/* CSS Variables */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #f59e0b;
    --secondary-dark: #d97706;
    --success: #10b981;
    --danger: #ef4444;
    --dark: #1e293b;
    --dark-light: #334155;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --gray-lighter: #e2e8f0;
    --light: #f8fafc;
    --white: #ffffff;
    --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);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 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;
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--light);
}

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

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

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p { color: var(--gray); }

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--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);
}

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

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

.btn-amazon {
    background: linear-gradient(135deg, #ff9900 0%, #e88b00 100%);
    color: var(--dark);
    font-weight: 700;
}

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

.btn-sm {
    padding: 10px 20px;
    font-size: 0.875rem;
}

/* 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-lighter);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.25rem;
}

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

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    font-weight: 500;
    color: var(--dark-light);
}

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

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

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

/* Hero Section */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, var(--light) 0%, #e0e7ff 100%);
}

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

.hero h1 {
    margin-bottom: 20px;
}

.hero .highlight {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 32px;
    color: var(--gray);
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 48px;
}

.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);
}

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

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-header h2 {
    margin-bottom: 12px;
}

.section-header p {
    font-size: 1.125rem;
}

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

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

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

.filter-btn {
    padding: 10px 20px;
    background: var(--light);
    border: 1px solid var(--gray-lighter);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

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

.view-toggle {
    display: flex;
    gap: 8px;
}

.view-btn {
    padding: 10px;
    background: var(--light);
    border: 1px solid var(--gray-lighter);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    color: var(--gray);
}

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

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

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

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

.product-image {
    height: 200px;
    background: linear-gradient(135deg, var(--light) 0%, #e0e7ff 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    position: relative;
}

.product-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 12px;
    background: var(--secondary);
    color: var(--dark);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 20px;
}

.product-compare {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 8px;
    background: var(--white);
    border: 1px solid var(--gray-lighter);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

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

.product-info {
    padding: 20px;
}

.product-brand {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.product-name {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--dark);
}

.product-desc {
    font-size: 0.875rem;
    color: var(--gray);
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

.feature-tag {
    padding: 4px 10px;
    background: var(--light);
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--gray);
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

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

.rating-count {
    font-size: 0.75rem;
    color: var(--gray);
}

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

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

.product-cta {
    padding: 10px 16px;
    font-size: 0.875rem;
}

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

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

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

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

.products-table td {
    font-size: 0.875rem;
}

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

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

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

.hidden {
    display: none !important;
}

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

.quiz-container {
    max-width: 700px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 48px;
    box-shadow: var(--shadow-lg);
}

.quiz-header {
    text-align: center;
    margin-bottom: 32px;
}

.quiz-header h2 {
    margin-bottom: 8px;
}

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

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

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

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

.quiz-question {
    margin-bottom: 24px;
}

.quiz-question h3 {
    margin-bottom: 20px;
    font-size: 1.25rem;
}

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

.quiz-option {
    padding: 16px 20px;
    background: var(--light);
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
    text-align: left;
}

.quiz-option:hover {
    border-color: var(--primary);
    background: #f0f0ff;
}

.quiz-option.selected {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(129, 140, 248, 0.1) 100%);
}

.quiz-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 32px;
}

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

.quiz-result h3 {
    margin-bottom: 16px;
    color: var(--success);
}

.result-shoes {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 24px;
}

.result-shoe {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--light);
    border-radius: var(--radius);
    text-align: left;
}

.result-shoe-icon {
    font-size: 2.5rem;
}

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

.result-shoe-name {
    font-weight: 600;
    margin-bottom: 4px;
}

.result-shoe-desc {
    font-size: 0.875rem;
    color: var(--gray);
}

.result-match {
    padding: 4px 12px;
    background: var(--success);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 20px;
}

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

.compare-selectors {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

.compare-slot {
    position: relative;
}

.compare-select {
    width: 100%;
    padding: 14px 16px;
    font-size: 1rem;
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius);
    background: var(--white);
    cursor: pointer;
    transition: var(--transition);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.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);
    overflow: hidden;
    box-shadow: var(--shadow);
}

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

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

.compare-table .feature-col {
    text-align: left;
    font-weight: 600;
    background: var(--white);
}

.compare-table .shoe-col {
    min-width: 180px;
}

.rating-bar {
    height: 8px;
    background: var(--gray-lighter);
    border-radius: 4px;
    overflow: hidden;
    margin: 0 auto;
    max-width: 100px;
}

.rating-bar-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 4px;
}

/* Buying Guide Section */
.guide-section {
    background: var(--white);
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.guide-card {
    padding: 32px;
    background: var(--light);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

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

.guide-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.guide-card h3 {
    margin-bottom: 12px;
}

.guide-card p {
    font-size: 0.9375rem;
}

/* SEO Section */
.seo-section {
    background: var(--light);
    padding: 60px 0;
}

.seo-content {
    max-width: 800px;
    margin: 0 auto;
}

.seo-content h2 {
    margin-bottom: 24px;
    font-size: 1.75rem;
}

.seo-content h3 {
    margin: 32px 0 16px;
    font-size: 1.25rem;
    color: var(--dark);
}

.seo-content p {
    margin-bottom: 16px;
    line-height: 1.8;
}

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

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

.footer-brand p {
    color: var(--gray-light);
    margin-top: 16px;
    font-size: 0.9375rem;
}

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

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

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

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

.footer-links a {
    color: var(--gray-light);
    font-size: 0.9375rem;
}

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

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

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

.affiliate-disclosure {
    margin-top: 12px;
    font-size: 0.75rem !important;
    color: var(--gray) !important;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.75rem; }

    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        border-bottom: 1px solid var(--gray-lighter);
        box-shadow: var(--shadow);
    }

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

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

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

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

    .hero-stats {
        gap: 24px;
    }

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

    .quiz-container {
        padding: 24px;
    }

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

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

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    h1 { font-size: 1.875rem; }

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

    .guide-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(2) { animation-delay: 0.1s; }
.product-card:nth-child(3) { animation-delay: 0.2s; }
.product-card:nth-child(4) { animation-delay: 0.3s; }
.product-card:nth-child(5) { animation-delay: 0.4s; }
.product-card:nth-child(6) { animation-delay: 0.5s; }