/* =====================================================
   Unit Care - Advanced Professional Theme
   Inspired by modern e-commerce (Daraz/Alibaba style)
   ===================================================== */

:root {
    /* Primary Colors - Professional Blue & Orange */
    --primary-color: #1a73e8;
    --primary-dark: #0d47a1;
    --primary-light: #4285f4;
    --secondary-color: #ff6b35;
    --secondary-dark: #e85d2a;
    --secondary-light: #ff8c5a;
    
    /* Accent Colors */
    --success-color: #00c853;
    --light-color: #f8f9fa;
    --border-color: #dee2e6;
    --cta-background: #1a409c;
    --cta-text-color: #ffffff;
    --footer-background: #2a2220;
    --footer-text-color: #e1d3d0;
    --info-color: #29b6f6;
    
    /* Neutral Colors */
    --dark: #212121;
    --gray-dark: #424242;
    --gray: #757575;
    --gray-light: #e0e0e0;
    --gray-lighter: #f5f5f5;
    --white: #ffffff;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-warm: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px 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 48px rgba(0,0,0,0.15);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 50%;
}

/* =====================================================
   Smooth Scrolling & Base Animations
   ===================================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', 'Segoe UI', sans-serif;
    color: var(--dark);
    background: var(--gray-lighter);
    overflow-x: hidden;
}

/* =====================================================
   Product Card - Advanced Design
   ===================================================== */

.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.product-card:hover::before {
    transform: scaleX(1);
}

/* Product Image Container */
.product-image-container {
    position: relative;
    overflow: hidden;
    padding-top: 100%; /* 1:1 Aspect Ratio */
    background: var(--gray-lighter);
}

.product-image-container img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.product-card:hover .product-image-container img {
    transform: scale(1.1);
}

/* Product Badges */
.product-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 2;
}

.badge-sale {
    background: var(--gradient-secondary);
    color: var(--white);
    padding: 6px 12px;
    border-radius: var(--radius-md);
    font-size: 12px;
    font-weight: 600;
    box-shadow: var(--shadow-md);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.badge-new {
    background: var(--success-color);
    color: var(--white);
    padding: 6px 12px;
    border-radius: var(--radius-md);
    font-size: 12px;
    font-weight: 600;
    margin-left: 6px;
}

/* Quick Actions */
.product-quick-actions {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    opacity: 0;
    transform: translateX(20px);
    transition: all var(--transition-normal);
}

.product-card:hover .product-quick-actions {
    opacity: 1;
    transform: translateX(0);
}

.quick-action-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--white);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
}

.quick-action-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: scale(1.1);
}

/* Product Info */
.product-info {
    padding: 16px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-category {
    color: var(--gray);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.product-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color var(--transition-fast);
}

.product-card:hover .product-title {
    color: var(--primary-color);
}

/* Rating */
.product-rating {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.stars {
    color: #ffa726;
    font-size: 14px;
}

.rating-count {
    color: var(--gray);
    font-size: 13px;
}

/* Price */
.product-price {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

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

.old-price {
    font-size: 16px;
    color: var(--gray);
    text-decoration: line-through;
}

.discount-percent {
    background: var(--secondary-color);
    color: var(--white);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
}

/* Stock Status */
.stock-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    margin-bottom: 12px;
}

.stock-status.in-stock {
    color: var(--success-color);
}

.stock-status.low-stock {
    color: var(--warning-color);
}

.stock-status.out-of-stock {
    color: var(--danger-color);
}

/* Add to Cart Button */
.add-to-cart-btn {
    width: 100%;
    padding: 12px;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.add-to-cart-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: var(--radius-full);
    background: rgba(255,255,255,0.3);
    transform: translate(-50%, -50%);
    transition: width var(--transition-slow), height var(--transition-slow);
}

.add-to-cart-btn:hover::before {
    width: 300px;
    height: 300px;
}

.add-to-cart-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* =====================================================
   Category Card - Modern Design
   ===================================================== */

.category-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
    position: relative;
    cursor: pointer;
}

.category-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.category-card:hover::after {
    opacity: 0.1;
}

.category-card:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.category-image {
    height: 200px;
    background: var(--gray-lighter);
    position: relative;
    overflow: hidden;
}

.category-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.category-card:hover .category-image img {
    transform: scale(1.15) rotate(2deg);
}

.category-info {
    padding: 20px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.category-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.category-count {
    color: var(--gray);
    font-size: 14px;
}

/* =====================================================
   Hero Banner - Animated
   ===================================================== */

.hero-banner {
    position: relative;
    height: 500px;
    overflow: hidden;
    border-radius: var(--radius-xl);
    margin-bottom: 40px;
}

.hero-slide {
    position: relative;
    height: 100%;
    background-size: cover;
    background-position: center;
}

.hero-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.2) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 60px;
    color: var(--white);
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
    animation: slideInLeft 0.8s ease;
}

.hero-subtitle {
    font-size: 24px;
    margin-bottom: 32px;
    opacity: 0.9;
    animation: slideInLeft 0.8s ease 0.2s backwards;
}

.hero-btn {
    display: inline-block;
    padding: 16px 40px;
    background: var(--gradient-warm);
    color: var(--white);
    text-decoration: none;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 16px;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    animation: slideInLeft 0.8s ease 0.4s backwards;
}

.hero-btn:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-xl);
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* =====================================================
   Section Headers
   ===================================================== */

.section-header {
    text-align: center;
    margin-bottom: 48px;
    position: relative;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
}

.section-subtitle {
    color: var(--gray);
    font-size: 16px;
}

/* =====================================================
   Loading Animation
   ===================================================== */

.loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray-light);
    border-top-color: var(--primary-color);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

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

/* =====================================================
   Scroll Animations
   ===================================================== */

.fade-in {
    animation: fadeIn 0.6s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in-right {
    animation: slideInRight 0.6s ease;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* =====================================================
   Responsive Design
   ===================================================== */

@media (max-width: 768px) {
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .product-card:hover {
        transform: translateY(-4px);
    }
}

/* =====================================================
   Custom Scrollbar
   ===================================================== */

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--gray-lighter);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}