/**
 * ECOM - Modern Design System
 * Enhanced UI with modern aesthetics, smooth animations, and improved UX
 */

/* ========================================
   DESIGN TOKENS & VARIABLES
   ======================================== */
:root {
    /* Colors - Modern & Vibrant */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --accent: #f59e0b;
    --accent-dark: #d97706;

    /* Neutrals */
    --bg: #fafafa;
    --bg-secondary: #f4f4f5;
    --card-bg: #ffffff;
    --text: #18181b;
    --text-secondary: #71717a;
    --border: #e4e4e7;
    --border-hover: #d4d4d8;

    /* Semantic Colors */
    --success: #22c55e;
    --success-light: #dcfce7;
    --error: #ef4444;
    --error-light: #fee2e2;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --info: #3b82f6;
    --info-light: #dbeafe;

    /* Spacing Scale */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', 'Georgia', serif;

    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --shadow-colored: 0 10px 40px -10px rgba(99, 102, 241, 0.3);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Dark Mode */
[data-theme="dark"] {
    --bg: #09090b;
    --bg-secondary: #18181b;
    --card-bg: #27272a;
    --text: #fafafa;
    --text-secondary: #a1a1aa;
    --border: #3f3f46;
    --border-hover: #52525b;

    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.3), 0 1px 2px -1px rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.3), 0 8px 10px -6px rgb(0 0 0 / 0.3);
    --shadow-colored: 0 10px 40px -10px rgba(99, 102, 241, 0.5);
}

/* ========================================
   BASE STYLES
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text);
}

/* ========================================
   MODERN BUTTON SYSTEM
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    text-decoration: none;
}

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

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn:active {
    transform: translateY(1px);
}

/* Button Variants */
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: var(--shadow-md);
}

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

.btn-accent {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: white;
    box-shadow: var(--shadow-md);
}

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

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

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

.btn-ghost {
    background: transparent;
    color: var(--text);
}

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

/* Button Sizes */
.btn-sm {
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--text-sm);
}

.btn-lg {
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--text-lg);
}

/* ========================================
   MODERN CARD SYSTEM
   ======================================== */
.card {
    background: var(--card-bg);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all var(--transition-base);
}

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

.card-interactive {
    cursor: pointer;
}

.card-interactive:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-colored);
}

/* ========================================
   PRODUCT CARD - MODERN DESIGN
   ======================================== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.product-card {
    background: var(--card-bg);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all var(--transition-base);
    position: relative;
    group: hover;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
    border-color: transparent;
}

.product-card__image-wrapper {
    position: relative;
    aspect-ratio: 1;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg));
}

.product-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.product-card:hover .product-card__image {
    transform: scale(1.1);
}

.product-card__badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: var(--accent);
    color: white;
    font-size: var(--text-xs);
    font-weight: 700;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-md);
}

.product-card__badge--new {
    background: var(--info);
}

.product-card__badge--sale {
    background: var(--error);
}

.product-card__wishlist {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    width: 40px;
    height: 40px;
    background: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow);
    opacity: 0;
    transform: scale(0.8);
}

.product-card:hover .product-card__wishlist {
    opacity: 1;
    transform: scale(1);
}

.product-card__wishlist:hover {
    background: var(--error);
    color: white;
    transform: scale(1.1);
}

.product-card__content {
    padding: var(--space-lg);
}

.product-card__title {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--text);
    transition: color var(--transition-base);
}

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

.product-card__category {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.product-card__price-wrapper {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.product-card__price {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--primary);
}

.product-card__price-original {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    text-decoration: line-through;
}

.product-card__discount {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--error);
    background: var(--error-light);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
}

.product-card__actions {
    display: flex;
    gap: var(--space-sm);
}

.product-card__cta {
    flex: 1;
    opacity: 0;
    transform: translateY(10px);
    transition: all var(--transition-base);
}

.product-card:hover .product-card__cta {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   HERO SECTION - MODERN
   ======================================== */
.hero-modern {
    position: relative;
    padding: var(--space-3xl) var(--space-xl);
    min-height: 600px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(135deg,
        rgba(99, 102, 241, 0.05) 0%,
        rgba(245, 158, 11, 0.05) 100%);
}

.hero-modern::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
}

.hero-modern::after {
    content: '';
    position: absolute;
    bottom: -50%;
    left: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 15s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-50px, 50px) scale(1.1); }
}

.hero-modern__content {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-modern__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: white;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--space-xl);
    box-shadow: var(--shadow-md);
    animation: slideUp 0.8s ease-out;
}

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

.hero-modern__title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: var(--space-lg);
    line-height: 1.1;
    animation: slideUp 0.8s ease-out 0.2s both;
}

.hero-modern__title-gradient {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-modern__description {
    font-size: var(--text-xl);
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
    max-width: 600px;
    animation: slideUp 0.8s ease-out 0.4s both;
}

.hero-modern__actions {
    display: flex;
    gap: var(--space-lg);
    flex-wrap: wrap;
    animation: slideUp 0.8s ease-out 0.6s both;
}

/* ========================================
   INPUT & FORM ELEMENTS
   ======================================== */
.input {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    font-size: var(--text-base);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--card-bg);
    color: var(--text);
    transition: all var(--transition-base);
}

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

.input::placeholder {
    color: var(--text-secondary);
}

/* ========================================
   BADGES & TAGS
   ======================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-xs) var(--space-md);
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-primary {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
}

.badge-success {
    background: var(--success-light);
    color: var(--success);
}

.badge-error {
    background: var(--error-light);
    color: var(--error);
}

.badge-warning {
    background: var(--warning-light);
    color: var(--warning);
}

/* ========================================
   LOADING & SKELETON
   ======================================== */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-secondary) 25%,
        var(--border) 50%,
        var(--bg-secondary) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: var(--radius-md);
}

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

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 768px) {
    :root {
        --space-xl: 1.5rem;
        --space-2xl: 2rem;
        --space-3xl: 2.5rem;
    }

    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: var(--space-md);
    }

    .hero-modern {
        padding: var(--space-2xl) var(--space-lg);
        min-height: 500px;
    }

    .hero-modern__actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.text-center {
    text-align: center;
}

.text-gradient {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}