/* ================================
   CSS Variables & Reset
   ================================ */
:root {
    --primary: #e07b39;
    --primary-dark: #c96a2d;
    --primary-light: #f4a574;
    --secondary: #4a90a4;
    --secondary-dark: #3a7a8e;
    --dark: #1a1a2e;
    --dark-lighter: #2d3748;
    --gray-900: #1a202c;
    --gray-800: #2d3748;
    --gray-700: #4a5568;
    --gray-600: #718096;
    --gray-500: #a0aec0;
    --gray-400: #cbd5e0;
    --gray-300: #e2e8f0;
    --gray-200: #edf2f7;
    --gray-100: #f7fafc;
    --white: #ffffff;
    --success: #48bb78;
    --warning: #ecc94b;
    --error: #f56565;
    --shadow-sm: 0 1px 2px 0 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);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --transition: all 0.3s ease;
}

*, *::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);
    -webkit-font-smoothing: antialiased;
}

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

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

button {
    cursor: pointer;
    font-family: inherit;
    border: none;
    background: none;
}

/* ================================
   Container & Layout
   ================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 2rem;
    margin-bottom: 1rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 1rem;
}

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

/* ================================
   Buttons
   ================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    box-shadow: 0 4px 14px 0 rgba(224, 123, 57, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(224, 123, 57, 0.5);
}

.btn-secondary {
    background: var(--white);
    color: var(--dark);
    border-color: var(--gray-300);
}

.btn-secondary:hover {
    background: var(--gray-100);
    border-color: var(--gray-400);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-amazon {
    background: #ff9900;
    color: var(--dark);
}

.btn-amazon:hover {
    background: #e88a00;
    transform: translateY(-2px);
}

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

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--dark);
}

.logo-icon {
    width: 40px;
    height: 40px;
    color: var(--primary);
}

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

.nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-weight: 500;
    color: var(--gray-700);
    position: relative;
}

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

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

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

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

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

/* ================================
   Hero Section
   ================================ */
.hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--white) 100%);
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--dark);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 2rem;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--dark);
    margin-bottom: 1.5rem;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    max-width: 500px;
}

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

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

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

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

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.tent-illustration {
    width: 100%;
    max-width: 500px;
    animation: float 6s ease-in-out infinite;
}

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

/* ================================
   Features Bar
   ================================ */
.features-bar {
    background: var(--dark);
    padding: 1.5rem 0;
}

.features-bar .container {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--white);
    font-weight: 500;
}

.feature-icon {
    width: 24px;
    height: 24px;
    color: var(--primary);
}

/* ================================
   Quiz Section
   ================================ */
.quiz-section {
    padding: 5rem 0;
    background: var(--gray-100);
}

.quiz-container {
    max-width: 700px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-lg);
}

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

.progress-bar {
    height: 8px;
    background: var(--gray-200);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.75rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
    width: 20%;
    transition: width 0.5s ease;
}

.progress-text {
    font-size: 0.875rem;
    color: var(--gray-600);
}

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

.quiz-question h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1.5rem;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.quiz-option {
    display: flex;
    align-items: center;
    padding: 1rem 1.25rem;
    background: var(--gray-100);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.quiz-option:hover {
    background: var(--gray-200);
    border-color: var(--gray-300);
}

.quiz-option.selected {
    background: rgba(224, 123, 57, 0.1);
    border-color: var(--primary);
}

.quiz-option input {
    display: none;
}

.quiz-option-marker {
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-400);
    border-radius: 50%;
    margin-right: 1rem;
    position: relative;
    transition: var(--transition);
}

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

.quiz-option.selected .quiz-option-marker::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: var(--white);
    border-radius: 50%;
}

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

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

.quiz-results.hidden {
    display: none;
}

.quiz-results h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1rem;
}

.quiz-results p {
    color: var(--gray-600);
    margin-bottom: 2rem;
}

.recommended-products {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.recommended-product {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    text-align: left;
}

.recommended-product-image {
    width: 80px;
    height: 80px;
    background: var(--gray-200);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.recommended-product-info h4 {
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.25rem;
}

.recommended-product-info p {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 0.5rem;
}

.match-score {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background: var(--success);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
}

/* ================================
   Products Section
   ================================ */
.products-section {
    padding: 5rem 0;
}

.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1rem;
    background: var(--gray-100);
    border-radius: var(--radius-md);
}

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

.filter-group label {
    font-weight: 500;
    color: var(--gray-700);
    font-size: 0.875rem;
}

.filter-select {
    padding: 0.5rem 1rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    background: var(--white);
    font-size: 0.875rem;
    color: var(--gray-800);
    cursor: pointer;
}

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

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

.view-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    color: var(--gray-600);
    transition: var(--transition);
}

.view-btn svg {
    width: 18px;
    height: 18px;
}

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

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

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

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

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

.products-grid.list-view .product-card {
    display: grid;
    grid-template-columns: 250px 1fr;
}

.product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    z-index: 10;
}

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

.badge-new {
    background: var(--secondary);
    color: var(--white);
}

.badge-sale {
    background: var(--error);
    color: var(--white);
}

.product-image {
    position: relative;
    padding-top: 75%;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
    overflow: hidden;
}

.product-image-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-image-placeholder svg {
    width: 60%;
    height: 60%;
    color: var(--gray-400);
}

.products-grid.list-view .product-image {
    padding-top: 0;
    height: 100%;
    min-height: 200px;
}

.product-content {
    padding: 1.5rem;
}

.product-type {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--secondary);
    margin-bottom: 0.5rem;
}

.product-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.stars {
    display: flex;
    gap: 2px;
    color: var(--warning);
}

.stars svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

.rating-count {
    font-size: 0.875rem;
    color: var(--gray-600);
}

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

.spec-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--gray-700);
}

.spec-tag svg {
    width: 12px;
    height: 12px;
}

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

.price-current {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--dark);
}

.price-original {
    font-size: 1rem;
    color: var(--gray-500);
    text-decoration: line-through;
}

.product-actions {
    display: flex;
    gap: 0.75rem;
}

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

.btn-compare {
    padding: 0.75rem;
    background: var(--gray-100);
    color: var(--gray-700);
    border-radius: var(--radius);
}

.btn-compare:hover {
    background: var(--gray-200);
}

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

/* ================================
   Compare Section
   ================================ */
.compare-section {
    padding: 5rem 0;
    background: var(--gray-100);
}

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

.compare-slot {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 1rem;
}

.compare-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 0.875rem;
    color: var(--gray-800);
    background: var(--white);
    cursor: pointer;
}

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

.compare-table-wrapper {
    overflow-x: auto;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

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

.compare-table th,
.compare-table td {
    padding: 1rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.compare-table th {
    background: var(--gray-100);
    font-weight: 600;
    color: var(--dark);
}

.compare-table th:first-child {
    width: 200px;
}

.compare-table tr:last-child td {
    border-bottom: none;
}

.compare-table td:first-child {
    font-weight: 500;
    color: var(--gray-700);
}

.compare-value {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.compare-cross {
    color: var(--error);
}

/* ================================
   Buying Guide Section
   ================================ */
.guide-section {
    padding: 5rem 0;
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.guide-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: var(--transition);
}

.guide-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.guide-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    border-radius: var(--radius-md);
    margin-bottom: 1.25rem;
}

.guide-icon svg {
    width: 24px;
    height: 24px;
    color: var(--white);
}

.guide-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.75rem;
}

.guide-card p {
    font-size: 0.9375rem;
    color: var(--gray-600);
    line-height: 1.7;
}

/* ================================
   SEO Section
   ================================ */
.seo-section {
    padding: 4rem 0;
    background: var(--gray-100);
}

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

.seo-content h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 1.5rem;
}

.seo-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.seo-content p {
    color: var(--gray-700);
    line-height: 1.8;
    margin-bottom: 1rem;
}

/* ================================
   Newsletter Section
   ================================ */
.newsletter-section {
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-lighter) 100%);
}

.newsletter-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.newsletter-content h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 1rem;
}

.newsletter-content p {
    color: var(--gray-400);
    margin-bottom: 2rem;
}

.newsletter-form {
    display: flex;
    gap: 0.75rem;
    max-width: 450px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 0.875rem 1rem;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    font-size: 1rem;
    background: var(--white);
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--primary);
}

/* ================================
   Footer
   ================================ */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 4rem 0 2rem;
}

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

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

.footer-brand p {
    font-size: 0.9375rem;
    line-height: 1.7;
}

.footer-links h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 1.25rem;
}

.footer-links a {
    display: block;
    padding: 0.375rem 0;
    font-size: 0.9375rem;
    color: var(--gray-400);
}

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

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

.footer-bottom p {
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.footer-bottom a {
    color: var(--gray-400);
}

.footer-bottom a:hover {
    color: var(--primary);
}

.affiliate-disclosure {
    font-size: 0.75rem;
    color: var(--gray-600);
    margin-top: 1rem;
}

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

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

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

    .hero-content {
        order: 2;
    }

    .hero-image {
        order: 1;
    }

    .hero-subtitle {
        margin: 0 auto 2rem;
    }

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

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

    .hero h1 {
        font-size: 2.75rem;
    }

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

@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 1rem;
        border-bottom: 1px solid var(--gray-200);
        box-shadow: var(--shadow);
    }

    .nav.active {
        display: flex;
    }

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

    .hero {
        padding: 6rem 0 3rem;
    }

    .hero h1 {
        font-size: 2.25rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

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

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

    .products-grid.list-view .product-card {
        grid-template-columns: 1fr;
    }

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

    .view-toggle {
        margin-left: 0;
        justify-content: center;
    }

    .newsletter-form {
        flex-direction: column;
    }

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

    .quiz-container {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.875rem;
    }

    .hero-cta {
        flex-direction: column;
    }

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

    .features-bar .container {
        flex-direction: column;
        text-align: center;
    }

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