/* Checkout Modal & WhatsApp Flow Styles */
.checkout-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 200;
    opacity: 0;
    transition: opacity var(--transition-base);
    padding: 1rem;
    overflow-y: auto;
}

.checkout-modal-overlay.active {
    display: flex;
    opacity: 1;
}

.checkout-modal-card {
    background: #ffffff;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-modal);
    width: 100%;
    max-width: 580px;
    max-height: 90vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(255, 255, 255, 0.8);
    transform: scale(0.95);
    transition: transform var(--transition-bounce);
}

.checkout-modal-overlay.active .checkout-modal-card {
    transform: scale(1);
}

.checkout-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 1.75rem 1rem 1.75rem;
    border-bottom: 1px solid var(--color-border);
}

.checkout-modal-header h3 {
    font-size: 1.35rem;
    color: var(--color-primary-dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 800;
}

.checkout-close-btn {
    cursor: pointer;
    background: #f1f5f9;
    border-radius: var(--radius-full);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.checkout-close-btn:hover {
    background: #e2e8f0;
    color: var(--color-text-primary);
    transform: rotate(90deg);
}

.checkout-form {
    padding: 1.5rem 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 1.15rem;
}

.checkout-order-preview {
    background: #f8fafc;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
}

.preview-header {
    font-weight: 800;
    font-size: 0.88rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.5rem;
}

.preview-items-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin-bottom: 0.75rem;
    max-height: 120px;
    overflow-y: auto;
}

.preview-item-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.92rem;
    color: var(--color-text-primary);
}

.preview-total-row {
    display: flex;
    justify-content: space-between;
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--color-primary-dark);
    border-top: 1px dashed var(--color-border);
    padding-top: 0.6rem;
}

.form-group-checkout {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-group-checkout label {
    font-weight: 700;
    font-size: 0.92rem;
    color: var(--color-text-primary);
}

.form-group-checkout input,
.form-group-checkout select,
.form-group-checkout textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.95rem;
    outline: none;
    transition: all var(--transition-fast);
    background-color: #ffffff;
}

.form-group-checkout input:focus,
.form-group-checkout select:focus,
.form-group-checkout textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-soft);
}

.delivery-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.85rem;
}

.delivery-option-label {
    border: 2px solid var(--color-border);
    background: #f8fafc;
    border-radius: var(--radius-md);
    padding: 0.85rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    transition: all var(--transition-fast);
}

.delivery-option-label input {
    display: none;
}

.delivery-option-label.selected {
    border-color: var(--color-primary);
    background: #fff7ed;
}

.opt-content strong {
    display: block;
    font-size: 0.95rem;
    color: var(--color-text-primary);
    margin-bottom: 2px;
}

.opt-content small {
    font-size: 0.78rem;
    color: var(--color-text-secondary);
}

.checkout-actions {
    display: flex;
    gap: 1rem;
    margin-top: 0.75rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

.btn-send-whatsapp {
    flex: 1.5;
    background: #25d366;
    color: #ffffff;
    padding: 0.95rem 1.25rem;
    border-radius: var(--radius-md);
    font-weight: 800;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 4px 14px rgba(37, 211, 102, 0.4);
    transition: all var(--transition-fast);
}

.btn-send-whatsapp:hover {
    background: #1ebc59;
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(37, 211, 102, 0.5);
}

.btn-send-whatsapp:active {
    transform: scale(0.98);
}

@media (max-width: 600px) {
    .delivery-options {
        grid-template-columns: 1fr;
    }

    .checkout-modal-card {
        max-height: 95vh;
    }

    .checkout-form {
        padding: 1.25rem 1rem;
    }
}