/* ============================================
   SOURCEX B2B HOMEPAGE STYLES
   ============================================ */

:root {
    --primary: #6B21E5;        /* Deep Purple */
    --primary-dark: #4A0D9C;    /* Darker Purple */
    --primary-light: #9B4DFF;   /* Lighter Purple */
    --primary-gradient: linear-gradient(135deg, #6B21E5, #9B4DFF);
    --secondary: #10B981;
    --accent: #F59E0B;
    --danger: #EF4444;
    --dark: #1F2937;
    --gray-800: #1F2937;
    --gray-700: #374151;
    --gray-600: #4B5563;
    --gray-500: #6B7280;
    --gray-400: #9CA3AF;
    --gray-300: #D1D5DB;
    --gray-200: #E5E7EB;
    --gray-100: #F3F4F6;
    --white: #FFFFFF;
    --shadow: 0 2px 8px rgba(107, 33, 229, 0.08);
    --shadow-lg: 0 4px 16px rgba(107, 33, 229, 0.12);
    --radius: 12px;
    --radius-sm: 8px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: var(--gray-100);
    color: var(--dark);
    line-height: 1.4;
    padding-bottom: 70px;
}

/* ============================================
   HEADER WITH 3D CUBE LOGO
   ============================================ */
.header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 24px;
}

/* 3D Cube Logo */
.logo-cube {
    position: relative;
    width: 40px;
    height: 40px;
    perspective: 800px;
}

.logo-cube .cube {
    position: absolute;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    transform: rotateX(18deg) rotateY(28deg);
    transition: transform 0.3s ease;
}

.logo:hover .cube {
    transform: rotateX(28deg) rotateY(38deg);
}

.logo-cube .face {
    position: absolute;
    width: 40px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.8);
    background: var(--primary-gradient);
    box-shadow: inset 0 0 15px rgba(107, 33, 229, 0.5), 0 0 10px rgba(155, 77, 255, 0.3);
    border-radius: 4px;
}

.logo-cube .front {
    transform: translateZ(20px);
    background: linear-gradient(135deg, #6B21E5, #9B4DFF);
}

.logo-cube .right {
    transform: rotateY(90deg) translateZ(20px);
    background: linear-gradient(135deg, #4A0D9C, #6B21E5);
}

.logo-cube .top {
    transform: rotateX(90deg) translateZ(20px);
    background: linear-gradient(135deg, #9B4DFF, #B47BFF);
}

.logo-text {
    color: var(--primary);
    font-size: 24px;
    font-weight: 700;
}

.logo-text span {
    color: var(--primary-light);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.search-btn {
    background: none;
    border: none;
    color: var(--gray-600);
    font-size: 20px;
    cursor: pointer;
    padding: 8px;
}

.search-btn:hover {
    color: var(--primary);
}

/* ============================================
   NAVIGATION TABS
   ============================================ */
.nav-tabs {
    display: flex;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 0 16px;
    gap: 24px;
    overflow-x: auto;
    scrollbar-width: none;
}

.nav-tabs::-webkit-scrollbar {
    display: none;
}

.nav-tab {
    padding: 12px 0;
    color: var(--gray-500);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    position: relative;
    white-space: nowrap;
}

.nav-tab.active {
    color: var(--primary);
    font-weight: 600;
}

.nav-tab.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
}

/* ============================================
   SWIPER COMMON
   ============================================ */
.swiper {
    width: 100%;
    overflow: hidden;
}

.swiper-wrapper {
    display: flex;
}

.swiper-slide {
    flex-shrink: 0;
    width: auto;
    height: auto;
}

/* ============================================
   BANNER SECTION
   ============================================ */
.banner-swiper {
    height: 160px;
    margin: 12px 0;
}

.banner-slide {
    width: 100%;
    height: 100%;
    border-radius: var(--radius);
    margin: 0 16px;
    position: relative;
    overflow: hidden;
    background-size: cover;
    background-position: center;
}

.banner-slide img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.8;
}

.banner-content {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 20px;
    border-radius: var(--radius);
}

.banner-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 4px;
}

.banner-subtitle {
    font-size: 13px;
    opacity: 0.9;
    margin-bottom: 8px;
}

.banner-btn {
    background: white;
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 13px;
    width: fit-content;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
    color: var(--primary);
}

.banner-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(107, 33, 229, 0.2);
}

.swiper-pagination-bullet {
    background: white;
    opacity: 0.5;
}

.swiper-pagination-bullet-active {
    opacity: 1;
    background: var(--primary);
}

/* ============================================
   SECTION HEADERS
   ============================================ */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 16px 8px;
}

.section-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    padding: 0 16px;
    margin-bottom: 12px;
}

.view-all {
    color: var(--primary);
    text-decoration: none;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 16px 16px 8px;
}

/* ============================================
   QUICK ACTIONS
   ============================================ */
.quick-actions-section {
    background: var(--white);
    padding: 8px 0;
    margin: 8px 0;
}

.quick-actions-swiper {
    padding: 4px 16px;
}

.quick-action-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--gray-700);
    padding: 8px;
    width: 70px;
}

.quick-action-icon {
    width: 48px;
    height: 48px;
    background: var(--gray-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 6px;
    font-size: 20px;
    transition: all 0.2s;
}

.quick-action-item:hover .quick-action-icon {
    background: var(--primary);
    color: white;
}

.quick-action-label {
    font-size: 11px;
    font-weight: 500;
    text-align: center;
    white-space: nowrap;
}

/* ============================================
   AUTH PROMPT BANNER
   ============================================ */
.auth-prompt-section {
    padding: 16px;
    margin: 8px 16px;
    background: var(--primary-gradient);
    border-radius: var(--radius);
    color: white;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.auth-prompt-content {
    text-align: center;
}

.auth-prompt-content h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.auth-prompt-content p {
    font-size: 14px;
    margin-bottom: 16px;
    opacity: 0.9;
}

.auth-prompt-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.login-btn, .register-btn {
    flex: 1;
    padding: 12px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s;
    max-width: 150px;
}

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

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.register-btn {
    background: rgba(255,255,255,0.2);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
}

.register-btn:hover {
    background: rgba(255,255,255,0.3);
}

/* ============================================
   PRODUCT CARDS
   ============================================ */
.product-card {
    flex: 0 0 160px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    margin-right: 12px;
    transition: all 0.2s;
}

.product-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.product-image {
    width: 160px;
    height: 160px;
    background: var(--gray-100);
    position: relative;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-badge {
    position: absolute;
    top: 8px;
    left: 8px;
    background: var(--danger);
    color: white;
    font-size: 10px;
    padding: 4px 8px;
    border-radius: 4px;
    font-weight: 600;
    z-index: 2;
}

.product-badge.featured {
    background: var(--accent);
    color: var(--dark);
}

.product-badge.new {
    background: var(--secondary);
    color: white;
}

.product-badge.recommendation {
    background: var(--primary);
    color: white;
    font-size: 12px;
    padding: 2px 6px;
}

.product-badge.recommendation:hover::after {
    content: attr(title);
    position: absolute;
    bottom: 100%;
    left: 0;
    background: rgba(0,0,0,0.8);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    white-space: nowrap;
    z-index: 10;
}

.product-info {
    padding: 10px;
}

.product-title {
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.product-price {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 2px;
}

.product-moq {
    font-size: 11px;
    color: var(--gray-500);
}

/* ============================================
   CATEGORIES SECTION
   ============================================ */
.categories-section {
    background: var(--white);
    padding: 16px 0;
    margin: 8px 0;
}

.categories-swiper {
    padding: 4px 16px;
}

.category-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--gray-700);
    width: 70px;
}

.category-image {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    overflow: hidden;
    margin-bottom: 6px;
    background: var(--gray-100);
    border: 2px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.category-item:hover .category-image {
    border-color: var(--primary);
    transform: scale(1.05);
}

.category-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.category-image i {
    font-size: 20px;
    color: var(--primary);
}

.category-name {
    font-size: 11px;
    font-weight: 500;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 70px;
}

/* ============================================
   HOT SUPPLIERS SECTION
   ============================================ */
.hot-suppliers-section {
    background: var(--white);
    padding: 16px 0;
    margin: 8px 0;
}

.suppliers-swiper {
    padding: 4px 16px;
}

.hot-supplier-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--gray-700);
    width: 70px;
    position: relative;
}

.hot-supplier-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    overflow: hidden;
    margin-bottom: 6px;
    background: var(--primary-gradient);
    border: 2px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: all 0.2s;
}

.hot-supplier-card:hover .hot-supplier-avatar {
    border-color: var(--primary);
    transform: scale(1.05);
}

.hot-supplier-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hot-supplier-avatar span {
    color: white;
    font-weight: bold;
    font-size: 18px;
}

.hot-supplier-name {
    font-size: 11px;
    font-weight: 500;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 70px;
    margin-bottom: 2px;
}

.hot-badge {
    position: absolute;
    top: -4px;
    right: 0;
    background: var(--danger);
    color: white;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    border: 2px solid white;
    z-index: 2;
}

.verified-badge-small {
    position: absolute;
    bottom: 0;
    right: 0;
    background: var(--secondary);
    color: white;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 8px;
    border: 2px solid white;
}

/* ============================================
   RECENT ITEMS SECTION
   ============================================ */
.recent-items-section {
    background: var(--white);
    padding: 16px 0;
    margin: 8px 0;
}

.recent-swiper {
    padding: 4px 16px;
}

/* ============================================
   CATEGORY PRODUCT SECTIONS
   ============================================ */
.category-product-section {
    background: var(--white);
    padding: 16px 0;
    margin: 8px 0;
}

.section-header-with-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px;
    margin-bottom: 12px;
}

.section-header-with-link h2 {
    font-size: 16px;
    font-weight: 700;
    color: var(--dark);
}

.section-header-with-link h2 i {
    color: var(--primary);
    margin-right: 6px;
}

.section-link {
    color: var(--primary);
    text-decoration: none;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.products-scroll {
    overflow-x: auto;
    scrollbar-width: none;
    padding: 4px 16px;
}

.products-scroll::-webkit-scrollbar {
    display: none;
}

.products-track {
    display: flex;
    gap: 12px;
    width: max-content;
}

/* ============================================
   PROFESSIONAL B2B FOOTER
   ============================================ */
.site-footer {
    background: var(--gray-800);
    color: var(--gray-300);
    margin-top: 30px;
    padding: 40px 0 0;
    border-top: 4px solid var(--primary);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.footer-logo .logo-cube.small {
    width: 32px;
    height: 32px;
    perspective: 600px;
}

.footer-logo .logo-cube.small .cube {
    transform: rotateX(18deg) rotateY(28deg);
}

.footer-logo .logo-cube.small .face {
    width: 32px;
    height: 32px;
}

.footer-logo .logo-cube.small .front {
    transform: translateZ(16px);
}

.footer-logo .logo-cube.small .right {
    transform: rotateY(90deg) translateZ(16px);
}

.footer-logo .logo-cube.small .top {
    transform: rotateX(90deg) translateZ(16px);
}

.footer-logo-text {
    font-size: 20px;
    font-weight: 700;
    color: white;
}

.footer-logo-text span {
    color: var(--primary-light);
}

.footer-about {
    font-size: 13px;
    line-height: 1.6;
    color: var(--gray-400);
}

.footer-social {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.2s;
}

.social-link:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.footer-title {
    color: white;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 10px;
    position: relative;
    padding-bottom: 8px;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--primary);
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
}

.footer-links a i {
    font-size: 10px;
    color: var(--primary);
}

.footer-links a:hover {
    color: white;
    transform: translateX(5px);
}

.footer-contact {
    list-style: none;
    padding: 0;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 13px;
    color: var(--gray-400);
}

.footer-contact li i {
    width: 20px;
    color: var(--primary);
    font-size: 14px;
}

.footer-badge {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.footer-badge img {
    background: var(--primary);
    border-radius: 4px;
    padding: 5px;
}

.footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding: 20px 0;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    font-size: 12px;
    color: var(--gray-500);
}

.footer-bottom-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-bottom-links a {
    color: var(--gray-500);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-bottom-links a:hover {
    color: var(--primary);
}

/* Meta AI Credit */
.meta-credit {
    text-align: center;
    padding: 10px;
    background: var(--gray-900);
    color: var(--gray-500);
    font-size: 12px;
    border-top: 1px solid var(--gray-800);
}

.meta-credit span {
    color: var(--primary-light);
    margin-right: 4px;
}

/* ============================================
   BOTTOM NAVIGATION
   ============================================ */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    display: flex;
    padding: 8px 0 12px;
    z-index: 1000;
}

.nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--gray-400);
    font-size: 11px;
    gap: 4px;
    transition: color 0.2s;
}

.nav-item i {
    font-size: 20px;
}

.nav-item.active {
    color: var(--primary);
}

.nav-item:hover {
    color: var(--primary);
}

/* ============================================
   TOAST NOTIFICATION
   ============================================ */
.toast {
    position: fixed;
    bottom: 80px;
    left: 16px;
    right: 16px;
    background: rgba(0,0,0,0.8);
    color: white;
    padding: 12px 20px;
    border-radius: 30px;
    font-size: 14px;
    text-align: center;
    z-index: 2000;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s;
    max-width: 400px;
    margin: 0 auto;
    pointer-events: none;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.toast.success {
    background: var(--secondary);
}

.toast.error {
    background: var(--danger);
}

/* ============================================
   LOADING OVERLAY
   ============================================ */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(5px);
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    z-index: 3000;
}

.loading-overlay.show {
    display: flex;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--gray-300);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

#loadingMessage {
    color: white;
    font-size: 16px;
    font-weight: 500;
}

/* ============================================
   SKELETON LOADERS
   ============================================ */
.skeleton {
    background: linear-gradient(90deg, var(--gray-200) 25%, var(--gray-100) 50%, var(--gray-200) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

.skeleton-text {
    background: var(--gray-200);
    border-radius: 4px;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (min-width: 640px) {
    .product-card {
        flex: 0 0 180px;
    }
    
    .product-image {
        width: 180px;
        height: 180px;
    }
}

@media (min-width: 768px) {
    .category-item,
    .hot-supplier-card {
        width: 80px;
    }
    
    .category-image,
    .hot-supplier-avatar {
        width: 64px;
        height: 64px;
    }
    
    .category-name,
    .hot-supplier-name {
        max-width: 80px;
        font-size: 12px;
    }
}

@media (min-width: 1024px) {
    .header-container,
    .nav-tabs,
    .banner-swiper,
    .section-header,
    .categories-swiper,
    .suppliers-swiper,
    .recent-swiper,
    .products-scroll {
        max-width: 1200px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .banner-swiper {
        height: 200px;
    }
    
    .product-card {
        flex: 0 0 200px;
    }
    
    .product-image {
        width: 200px;
        height: 200px;
    }
    
    .category-item,
    .hot-supplier-card {
        width: 90px;
    }
    
    .category-image,
    .hot-supplier-avatar {
        width: 70px;
        height: 70px;
    }
}

/* ============================================
   RECOMMENDATION TOOLTIP
   ============================================ */
.recommendation-reason {
    position: relative;
    display: inline-block;
}

.recommendation-reason:hover .reason-tooltip {
    visibility: visible;
    opacity: 1;
}

.reason-tooltip {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0,0,0,0.8);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    white-space: nowrap;
    transition: opacity 0.2s;
    z-index: 10;
    margin-bottom: 5px;
}

.reason-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: rgba(0,0,0,0.8) transparent transparent transparent;
}