/* CSS Variables */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #0f172a;
    --accent: #f59e0b;
    --success: #10b981;
    --background: #f8fafc;
    --surface: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --text-lighter: #94a3b8;
    --border: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --transition: all 0.3s ease;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--background);
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    gap: 8px;
}

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

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

.btn-secondary {
    background: var(--surface);
    color: var(--text);
    border: 2px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-accent {
    background: var(--accent);
    color: white;
}

.btn-accent:hover {
    background: #d97706;
    transform: translateY(-2px);
}

.btn-sm {
    padding: 10px 20px;
    font-size: 0.875rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-icon {
    font-size: 1.8rem;
}

.logo-au {
    color: var(--primary);
}

.nav-list {
    display: flex;
    gap: 32px;
}

.nav-list a {
    font-weight: 500;
    color: var(--text-light);
    transition: var(--transition);
    position: relative;
}

.nav-list a:hover {
    color: var(--primary);
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.nav-list a:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: var(--transition);
}

/* Hero */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 50%, #f0fdf4 100%);
    position: relative;
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    color: var(--secondary);
}

.hero-content .highlight {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-light);
}

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

.floating-cards {
    position: relative;
    width: 100%;
    height: 100%;
}

.float-card {
    position: absolute;
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    animation: float 6s ease-in-out infinite;
}

.card-1 {
    width: 180px;
    height: 180px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.card-2 {
    width: 150px;
    height: 150px;
    top: 40%;
    right: 15%;
    animation-delay: -2s;
}

.card-3 {
    width: 120px;
    height: 120px;
    bottom: 10%;
    left: 30%;
    animation-delay: -4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* Features */
.features {
    padding: 60px 0;
    background: var(--surface);
    margin-top: -40px;
    position: relative;
    z-index: 10;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    text-align: center;
    padding: 32px 24px;
    border-radius: var(--radius);
    background: var(--background);
    transition: var(--transition);
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.125rem;
    margin-bottom: 8px;
    color: var(--secondary);
}

.feature-card p {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 12px;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* Products Section */
.products {
    padding: 80px 0;
    background: var(--background);
}

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 10px 24px;
    border: 2px solid var(--border);
    background: var(--surface);
    border-radius: 50px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.filter-tab:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.filter-tab.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.view-toggle {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-bottom: 24px;
}

.view-btn {
    padding: 10px;
    border: 2px solid var(--border);
    background: var(--surface);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-light);
}

.view-btn:hover,
.view-btn.active {
    border-color: var(--primary);
    color: var(--primary);
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.product-card {
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.product-image {
    height: 200px;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    position: relative;
}

.product-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 12px;
    background: var(--accent);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50px;
}

.product-info {
    padding: 20px;
}

.product-brand {
    font-size: 0.75rem;
    color: var(--text-lighter);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.product-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 8px;
    line-height: 1.3;
}

.product-meta {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
}

.product-type,
.product-size {
    font-size: 0.75rem;
    padding: 4px 10px;
    background: var(--background);
    border-radius: 50px;
    color: var(--text-light);
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

.stars {
    color: var(--accent);
    font-size: 0.875rem;
}

.rating-count {
    font-size: 0.75rem;
    color: var(--text-lighter);
}

.product-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 16px;
}

.product-actions {
    display: flex;
    gap: 8px;
}

.product-actions .btn {
    flex: 1;
}

.btn-compare {
    padding: 10px;
    flex: 0 !important;
}

/* Products Table */
.products-table {
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.products-table.hidden {
    display: none;
}

.products-table table {
    width: 100%;
    border-collapse: collapse;
}

.products-table th,
.products-table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.products-table th {
    background: var(--background);
    font-weight: 600;
    color: var(--secondary);
}

.products-table tr:hover {
    background: var(--background);
}

.products-table .product-table-name {
    display: flex;
    align-items: center;
    gap: 12px;
}

.products-table .product-table-icon {
    width: 50px;
    height: 50px;
    background: var(--background);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

/* Hidden class */
.hidden {
    display: none !important;
}

/* Quiz Section */
.quiz {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--secondary) 0%, #1e3a5f 100%);
    color: white;
}

.quiz .section-header h2,
.quiz .section-header p {
    color: white;
}

.quiz .section-header p {
    opacity: 0.8;
}

.quiz-container {
    max-width: 700px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.quiz-progress {
    margin-bottom: 32px;
}

.progress-bar {
    height: 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    overflow: hidden;
    margin-bottom: 12px;
}

.progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 50px;
    transition: width 0.4s ease;
    width: 20%;
}

.progress-text {
    font-size: 0.875rem;
    opacity: 0.8;
}

.quiz-content h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.quiz-options {
    display: grid;
    gap: 12px;
}

.quiz-option {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.quiz-option:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--accent);
}

.quiz-option.selected {
    background: rgba(245, 158, 11, 0.2);
    border-color: var(--accent);
}

.quiz-option-icon {
    font-size: 1.5rem;
}

.quiz-option-text {
    font-weight: 500;
}

.quiz-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 32px;
}

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

.quiz-results h3 {
    font-size: 2rem;
    margin-bottom: 32px;
}

.quiz-recommendations {
    display: grid;
    gap: 20px;
    margin-bottom: 32px;
}

.quiz-recommendation-card {
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius);
    padding: 24px;
    text-align: left;
    display: flex;
    gap: 20px;
    align-items: center;
}

.quiz-rec-icon {
    font-size: 3rem;
    flex-shrink: 0;
}

.quiz-rec-content h4 {
    font-size: 1.125rem;
    margin-bottom: 4px;
}

.quiz-rec-content p {
    font-size: 0.875rem;
    opacity: 0.8;
    margin-bottom: 12px;
}

.quiz-rec-content .btn {
    padding: 8px 16px;
    font-size: 0.875rem;
}

/* Compare Section */
.compare {
    padding: 80px 0;
    background: var(--surface);
}

.compare-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.compare-slot {
    position: relative;
}

.compare-select {
    width: 100%;
    padding: 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    background: var(--background);
    cursor: pointer;
    appearance: none;
}

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

.clear-slot {
    position: absolute;
    right: 40px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-lighter);
    cursor: pointer;
    opacity: 0;
    transition: var(--transition);
}

.compare-slot:hover .clear-slot {
    opacity: 1;
}

.compare-table-wrapper {
    overflow-x: auto;
}

.compare-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--background);
    border-radius: var(--radius);
    overflow: hidden;
}

.compare-table th,
.compare-table td {
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.compare-table th {
    background: var(--secondary);
    color: white;
    font-weight: 600;
}

.compare-table th:first-child {
    background: var(--text-light);
}

.compare-table tr:nth-child(even) {
    background: var(--surface);
}

.compare-table .feature-name {
    font-weight: 500;
    color: var(--text-light);
}

.compare-table .check {
    color: var(--success);
}

.compare-table .cross {
    color: var(--text-lighter);
}

.compare-product-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.compare-product-icon {
    font-size: 2rem;
}

/* Brands Section */
.brands {
    padding: 80px 0;
    background: var(--background);
}

.brands-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.brand-item {
    background: var(--surface);
    padding: 24px;
    text-align: center;
    border-radius: var(--radius);
    font-weight: 600;
    color: var(--text-light);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.brand-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    color: var(--primary);
}

/* SEO Content Section */
.seo-content {
    padding: 80px 0;
    background: var(--surface);
}

.seo-wrapper h2 {
    font-size: 2rem;
    color: var(--secondary);
    margin-bottom: 40px;
    text-align: center;
}

.seo-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.seo-block h3 {
    font-size: 1.25rem;
    color: var(--secondary);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary);
}

.seo-block p {
    color: var(--text-light);
    margin-bottom: 16px;
    line-height: 1.8;
}

.seo-block p:last-child {
    margin-bottom: 0;
}

/* Footer */
.footer {
    background: var(--secondary);
    color: white;
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    margin-top: 16px;
    opacity: 0.7;
    line-height: 1.7;
}

.footer-links h4 {
    font-size: 1rem;
    margin-bottom: 20px;
    opacity: 0.9;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    opacity: 0.7;
    transition: var(--transition);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--accent);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    opacity: 0.7;
    font-size: 0.875rem;
}

.affiliate-disclosure {
    margin-top: 12px;
    font-size: 0.75rem !important;
    opacity: 0.5 !important;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        margin: 0 auto 32px;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-visual {
        display: none;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .compare-selector {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .seo-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--surface);
        padding: 20px;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-list {
        flex-direction: column;
        gap: 16px;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero {
        padding: 120px 0 60px;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .section-header h2 {
        font-size: 1.75rem;
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .brands-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .quiz-container {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .filter-tabs {
        gap: 8px;
    }

    .filter-tab {
        padding: 8px 16px;
        font-size: 0.875rem;
    }

    .product-actions {
        flex-direction: column;
    }

    .btn-compare {
        flex: 1 !important;
    }
}

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

.product-card {
    animation: fadeIn 0.5s ease forwards;
}

.product-card:nth-child(1) { animation-delay: 0.1s; }
.product-card:nth-child(2) { animation-delay: 0.2s; }
.product-card:nth-child(3) { animation-delay: 0.3s; }
.product-card:nth-child(4) { animation-delay: 0.4s; }
.product-card:nth-child(5) { animation-delay: 0.5s; }
.product-card:nth-child(6) { animation-delay: 0.6s; }

/* Smooth scroll padding for fixed header */
section[id] {
    scroll-margin-top: 80px;
}