/* CSS Variables */
:root {
    --primary: #10b981;
    --primary-dark: #059669;
    --primary-light: #d1fae5;
    --secondary: #3b82f6;
    --secondary-dark: #2563eb;
    --accent: #f59e0b;
    --danger: #ef4444;
    --dark: #1f2937;
    --gray-900: #111827;
    --gray-800: #1f2937;
    --gray-700: #374151;
    --gray-600: #4b5563;
    --gray-500: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --gray-50: #f9fafb;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
}

/* 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;
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--gray-50);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.3;
    font-weight: 600;
    color: var(--gray-900);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}

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

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

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

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

.btn-secondary {
    background: var(--white);
    color: var(--gray-700);
    border: 2px solid var(--gray-200);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

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

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

.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);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
}

.logo:hover {
    color: var(--gray-900);
}

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

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

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

.nav-links a {
    color: var(--gray-600);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.2s;
}

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

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

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background: var(--gray-600);
    transition: all 0.3s;
}

/* Hero Section */
.hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--white) 50%, #dbeafe 100%);
    min-height: 80vh;
    display: flex;
    align-items: center;
}

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

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--gray-900), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.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 {
    text-align: center;
}

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

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.hero-graphic {
    position: relative;
    width: 400px;
    height: 400px;
    margin: 0 auto;
}

.shield {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 10rem;
    filter: drop-shadow(0 20px 40px rgba(16, 185, 129, 0.3));
    animation: float 3s ease-in-out infinite;
}

.mosquito {
    position: absolute;
    font-size: 2.5rem;
    animation: buzz 2s ease-in-out infinite;
}

.mosquito-1 {
    top: 10%;
    right: 10%;
    animation-delay: 0s;
}

.mosquito-2 {
    bottom: 20%;
    left: 5%;
    animation-delay: 0.5s;
}

.mosquito-3 {
    top: 30%;
    left: 10%;
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% { transform: translate(-50%, -50%) translateY(0); }
    50% { transform: translate(-50%, -50%) translateY(-15px); }
}

@keyframes buzz {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(5px, -5px) rotate(5deg); }
    50% { transform: translate(-5px, 5px) rotate(-5deg); }
    75% { transform: translate(5px, 5px) rotate(3deg); }
}

/* Section Styling */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.25rem;
    margin-bottom: 0.75rem;
}

.section-header p {
    color: var(--gray-500);
    font-size: 1.125rem;
}

/* Products Section */
.products-section {
    padding: 5rem 0;
    background: var(--white);
}

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    align-items: center;
    justify-content: center;
    margin-bottom: 2.5rem;
    padding: 1.5rem;
    background: var(--gray-50);
    border-radius: var(--radius-xl);
}

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

.filter-group label {
    font-weight: 500;
    color: var(--gray-600);
    font-size: 0.875rem;
}

.filter-group select {
    padding: 0.5rem 1rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    background: var(--white);
    font-size: 0.875rem;
    cursor: pointer;
    transition: border-color 0.2s;
}

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

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

.view-btn {
    padding: 0.5rem;
    border: 1px solid var(--gray-300);
    background: var(--white);
    border-radius: var(--radius);
    cursor: pointer;
    color: var(--gray-400);
    transition: all 0.2s;
}

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

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

.product-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    position: relative;
}

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

.product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 1;
}

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

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

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

.product-image {
    height: 180px;
    background: linear-gradient(135deg, var(--gray-100), var(--gray-200));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
}

.product-content {
    padding: 1.5rem;
}

.product-brand {
    font-size: 0.75rem;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.product-name {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--gray-900);
}

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

.product-tag {
    padding: 0.25rem 0.5rem;
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--gray-600);
}

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

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

.rating-count {
    color: var(--gray-500);
    font-size: 0.875rem;
}

.product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-100);
}

.product-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
}

.product-price span {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--gray-500);
}

.add-compare-btn {
    padding: 0.5rem;
    border: 1px solid var(--gray-300);
    background: var(--white);
    border-radius: var(--radius);
    cursor: pointer;
    color: var(--gray-400);
    font-size: 1rem;
    transition: all 0.2s;
}

.add-compare-btn:hover,
.add-compare-btn.active {
    border-color: var(--secondary);
    color: var(--secondary);
    background: #dbeafe;
}

/* Products Table */
.products-table-wrapper {
    overflow-x: auto;
}

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

.products-table th,
.products-table td {
    padding: 1rem 1.25rem;
    text-align: left;
    border-bottom: 1px solid var(--gray-100);
}

.products-table th {
    background: var(--gray-50);
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.875rem;
}

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

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

.table-product-icon {
    width: 40px;
    height: 40px;
    background: var(--gray-100);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

/* Quiz Section */
.quiz-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, #ecfdf5 0%, #f0fdf4 100%);
}

.quiz-container {
    max-width: 700px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-lg);
}

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

.progress-bar {
    height: 8px;
    background: var(--gray-200);
    border-radius: 100px;
    overflow: hidden;
    margin-bottom: 0.75rem;
}

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

.progress-text {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.quiz-question {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.quiz-question h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--gray-900);
}

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

.quiz-option {
    display: flex;
    align-items: center;
    padding: 1rem 1.25rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.2s;
    background: var(--white);
}

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

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

.quiz-option input {
    display: none;
}

.quiz-option-marker {
    width: 24px;
    height: 24px;
    border: 2px solid var(--gray-300);
    border-radius: 50%;
    margin-right: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

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

.quiz-option.selected .quiz-option-marker::after {
    content: '✓';
    color: var(--white);
    font-size: 0.875rem;
    font-weight: bold;
}

.quiz-option-text {
    font-weight: 500;
    color: var(--gray-700);
}

.quiz-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray-100);
}

.quiz-result {
    text-align: center;
    animation: fadeIn 0.3s ease;
}

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

.result-title {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.result-subtitle {
    color: var(--gray-600);
    margin-bottom: 2rem;
}

.result-product {
    background: var(--gray-50);
    border-radius: var(--radius-xl);
    padding: 2rem;
    margin-bottom: 1.5rem;
}

.result-product-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.result-product-reason {
    color: var(--gray-600);
    margin-bottom: 1.5rem;
}

.result-features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.result-feature {
    padding: 0.5rem 1rem;
    background: var(--white);
    border-radius: var(--radius);
    font-size: 0.875rem;
    color: var(--gray-700);
}

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

.compare-selector {
    margin-bottom: 2.5rem;
}

.compare-slots {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.compare-slot {
    position: relative;
}

.compare-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-lg);
    background: var(--gray-50);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
}

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

.compare-select.has-value {
    border-style: solid;
    border-color: var(--primary);
    background: var(--primary-light);
}

.remove-compare {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: none;
    background: var(--danger);
    color: var(--white);
    font-size: 1rem;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
}

.compare-slot.has-value .remove-compare {
    display: flex;
}

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

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

.compare-table th,
.compare-table td {
    padding: 1rem 1.25rem;
    text-align: center;
    border-bottom: 1px solid var(--gray-100);
}

.compare-table th {
    background: var(--gray-50);
    font-weight: 600;
    color: var(--gray-700);
}

.compare-table th:first-child,
.compare-table td:first-child {
    text-align: left;
    background: var(--gray-50);
    font-weight: 500;
}

.compare-product-header {
    padding: 1.5rem 1rem;
    background: linear-gradient(135deg, var(--primary-light), #dbeafe);
}

.compare-product-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.compare-product-name {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--gray-900);
}

.compare-check {
    color: var(--primary);
    font-size: 1.25rem;
}

.compare-cross {
    color: var(--gray-300);
    font-size: 1.25rem;
}

.compare-empty {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--gray-500);
}

.compare-empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Guide Section */
.guide-section {
    padding: 5rem 0;
    background: var(--gray-50);
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.5rem;
}

.guide-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

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

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

.guide-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.guide-card p {
    color: var(--gray-600);
    font-size: 0.95rem;
}

/* SEO Section */
.seo-section {
    padding: 5rem 0;
    background: var(--white);
}

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

.seo-content h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.seo-content h3 {
    font-size: 1.25rem;
    margin: 2rem 0 1rem;
    color: var(--primary-dark);
}

.seo-content p {
    color: var(--gray-600);
    margin-bottom: 1rem;
    line-height: 1.8;
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: 4rem 0 2rem;
}

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

.footer-brand p {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--gray-400);
}

.footer-brand .logo {
    color: var(--white);
}

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

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

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--gray-400);
    font-size: 0.9rem;
    transition: color 0.2s;
}

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

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--gray-800);
    text-align: center;
    font-size: 0.875rem;
}

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

.affiliate-disclosure {
    color: var(--gray-500);
    font-size: 0.8rem;
    max-width: 600px;
    margin: 0.5rem auto 0;
}

/* 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 2rem;
    }

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

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

    .hero-graphic {
        width: 300px;
        height: 300px;
    }

    .shield {
        font-size: 7rem;
    }

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

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 1rem;
        gap: 0;
        border-bottom: 1px solid var(--gray-200);
    }

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

    .nav-links li {
        border-bottom: 1px solid var(--gray-100);
    }

    .nav-links a {
        display: block;
        padding: 1rem;
    }

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

    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero {
        padding: 6rem 0 3rem;
        min-height: auto;
    }

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

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

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

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

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

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

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

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

    .quiz-container {
        padding: 1.5rem;
    }

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

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

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }