:root {
            --primary: #001150;
            --secondary: #d8c861;
            --accent: #154281;
            --light: #f8f9fa;
            --dark: #0a0f1c;
            --blue: #312179;
            --gray: #6b7280;
            --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --radius: 8px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html, body {
            font-family: "Inter", serif;
            color: var(--dark);
            background-color: var(--light);
            line-height: 1.7;
            overflow-x: hidden;
            font-weight: 400;
        }

        /* 修复页面布局问题 */
        body {
            position: relative;
        }

        body.sidebar-open {
            overflow: hidden;
        }


/* Header Styles */
header {
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    padding: 1.2rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    opacity: 0;
    transform: translateY(-20px);
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    background: rgba(255, 255, 255, 0.95);
}

header.visible {
    opacity: 1;
    transform: translateY(0);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 2.5rem;
    width: 100%;
    position: relative;
}

/* Logo Styles */
.logo {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1001;
}

.logo-icon {
    height: 80px;
    width: auto;
    max-width: 200px;
    display: block;
}

/* Navigation Styles */
.circular-nav {
    position: relative;
    display: flex;
    align-items: center;
    margin-right: auto;
    z-index: 10000;
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.6s ease 0.1s;
}

header.visible .circular-nav {
    opacity: 1;
    transform: translateX(0);
}

.nav-container {
    margin-left: auto;
    opacity: 0;
    transform: translateX(20px);
    transition: all 0.6s ease 0.3s;
}

header.visible .nav-container {
    opacity: 1;
    transform: translateX(0);
}

.header-icons {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Compact Price */
.compact-price {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(201, 169, 110, 0.3);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    border: 1px solid rgba(201, 169, 110, 0.2);
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.5s ease 0.4s;
}

header.visible .compact-price {
    opacity: 1;
    transform: translateY(0);
}

.compact-price .price {
    color: var(--primary);
    font-weight: 700;
}

/* Icon Buttons */
.icon-btn {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--primary);
    cursor: pointer;
    transition: var(--transition);
    padding: 8px;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    opacity: 0;
    transform: scale(0.8);
}

header.visible .icon-btn {
    opacity: 1;
    transform: scale(1);
}

#user-btn {
    transition: all 0.5s ease 0.5s;
}

#cart-btn {
    transition: all 0.5s ease 0.6s;
}

#favourite-btn {
    transition: all 0.5s ease 0.7s;
}

.icon-btn:hover {
    color: var(--secondary);
    background: rgba(201, 169, 110, 0.1);
}

.cart-count, .favourite-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--secondary);
    color: white;
    border-radius: 50%;
    width: 18px;
    height: 18px;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    opacity: 0;
    transform: scale(0);
    transition: all 0.3s ease 0.8s;
}

header.visible .cart-count,
header.visible .favourite-count {
    opacity: 1;
    transform: scale(1);
}

/* Circular Navigation Menu */
.nav-toggle {
    background: transparent;
    color: var(--primary);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    z-index: 10001;
}

.nav-toggle:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--secondary);
}

.nav-toggle i {
    font-size: 1.2rem;
    transition: var(--transition);
}

.nav-toggle.active i {
    transform: rotate(90deg);
    color: var(--secondary);
}

.circular-menu {
    position: absolute;
    top: 100%;
    left: -10px;
    width: 60px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    margin-top: 15px;
}

.circular-menu.active {
    opacity: 1;
    visibility: visible;
}

.nav-item {
    position: relative;
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    z-index: 10001;
    margin-top: 10px;
}

.nav-item:hover {
    background: var(--secondary);
    transform: translateY(0) scale(1.15);
    box-shadow: 0 8px 25px rgba(216, 200, 97, 0.4);
}

.nav-item i {
    font-size: 1.1rem;
}

.nav-item span {
    position: absolute;
    background: var(--primary);
    color: white;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.8rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    left: 60px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10002;
}

.nav-item:hover span {
    opacity: 1;
    visibility: visible;
}

.circular-menu.active .nav-item {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition-delay: var(--item-delay);
}

.circular-menu.active .nav-item:nth-child(1) { --item-delay: 0.05s; }
.circular-menu.active .nav-item:nth-child(2) { --item-delay: 0.1s; }
.circular-menu.active .nav-item:nth-child(3) { --item-delay: 0.15s; }
.circular-menu.active .nav-item:nth-child(4) { --item-delay: 0.2s; }
.circular-menu.active .nav-item:nth-child(5) { --item-delay: 0.25s; }

/* Sidebar Styles */
.sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 380px;
    height: 100vh;
    background: white;
    box-shadow: -5px 0 25px rgba(0, 0, 0, 0.15);
    z-index: 10002;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    display: flex;
    flex-direction: column;
}

.sidebar.active {
    right: 0;
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 10001;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, var(--blue), var(--accent));
    color: white;
}

.sidebar-header h3 {
    margin: 0;
    font-size: 1.3rem;
    color: white;
}

.close-sidebar {
    background: none;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: var(--transition);
}

.close-sidebar:hover {
    background: rgba(255, 255, 255, 0.1);
}

.sidebar-content {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
}

/* Auth Sidebar Styles */
.auth-tabs {
    display: flex;
    margin-bottom: 1.2rem;
    border-bottom: 1px solid #e5e7eb;
}

.auth-tab {
    flex: 1;
    padding: 0.7rem 0;
    text-align: center;
    background: none;
    border: none;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

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

.auth-tab.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--secondary);
    border-radius: 2px 2px 0 0;
}

.auth-form {
    width: 100%;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: 600;
    color: var(--primary);
    font-size: 0.85rem;
}

.form-control {
    width: 100%;
    padding: 0.7rem 0.9rem;
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    font-size: 0.85rem;
    transition: var(--transition);
    font-family: 'Inter', sans-serif;
}

.password-container {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--gray);
    cursor: pointer;
    font-size: 0.85rem;
    padding: 4px;
}

.auth-divider {
    display: flex;
    align-items: center;
    margin: 0.8rem 0;
    color: var(--gray);
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: #e5e7eb;
}

.auth-divider span {
    padding: 0 0.6rem;
    font-size: 0.8rem;
}

.social-login {
    display: flex;
    gap: 0.6rem;
    margin-bottom: 1.2rem;
}

.social-btn {
    flex: 1;
    padding: 0.6rem;
    border: 1px solid #e5e7eb;
    background: white;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    font-size: 0.8rem;
}

.form-success {
    display: none;
    text-align: center;
    padding: 1.2rem;
}

.form-success i {
    font-size: 2.5rem;
    color: var(--secondary);
    margin-bottom: 0.8rem;
}

.form-success h2 {
    color: var(--primary);
    margin-bottom: 0.6rem;
    font-size: 1.3rem;
}

.form-success p {
    color: var(--gray);
    margin-bottom: 1.2rem;
    font-size: 0.85rem;
    line-height: 1.4;
}

/* Favourites Sidebar Styles */
.favourite-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.favourite-item {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    border: 1px solid #e5e7eb;
    border-radius: var(--radius);
    background: #f8f9fa;
    transition: var(--transition);
}

.favourite-item:hover {
    border-color: var(--secondary);
    transform: translateY(-2px);
}

.favourite-item-image {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.favourite-item-image img {
    width: auto;
    height: 50px;
    object-fit: contain;
}

.favourite-item-details {
    flex: 1;
}

.favourite-item-details h4 {
    margin: 0 0 0.5rem 0;
    font-size: 0.95rem;
    color: var(--primary);
}

.favourite-item-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--gray);
    margin-bottom: 0.5rem;
}

.favourite-item-price {
    font-weight: 600;
    color: var(--primary);
    font-size: 0.9rem;
}

.favourite-item-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.favourite-empty {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--gray);
}

.favourite-empty i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #d1d5db;
}

/* Cart Sidebar Styles */
.cart-sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 380px;
    height: 100vh;
    background: white;
    box-shadow: -5px 0 25px rgba(0, 0, 0, 0.15);
    z-index: 10002;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    display: flex;
    flex-direction: column;
}

.cart-sidebar.active {
    right: 0;
}

.cart-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 10001;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.cart-overlay.active {
    opacity: 1;
    visibility: visible;
}

.cart-header {
    padding: 1.5rem;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, var(--blue), var(--accent));
    color: white;
}

.cart-header h3 {
    margin: 0;
    font-size: 1.3rem;
    color: white;
}

.close-cart {
    background: none;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: var(--transition);
}

.close-cart:hover {
    background: rgba(255, 255, 255, 0.1);
}

.cart-content {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
}

.cart-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.cart-item {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    border: 1px solid #e5e7eb;
    border-radius: var(--radius);
    background: #f8f9fa;
    transition: var(--transition);
}

.cart-item:hover {
    border-color: var(--secondary);
    transform: translateY(-2px);
}

.cart-item-image {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cart-item-image img {
    width: auto;
    height: 50px;
    object-fit: contain;
}

.cart-item-details {
    flex: 1;
}

.cart-item-details h4 {
    margin: 0 0 0.5rem 0;
    font-size: 0.95rem;
    color: var(--primary);
}

.cart-item-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--gray);
    margin-bottom: 0.5rem;
}

.cart-item-price {
    font-weight: 600;
    color: var(--primary);
    font-size: 0.9rem;
}

.cart-item-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.quantity-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 4px;
    padding: 0.25rem;
}

.quantity-btn {
    background: none;
    border: none;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: 2px;
    transition: var(--transition);
}

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

.quantity {
    min-width: 30px;
    text-align: center;
    font-weight: 600;
}

.remove-item {
    background: none;
    border: none;
    color: #ef4444;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 2px;
    transition: var(--transition);
    margin-left: auto;
}

.remove-item:hover {
    background: #ef4444;
    color: white;
}

.cart-empty {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--gray);
}

.cart-empty i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #d1d5db;
}

.cart-footer {
    padding: 1.5rem;
    border-top: 1px solid #e5e7eb;
    background: #f8f9fa;
}

.cart-totals {
    margin-bottom: 1.5rem;
}

.total-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.total-row.subtotal {
    color: var(--gray);
}

.total-row.shipping {
    color: var(--gray);
    font-size: 0.85rem;
}

.total-row.grand-total {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary);
    border-top: 1px solid #e5e7eb;
    padding-top: 0.5rem;
    margin-top: 0.5rem;
}

.checkout-btn {
    width: 100%;
    padding: 1rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.checkout-btn:hover {
    background: var(--secondary);
    transform: translateY(-2px);
}

.checkout-btn:disabled {
    background: #9ca3af;
    cursor: not-allowed;
    transform: none;
}

/* User Profile */
.user-profile {
    display: none;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary);
    font-weight: 600;
}

.user-profile.active {
    display: flex;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .logo {
        position: static;
        transform: none;
        margin: 0 auto;
    }
    
    .logo-icon {
        height: 60px;
    }
    
   
}

@media (max-width: 767px) {
    .header-container {
        flex-wrap: wrap;
        padding: 0.8rem 1rem;
    }
    
    .circular-nav {
        order: 1;
        flex: 1;
    }
    
    .logo {
        order: 2;
        flex: 0 0 auto;
        margin: 0;
    }
    
    .nav-container {
        order: 3;
        flex: 1;
        display: flex;
        justify-content: flex-end;
    }
    
    .logo-icon {
        height: 50px;
    }
    
    .header-icons {
        gap: 0.5rem;
    }
    
    .icon-btn {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
    
    .sidebar, .cart-sidebar {
        width: 100%;
        right: -100%;
    }
}

@media (max-width: 480px) {
    .sidebar, .cart-sidebar {
        width: 100%;
        right: -100%;
    }
    
    .cart-item, .favourite-item {
        flex-direction: column;
        text-align: center;
    }
    
    .cart-item-actions, .favourite-item-actions {
        justify-content: center;
    }
}
   .fade-in {
            opacity: 0;
            transform: translateY(20px);
            animation: fadeIn 0.8s ease forwards;
        }
        
        .delay-1 {
            animation-delay: 0.3s;
        }
        
        .delay-2 {
            animation-delay: 0.6s;
        }
        
        @keyframes fadeIn {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }