/* CSS Variables */
:root {
    --primary: #00D9FF;
    --primary-dark: #00B8D9;
    --secondary: #6C63FF;
    --accent: #FF6B6B;
    --dark: #1a1a2e;
    --dark-light: #16213e;
    --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: #ed8936;
    --danger: #f56565;
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    --radius-sm: 4px;
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --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;
    background-color: var(--gray-100);
    color: var(--gray-800);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

a {
    text-decoration: none;
    color: inherit;
}

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

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 0;
    transition: var(--transition);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    font-size: 28px;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
}

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

.nav {
    display: flex;
    gap: 30px;
}

.nav-link {
    color: var(--gray-300);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

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

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

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--white);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-light) 100%);
    padding: 140px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-title .highlight {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--gray-400);
    margin-bottom: 30px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 50px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 217, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--gray-600);
}

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

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

.btn-accent:hover {
    background: #ff5252;
    transform: translateY(-2px);
}

/* Hero Stats */
.hero-stats {
    display: flex;
    gap: 40px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

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

/* Hero Image */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.bike-illustration {
    width: 100%;
    max-width: 400px;
}

.bike-illustration svg {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0, 217, 255, 0.2));
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* Products Section */
.products {
    padding: 100px 0;
    background: var(--white);
}

.filter-bar {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 20px;
    border-radius: 50px;
    font-weight: 500;
    color: var(--gray-600);
    background: var(--gray-100);
    transition: var(--transition);
}

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

.view-toggle {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-bottom: 20px;
}

.view-btn {
    padding: 10px;
    border-radius: var(--radius);
    color: var(--gray-500);
    transition: var(--transition);
}

.view-btn:hover,
.view-btn.active {
    background: var(--gray-200);
    color: var(--dark);
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}

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

.product-image {
    position: relative;
    height: 200px;
    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: 10px;
    left: 10px;
    padding: 5px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

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

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

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

.product-compare-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--white);
    color: var(--gray-600);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.product-compare-btn:hover,
.product-compare-btn.active {
    background: var(--primary);
    color: var(--dark);
}

.product-content {
    padding: 20px;
}

.product-type {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.product-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 10px;
    line-height: 1.4;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

.product-feature {
    font-size: 0.75rem;
    padding: 4px 10px;
    background: var(--gray-100);
    color: var(--gray-700);
    border-radius: 50px;
}

.product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 15px;
    border-top: 1px solid var(--gray-200);
}

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

.product-rating {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--warning);
}

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

.product-cta {
    width: 100%;
    margin-top: 15px;
    padding: 12px;
    background: var(--dark);
    color: var(--white);
    border-radius: var(--radius);
    font-weight: 600;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.product-cta:hover {
    background: var(--primary);
    color: var(--dark);
}

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

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

.products-table th,
.products-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.products-table th {
    background: var(--dark);
    color: var(--white);
    font-weight: 600;
    white-space: nowrap;
}

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

.products-table .table-product {
    display: flex;
    align-items: center;
    gap: 15px;
}

.products-table .table-product img {
    width: 60px;
    height: 60px;
    object-fit: contain;
    background: var(--gray-100);
    border-radius: var(--radius);
}

.products-table .table-cta {
    padding: 8px 16px;
    background: var(--primary);
    color: var(--dark);
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.875rem;
    white-space: nowrap;
}

.products-table .table-cta:hover {
    background: var(--primary-dark);
}

/* Quiz Section */
.quiz {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-light) 100%);
}

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

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

.quiz-container {
    max-width: 700px;
    margin: 0 auto;
}

.quiz-progress {
    margin-bottom: 40px;
}

.progress-bar {
    height: 8px;
    background: var(--gray-700);
    border-radius: 50px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: var(--gradient);
    border-radius: 50px;
    transition: width 0.5s ease;
    width: 20%;
}

.progress-text {
    font-size: 0.875rem;
    color: var(--gray-400);
}

.quiz-content {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    padding: 40px;
    backdrop-filter: blur(10px);
}

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

.quiz-question h3 {
    font-size: 1.5rem;
    color: var(--white);
    margin-bottom: 30px;
}

.quiz-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.quiz-option {
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    color: var(--white);
    font-weight: 500;
    transition: var(--transition);
    text-align: center;
}

.quiz-option:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--primary);
}

.quiz-option.selected {
    background: rgba(0, 217, 255, 0.2);
    border-color: var(--primary);
}

.quiz-option .option-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 10px;
}

.quiz-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
}

.quiz-nav button {
    padding: 12px 24px;
    border-radius: var(--radius);
    font-weight: 600;
    transition: var(--transition);
}

.quiz-prev {
    background: var(--gray-700);
    color: var(--white);
}

.quiz-prev:hover {
    background: var(--gray-600);
}

.quiz-next {
    background: var(--gradient);
    color: var(--dark);
}

.quiz-next:hover {
    transform: translateY(-2px);
}

.quiz-next:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Quiz Results */
.quiz-results {
    text-align: center;
    padding: 40px;
}

.results-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.results-title {
    font-size: 2rem;
    color: var(--white);
    margin-bottom: 30px;
}

.recommended-product {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 30px;
    text-align: left;
}

.recommended-product .product-name {
    font-size: 1.5rem;
}

/* Compare Section */
.compare {
    padding: 100px 0;
    background: var(--gray-100);
}

.compare-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.compare-slot {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow);
}

.compare-select {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 1rem;
    background: var(--white);
    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(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.compare-table th,
.compare-table td {
    padding: 15px 20px;
    text-align: center;
    border-bottom: 1px solid var(--gray-200);
}

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

.compare-table th:first-child,
.compare-table td:first-child {
    text-align: left;
    font-weight: 600;
    background: var(--gray-100);
    color: var(--gray-800);
}

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

.compare-table .check {
    color: var(--success);
    font-size: 1.2rem;
}

.compare-table .cross {
    color: var(--danger);
    font-size: 1.2rem;
}

.compare-table .compare-cta {
    display: inline-block;
    padding: 10px 20px;
    background: var(--primary);
    color: var(--dark);
    border-radius: var(--radius);
    font-weight: 600;
    transition: var(--transition);
}

.compare-table .compare-cta:hover {
    background: var(--primary-dark);
}

/* Guide Section */
.guide {
    padding: 100px 0;
    background: var(--white);
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.guide-card {
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 30px;
    transition: var(--transition);
}

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

.guide-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.guide-card h3 {
    font-size: 1.25rem;
    color: var(--gray-900);
    margin-bottom: 15px;
}

.guide-card p {
    color: var(--gray-600);
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.guide-card p:last-child {
    margin-bottom: 0;
}

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

.seo-wrapper {
    max-width: 900px;
    margin: 0 auto;
    background: var(--white);
    padding: 50px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
}

.seo-wrapper h2 {
    font-size: 2rem;
    color: var(--gray-900);
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 3px solid var(--primary);
}

.seo-wrapper h3 {
    font-size: 1.4rem;
    color: var(--gray-800);
    margin: 30px 0 15px;
}

.seo-wrapper p {
    color: var(--gray-700);
    margin-bottom: 15px;
    line-height: 1.8;
}

.seo-wrapper p:last-child {
    margin-bottom: 0;
}

.seo-wrapper strong {
    color: var(--gray-900);
}

.seo-wrapper em {
    color: var(--gray-600);
    font-style: italic;
}

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

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    margin-bottom: 15px;
}

.footer-description {
    color: var(--gray-500);
    font-size: 0.95rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.footer-column h4 {
    color: var(--white);
    font-size: 1rem;
    margin-bottom: 20px;
}

.footer-column a {
    display: block;
    color: var(--gray-500);
    margin-bottom: 12px;
    transition: var(--transition);
}

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

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--gray-700);
    text-align: center;
}

.footer-bottom p {
    color: var(--gray-500);
    font-size: 0.875rem;
    margin-bottom: 10px;
}

.affiliate-disclosure {
    font-size: 0.8rem !important;
    color: var(--gray-600) !important;
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        margin: 0 auto 30px;
    }

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

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

    .hero-image {
        order: -1;
        margin-bottom: 30px;
    }

    .bike-illustration {
        max-width: 300px;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--dark);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
    }

    .nav.active {
        display: flex;
    }

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

    .hero {
        padding: 120px 0 60px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .quiz-options {
        grid-template-columns: 1fr;
    }

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

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

    .seo-wrapper {
        padding: 30px 20px;
    }

    .seo-wrapper h2 {
        font-size: 1.5rem;
    }

    .seo-wrapper h3 {
        font-size: 1.2rem;
    }

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

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

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

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

    .filter-btn {
        width: 100%;
        max-width: 200px;
    }

    .quiz-content {
        padding: 25px 20px;
    }

    .quiz-nav {
        flex-direction: column;
        gap: 10px;
    }

    .quiz-nav button {
        width: 100%;
    }
}

/* 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: 0.2s; }
.product-card:nth-child(3) { animation-delay: 0.3s; }
.product-card:nth-child(4) { animation-delay: 0.4s; }
.product-card:nth-child(5) { animation-delay: 0.5s; }
.product-card:nth-child(6) { animation-delay: 0.6s; }

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--gray-200);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-500);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-600);
}