/* CSS Variables */
:root {
    --primary: #FF6B35;
    --primary-dark: #E55A2B;
    --secondary: #2D3142;
    --accent: #4ECDC4;
    --light: #F7F7F7;
    --white: #FFFFFF;
    --gray-100: #F8F9FA;
    --gray-200: #E9ECEF;
    --gray-300: #DEE2E6;
    --gray-400: #CED4DA;
    --gray-500: #ADB5BD;
    --gray-600: #6C757D;
    --gray-700: #495057;
    --gray-800: #343A40;
    --gray-900: #212529;
    --success: #28A745;
    --warning: #FFC107;
    --danger: #DC3545;
    --shadow-sm: 0 2px 4px 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: 8px;
    --radius: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s ease;
}

/* Reset & Base Styles */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
}

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

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

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

ul {
    list-style: none;
}

/* 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);
    text-transform: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.4);
}

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

.btn-secondary {
    background: var(--white);
    color: var(--secondary);
    border: 2px solid var(--gray-300);
}

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

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

.btn-amazon {
    background: #FF9900;
    color: var(--gray-900);
}

.btn-amazon:hover {
    background: #E68A00;
    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);
    box-shadow: var(--shadow-sm);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.25rem;
    font-weight: 700;
}

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

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

.nav-list {
    display: flex;
    gap: 32px;
}

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

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

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

.nav-list 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 {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--gray-800);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, #FFF5F0 0%, #FFF 50%, #F0FFFE 100%);
    min-height: 90vh;
    display: flex;
    align-items: center;
}

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

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--secondary);
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

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

.ukulele-showcase {
    position: relative;
    width: 400px;
    height: 400px;
}

.uke-card {
    position: absolute;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    transition: var(--transition);
}

.uke-1 {
    width: 200px;
    height: 200px;
    top: 0;
    left: 0;
    animation: float 6s ease-in-out infinite;
}

.uke-2 {
    width: 180px;
    height: 180px;
    top: 40px;
    right: 20px;
    animation: float 6s ease-in-out infinite 1s;
}

.uke-3 {
    width: 160px;
    height: 160px;
    bottom: 40px;
    left: 80px;
    animation: float 6s ease-in-out infinite 2s;
}

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

/* Stats Section */
.stats {
    padding: 40px 0;
    background: var(--secondary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.stat-item {
    text-align: center;
    color: var(--white);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 12px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--gray-600);
}

/* Products Section */
.products {
    padding: 80px 0;
    background: var(--gray-100);
}

.filter-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-bottom: 24px;
}

.filter-btn {
    padding: 10px 20px;
    background: var(--white);
    border: 2px solid var(--gray-300);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

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

.view-toggle {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-bottom: 24px;
}

.view-btn {
    padding: 10px;
    background: var(--white);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    color: var(--gray-600);
}

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

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

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

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

.product-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 6px 12px;
    background: var(--primary);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50px;
    z-index: 1;
}

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

.product-badge.top-rated {
    background: var(--accent);
    color: var(--secondary);
}

.product-image {
    height: 200px;
    background: linear-gradient(135deg, #FFF5F0, #F0FFFE);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
}

.product-content {
    padding: 20px;
}

.product-brand {
    font-size: 0.8rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.product-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 8px;
    line-height: 1.3;
}

.product-meta {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.product-meta span {
    font-size: 0.8rem;
    padding: 4px 8px;
    background: var(--gray-100);
    border-radius: 4px;
    color: var(--gray-600);
}

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

.stars {
    color: #FFB800;
    font-size: 0.9rem;
}

.rating-count {
    font-size: 0.8rem;
    color: var(--gray-500);
}

.product-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 16px;
}

.product-price .original {
    font-size: 0.9rem;
    color: var(--gray-500);
    text-decoration: line-through;
    font-weight: 400;
    margin-left: 8px;
}

.product-actions {
    display: flex;
    gap: 8px;
}

.product-actions .btn {
    flex: 1;
    padding: 12px 16px;
    font-size: 0.875rem;
}

.btn-compare {
    background: var(--gray-100);
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.btn-compare:hover {
    background: var(--accent);
    color: var(--secondary);
    border-color: var(--accent);
}

.btn-compare.added {
    background: var(--accent);
    color: var(--secondary);
    border-color: var(--accent);
}

/* Products Table */
.products-table-wrapper {
    overflow-x: auto;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

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

.products-table th,
.products-table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

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

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

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

.table-product-image {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #FFF5F0, #F0FFFE);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.table-product-info h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--secondary);
}

.table-product-info span {
    font-size: 0.8rem;
    color: var(--gray-500);
}

.hidden {
    display: none !important;
}

/* Quiz Section */
.quiz {
    padding: 80px 0;
    background: var(--white);
}

.quiz-container {
    max-width: 700px;
    margin: 0 auto;
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow);
}

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

.progress-bar {
    height: 8px;
    background: var(--gray-300);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 4px;
    transition: width 0.4s ease;
    width: 20%;
}

.progress-text {
    font-size: 0.9rem;
    color: var(--gray-600);
}

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

.quiz-question h3 {
    font-size: 1.5rem;
    color: var(--secondary);
    margin-bottom: 24px;
}

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

.quiz-option {
    padding: 16px 20px;
    background: var(--white);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 12px;
}

.quiz-option:hover {
    border-color: var(--primary);
    background: #FFF5F0;
}

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

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

.quiz-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 24px;
}

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

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

.quiz-result h3 {
    font-size: 1.75rem;
    color: var(--secondary);
    margin-bottom: 16px;
}

.quiz-result p {
    color: var(--gray-600);
    margin-bottom: 24px;
}

.result-products {
    display: grid;
    gap: 16px;
    margin-top: 24px;
}

.result-product {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

.result-product-image {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #FFF5F0, #F0FFFE);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.result-product-info {
    flex: 1;
    text-align: left;
}

.result-product-info h4 {
    font-size: 1rem;
    color: var(--secondary);
    margin-bottom: 4px;
}

.result-product-info p {
    font-size: 0.85rem;
    color: var(--gray-500);
    margin-bottom: 8px;
}

.btn-restart {
    margin-top: 24px;
}

/* Compare Section */
.compare {
    padding: 80px 0;
    background: var(--gray-100);
}

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

.compare-slot {
    min-height: 200px;
    background: var(--white);
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.compare-slot.filled {
    border-style: solid;
    border-color: var(--primary);
}

.add-compare-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--gray-500);
    transition: var(--transition);
}

.add-compare-btn:hover {
    color: var(--primary);
}

.plus-icon {
    width: 50px;
    height: 50px;
    border: 2px solid currentColor;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.compare-item {
    padding: 20px;
    text-align: center;
    width: 100%;
}

.compare-item-image {
    font-size: 4rem;
    margin-bottom: 12px;
}

.compare-item h4 {
    font-size: 1rem;
    color: var(--secondary);
    margin-bottom: 8px;
}

.compare-item-price {
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 12px;
}

.remove-compare {
    padding: 8px 16px;
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.85rem;
    transition: var(--transition);
}

.remove-compare:hover {
    background: var(--danger);
    color: var(--white);
    border-color: var(--danger);
}

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

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

.compare-table th,
.compare-table td {
    padding: 16px;
    text-align: center;
    border-bottom: 1px solid var(--gray-200);
}

.compare-table th:first-child,
.compare-table td:first-child {
    text-align: left;
    font-weight: 600;
    background: var(--gray-50);
}

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

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 20px;
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius);
    width: 100%;
    max-width: 500px;
    max-height: 80vh;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--gray-200);
}

.modal-header h3 {
    font-size: 1.25rem;
    color: var(--secondary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray-500);
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--gray-800);
}

.modal-body {
    padding: 20px;
    max-height: 60vh;
    overflow-y: auto;
}

.modal-search {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    margin-bottom: 16px;
    transition: var(--transition);
}

.modal-search:focus {
    outline: none;
    border-color: var(--primary);
}

.modal-products {
    display: grid;
    gap: 12px;
}

.modal-product {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.modal-product:hover {
    background: #FFF5F0;
}

.modal-product-image {
    width: 50px;
    height: 50px;
    background: var(--white);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.modal-product-info h4 {
    font-size: 0.9rem;
    color: var(--secondary);
}

.modal-product-info span {
    font-size: 0.8rem;
    color: var(--gray-500);
}

/* Buyer's Guide */
.guide {
    padding: 80px 0;
    background: var(--white);
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.guide-card {
    background: var(--gray-100);
    padding: 32px;
    border-radius: var(--radius);
    transition: var(--transition);
}

.guide-card:hover {
    box-shadow: var(--shadow);
}

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

.guide-card h3 {
    font-size: 1.25rem;
    color: var(--secondary);
    margin-bottom: 16px;
}

.guide-card p {
    font-size: 0.9rem;
    color: var(--gray-600);
    margin-bottom: 8px;
    line-height: 1.5;
}

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

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

.seo-wrapper h2 {
    font-size: 2rem;
    color: var(--secondary);
    margin-bottom: 24px;
}

.seo-wrapper h3 {
    font-size: 1.4rem;
    color: var(--secondary);
    margin-top: 32px;
    margin-bottom: 16px;
}

.seo-wrapper p {
    color: var(--gray-700);
    margin-bottom: 16px;
    line-height: 1.8;
}

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

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

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

.footer-brand p {
    margin-top: 16px;
    font-size: 0.9rem;
    opacity: 0.8;
    line-height: 1.6;
}

.footer-links h4 {
    font-size: 1rem;
    margin-bottom: 20px;
}

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

.footer-links a {
    font-size: 0.9rem;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--primary);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.85rem;
    opacity: 0.7;
    margin-bottom: 8px;
}

.affiliate-disclosure {
    font-size: 0.75rem !important;
    max-width: 800px;
    margin: 0 auto;
}

/* Responsive Design */
@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 32px;
    }

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

    .hero-visual {
        display: none;
    }

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

@media (max-width: 768px) {
    .nav-list {
        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-list.active {
        display: flex;
    }

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

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

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

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

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

    .quiz-container {
        padding: 24px;
    }

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

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
    }

    .filter-tabs {
        gap: 8px;
    }

    .filter-btn {
        padding: 8px 16px;
        font-size: 0.8rem;
    }

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

    .stat-number {
        font-size: 2rem;
    }
}

/* Scroll to top */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    z-index: 999;
}

.scroll-top.visible {
    display: flex;
}

.scroll-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.6s ease forwards;
}