.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
}

.modal-container {
    position: relative;
    background: var(--white);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 450px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-2xl);
    transform: scale(0.9) translateY(20px);
    transition: var(--transition);
}

.modal.active .modal-container {
    transform: scale(1) translateY(0);
}

.modal-container.modal-lg {
    max-width: 800px;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    border-radius: var(--radius-full);
    color: var(--gray-600);
    font-size: 1rem;
    transition: var(--transition);
    z-index: 10;
}

.modal-close:hover {
    background: var(--gray-200);
    color: var(--gray-800);
}

.modal-content {
    padding: 2.5rem;
}

.auth-tabs {
    display: flex;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--gray-200);
}

.auth-tab {
    flex: 1;
    padding: 1rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-500);
    background: none;
    border: none;
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

.auth-tab::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.auth-tab.active {
    color: var(--primary);
}

.auth-tab.active::after {
    transform: scaleX(1);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.auth-form h2 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.auth-form > p {
    color: var(--gray-500);
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 0.95rem;
    color: var(--gray-800);
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.form-group input::placeholder {
    color: var(--gray-400);
}

.password-input {
    position: relative;
}

.password-input input {
    padding-right: 3rem;
}

.toggle-password {
    position: absolute;
    top: 50%;
    right: 1rem;
    transform: translateY(-50%);
    color: var(--gray-400);
    font-size: 1rem;
    transition: var(--transition);
}

.toggle-password:hover {
    color: var(--gray-600);
}

.password-strength {
    height: 4px;
    border-radius: 2px;
    background: var(--gray-200);
    margin-top: 0.5rem;
    overflow: hidden;
}

.password-strength::after {
    content: '';
    display: block;
    height: 100%;
    width: 0;
    transition: var(--transition);
}

.password-strength.weak::after {
    width: 33%;
    background: var(--error);
}

.password-strength.medium::after {
    width: 66%;
    background: var(--warning);
}

.password-strength.strong::after {
    width: 100%;
    background: var(--success);
}

.form-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.form-row-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--gray-600);
    margin-bottom: 1.5rem;
}

.checkbox-label input {
    width: 18px;
    height: 18px;
    margin-top: 0.1rem;
    accent-color: var(--primary);
}

.checkbox-label a {
    color: var(--primary);
    font-weight: 500;
}

.checkbox-label a:hover {
    text-decoration: underline;
}

.forgot-link {
    font-size: 0.9rem;
    color: var(--primary);
    font-weight: 500;
}

.forgot-link:hover {
    text-decoration: underline;
}

.auth-divider {
    position: relative;
    text-align: center;
    margin: 1.5rem 0;
}

.auth-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gray-200);
}

.auth-divider span {
    position: relative;
    background: var(--white);
    padding: 0 1rem;
    color: var(--gray-500);
    font-size: 0.85rem;
}

.social-auth {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0.875rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray-700);
    transition: var(--transition);
}

.social-btn:hover {
    border-color: var(--gray-300);
    background: var(--gray-50);
}

.social-btn.google:hover {
    border-color: #4285f4;
    color: #4285f4;
}

.social-btn.facebook:hover {
    border-color: #1877f2;
    color: #1877f2;
}

.social-btn i {
    font-size: 1.1rem;
}

.quick-view-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.quick-view-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.quick-view-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.quick-view-info h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
}

.quick-view-info .product-rating {
    margin-bottom: 1rem;
}

.quick-view-info .product-price {
    margin-bottom: 1.5rem;
}

.quick-view-info .product-description {
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.quantity-selector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.quantity-selector label {
    font-weight: 500;
    color: var(--gray-700);
}

.quantity-controls {
    display: flex;
    align-items: stretch;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    overflow: hidden;
}

.quantity-btn {
    width: 40px;
    background: var(--gray-100);
    color: var(--gray-600);
    font-size: 1rem;
    transition: var(--transition);
}

.quantity-btn:hover {
    background: var(--primary);
    color: var(--white);
}

.quantity-input {
    width: 60px;
    text-align: center;
    border: none;
    font-size: 1rem;
    font-weight: 600;
}

.quantity-input:focus {
    outline: none;
}

.quick-view-actions {
    display: flex;
    gap: 1rem;
}

.account-type-selector {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.account-type-option {
    cursor: pointer;
}

.account-type-option input {
    display: none;
}

.account-type-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    background: var(--white);
    transition: var(--transition);
}

.account-type-option input:checked + .account-type-card {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.account-type-card:hover {
    border-color: var(--primary-light);
}

.account-type-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.account-type-icon.customer-icon {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
}

.account-type-icon.seller-icon {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: var(--white);
}

.account-type-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.account-type-title {
    font-weight: 600;
    color: var(--gray-800);
    font-size: 0.95rem;
}

.account-type-desc {
    font-size: 0.8rem;
    color: var(--gray-500);
}

.account-type-check {
    color: var(--gray-300);
    font-size: 1.25rem;
    transition: var(--transition);
}

.account-type-option input:checked + .account-type-card .account-type-check {
    color: var(--primary);
}

.btn-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
}

.btn-gradient:hover {
    background: linear-gradient(135deg, #5a67d8 0%, #6b46c1 100%);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(99, 102, 241, 0.4);
}

@media (max-width: 768px) {
    .modal-content {
        padding: 2rem 1.5rem;
    }
    
    .form-row-2 {
        grid-template-columns: 1fr;
    }
    
    .social-auth {
        grid-template-columns: 1fr;
    }
    
    .quick-view-content {
        grid-template-columns: 1fr;
    }
    
    .quick-view-image img {
        height: 300px;
    }
    
    .account-type-card {
        padding: 0.875rem 1rem;
    }
    
    .account-type-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}