/* ============================================
   SHOPEE IMPORTER - CSS STYLES
   Modern, vibrant design inspired by Shopee
   ============================================ */

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Shopee-inspired colors */
    --primary: #ee4d2d;
    --primary-dark: #d73211;
    --primary-light: #ff6b4a;
    --secondary: #ff7337;
    --accent: #ffa726;
    
    /* Neutrals */
    --bg: #f5f5f5;
    --bg-card: #ffffff;
    --text: #222222;
    --text-secondary: #757575;
    --text-muted: #999999;
    --border: #e0e0e0;
    
    /* Status */
    --success: #00c853;
    --warning: #ffc107;
    --error: #f44336;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --shadow-xl: 0 12px 40px rgba(0,0,0,0.15);
    
    /* Transitions */
    --transition: 0.2s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   HEADER
   ============================================ */
.header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: white;
    font-weight: 800;
    font-size: 1.5rem;
}

.logo-icon {
    font-size: 2rem;
}

.logo-highlight {
    opacity: 0.9;
    font-weight: 600;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: #fff5f2;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background: var(--primary-dark);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-ghost:hover {
    background: var(--bg);
    border-color: var(--text-secondary);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.1rem;
}

/* ============================================
   CATEGORIES NAVIGATION
   ============================================ */
.categories-nav {
    background: white;
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
    position: sticky;
    top: 64px;
    z-index: 90;
}

.categories-scroll {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: none;
}

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

.category-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--bg);
    border: 2px solid transparent;
    border-radius: 50px;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.category-btn:hover {
    background: #fff5f2;
    color: var(--primary);
}

.category-btn.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border-color: transparent;
}

.category-icon {
    font-size: 1.2rem;
}

/* ============================================
   MAIN CONTENT
   ============================================ */
.main {
    padding: 24px 0 60px;
}

.stats-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    padding: 16px 20px;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.stats-count {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

/* ============================================
   PRODUCTS GRID
   ============================================ */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 20px;
}

/* Product Card */
.product-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.product-image {
    aspect-ratio: 1;
    overflow: hidden;
    position: relative;
    background: #f9f9f9;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    background: var(--primary);
    color: white;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.product-delete {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 32px;
    height: 32px;
    background: rgba(0,0,0,0.5);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    opacity: 0;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-card:hover .product-delete {
    opacity: 1;
}

.product-delete:hover {
    background: var(--error);
}

.product-info {
    padding: 16px;
}

.product-name {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 2.7em;
    margin-bottom: 8px;
}

.product-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.product-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 4px;
}

.product-rating::before {
    content: "⭐";
}

.product-link {
    display: block;
    width: 100%;
    padding: 10px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    text-align: center;
    text-decoration: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition);
}

.product-link:hover {
    opacity: 0.9;
    transform: scale(1.02);
}

/* ============================================
   EMPTY & LOADING STATES
   ============================================ */
.empty-state {
    text-align: center;
    padding: 80px 20px;
}

.empty-state.hidden {
    display: none;
}

.empty-icon {
    font-size: 5rem;
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-state h2 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--text);
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.loading-state {
    text-align: center;
    padding: 60px 20px;
}

.loading-state.hidden {
    display: none;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px;
}

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

/* ============================================
   MODAL
   ============================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal-overlay.hidden {
    display: none;
}

.modal {
    background: white;
    border-radius: 16px;
    width: 100%;
    max-width: 480px;
    box-shadow: var(--shadow-xl);
    animation: modalIn 0.2s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(10px);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}

.modal-header h2 {
    font-size: 1.25rem;
}

.modal-close {
    width: 36px;
    height: 36px;
    background: var(--bg);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--border);
}

.modal-body {
    padding: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text);
}

.input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.input:focus {
    outline: none;
    border-color: var(--primary);
}

.quick-import {
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.quick-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.quick-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.quick-btn {
    padding: 8px 14px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-family: inherit;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.quick-btn:hover {
    background: #fff5f2;
    border-color: var(--primary);
    color: var(--primary);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px;
    background: var(--bg);
    border-radius: 0 0 16px 16px;
}

.btn-loading {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.btn-loading.hidden {
    display: none;
}

/* ============================================
   TOAST NOTIFICATION
   ============================================ */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    background: var(--text);
    color: white;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    font-size: 0.95rem;
    z-index: 1100;
    animation: toastIn 0.3s ease;
}

.toast.hidden {
    display: none;
}

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

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

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .header-content {
        flex-wrap: wrap;
    }
    
    .logo {
        font-size: 1.25rem;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .product-info {
        padding: 12px;
    }
    
    .product-name {
        font-size: 0.8rem;
    }
    
    .product-price {
        font-size: 1rem;
    }
    
    .stats-bar {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .category-btn {
        padding: 8px 14px;
        font-size: 0.8rem;
    }
}

/* Hidden utility */
.hidden {
    display: none !important;
}