/* CSS Variables */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #10b981;
    --secondary-dark: #059669;
    --accent: #f59e0b;
    --background: #f8fafc;
    --surface: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --text-lighter: #94a3b8;
    --border: #e2e8f0;
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --transition: all 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

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

.hidden {
    display: none !important;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.5rem); }

.section-title {
    text-align: center;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 2rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    gap: 8px;
}

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

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

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

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

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

.btn-success:hover {
    background: var(--secondary-dark);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.125rem;
}

/* Header */
.header {
    background: var(--surface);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--text);
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

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

/* Hero */
.hero {
    background: linear-gradient(135deg, #dbeafe 0%, #e0e7ff 100%);
    padding: 60px 0 80px;
}

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

.hero-content h1 {
    margin-bottom: 1rem;
    color: var(--text);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 3rem;
}

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

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
}

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

.hero-image {
    background: var(--surface);
    border-radius: var(--radius-lg);
    height: 350px;
    display: flex;
    align-items: flex-start;
    justify-content: flex-end;
    padding: 20px;
    box-shadow: var(--shadow-lg);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 300'%3E%3Crect fill='%23f1f5f9' width='400' height='300'/%3E%3Ctext x='50%25' y='50%25' dominant-baseline='middle' text-anchor='middle' font-family='system-ui' font-size='80'%3E%F0%9F%91%9F%3C/text%3E%3C/svg%3E");
    background-size: cover;
    background-position: center;
}

.hero-badge {
    background: var(--accent);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.875rem;
}

/* Categories */
.categories {
    padding: 60px 0;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
    margin-top: 2rem;
}

.category-card {
    background: var(--surface);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 16px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.category-card:hover, .category-card.active {
    border-color: var(--primary);
    background: #eff6ff;
}

.category-icon {
    font-size: 2rem;
}

.category-name {
    font-size: 0.875rem;
    font-weight: 500;
    text-align: center;
}

/* Products */
.products {
    padding: 60px 0;
    background: var(--surface);
}

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

.view-toggle {
    display: flex;
    gap: 8px;
}

.view-btn {
    padding: 10px;
    background: var(--background);
    border: 2px solid var(--border);
    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);
    background: #eff6ff;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.product-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

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

.product-image {
    height: 200px;
    background: var(--background);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    position: relative;
}

.product-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--accent);
    color: white;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.product-info {
    padding: 20px;
}

.product-category {
    font-size: 0.75rem;
    color: var(--primary);
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: 4px;
}

.product-name {
    font-size: 1.125rem;
    margin-bottom: 8px;
}

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

.stars {
    color: var(--accent);
}

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

.product-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 12px;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.feature-tag {
    background: var(--background);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--text-light);
}

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

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

/* Table View */
.product-table-wrapper {
    overflow-x: auto;
}

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

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

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

.product-table tr:hover {
    background: #fafafa;
}

.product-table .stars {
    font-size: 0.875rem;
}

/* Quiz Section */
.quiz-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #dbeafe 0%, #e0e7ff 100%);
}

.quiz-container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.quiz-intro h2 {
    margin-bottom: 1rem;
}

.quiz-intro p {
    color: var(--text-light);
    margin-bottom: 2rem;
}

.quiz-progress {
    margin-bottom: 2rem;
}

.progress-bar {
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-fill {
    height: 100%;
    background: var(--primary);
    transition: width 0.3s ease;
}

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

.quiz-question h3 {
    margin-bottom: 1.5rem;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.quiz-option {
    padding: 16px 20px;
    background: var(--background);
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
    font-size: 1rem;
}

.quiz-option:hover {
    border-color: var(--primary);
    background: #eff6ff;
}

.quiz-result h3 {
    color: var(--secondary);
    margin-bottom: 1.5rem;
}

.result-product {
    background: var(--background);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 1.5rem;
}

.result-product .product-name {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.result-product p {
    color: var(--text-light);
    margin-bottom: 16px;
}

/* Compare Section */
.compare-section {
    padding: 60px 0;
    background: var(--surface);
}

.compare-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 2rem;
}

.compare-select {
    width: 100%;
    padding: 12px 16px;
    font-size: 1rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    cursor: pointer;
    transition: var(--transition);
}

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

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

.compare-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
}

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

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

.compare-table .feature-col {
    text-align: left;
    width: 150px;
    background: var(--background);
    font-weight: 500;
}

.compare-table td:first-child {
    text-align: left;
    font-weight: 500;
    background: var(--background);
}

.compare-table .action-row td {
    padding: 20px;
}

/* About Section */
.about-section {
    padding: 80px 0;
    background: var(--background);
}

.about-content h2 {
    text-align: center;
    margin-bottom: 3rem;
}

.about-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--text);
}

.about-text h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text);
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.about-features .feature-card {
    background: var(--surface);
    padding: 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.about-features .feature-icon {
    font-size: 2rem;
    margin-bottom: 12px;
    display: block;
}

.about-features h4 {
    margin-bottom: 8px;
}

.about-features p {
    color: var(--text-light);
    font-size: 0.875rem;
    margin: 0;
}

/* Footer */
.footer {
    background: var(--text);
    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 {
    color: var(--text-lighter);
    margin-top: 1rem;
}

.footer-brand .logo {
    color: white;
}

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

.footer-links h4 {
    margin-bottom: 1rem;
    font-size: 1rem;
}

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

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: var(--text-lighter);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 30px;
    text-align: center;
}

.footer-bottom p {
    color: var(--text-lighter);
    font-size: 0.875rem;
    margin-bottom: 8px;
}

.affiliate-disclosure {
    font-size: 0.75rem !important;
    max-width: 600px;
    margin: 0 auto;
}

/* Responsive */
@media (max-width: 1024px) {
    .category-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--surface);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        box-shadow: var(--shadow-md);
    }

    .nav-links.active {
        display: flex;
    }

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

    .hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

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

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

    .hero-image {
        height: 250px;
        order: -1;
    }

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

    .products-header {
        flex-direction: column;
        gap: 16px;
    }

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

    .quiz-container {
        padding: 24px;
    }

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

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }

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

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