/* CSS Variables */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #a5b4fc;
    --secondary: #f59e0b;
    --secondary-dark: #d97706;
    --accent: #10b981;
    --text: #1f2937;
    --text-light: #6b7280;
    --text-lighter: #9ca3af;
    --bg: #ffffff;
    --bg-alt: #f9fafb;
    --bg-card: #ffffff;
    --border: #e5e7eb;
    --shadow: 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);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s 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;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

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

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

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--text);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }

.section-title {
    text-align: center;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 2.5rem;
    font-size: 1.1rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
    color: white;
}

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

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

.btn-amazon {
    background: linear-gradient(135deg, #ff9900 0%, #e88b00 100%);
    color: white;
    font-weight: 600;
}

.btn-amazon:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 153, 0, 0.4);
    color: white;
}

.btn-small {
    padding: 0.5rem 1rem;
    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: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text);
}

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

.logo-icon {
    font-size: 1.75rem;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

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

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

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
    background: none;
    border: none;
    cursor: pointer;
}

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

/* Hero Section */
.hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, #f0f4ff 0%, #fef3e3 100%);
    min-height: 90vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

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

.hero h1 {
    margin-bottom: 1.5rem;
}

.hero .highlight {
    color: var(--primary);
    position: relative;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
}

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

.hero-image {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
}

.floating-cat {
    font-size: 15rem;
    animation: float 3s ease-in-out infinite;
    opacity: 0.9;
}

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

/* Categories */
.categories {
    padding: 4rem 0;
    background: var(--bg);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
}

.category-card {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

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

.category-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

.category-card h3 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

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

/* Products Section */
.products-section {
    padding: 4rem 0;
    background: var(--bg-alt);
}

.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}

.filter-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1rem;
    background: white;
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

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

.view-toggle {
    display: flex;
    gap: 0.5rem;
}

.view-btn {
    padding: 0.5rem;
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-light);
}

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

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.product-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

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

.product-image {
    height: 200px;
    background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    position: relative;
}

.product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.25rem 0.75rem;
    background: var(--primary);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50px;
}

.product-badge.bestseller {
    background: var(--secondary);
}

.product-badge.eco {
    background: var(--accent);
}

.product-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-brand {
    font-size: 0.75rem;
    color: var(--text-lighter);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.product-name {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.product-type {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background: var(--bg-alt);
    color: var(--text-light);
    font-size: 0.75rem;
    border-radius: 4px;
    margin-bottom: 0.75rem;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.feature-tag {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    color: var(--text-light);
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.stars {
    color: #fbbf24;
}

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

.product-footer {
    display: flex;
    gap: 0.5rem;
    margin-top: auto;
}

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

.btn-compare {
    background: var(--bg-alt);
    color: var(--text);
    border: 1px solid var(--border);
    padding: 0.5rem;
}

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

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

/* Product Table */
.product-table-wrapper {
    overflow-x: auto;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

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

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

.product-table th {
    background: var(--bg-alt);
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-light);
    white-space: nowrap;
}

.product-table tr:hover {
    background: var(--bg-alt);
}

.product-table .product-name-cell {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

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

.product-table .check {
    color: var(--accent);
}

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

/* Compare Section */
.compare-section {
    padding: 4rem 0;
    background: var(--bg);
}

.compare-slots {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.compare-slot {
    background: var(--bg-card);
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

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

.compare-slot-empty {
    text-align: center;
    color: var(--text-light);
}

.plus-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: var(--bg-alt);
    border-radius: 50%;
    font-size: 2rem;
    margin: 0 auto 1rem;
    color: var(--text-lighter);
}

.compare-slot-filled {
    width: 100%;
    height: 100%;
    padding: 1.5rem;
    text-align: center;
}

.remove-compare {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: none;
    background: var(--text-lighter);
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    transition: var(--transition);
}

.remove-compare:hover {
    background: #ef4444;
}

.compare-product-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.compare-product-info .icon {
    font-size: 4rem;
}

.compare-product-info .name {
    font-weight: 600;
    font-size: 1rem;
}

.compare-product-info .brand {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* Compare Modal */
.compare-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 1rem;
}

.compare-modal-content {
    background: white;
    border-radius: var(--radius-lg);
    padding: 2rem;
    max-width: 600px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: var(--bg-alt);
    font-size: 1.25rem;
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--text-lighter);
    color: white;
}

.compare-product-list {
    display: grid;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.compare-product-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-alt);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.compare-product-item:hover {
    background: var(--primary-light);
}

.compare-product-item .icon {
    font-size: 2.5rem;
}

.compare-product-item .info {
    flex: 1;
}

.compare-product-item .info h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.compare-product-item .info p {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* Comparison Result */
.comparison-result {
    margin-top: 2rem;
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.comparison-result h3 {
    padding: 1.5rem;
    background: var(--bg-alt);
    margin: 0;
}

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

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

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

.comparison-table th:first-child {
    background: var(--bg-alt);
    color: var(--text);
    text-align: left;
}

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

.comparison-table .check {
    color: var(--accent);
    font-size: 1.25rem;
}

.comparison-table .cross {
    color: var(--text-lighter);
    font-size: 1.25rem;
}

.comparison-table .best {
    background: #ecfdf5;
    font-weight: 600;
    color: var(--accent);
}

/* Quiz Section */
.quiz-section {
    padding: 4rem 0;
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
}

.quiz-container {
    background: white;
    border-radius: var(--radius-lg);
    padding: 3rem;
    max-width: 700px;
    margin: 0 auto;
    box-shadow: var(--shadow-xl);
}

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

.quiz-header h2 {
    margin-bottom: 0.5rem;
}

.quiz-header p {
    color: var(--text-light);
}

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

.progress-bar {
    height: 8px;
    background: var(--bg-alt);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 20%;
}

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

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

.quiz-question h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.quiz-options {
    display: grid;
    gap: 0.75rem;
}

.quiz-option {
    padding: 1rem 1.25rem;
    background: var(--bg-alt);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
    font-size: 1rem;
}

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

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

.quiz-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 2rem;
}

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

.result-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

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

.result-products {
    display: grid;
    gap: 1rem;
    margin-bottom: 2rem;
}

.result-product {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-alt);
    border-radius: var(--radius);
    text-align: left;
}

.result-product .icon {
    font-size: 3rem;
}

.result-product .info {
    flex: 1;
}

.result-product .info h4 {
    margin-bottom: 0.25rem;
}

.result-product .info p {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.result-product .match-score {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent);
}

/* Guide Section */
.guide-section {
    padding: 4rem 0;
    background: var(--bg-alt);
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.guide-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.guide-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.guide-card h3 {
    margin-bottom: 0.75rem;
}

.guide-card p {
    color: var(--text-light);
    margin-bottom: 1rem;
    font-size: 0.9375rem;
}

.guide-card ul {
    list-style: none;
}

.guide-card li {
    padding: 0.25rem 0;
    padding-left: 1.5rem;
    position: relative;
    font-size: 0.9375rem;
    color: var(--text-light);
}

.guide-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}

/* SEO Content Section */
.seo-content {
    padding: 4rem 0;
    background: var(--bg);
}

.seo-content h2 {
    margin-bottom: 1.5rem;
}

.seo-text {
    max-width: 900px;
    margin: 0 auto;
}

.seo-text p {
    margin-bottom: 1.25rem;
    color: var(--text-light);
    line-height: 1.8;
}

.seo-text h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.seo-text ul {
    margin-bottom: 1.25rem;
    padding-left: 1.5rem;
}

.seo-text li {
    margin-bottom: 0.5rem;
    color: var(--text-light);
    line-height: 1.7;
}

.seo-text strong {
    color: var(--text);
}

/* Footer */
.footer {
    background: var(--text);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-brand .logo {
    color: white;
    margin-bottom: 1rem;
}

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

.footer-brand p {
    color: var(--text-lighter);
    font-size: 0.9375rem;
}

.footer-links h4,
.footer-info h4 {
    color: white;
    margin-bottom: 1rem;
    font-size: 1rem;
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--text-lighter);
    font-size: 0.9375rem;
    transition: var(--transition);
}

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

.footer-info p {
    color: var(--text-lighter);
    font-size: 0.875rem;
    line-height: 1.7;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

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

.footer-bottom a {
    color: var(--text-lighter);
}

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

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

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-image {
        display: none;
    }

    .hero-content {
        max-width: 100%;
        text-align: center;
    }

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

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

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 1rem;
        gap: 0;
        box-shadow: var(--shadow);
    }

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

    .nav-links li {
        padding: 0.75rem 0;
        border-bottom: 1px solid var(--border);
    }

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

    .hero {
        padding: 7rem 0 3rem;
        min-height: auto;
    }

    .hero-stats {
        gap: 1.5rem;
    }

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

    .quiz-container {
        padding: 1.5rem;
    }

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

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

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

    .controls {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-group {
        justify-content: center;
    }

    .view-toggle {
        justify-content: center;
    }

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

/* 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: 0.15s; }
.product-card:nth-child(3) { animation-delay: 0.2s; }
.product-card:nth-child(4) { animation-delay: 0.25s; }
.product-card:nth-child(5) { animation-delay: 0.3s; }
.product-card:nth-child(6) { animation-delay: 0.35s; }