, 77, 121, 0.1);
    }

    /* Delivery Info Section */
    .delivery-info {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin: 24px 0;
        padding: 16px 0;
        border-top: 1px solid #eee;
        border-bottom: 1px solid #eee;
    }

    .free-delivery {
        color: #ff4d79;
        font-weight: 500;
        font-size: 15px;
    }

    .total-price {
        color: #333;
        font-weight: 600;
        font-size: 16px;
    }

    /* Add to Cart Button */
    .add-to-cart {
        width: 100%;
        padding: 16px;
        background: #ff4d79;
        color: white;
        border: none;
        border-radius: 12px;
        cursor: pointer;
        font-size: 16px;
        font-weight: 600;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        transition: all 0.3s ease;
        box-shadow: 0 4px 12px rgba(255, 77, 121, 0.2);
    }

    .add-to-cart:hover {
        background: #ff3366;
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(255, 77, 121, 0.3);
    }

    .add-to-cart:active {
        transform: translateY(0);
    }

    /* Footer */
    .powered-by {
        text-align: center;
        margin-top: 20px;
        color: #999;
        font-size: 12px;
    }

    /* Responsive Design */
    @media (max-width: 480px) {
        .container {
            padding: 20px;
        }

        .title {
            font-size: 24px;
        }

        .options-row {
            grid-template-columns: 1fr;
        }

        .price-option.active .options-grid {
            max-height: 400px;
        }
    }