/* ========================================
   MEGASHOP - BEAUTIFUL MODERN DESIGN
   ======================================== */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Poppins:wght@300;400;500;600;700;800;900&display=swap');

/* ========================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   ======================================== */
:root {
    /* Beautiful Color Palette */
    --primary: #667eea;
    --primary-dark: #5a67d8;
    --primary-light: #9f7aea;
    --secondary: #ed8936;
    --secondary-dark: #dd6b20;
    --accent: #48bb78;
    --accent-dark: #38a169;
    
    /* Semantic Colors */
    --success: #48bb78;
    --success-dark: #38a169;
    --warning: #ed8936;
    --warning-dark: #dd6b20;
    --error: #f56565;
    --error-dark: #e53e3e;
    --info: #4299e1;
    --info-dark: #3182ce;
    
    /* Beautiful Neutral Colors */
    --white: #ffffff;
    --gray-50: #f7fafc;
    --gray-100: #edf2f7;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e0;
    --gray-400: #a0aec0;
    --gray-500: #718096;
    --gray-600: #4a5568;
    --gray-700: #2d3748;
    --gray-800: #1a202c;
    --gray-900: #171923;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-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;
    --text-6xl: 3.75rem;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Beautiful Shadows */
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-Index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.7;
    color: var(--gray-700);
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ========================================
   BEAUTIFUL TYPOGRAPHY
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-800);
    margin-bottom: var(--space-4);
    letter-spacing: -0.025em;
}

h1 { 
    font-size: var(--text-5xl);
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 { 
    font-size: var(--text-4xl);
    font-weight: 700;
}

h3 { 
    font-size: var(--text-3xl);
    font-weight: 600;
}

h4 { 
    font-size: var(--text-2xl);
    font-weight: 600;
}

h5 { 
    font-size: var(--text-xl);
    font-weight: 600;
}

h6 { 
    font-size: var(--text-lg);
    font-weight: 600;
}

p {
    margin-bottom: var(--space-4);
    line-height: 1.7;
    color: var(--gray-600);
}

.lead {
    font-size: var(--text-xl);
    font-weight: 400;
    line-height: 1.6;
    color: var(--gray-500);
}

.text-muted {
    color: var(--gray-500);
}

.small {
    font-size: var(--text-sm);
    line-height: 1.5;
}

/* ========================================
   BEAUTIFUL LINKS
   ======================================== */
a {
    color: var(--primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    position: relative;
}

a:hover {
    color: var(--primary-dark);
    transform: translateY(-1px);
}

a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
    transition: width var(--transition-normal);
}

a:hover::after {
    width: 100%;
}

/* ========================================
   BEAUTIFUL NAVBAR
   ======================================== */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    position: sticky;
    top: 0;
    z-index: var(--z-fixed);
}

.navbar-brand {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: var(--text-2xl);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    transition: all var(--transition-normal);
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.navbar .nav-link {
    font-weight: 500;
    color: var(--gray-700);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.1), transparent);
    transition: left var(--transition-slow);
}

.nav-link:hover::before {
    left: 100%;
}

.navbar .nav-link:hover {
    color: var(--primary);
    background: rgba(102, 126, 234, 0.05);
    transform: translateY(-2px);
}

.navbar .nav-link.active {
    color: var(--primary);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(159, 122, 234, 0.1) 100%);
}

/* ========================================
   BEAUTIFUL BUTTONS
   ======================================== */
.btn {
    font-family: var(--font-primary);
    font-weight: 600;
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-lg);
    border: none;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    text-transform: none;
    letter-spacing: 0.025em;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    color: var(--white);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--gray-600) 0%, var(--gray-700) 100%);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--gray-700) 0%, var(--gray-800) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    color: var(--white);
}

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

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

.btn-success {
    background: linear-gradient(135deg, var(--success) 0%, var(--accent) 100%);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-success:hover {
    background: linear-gradient(135deg, var(--success-dark) 0%, var(--accent-dark) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    color: var(--white);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning) 0%, var(--secondary) 100%);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-warning:hover {
    background: linear-gradient(135deg, var(--warning-dark) 0%, var(--secondary-dark) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    color: var(--white);
}

/* ========================================
   BEAUTIFUL CARDS
   ======================================== */
.card {
    background: var(--white);
    border: none;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    overflow: hidden;
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 50%, var(--secondary) 100%);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.card:hover::before {
    opacity: 1;
}

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

.card-header {
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
    border-bottom: 1px solid var(--gray-200);
    padding: var(--space-6);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.card-body {
    padding: var(--space-6);
}

.card-footer {
    background: var(--gray-50);
    border-top: 1px solid var(--gray-200);
    padding: var(--space-6);
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

/* ========================================
   BEAUTIFUL PRODUCT CARDS
   ======================================== */
.product-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 50%, var(--secondary) 100%);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
    transform-origin: left;
}

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

.product-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: var(--shadow-2xl);
}

.product-image {
    position: relative;
    overflow: hidden;
    height: 250px;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
}

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

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

.product-badges {
    position: absolute;
    top: var(--space-4);
    left: var(--space-4);
    z-index: 2;
}

.badge {
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2);
    display: block;
}

.badge-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--white);
}

.badge-success {
    background: linear-gradient(135deg, var(--success) 0%, var(--accent) 100%);
    color: var(--white);
}

.badge-danger {
    background: linear-gradient(135deg, var(--error) 0%, var(--error-dark) 100%);
    color: var(--white);
}

.badge-warning {
    background: linear-gradient(135deg, var(--warning) 0%, var(--secondary) 100%);
    color: var(--white);
}

.product-actions {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    opacity: 0;
    transform: translateX(20px);
    transition: all var(--transition-normal);
}

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

.product-actions .btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.product-info {
    padding: var(--space-6);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--space-2);
    line-height: 1.4;
}

.product-title a {
    color: inherit;
    text-decoration: none;
}

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

.product-price {
    margin-top: auto;
    padding-top: var(--space-4);
}

.current-price {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--primary);
    margin-right: var(--space-2);
}

.old-price {
    font-size: var(--text-sm);
    color: var(--gray-400);
    text-decoration: line-through;
}

.product-rating {
    display: flex;
    align-items: center;
    margin: var(--space-3) 0;
}

.rating-stars {
    color: var(--warning);
    margin-right: var(--space-2);
}

.rating-count {
    font-size: var(--text-sm);
    color: var(--gray-500);
}

/* ========================================
   BEAUTIFUL FORMS
   ======================================== */
.form-control {
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
    transition: all var(--transition-fast);
    background: var(--white);
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    outline: none;
    transform: translateY(-1px);
}

.form-control::placeholder {
    color: var(--gray-400);
}

.input-group .form-control {
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.input-group .btn {
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

/* ========================================
   BEAUTIFUL HERO SECTION
   ======================================== */
.hero-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 50%, var(--secondary) 100%);
    color: var(--white);
    padding: var(--space-20) 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><radialGradient id="a" cx="50%" cy="50%"><stop offset="0%" stop-color="%23ffffff" stop-opacity="0.1"/><stop offset="100%" stop-color="%23ffffff" stop-opacity="0"/></radialGradient></defs><circle cx="200" cy="200" r="300" fill="url(%23a)"/><circle cx="800" cy="800" r="200" fill="url(%23a)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: var(--text-6xl);
    font-weight: 800;
    margin-bottom: var(--space-6);
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
    font-size: var(--text-xl);
    margin-bottom: var(--space-8);
    opacity: 0.9;
    font-weight: 300;
}

.hero-buttons {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.hero-icon i {
    font-size: 8rem;
    color: rgba(255, 255, 255, 0.8);
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* ========================================
   BEAUTIFUL ANIMATIONS
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

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

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

.animate-fade-in-left {
    animation: fadeInLeft 0.8s ease-out;
}

.animate-fade-in-right {
    animation: fadeInRight 0.8s ease-out;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

/* ========================================
   BEAUTIFUL UTILITIES
   ======================================== */
.text-gradient {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
}

.bg-gradient-secondary {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--warning) 100%);
}

.bg-gradient-success {
    background: linear-gradient(135deg, var(--success) 0%, var(--accent) 100%);
}

.shadow-soft {
    box-shadow: var(--shadow-lg);
}

.shadow-hover {
    transition: box-shadow var(--transition-normal);
}

.shadow-hover:hover {
    box-shadow: var(--shadow-2xl);
}

/* ========================================
   BEAUTIFUL RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 768px) {
    .hero-title {
        font-size: var(--text-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--text-lg);
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .product-card {
        margin-bottom: var(--space-6);
    }
    
    .navbar-nav {
        text-align: center;
    }
    
    .navbar .nav-link {
        padding: var(--space-4);
        margin: var(--space-1) 0;
        border-radius: var(--radius-lg);
    }
}

/* ========================================
   BEAUTIFUL LOADING STATES
   ======================================== */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

/* ========================================
   BEAUTIFUL SCROLLBAR
   ======================================== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
}

/* ========================================
   BEAUTIFUL SELECTION
   ======================================== */
::selection {
    background: rgba(102, 126, 234, 0.2);
    color: var(--gray-800);
}

::-moz-selection {
    background: rgba(102, 126, 234, 0.2);
    color: var(--gray-800);
}