/* =============================================
   Balance Bike Australia - Styles
   Modern, Clean UI for Australian Families
   ============================================= */

/* CSS Variables */
:root {
    --primary: #FF6B35;
    --primary-dark: #e55a2b;
    --secondary: #4ECDC4;
    --secondary-dark: #3db8b0;
    --dark: #2D3047;
    --dark-light: #3d4060;
    --light: #F7F7F7;
    --white: #FFFFFF;
    --gray: #6B7280;
    --gray-light: #E5E7EB;
    --success: #10B981;
    --warning: #F59E0B;
    --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: 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: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark);
    background: var(--white);
    overflow-x: hidden;
}

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

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 700;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(255, 107, 53, 0.4);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.5);
}

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

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

.btn-small {
    padding: 10px 20px;
    font-size: 0.9rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.5rem;
    font-weight: 800;
}

.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: 600;
    color: var(--gray);
    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 {
    color: var(--primary);
}

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

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

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--dark);
    border-radius: 2px;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 120px 20px 60px;
    background: linear-gradient(135deg, #FFF5F0 0%, #F0FFFE 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

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

.hero-content h1 {
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

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

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary);
}

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

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

.bike-illustration {
    width: 100%;
    max-width: 500px;
    animation: float 3s ease-in-out infinite;
}

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

/* Features Bar */
.features-bar {
    background: var(--dark);
    padding: 20px 0;
}

.features-bar .container {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 20px;
}

.feature {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--white);
    font-weight: 600;
}

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

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

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

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

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

/* View Toggle */
.view-toggle {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 24px;
}

.view-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--light);
    border: 2px solid transparent;
    border-radius: var(--radius);
    font-family: inherit;
    font-weight: 600;
    color: var(--gray);
    cursor: pointer;
    transition: var(--transition);
}

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

.view-btn:hover:not(.active) {
    background: var(--gray-light);
}

/* Filter Bar */
.filter-bar {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 32px;
    padding: 20px;
    background: var(--light);
    border-radius: var(--radius);
}

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

.filter-group label {
    font-weight: 600;
    color: var(--dark);
    white-space: nowrap;
}

.filter-group select {
    padding: 10px 16px;
    border: 2px solid var(--gray-light);
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.95rem;
    background: var(--white);
    cursor: pointer;
    transition: var(--transition);
}

.filter-group select:focus {
    outline: none;
    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);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}

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

.product-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 12px;
    background: var(--primary);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 20px;
    text-transform: uppercase;
}

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

.product-badge.premium {
    background: linear-gradient(135deg, #FFD700, #FFA500);
}

.product-image {
    width: 100%;
    height: 200px;
    background: var(--light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
}

.product-content {
    padding: 20px;
}

.product-brand {
    font-size: 0.8rem;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.product-name {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--dark);
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.stars {
    color: #FFD700;
}

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

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

.spec {
    font-size: 0.8rem;
    color: var(--gray);
    display: flex;
    align-items: center;
    gap: 4px;
}

.product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--gray-light);
}

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

.product-price span {
    font-size: 0.9rem;
    color: var(--gray);
    font-weight: 400;
}

.compare-checkbox {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--gray);
    cursor: pointer;
}

.compare-checkbox input {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
}

/* Products Table */
.products-table-container {
    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 20px;
    text-align: left;
    border-bottom: 1px solid var(--gray-light);
}

.products-table th {
    background: var(--dark);
    color: var(--white);
    font-weight: 700;
    white-space: nowrap;
}

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

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

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

.table-product-name {
    font-weight: 600;
}

.table-product-brand {
    font-size: 0.8rem;
    color: var(--gray);
}

.table-rating {
    color: #FFD700;
}

.table-price {
    font-weight: 700;
    color: var(--primary);
}

/* Quiz Section */
.quiz {
    background: linear-gradient(135deg, #FFF5F0 0%, #F0FFFE 100%);
}

.quiz-container {
    max-width: 700px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

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

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

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 4px;
    transition: width 0.5s ease;
    width: 25%;
}

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

.quiz-question {
    display: none;
    animation: fadeIn 0.5s ease;
}

.quiz-question.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.quiz-question h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
    text-align: center;
}

.quiz-options {
    display: grid;
    gap: 12px;
}

.quiz-option {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    background: var(--light);
    border: 2px solid transparent;
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.quiz-option:hover {
    background: var(--white);
    border-color: var(--primary);
    transform: translateX(8px);
}

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

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

.option-text {
    font-weight: 600;
}

/* Quiz Result */
.quiz-result {
    text-align: center;
    animation: fadeIn 0.5s ease;
}

.result-badge {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, #FFD700, #FFA500);
    color: var(--dark);
    font-weight: 700;
    border-radius: 20px;
    margin-bottom: 24px;
}

.result-product {
    background: var(--light);
    border-radius: var(--radius);
    padding: 32px;
    margin-bottom: 24px;
}

.result-product-icon {
    font-size: 4rem;
    margin-bottom: 16px;
}

.result-product h4 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.result-product p {
    color: var(--gray);
    margin-bottom: 16px;
}

.result-price {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 20px;
}

.result-features {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.result-feature {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    color: var(--gray);
}

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

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

.compare-slot {
    position: relative;
}

.compare-select {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--gray-light);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 1rem;
    background: var(--white);
    cursor: pointer;
    transition: var(--transition);
}

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

.compare-remove {
    position: absolute;
    top: 50%;
    right: 10px;
    transform: translateY(-50%);
    width: 24px;
    height: 24px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.compare-table-container {
    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 20px;
    text-align: center;
    border-bottom: 1px solid var(--gray-light);
}

.compare-table th {
    background: var(--dark);
    color: var(--white);
    font-weight: 700;
}

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

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

.compare-product-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

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

.compare-empty {
    text-align: center;
    padding: 60px 20px;
    background: var(--white);
    border-radius: var(--radius);
    color: var(--gray);
}

/* Guide Section */
.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

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

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

.guide-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

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

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

/* SEO Content Section */
.seo-content {
    background: var(--white);
    border-top: 1px solid var(--gray-light);
}

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

.seo-article h2 {
    margin-bottom: 24px;
    text-align: center;
}

.seo-article h3 {
    margin: 32px 0 16px;
    color: var(--dark);
}

.seo-article p {
    margin-bottom: 16px;
    color: var(--gray);
    line-height: 1.8;
}

.seo-article ul {
    margin: 16px 0;
    padding-left: 24px;
}

.seo-article li {
    margin-bottom: 12px;
    color: var(--gray);
    line-height: 1.7;
}

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

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

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

.footer-brand p {
    color: var(--gray);
    margin-top: 16px;
}

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

.footer-links h4,
.footer-newsletter h4 {
    color: var(--white);
    margin-bottom: 20px;
    font-size: 1.1rem;
}

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

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

.footer-links a {
    color: var(--gray);
    transition: var(--transition);
}

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

.footer-newsletter p {
    color: var(--gray);
    margin-bottom: 16px;
}

.newsletter-form {
    display: flex;
    gap: 8px;
}

.newsletter-form input {
    flex: 1;
    padding: 12px 16px;
    border: none;
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 0.95rem;
}

.newsletter-form .btn {
    padding: 12px 20px;
}

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

.footer-bottom p {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.affiliate-disclosure {
    font-size: 0.8rem !important;
    opacity: 0.7;
}

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

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

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

    .hero-image {
        order: -1;
    }

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

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        box-shadow: var(--shadow);
    }

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

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

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

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

    .filter-group select {
        width: 100%;
    }

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

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

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

    .quiz-container {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }

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

    section {
        padding: 60px 0;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

/* Animations */
.fade-in {
    animation: fadeIn 0.5s ease;
}

.slide-up {
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Loading State */
.loading {
    display: flex;
    justify-content: center;
    padding: 40px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray-light);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}