/* ============================================
   Brazilian Wax Australia - Main Stylesheet
   Modern, Clean, Professional Design
   ============================================ */

/* CSS Variables */
:root {
    /* Colors */
    --primary: #e91e8c;
    --primary-dark: #c4167a;
    --primary-light: #ff4da6;
    --secondary: #6c5ce7;
    --accent: #00cec9;
    --dark: #1a1a2e;
    --dark-light: #2d2d44;
    --gray-900: #16213e;
    --gray-800: #1f3460;
    --gray-700: #334155;
    --gray-600: #475569;
    --gray-500: #64748b;
    --gray-400: #94a3b8;
    --gray-300: #cbd5e1;
    --gray-200: #e2e8f0;
    --gray-100: #f1f5f9;
    --gray-50: #f8fafc;
    --white: #ffffff;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --gradient-dark: linear-gradient(135deg, var(--dark) 0%, var(--dark-light) 100%);
    --gradient-hero: linear-gradient(135deg, #1a1a2e 0%, #2d2d44 50%, #1a1a2e 100%);

    /* Typography */
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 40px rgba(233, 30, 140, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

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

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--dark);
    font-weight: 600;
    line-height: 1.3;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

.section-title {
    text-align: center;
    margin-bottom: var(--space-md);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

.section-subtitle {
    text-align: center;
    color: var(--gray-500);
    max-width: 600px;
    margin: var(--space-lg) auto var(--space-2xl);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-md), 0 4px 14px rgba(233, 30, 140, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 6px 20px rgba(233, 30, 140, 0.5);
}

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

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

.btn-outline {
    background: transparent;
    color: var(--gray-600);
    border: 2px solid var(--gray-300);
}

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--white);
}

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

.logo-accent {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-links a {
    color: var(--gray-300);
    font-weight: 500;
    position: relative;
    padding: var(--space-sm) 0;
}

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

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

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: all var(--transition-base);
}

/* Hero Section */
.hero {
    background: var(--gradient-hero);
    padding: 140px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-content {
    position: relative;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    color: var(--white);
    margin-bottom: var(--space-lg);
}

.hero p {
    color: var(--gray-300);
    font-size: 1.25rem;
    margin-bottom: var(--space-xl);
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-3xl);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-3xl);
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* Categories */
.categories {
    padding: var(--space-3xl) 0;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.category-card {
    background: var(--white);
    border: 2px solid var(--gray-100);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
}

.category-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.category-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.category-card h3 {
    margin-bottom: var(--space-sm);
}

.category-card p {
    color: var(--gray-500);
    font-size: 0.875rem;
}

/* Products Section */
.products {
    padding: var(--space-3xl) 0;
    background: var(--gray-50);
}

.filter-bar {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin-bottom: var(--space-lg);
}

.filter-btn {
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-600);
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(233, 30, 140, 0.05);
}

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

.view-toggle {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.view-btn {
    padding: var(--space-sm);
    color: var(--gray-400);
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

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

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-lg);
}

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

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

.product-badge {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
    z-index: 1;
}

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

.badge-new {
    background: var(--accent);
    color: var(--dark);
}

.badge-sale {
    background: var(--error);
    color: var(--white);
}

.product-image {
    width: 100%;
    height: 200px;
    background: var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    position: relative;
    overflow: hidden;
}

.product-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent 60%, rgba(0,0,0,0.05));
}

.product-content {
    padding: var(--space-lg);
}

.product-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-sm);
}

.product-title {
    font-size: 1.1rem;
    margin-bottom: var(--space-sm);
    line-height: 1.4;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

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

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

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.feature-tag {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.7rem;
    background: var(--gray-100);
    color: var(--gray-600);
    border-radius: var(--radius-sm);
}

.product-price {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.price-current {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
}

.price-original {
    font-size: 1rem;
    color: var(--gray-400);
    text-decoration: line-through;
}

.product-actions {
    display: flex;
    gap: var(--space-sm);
}

.product-actions .btn {
    flex: 1;
}

.btn-compare {
    padding: var(--space-sm);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    color: var(--gray-500);
    background: var(--white);
}

.btn-compare:hover,
.btn-compare.active {
    border-color: var(--secondary);
    color: var(--secondary);
    background: rgba(108, 92, 231, 0.05);
}

/* Product Table */
.product-table-container {
    overflow-x: auto;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

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

.product-table th,
.product-table td {
    padding: var(--space-md) var(--space-lg);
    text-align: left;
    border-bottom: 1px solid var(--gray-100);
}

.product-table th {
    background: var(--gray-50);
    font-weight: 600;
    color: var(--dark);
    white-space: nowrap;
}

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

.product-table .product-name {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.product-table .product-thumb {
    width: 50px;
    height: 50px;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

/* Quiz Section */
.quiz-section {
    padding: var(--space-3xl) 0;
    background: var(--gradient-hero);
}

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

.quiz-section .section-subtitle {
    color: var(--gray-300);
}

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

.quiz-progress {
    margin-bottom: var(--space-xl);
}

.progress-bar {
    height: 8px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--space-sm);
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
    width: 20%;
}

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

.quiz-question {
    margin-bottom: var(--space-xl);
}

.quiz-question h3 {
    margin-bottom: var(--space-lg);
    font-size: 1.25rem;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.quiz-option {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--gray-50);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.quiz-option:hover {
    border-color: var(--primary-light);
    background: rgba(233, 30, 140, 0.05);
}

.quiz-option.selected {
    border-color: var(--primary);
    background: rgba(233, 30, 140, 0.1);
}

.quiz-option input {
    display: none;
}

.quiz-option .option-radio {
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-300);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

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

.quiz-option.selected .option-radio::after {
    content: '';
    width: 10px;
    height: 10px;
    background: var(--primary);
    border-radius: 50%;
}

.quiz-navigation {
    display: flex;
    justify-content: space-between;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

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

.quiz-results h3 {
    margin-bottom: var(--space-xl);
    color: var(--primary);
}

.result-product {
    background: var(--gray-50);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
}

/* Compare Section */
.compare-section {
    padding: var(--space-3xl) 0;
}

.compare-selector {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.compare-slot {
    position: relative;
}

.compare-select {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    font-size: 1rem;
    font-family: inherit;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    background: var(--white);
    cursor: pointer;
    transition: all var(--transition-fast);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1rem;
}

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

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

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

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

.compare-table th:first-child,
.compare-table td:first-child {
    text-align: left;
    font-weight: 600;
    background: var(--gray-50);
    position: sticky;
    left: 0;
}

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

.compare-table .product-header {
    padding: var(--space-lg);
}

.compare-table .product-header .emoji {
    font-size: 3rem;
    display: block;
    margin-bottom: var(--space-sm);
}

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

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

/* Guide Section */
.guide-section {
    padding: var(--space-3xl) 0;
    background: var(--gray-50);
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.guide-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    position: relative;
    transition: all var(--transition-base);
}

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

.guide-number {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.guide-card h3 {
    margin-bottom: var(--space-md);
    padding-right: 50px;
}

.guide-card p {
    color: var(--gray-600);
    line-height: 1.7;
}

/* FAQ Section */
.faq-section {
    padding: var(--space-3xl) 0;
}

.faq-grid {
    max-width: 800px;
    margin: var(--space-2xl) auto 0;
}

.faq-item {
    border-bottom: 1px solid var(--gray-200);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg) 0;
    font-size: 1rem;
    font-weight: 500;
    color: var(--dark);
    text-align: left;
    transition: color var(--transition-fast);
}

.faq-question:hover {
    color: var(--primary);
}

.faq-icon {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--primary);
    transition: transform var(--transition-base);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base), padding var(--transition-base);
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding-bottom: var(--space-lg);
}

.faq-answer p {
    color: var(--gray-600);
    line-height: 1.7;
}

/* SEO Section */
.seo-section {
    padding: var(--space-3xl) 0;
    background: var(--gray-50);
}

.seo-section h2 {
    margin-bottom: var(--space-xl);
    text-align: center;
}

.seo-content {
    max-width: 900px;
    margin: 0 auto;
    color: var(--gray-600);
    line-height: 1.8;
}

.seo-content h3 {
    margin: var(--space-xl) 0 var(--space-md);
    color: var(--dark);
    font-size: 1.25rem;
}

.seo-content p {
    margin-bottom: var(--space-md);
}

/* Footer */
.footer {
    background: var(--dark);
    color: var(--gray-300);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-brand p {
    margin-top: var(--space-md);
    font-size: 0.875rem;
    line-height: 1.7;
}

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

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-links a {
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

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

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

.affiliate-disclosure {
    font-size: 0.8rem;
    color: var(--gray-400);
    max-width: 800px;
    margin: 0 auto var(--space-md);
    line-height: 1.6;
}

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

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: 99;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
}

/* Utility Classes */
.hidden {
    display: none !important;
}

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

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
    }

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

    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--dark);
        flex-direction: column;
        padding: var(--space-xl);
        gap: var(--space-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

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

    .hero-stats {
        gap: var(--space-xl);
    }

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

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

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

    .quiz-container {
        padding: var(--space-lg);
    }

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

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

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

    .footer-brand {
        margin-bottom: var(--space-lg);
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-buttons .btn {
        width: 100%;
        max-width: 300px;
    }

    .filter-bar {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: var(--space-sm);
        -webkit-overflow-scrolling: touch;
    }

    .filter-btn {
        white-space: nowrap;
    }

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

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

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

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

.animate-pulse {
    animation: pulse 2s infinite;
}

/* Print Styles */
@media print {
    .header,
    .hero,
    .quiz-section,
    .compare-section,
    .back-to-top,
    .footer {
        display: none;
    }

    .products,
    .guide-section,
    .faq-section {
        padding: 1rem 0;
    }
}