/* ===== MODERN DESIGN SYSTEM ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

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

:root {
    /* Modern Color Palette */
    --primary-color: #667eea;
    --primary-dark: #5a67d8;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --gradient-card: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
    
    /* Text Colors */
    --text-dark: #2d3748;
    --text-light: #718096;
    --text-muted: #a0aec0;
    
    /* Background Colors */
    --bg-light: #f7fafc;
    --bg-white: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.25);
    --bg-overlay: rgba(0, 0, 0, 0.4);
    
    /* Border & Effects */
    --border-color: #e2e8f0;
    --border-radius: 12px;
    --border-radius-lg: 20px;
    --border-radius-xl: 24px;
    
    /* Status Colors */
    --success: #48bb78;
    --error: #f56565;
    --warning: #ed8936;
    --info: #4299e1;
    
    /* 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-glow: 0 0 20px rgba(102, 126, 234, 0.3);
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
    --transition-slow: all 0.5s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.7;
    color: var(--text-dark);
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== ENHANCED NAVIGATION ===== */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h2 {
    font-size: 1.75rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.cart-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--gradient-primary);
    color: white !important;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
}

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

.cart-count {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.25rem 0.5rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
}

/* ===== HERO SECTIONS ===== */
.hero {
    background: var(--gradient-hero);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::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 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="white" opacity="0.1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grain)"/></svg>');
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: white;
}

.highlight {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1rem;
    font-weight: 500;
}

.description {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.profile-card {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.profile-img-wrapper {
    position: relative;
    width: 300px;
    height: 300px;
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow-2xl);
}

.profile-ring {
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ===== ENHANCED BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.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: var(--transition);
}

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

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

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

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

/* ===== SECTIONS ===== */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    text-align: center;
    margin-bottom: 3rem;
}

/* ===== ENHANCED CARDS ===== */
.project-card, .skill-card {
    background: var(--gradient-card);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(255, 255, 255, 0.5);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

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

.project-icon, .skill-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0;
}

.project-tags span {
    background: var(--gradient-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 500;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    margin-top: 1rem;
    transition: var(--transition);
}

.project-link:hover {
    gap: 1rem;
}

/* ===== PRODUCTS PAGE ENHANCEMENTS ===== */
.products-hero-enhanced {
    background: var(--gradient-hero);
    padding: 4rem 0;
    position: relative;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.1);
}

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

.hero-title-large {
    font-size: 3rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
}

.hero-subtitle-large {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
}

.search-container {
    position: relative;
    max-width: 500px;
    margin: 2rem auto;
}

.search-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: none;
    border-radius: var(--border-radius-lg);
    font-size: 1rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-lg);
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
}

.quick-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
    color: white;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* ===== FILTER CONTROLS ===== */
.products-filter-enhanced {
    padding: 2rem 0;
    background: white;
    box-shadow: var(--shadow-sm);
}

.filter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.filter-controls-enhanced {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.filter-btn-enhanced {
    padding: 1rem 2rem;
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.filter-btn-enhanced.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-md);
}

.filter-actions {
    display: flex;
    gap: 2rem;
    align-items: center;
    flex-wrap: wrap;
}

.products-search-bar {
    position: relative;
    flex: 1;
    min-width: 250px;
}

.search-input-filter {
    width: 100%;
    padding: 0.75rem 0.75rem 0.75rem 2.5rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    transition: var(--transition);
}

.search-input-filter:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.search-icon-filter {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
}

.sort-dropdown {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sort-select {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: white;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
}

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


.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

/* ===== PRODUCT GRID ===== */
.products-section-enhanced {
    padding: 2rem 0 4rem;
}

.products-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.product-card {
    background: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid var(--border-color);
    position: relative;
}

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

.product-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.product-info {
    padding: 1.5rem;
}

.product-category {
    color: var(--primary-color);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.product-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.product-description {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.product-price-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

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

.product-discount {
    background: var(--gradient-secondary);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.product-original-price {
    text-decoration: line-through;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-right: 0.5rem;
}

.badge-featured {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    background: var(--gradient-secondary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 10;
}

.product-stock {
    margin-top: 0.75rem;
}

.stock-indicator {
    font-size: 0.85rem;
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    display: inline-block;
}

.stock-indicator.in-stock {
    background: rgba(72, 187, 120, 0.1);
    color: var(--success);
}

.stock-indicator.low-stock {
    background: rgba(237, 137, 54, 0.1);
    color: var(--warning);
}

.stock-indicator.out-of-stock {
    background: rgba(245, 101, 101, 0.1);
    color: var(--error);
}

.stock-info.out-of-stock {
    color: var(--error);
}

.original-price {
    text-decoration: line-through;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-right: 0.5rem;
}

.discount-badge {
    background: var(--gradient-secondary);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: 0.5rem;
}

/* ===== LOADING STATES ===== */
.loading, .loading-enhanced {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    color: var(--text-light);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .nav-menu {
        display: none;
    }
    
    .container {
        padding: 0 16px;
    }
    
    .filter-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .quick-stats {
        gap: 1.5rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ===== 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);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

.fade-in-left {
    animation: fadeInLeft 0.6s ease forwards;
}

/* ===== SCROLL INDICATOR ===== */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
}

.scroll-indicator span {
    width: 2px;
    height: 20px;
    background: rgba(255, 255, 255, 0.6);
    animation: scroll 2s ease-in-out infinite;
}

.scroll-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.scroll-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes scroll {
    0%, 100% {
        opacity: 0.3;
        transform: scaleY(0.5);
    }
    50% {
        opacity: 1;
        transform: scaleY(1);
    }
}

/* ===== AUTH PAGES (LOGIN) ===== */
.auth-page {
    background: var(--gradient-hero);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.back-btn {
    position: absolute;
    top: 2rem;
    left: 2rem;
    color: white;
    text-decoration: none;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(-5px);
}

.auth-container {
    position: relative;
    z-index: 2;
}

.auth-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius-xl);
    padding: 3rem;
    box-shadow: var(--shadow-2xl);
    border: 1px solid rgba(255, 255, 255, 0.3);
    max-width: 450px;
    width: 100%;
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: var(--text-dark);
}

.form-group input {
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    background: white;
}

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

.password-wrapper {
    position: relative;
}

.toggle-password {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.forgot-password {
    color: var(--primary-color);
    text-decoration: none;
}

.forgot-password:hover {
    text-decoration: underline;
}

.btn-block {
    width: 100%;
}

.divider {
    text-align: center;
    margin: 1.5rem 0;
    position: relative;
    color: var(--text-light);
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border-color);
}

.divider span {
    background: white;
    padding: 0 1rem;
    position: relative;
    z-index: 1;
}

.btn-google {
    background: white;
    color: var(--text-dark);
    border: 2px solid var(--border-color);
    justify-content: center;
}

.btn-google:hover {
    background: var(--bg-light);
    transform: translateY(-2px);
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--text-light);
}

.signup-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.signup-link:hover {
    text-decoration: underline;
}

.error-msg {
    color: var(--error);
    font-size: 0.85rem;
    opacity: 0;
    transition: var(--transition);
}

.error-msg.show {
    opacity: 1;
}

/* ===== QUIZ PAGE ===== */
.quiz-page {
    background: var(--bg-light);
}

.quiz-header {
    background: white;
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
}

.quiz-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.quiz-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
}

.timer {
    background: var(--gradient-primary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    font-weight: 600;
}

.quiz-container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.quiz-welcome, .quiz-results {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 3rem;
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.welcome-card h2, .results-card h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.quiz-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin: 2rem 0;
}

.info-item {
    background: var(--bg-light);
    padding: 1rem;
    border-radius: var(--border-radius);
}

.quiz-content {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
}

.progress-bar {
    background: var(--bg-light);
    height: 8px;
    border-radius: 4px;
    margin-bottom: 2rem;
    overflow: hidden;
}

.progress-fill {
    background: var(--gradient-primary);
    height: 100%;
    border-radius: 4px;
    transition: var(--transition-slow);
}

.question-counter {
    text-align: center;
    margin-bottom: 2rem;
    font-weight: 600;
    color: var(--text-light);
}

.question-card {
    margin-bottom: 2rem;
}

.question-text {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--text-dark);
}

.options-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.option-btn {
    padding: 1rem 1.5rem;
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

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

.option-btn.selected {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
}

.quiz-navigation {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

.score-display {
    margin: 2rem 0;
}

.score-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    box-shadow: var(--shadow-lg);
}

.score-percentage {
    font-size: 2rem;
    font-weight: 700;
    color: white;
}

.results-breakdown {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    margin: 2rem 0;
}

.breakdown-item {
    background: var(--bg-light);
    padding: 1rem;
    border-radius: var(--border-radius);
    text-align: center;
}

.breakdown-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.breakdown-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
}

.results-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== APP DEMO PAGE ===== */
.app-demo-hero {
    background: var(--gradient-hero);
    padding: 4rem 0;
    text-align: center;
    color: white;
}

.app-demo-hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.app-overview {
    padding: 4rem 0;
    background: white;
}

.overview-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.feature-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.feature-text h4 {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.phone-mockup {
    display: flex;
    justify-content: center;
}

.phone-frame {
    width: 300px;
    height: 600px;
    background: var(--gradient-primary);
    border-radius: 30px;
    padding: 20px;
    box-shadow: var(--shadow-2xl);
    position: relative;
    overflow: hidden;
}

.phone-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 20px;
}

.video-walkthrough {
    padding: 4rem 0;
    background: var(--bg-light);
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.video-card {
    background: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.video-wrapper {
    position: relative;
}

.video-wrapper video {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.video-info {
    padding: 1.5rem;
}

.video-info h3 {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.project-link-section {
    padding: 4rem 0;
    background: white;
}

.project-link-card {
    background: var(--gradient-card);
    border-radius: var(--border-radius-lg);
    padding: 3rem;
    text-align: center;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.link-container {
    display: flex;
    gap: 1rem;
    margin: 2rem 0;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.link-container input {
    flex: 1;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: white;
}

.screenshots-section {
    padding: 4rem 0;
    background: var(--bg-light);
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

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

.screenshot-item img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    cursor: pointer;
}

.screenshot-item img:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-xl);
}

.screenshot-item p {
    margin-top: 1rem;
    font-weight: 600;
    color: var(--text-dark);
}

.cta-section {
    padding: 4rem 0;
    background: var(--gradient-hero);
    text-align: center;
    color: white;
}

.cta-section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

/* ===== FLOATING ELEMENTS ===== */
.floating-cart-btn-enhanced {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    box-shadow: var(--shadow-xl);
    transition: var(--transition);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.floating-cart-btn-enhanced:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-2xl);
}

.cart-badge-enhanced {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--error);
    color: white;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}

/* ===== ENHANCED MODAL ===== */
.modal-enhanced {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
}

.modal-enhanced.show {
    display: flex;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
}

.modal-content-enhanced {
    position: relative;
    background: white;
    border-radius: var(--border-radius-xl);
    max-width: 900px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-2xl);
    z-index: 2001;
}

.close-modal-enhanced {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(0, 0, 0, 0.1);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    z-index: 2002;
}

.close-modal-enhanced:hover {
    background: rgba(0, 0, 0, 0.2);
}

.modal-body-enhanced {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    padding: 2rem;
}

.modal-image-section {
    position: relative;
}

.modal-image-large {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--border-radius);
}

.modal-details-section {
    padding: 1rem 0;
}

.modal-category-badge {
    display: inline-block;
    background: var(--gradient-primary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.modal-title-large {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.modal-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.stars {
    color: #fbbf24;
    font-size: 1.2rem;
}

.rating-text {
    color: var(--text-light);
    font-size: 0.9rem;
}

.modal-price-section {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.modal-price-large {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.modal-description-enhanced {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 2rem;
}

.product-features {
    margin-bottom: 2rem;
}

.product-features h4 {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.features-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.features-list span {
    background: var(--bg-light);
    color: var(--text-dark);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
}

.stock-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    padding: 0.75rem 1rem;
    background: rgba(72, 187, 120, 0.1);
    color: var(--success);
    border-radius: var(--border-radius);
    font-weight: 600;
}

.stock-info.out-of-stock {
    background: rgba(245, 101, 101, 0.1);
    color: var(--error);
}

.modal-actions-enhanced {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.quantity-selector-enhanced {
    display: flex;
    align-items: center;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.qty-btn-enhanced {
    background: var(--bg-light);
    border: none;
    padding: 0.75rem 1rem;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-dark);
}

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

.quantity-selector-enhanced input {
    border: none;
    padding: 0.75rem;
    text-align: center;
    width: 60px;
    font-weight: 600;
    background: white;
}

.btn-add-cart-enhanced {
    flex: 1;
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

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

/* ===== CART BACKDROP ===== */
.cart-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1400;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.cart-backdrop.show {
    opacity: 1;
    visibility: visible;
}

/* ===== ENHANCED CART SIDEBAR ===== */
.cart-sidebar-enhanced {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100vh;
    background: white;
    box-shadow: var(--shadow-2xl);
    z-index: 1500;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.cart-sidebar-enhanced.open {
    right: 0;
}

.cart-header-enhanced {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-light);
}

.cart-header-enhanced h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.close-cart-enhanced {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition);
}

.close-cart-enhanced:hover {
    background: var(--border-color);
}

.cart-items-enhanced {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
}

.empty-cart-enhanced {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-light);
}

.empty-cart-enhanced svg {
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-cart-enhanced p {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.empty-cart-enhanced small {
    font-size: 0.9rem;
}

.cart-item {
    display: flex;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.cart-item-image {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: var(--border-radius);
}

.cart-item-details {
    flex: 1;
}

.cart-item-name {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.25rem;
}

.cart-item-price {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.cart-item-qty {
    color: var(--text-light);
    font-size: 0.9rem;
}

.cart-footer-enhanced {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
    background: var(--bg-light);
}

.cart-summary {
    margin-bottom: 1.5rem;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.summary-row.total-row {
    padding-top: 0.5rem;
    border-top: 1px solid var(--border-color);
    font-weight: 700;
    font-size: 1.1rem;
}

.free-shipping {
    color: var(--success);
    font-weight: 600;
}

.total-price-large {
    color: var(--primary-color);
    font-size: 1.25rem;
}

.btn-checkout-enhanced {
    width: 100%;
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

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

.continue-shopping {
    display: block;
    text-align: center;
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.continue-shopping:hover {
    color: var(--primary-color);
}

/* ===== VIEW TOGGLE BUTTONS ===== */
.view-options {
    display: flex;
    gap: 0.5rem;
}

.view-btn {
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 0.75rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.view-btn.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
}

/* ===== RESPONSIVE MODAL ===== */
@media (max-width: 768px) {
    .modal-body-enhanced {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 1rem;
    }
    
    .modal-content-enhanced {
        width: 95%;
        max-height: 95vh;
    }
    
    .modal-title-large {
        font-size: 1.5rem;
    }
    
    .modal-price-large {
        font-size: 1.5rem;
    }
    
    .cart-sidebar-enhanced {
        width: 100%;
        right: -100%;
    }
    
    .modal-actions-enhanced {
        flex-direction: column;
        gap: 1rem;
    }
    
    .btn-add-cart-enhanced {
        width: 100%;
    }
}

/* ===== FOOTER ===== */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.footer p {
    margin-bottom: 0.5rem;
    opacity: 0.8;
}