/* ==========================================
   AI Review Harvester - Modern 2025 Design
   ========================================== */

/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
    /* Primary Colors - Purple/Blue Gradient Scheme */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --primary-color: #667eea;
    --primary-dark: #5a67d8;
    --primary-light: #9f7aea;
    
    /* Secondary Colors */
    --accent-color: #10b981;
    --accent-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    /* Neutral Colors */
    --white: #ffffff;
    --black: #000000;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Dark Mode Colors */
    --dark-bg-primary: #0f0f23;
    --dark-bg-secondary: #1a1a2e;
    --dark-bg-tertiary: #16213e;
    --dark-text-primary: #e2e8f0;
    --dark-text-secondary: #94a3b8;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: '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;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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, 0.4);
    
    /* Glass Effect */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-backdrop: blur(20px);
    
    /* Animations */
    --transition-fast: 0.15s ease-out;
    --transition-normal: 0.3s ease-out;
    --transition-slow: 0.5s ease-out;
    
    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --white: var(--dark-bg-primary);
    --gray-50: var(--dark-bg-secondary);
    --gray-100: var(--dark-bg-tertiary);
    --gray-200: var(--gray-700);
    --gray-300: var(--gray-600);
    --gray-800: var(--dark-text-secondary);
    --gray-900: var(--dark-text-primary);
    --glass-bg: rgba(0, 0, 0, 0.2);
    --glass-border: rgba(255, 255, 255, 0.1);
}

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

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

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--gray-900);
    background: var(--white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
    color: var(--white);
}

.loading-logo {
    font-size: 4rem;
    margin-bottom: 1rem;
    animation: pulse 2s infinite;
}

.loading-text {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 600;
    margin-bottom: 2rem;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid var(--white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

/* Dark Mode Toggle */
.dark-mode-toggle {
    position: fixed;
    top: 100px;
    right: 2rem;
    z-index: var(--z-fixed);
}

#theme-toggle {
    width: 50px;
    height: 50px;
    border: none;
    border-radius: var(--radius-full);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    border: 1px solid var(--glass-border);
    color: var(--gray-700);
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
    box-shadow: var(--shadow-lg);
}

#theme-toggle:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    background: var(--white);
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    border-bottom: 1px solid var(--glass-border);
    z-index: var(--z-fixed);
    padding: 1rem 0;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: var(--white);
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-icon {
    font-size: 2rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--gray-900);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray-700);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
    background: var(--glass-bg);
}

.nav-link.cta-nav {
    background: var(--primary-gradient);
    color: var(--white);
    font-weight: 600;
}

.nav-link.cta-nav:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
    color: var(--white);
}

.nav-icon {
    font-size: 1rem;
}

/* Compare Badge */
.compare-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--error-color);
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* Mobile Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger .bar {
    width: 25px;
    height: 3px;
    background: var(--gray-700);
    margin: 3px 0;
    transition: var(--transition-fast);
    border-radius: 2px;
}

.hamburger.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active .bar:nth-child(2) {
    opacity: 0;
}

.hamburger.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ===== SEARCH BAR ===== */
.nav-search {
    flex: 1;
    max-width: 400px;
    margin: 0 2rem;
}

.search-form {
    width: 100%;
    position: relative;
}

.search-input-container {
    position: relative;
    width: 100%;
}

.search-input {
    width: 100%;
    padding: 0.75rem 3rem 0.75rem 1.25rem;
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-full);
    font-family: var(--font-primary);
    font-size: var(--text-base);
    color: var(--gray-700);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.search-input::placeholder {
    color: var(--gray-400);
}

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

.search-btn {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: var(--primary-gradient);
    border: none;
    border-radius: var(--radius-full);
    width: 2.25rem;
    height: 2.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.search-btn:hover {
    transform: translateY(-50%) scale(1.05);
    box-shadow: var(--shadow-lg);
}

.search-btn:active {
    transform: translateY(-50%) scale(0.98);
}

.search-results {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    right: 0;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-height: 400px;
    overflow-y: auto;
    z-index: var(--z-dropdown);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
}

.search-results.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.search-result-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border-bottom: 1px solid var(--gray-100);
    cursor: pointer;
    transition: background-color var(--transition-fast);
    text-decoration: none;
    color: inherit;
}

.search-result-item:hover {
    background: var(--gray-50);
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-icon {
    width: 2.5rem;
    height: 2.5rem;
    background: var(--primary-gradient);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    flex-shrink: 0;
}

.search-result-content {
    flex: 1;
}

.search-result-title {
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
    font-size: var(--text-base);
}

.search-result-description {
    font-size: var(--text-sm);
    color: var(--gray-600);
    line-height: 1.4;
}

.search-no-results {
    padding: 2rem;
    text-align: center;
    color: var(--gray-500);
}

.search-no-results i {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--gray-400);
}

/* ===== CATEGORY PAGES ===== */
.breadcrumb-container {
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
    padding: 1rem 0;
    margin-top: 80px; /* Account for fixed navbar */
}

.breadcrumb {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: var(--text-sm);
}

.breadcrumb-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray-600);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.breadcrumb-link:hover {
    color: var(--primary-color);
}

.breadcrumb-current {
    color: var(--gray-900);
    font-weight: 600;
}

.category-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 4rem 0;
}

.category-hero {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.category-icon {
    width: 5rem;
    height: 5rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    font-size: 2rem;
    backdrop-filter: blur(10px);
}

.category-title {
    font-family: var(--font-display);
    font-size: var(--text-5xl);
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: linear-gradient(45deg, var(--white), rgba(255, 255, 255, 0.8));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.category-description {
    font-size: var(--text-xl);
    line-height: 1.6;
    margin-bottom: 3rem;
    opacity: 0.9;
}

.category-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
}

.category-stats .stat-item {
    text-align: center;
}

.category-stats .stat-number {
    display: block;
    font-size: var(--text-3xl);
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.category-stats .stat-label {
    font-size: var(--text-sm);
    opacity: 0.8;
}

.category-filters {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 2rem 0;
}

.filters-container {
    display: flex;
    gap: 2rem;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-group label {
    font-weight: 600;
    color: var(--gray-700);
    font-size: var(--text-sm);
}

.filter-select {
    padding: 0.5rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    background: var(--white);
    font-family: var(--font-primary);
    font-size: var(--text-sm);
    color: var(--gray-700);
    cursor: pointer;
    transition: border-color var(--transition-normal);
    min-width: 150px;
}

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

.category-reviews {
    padding: 4rem 0;
}

.price-info {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    margin: 1rem 0;
}

.price {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--accent-color);
}

.price-note {
    font-size: var(--text-xs);
    color: var(--gray-500);
}

.coming-soon {
    opacity: 0.8;
}

.placeholder-image {
    height: 200px;
    background: linear-gradient(135deg, var(--gray-100), var(--gray-200));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--gray-600);
    font-size: var(--text-lg);
    text-align: center;
}

.placeholder-image i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.6;
}

.coming-soon-info {
    text-align: center;
    margin-top: 1rem;
}

.coming-soon-info p {
    color: var(--gray-600);
    margin-bottom: 1rem;
    font-size: var(--text-sm);
}

.progress-bar {
    height: 6px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

.progress-text {
    font-size: var(--text-xs);
    color: var(--gray-500);
    font-weight: 600;
}

/* Mobile responsiveness for category pages */
@media (max-width: 768px) {
    .category-title {
        font-size: var(--text-3xl);
    }
    
    .category-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .filters-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .filter-group {
        width: 100%;
        justify-content: space-between;
    }
    
    .filter-select {
        min-width: 200px;
    }
    
    .breadcrumb-container {
        margin-top: 70px;
    }
}

/* ===== TYPOGRAPHY ===== */
.section-title {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.section-icon {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

.gradient-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== UTILITY CLASSES ===== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
}

/* ===== BUTTONS ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--primary-gradient);
    color: var(--white);
    padding: 1rem 2rem;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--text-base);
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.btn-primary::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 0.5s;
}

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

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

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--white);
    color: var(--primary-color);
    padding: 1rem 2rem;
    text-decoration: none;
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--text-base);
    cursor: pointer;
    transition: all var(--transition-normal);
}

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

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: transparent;
    color: var(--primary-color);
    padding: 1rem 2rem;
    text-decoration: none;
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--text-base);
    cursor: pointer;
    transition: all var(--transition-normal);
}

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

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0.9;
}

.hero-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.1) 2px, transparent 2px),
        radial-gradient(circle at 75% 75%, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 100px 100px, 50px 50px;
    animation: float 20s ease-in-out infinite;
}

.hero-content {
    text-align: center;
    color: var(--white);
    max-width: 800px;
    padding: 2rem;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin-bottom: 2rem;
    animation: slideDown 1s ease-out 0.5s both;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    animation: slideUp 1s ease-out 0.3s both;
}

.hero-description {
    font-size: var(--text-xl);
    line-height: 1.6;
    margin-bottom: 3rem;
    opacity: 0.9;
    animation: slideUp 1s ease-out 0.7s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 4rem;
    animation: slideUp 1s ease-out 1s both;
}

.trust-indicators {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--text-sm);
    opacity: 0.8;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--white);
    animation: bounce 2s infinite;
}

.scroll-mouse {
    width: 20px;
    height: 32px;
    border: 2px solid var(--white);
    border-radius: 15px;
    margin: 0 auto 0.5rem;
    position: relative;
}

.scroll-wheel {
    width: 2px;
    height: 6px;
    background: var(--white);
    border-radius: 1px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel 2s infinite;
}

/* ===== STATS SECTION ===== */
.stats-section {
    padding: 5rem 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
}

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

.stat-icon {
    font-size: 3rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.stat-number {
    font-family: var(--font-display);
    font-size: var(--text-5xl);
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
    line-height: 1;
}

.stat-label {
    font-size: var(--text-lg);
    color: var(--gray-600);
    font-weight: 500;
}

/* ===== SECTIONS ===== */
.featured,
.categories,
.about,
.newsletter {
    padding: 6rem 0;
}

.featured {
    background: var(--gray-50);
}

.categories {
    background: var(--white);
}

.about {
    background: var(--gray-50);
}

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

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-cta {
    text-align: center;
    margin-top: 3rem;
}

/* ===== REVIEW CARDS ===== */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 2rem;
}

.review-card {
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.review-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-2xl);
}

.card-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: var(--accent-gradient);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-badge.trending {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.review-image {
    position: relative;
    overflow: hidden;
    height: 250px;
}

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

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

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.review-card:hover .image-overlay {
    opacity: 1;
}

.overlay-content {
    color: var(--white);
    text-align: center;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
}

.review-content {
    padding: 2rem;
}

.category-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--primary-color);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 500;
    margin-bottom: 1rem;
}

.review-content h3 {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.review-content p {
    color: var(--gray-600);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.rating {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.stars {
    display: flex;
    gap: 0.25rem;
    color: #fbbf24;
}

.score {
    font-weight: 600;
    color: var(--gray-900);
    font-size: var(--text-lg);
}

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

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray-200);
    gap: 1rem;
}

.compare-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--gray-100);
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
}

.compare-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.compare-btn i {
    font-size: 0.875rem;
}

.review-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-normal);
}

.review-link:hover {
    transform: translateX(5px);
}

.verified-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-color);
    font-size: var(--text-sm);
    font-weight: 500;
}

/* ===== CATEGORY CARDS ===== */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.category-card {
    padding: 2.5rem;
    text-align: center;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0.05;
    transition: left 0.5s ease;
}

.category-card:hover::before {
    left: 0;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.category-icon {
    font-size: 3rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
}

.category-card h3 {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.category-card p {
    color: var(--gray-600);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.category-stats {
    margin-bottom: 2rem;
}

.stat {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--gray-100);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    color: var(--gray-700);
}

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

.category-link:hover {
    transform: translateX(5px);
}

/* ===== ABOUT SECTION ===== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text .section-header {
    text-align: left;
    margin-bottom: 2rem;
}

.about-description {
    font-size: var(--text-lg);
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 3rem;
}

.features-list {
    margin-bottom: 3rem;
}

.feature-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.feature-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    color: var(--white);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
}

.feature-content h4 {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.feature-content p {
    color: var(--gray-600);
    line-height: 1.6;
}

/* AI Visualization */
.about-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-container {
    position: relative;
    width: 400px;
    height: 400px;
}

.ai-visualization {
    width: 100%;
    height: 100%;
    position: relative;
}

.ai-nodes {
    position: relative;
    width: 100%;
    height: 100%;
}

.node {
    position: absolute;
    width: 60px;
    height: 60px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: var(--text-xl);
    box-shadow: var(--shadow-lg);
    animation: float-node 3s ease-in-out infinite;
}

.node-center {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    font-size: var(--text-2xl);
    animation-delay: 0s;
}

.node-1 {
    top: 20%;
    left: 20%;
    animation-delay: -0.5s;
}

.node-2 {
    top: 20%;
    right: 20%;
    animation-delay: -1s;
}

.node-3 {
    bottom: 20%;
    left: 20%;
    animation-delay: -1.5s;
}

.node-4 {
    bottom: 20%;
    right: 20%;
    animation-delay: -2s;
}

.ai-connections {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.connection {
    position: absolute;
    height: 2px;
    background: var(--primary-gradient);
    opacity: 0.6;
    animation: pulse-connection 2s ease-in-out infinite;
}

.connection-1 {
    top: 35%;
    left: 25%;
    width: 25%;
    transform: rotate(45deg);
    animation-delay: 0s;
}

.connection-2 {
    top: 35%;
    right: 25%;
    width: 25%;
    transform: rotate(-45deg);
    animation-delay: -0.5s;
}

.connection-3 {
    bottom: 35%;
    left: 25%;
    width: 25%;
    transform: rotate(-45deg);
    animation-delay: -1s;
}

.connection-4 {
    bottom: 35%;
    right: 25%;
    width: 25%;
    transform: rotate(45deg);
    animation-delay: -1.5s;
}

/* ===== NEWSLETTER SECTION ===== */
.newsletter-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 3rem;
    flex-wrap: wrap;
}

.newsletter-text h3 {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 600;
    margin-bottom: 1rem;
}

.newsletter-form {
    flex: 1;
    max-width: 500px;
}

.input-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.input-group input {
    flex: 1;
    padding: 1rem 1.5rem;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    font-size: var(--text-base);
    backdrop-filter: blur(10px);
}

.input-group input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.input-group input:focus {
    outline: none;
    border-color: var(--white);
    background: rgba(255, 255, 255, 0.2);
}

.newsletter-privacy {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--text-sm);
    opacity: 0.8;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-section p {
    color: var(--gray-400);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    color: var(--gray-400);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all var(--transition-normal);
}

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

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    transition: color var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-links a:hover {
    color: var(--white);
}

.trust-badges {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: var(--gray-800);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
}

.trust-badge i {
    color: var(--accent-color);
}

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: 2rem;
}

.footer-bottom-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-bottom p {
    color: var(--gray-400);
    font-size: var(--text-sm);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.affiliate-notice {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray-500);
    font-size: var(--text-sm);
}

/* ===== BACK TO TOP BUTTON ===== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    z-index: var(--z-fixed);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% { transform: translateY(0) translateX(-50%); }
    40%, 43% { transform: translateY(-10px) translateX(-50%); }
    70% { transform: translateY(-5px) translateX(-50%); }
    90% { transform: translateY(-2px) translateX(-50%); }
}

@keyframes scroll-wheel {
    0% { opacity: 1; top: 6px; }
    100% { opacity: 0; top: 16px; }
}

@keyframes slideUp {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    0% {
        opacity: 0;
        transform: translateY(-30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes float-node {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-5px); }
}

@keyframes pulse-connection {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.8; }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .newsletter-content {
        flex-direction: column;
        text-align: center;
    }
    
    .visual-container {
        width: 300px;
        height: 300px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 80px;
        flex-direction: column;
        background: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-lg);
        padding: 2rem 0;
        border-radius: 0 0 1rem 1rem;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .nav-search {
        display: none;
        order: 3;
        width: 100%;
        max-width: none;
        margin: 1rem 0 0 0;
    }
    
    .nav-search.mobile-active {
        display: block;
    }
    
    .nav-container {
        flex-wrap: wrap;
    }
    
    .hero-title {
        font-size: clamp(2rem, 8vw, 3rem);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .trust-indicators {
        flex-direction: column;
        gap: 1rem;
    }
    
    .reviews-grid {
        grid-template-columns: 1fr;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .card-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }
    
    .trust-badges {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero-content {
        padding: 1rem;
    }
    
    .section-title {
        font-size: var(--text-3xl);
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .reviews-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .review-card {
        margin: 0 0.5rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .stat-number {
        font-size: var(--text-4xl);
    }
    
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }
    
    .dark-mode-toggle {
        right: 1rem;
        top: 90px;
    }
    
    #theme-toggle {
        width: 45px;
        height: 45px;
    }
}