/* CSS Variables */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #64748b;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #0f172a;
    --gray-900: #1e293b;
    --gray-800: #334155;
    --gray-700: #475569;
    --gray-600: #64748b;
    --gray-500: #94a3b8;
    --gray-400: #cbd5e1;
    --gray-300: #e2e8f0;
    --gray-200: #f1f5f9;
    --gray-100: #f8fafc;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --transition: 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;
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--white);
}

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

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--primary-dark);
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    gap: 8px;
}

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

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

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-800);
}

.btn-secondary:hover {
    background: var(--gray-300);
    color: var(--gray-800);
}

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

.btn-success:hover {
    background: #059669;
    color: var(--white);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 700;
    color: var(--dark);
}

.logo:hover {
    color: var(--dark);
}

.logo-icon {
    width: 36px;
    height: 36px;
    color: var(--primary);
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--gray-700);
}

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

.btn-quiz {
    background: var(--primary);
    color: var(--white) !important;
    padding: 10px 20px;
    border-radius: var(--radius);
}

.btn-quiz:hover {
    background: var(--primary-dark);
    color: var(--white) !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-800);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 80px 0 100px;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--white) 100%);
}

.hero-content {
    max-width: 700px;
    margin-bottom: 60px;
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--dark);
    margin-bottom: 20px;
}

.hero p {
    font-size: 20px;
    color: var(--gray-600);
    margin-bottom: 32px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 60px;
}

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

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 14px;
    color: var(--gray-600);
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--dark);
    text-align: center;
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--gray-600);
    text-align: center;
    margin-bottom: 48px;
}

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

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

.category-card {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
}

.category-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.category-card.active {
    border-color: var(--primary);
    background: rgba(37, 99, 235, 0.05);
}

.category-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    color: var(--primary);
}

.category-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.category-card p {
    font-size: 14px;
    color: var(--gray-600);
    margin-bottom: 16px;
}

.category-count {
    display: inline-block;
    padding: 4px 12px;
    background: var(--gray-100);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-600);
}

/* Products Section */
.products {
    background: var(--gray-100);
}

.filter-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
    flex-wrap: wrap;
    gap: 16px;
}

.filter-tabs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 10px 20px;
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-700);
    cursor: pointer;
    transition: all var(--transition);
}

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

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

.view-toggle {
    display: flex;
    gap: 4px;
    background: var(--white);
    padding: 4px;
    border-radius: var(--radius);
    border: 1px solid var(--gray-300);
}

.view-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition);
}

.view-btn svg {
    width: 20px;
    height: 20px;
    color: var(--gray-500);
}

.view-btn:hover svg {
    color: var(--gray-700);
}

.view-btn.active {
    background: var(--primary);
}

.view-btn.active svg {
    color: var(--white);
}

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

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

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

.product-image {
    position: relative;
    aspect-ratio: 4/3;
    background: var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 20px;
}

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

.product-badge.best-seller {
    background: var(--success);
}

.product-badge.budget {
    background: var(--warning);
}

.product-content {
    padding: 20px;
}

.product-category {
    font-size: 12px;
    font-weight: 500;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.product-name {
    font-size: 17px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
    line-height: 1.4;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 12px;
}

.stars {
    display: flex;
    gap: 2px;
}

.star {
    width: 16px;
    height: 16px;
    color: var(--warning);
    fill: var(--warning);
}

.star.empty {
    color: var(--gray-300);
    fill: var(--gray-300);
}

.rating-text {
    font-size: 14px;
    color: var(--gray-600);
}

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

.feature-tag {
    padding: 4px 10px;
    background: var(--gray-100);
    border-radius: 4px;
    font-size: 12px;
    color: var(--gray-700);
}

.product-price {
    font-size: 14px;
    color: var(--gray-600);
    margin-bottom: 16px;
}

.product-price strong {
    font-size: 20px;
    color: var(--dark);
}

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

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

.btn-compare {
    background: var(--white);
    border: 2px solid var(--gray-300);
    color: var(--gray-700);
    padding: 10px;
}

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

.btn-compare.active {
    border-color: var(--primary);
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
}

.btn-compare svg {
    width: 20px;
    height: 20px;
}

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

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

.product-table th,
.product-table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.product-table th {
    background: var(--gray-100);
    font-weight: 600;
    color: var(--gray-700);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.product-table td {
    font-size: 14px;
    color: var(--gray-800);
}

.product-table tr:hover {
    background: var(--gray-50);
}

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

.table-product-img {
    width: 50px;
    height: 50px;
    object-fit: contain;
    background: var(--gray-100);
    border-radius: 6px;
}

.table-product-name {
    font-weight: 600;
    color: var(--dark);
}

.table-rating {
    display: flex;
    align-items: center;
    gap: 4px;
}

.table-stars {
    color: var(--warning);
}

/* Compare Section */
.compare {
    background: var(--white);
}

.compare-slots {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 32px;
}

.compare-slot {
    min-height: 200px;
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    position: relative;
}

.compare-slot:not(.empty) {
    border-style: solid;
    border-color: var(--primary);
    background: rgba(37, 99, 235, 0.03);
}

.compare-slot-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--gray-500);
}

.compare-slot-empty svg {
    width: 40px;
    height: 40px;
}

.compare-slot-content {
    padding: 20px;
    text-align: center;
    width: 100%;
}

.compare-remove {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 28px;
    height: 28px;
    border: none;
    background: var(--gray-200);
    border-radius: 50%;
    font-size: 18px;
    color: var(--gray-600);
    cursor: pointer;
    transition: all var(--transition);
}

.compare-remove:hover {
    background: var(--danger);
    color: var(--white);
}

.compare-img {
    width: 100px;
    height: 100px;
    object-fit: contain;
    margin-bottom: 12px;
}

.compare-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--dark);
}

.compare-table-wrapper {
    margin-top: 32px;
}

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

.compare-table th,
.compare-table td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-200);
    text-align: center;
}

.compare-table th:first-child,
.compare-table td:first-child {
    text-align: left;
    font-weight: 600;
    background: var(--gray-50);
    color: var(--gray-700);
}

.compare-table td {
    font-size: 14px;
}

.compare-actions {
    display: flex;
    justify-content: center;
    margin-top: 24px;
}

/* Quiz Section */
.quiz {
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--dark) 100%);
    color: var(--white);
}

.quiz .section-title {
    color: var(--white);
}

.quiz .section-subtitle {
    color: var(--gray-400);
}

.quiz-container {
    max-width: 700px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 40px;
    color: var(--gray-800);
}

.quiz-progress {
    height: 6px;
    background: var(--gray-200);
    border-radius: 3px;
    margin-bottom: 40px;
    overflow: hidden;
}

.quiz-progress-bar {
    height: 100%;
    background: var(--primary);
    border-radius: 3px;
    transition: width 0.3s ease;
    width: 0%;
}

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

.quiz-question h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 24px;
}

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

.quiz-option {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--gray-100);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
}

.quiz-option:hover {
    border-color: var(--primary);
    background: rgba(37, 99, 235, 0.05);
}

.quiz-option.selected {
    border-color: var(--primary);
    background: rgba(37, 99, 235, 0.1);
}

.quiz-option-radio {
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-400);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.quiz-option.selected .quiz-option-radio {
    border-color: var(--primary);
}

.quiz-option.selected .quiz-option-radio::after {
    content: '';
    width: 10px;
    height: 10px;
    background: var(--primary);
    border-radius: 50%;
}

.quiz-option-text {
    font-size: 15px;
    font-weight: 500;
    color: var(--gray-800);
}

.quiz-navigation {
    display: flex;
    justify-content: space-between;
    gap: 16px;
}

.quiz-navigation .btn {
    min-width: 120px;
}

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

.quiz-result h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
}

.quiz-result-product {
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin-bottom: 24px;
}

.quiz-result-product img {
    width: 150px;
    height: 150px;
    object-fit: contain;
    margin-bottom: 16px;
}

.quiz-result-product h4 {
    font-size: 20px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.quiz-result-product p {
    color: var(--gray-600);
    margin-bottom: 16px;
}

/* SEO Content Section */
.seo-content {
    background: var(--gray-100);
    padding: 80px 0;
}

.seo-content h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--dark);
    text-align: center;
    margin-bottom: 48px;
}

.seo-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.seo-block {
    background: var(--white);
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.seo-block h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 16px;
}

.seo-block p {
    font-size: 15px;
    color: var(--gray-700);
    line-height: 1.7;
}

/* Footer */
.footer {
    background: var(--dark);
    color: var(--gray-400);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand .logo {
    color: var(--white);
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
}

.footer-links h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--gray-400);
    font-size: 14px;
    transition: color var(--transition);
}

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

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--gray-800);
    text-align: center;
    font-size: 14px;
}

.affiliate-disclosure {
    margin-top: 12px;
    font-size: 12px;
    color: var(--gray-500);
}

/* Compare Toast */
.compare-toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--dark);
    color: var(--white);
    padding: 16px 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 16px;
    z-index: 1001;
    animation: slideUp 0.3s ease;
}

.compare-toast.hidden {
    display: none;
}

.compare-toast-message {
    font-size: 14px;
}

.compare-toast-link {
    color: var(--primary-light);
    font-weight: 600;
}

@keyframes slideUp {
    from {
        transform: translateX(-50%) translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateX(-50%) translateY(0);
        opacity: 1;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .compare-slots {
        grid-template-columns: repeat(3, 1fr);
    }

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

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

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        border-bottom: 1px solid var(--gray-200);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

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

    .hero h1 {
        font-size: 32px;
    }

    .hero p {
        font-size: 17px;
    }

    .hero-stats {
        gap: 30px;
    }

    .stat-number {
        font-size: 28px;
    }

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

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

    .filter-bar {
        flex-direction: column;
        align-items: flex-start;
    }

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

    .quiz-container {
        padding: 24px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .section-title {
        font-size: 26px;
    }
}

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

    .hero-cta .btn {
        width: 100%;
    }

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

    .btn-compare {
        width: 100%;
    }
}