/* ===== CSS Variables ===== */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #0f172a;
    --accent: #f59e0b;
    --accent-light: #fbbf24;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --transition: all 0.2s 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(--gray-800);
    background-color: var(--white);
}

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

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

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

/* ===== Container ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
}

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

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

.nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-weight: 500;
    color: var(--gray-600);
    transition: var(--transition);
    padding: 0.5rem 0;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    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: 0.5rem;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    transition: var(--transition);
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 1rem;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 999;
}

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

.mobile-nav .nav-link {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
}

.mobile-nav .nav-link:hover {
    background: var(--gray-100);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: var(--transition);
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
    border: 1px solid var(--gray-200);
}

.btn-secondary:hover {
    background: var(--gray-200);
}

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

.btn-accent:hover {
    background: var(--accent-light);
}

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

/* ===== Hero Section ===== */
.hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    background: var(--primary);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-2xl);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-900);
}

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

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

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

.luggage-item {
    position: absolute;
    font-size: 8rem;
    animation: float 3s ease-in-out infinite;
}

.luggage-1 {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.luggage-2 {
    top: 10%;
    right: 10%;
    animation-delay: 0.5s;
    font-size: 5rem;
}

.luggage-3 {
    bottom: 10%;
    left: 30%;
    animation-delay: 1s;
    font-size: 6rem;
}

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

/* ===== Section Styles ===== */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Quiz Section ===== */
.quiz-section {
    padding: 5rem 0;
    background: var(--gray-50);
}

.quiz-container {
    max-width: 700px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-lg);
}

.quiz-progress {
    margin-bottom: 2rem;
}

.progress-bar {
    height: 8px;
    background: var(--gray-200);
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    border-radius: var(--radius);
    transition: width 0.3s ease;
    width: 25%;
}

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

.quiz-question {
    display: none;
}

.quiz-question.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.quiz-question h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
    text-align: center;
}

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

.quiz-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem;
    background: var(--gray-50);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    cursor: pointer;
}

.quiz-option:hover {
    border-color: var(--primary);
    background: var(--white);
    transform: translateY(-2px);
}

.quiz-option.selected {
    border-color: var(--primary);
    background: rgba(37, 99, 235, 0.05);
}

.option-icon {
    font-size: 2.5rem;
}

.option-text {
    font-weight: 500;
    color: var(--gray-700);
}

.quiz-results {
    display: none;
    text-align: center;
}

.quiz-results.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.quiz-results h3 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.results-intro {
    color: var(--gray-600);
    margin-bottom: 2rem;
}

.results-products {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.result-product {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    text-align: left;
}

.result-product-image {
    font-size: 3rem;
}

.result-product-info h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.result-product-info p {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.result-product .btn {
    margin-left: auto;
}

/* ===== Products Section ===== */
.products-section {
    padding: 5rem 0;
}

.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    align-items: center;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-600);
}

.filter-select {
    padding: 0.5rem 1rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 0.875rem;
    color: var(--gray-700);
    background: var(--white);
    cursor: pointer;
    min-width: 140px;
}

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

.view-toggle {
    display: flex;
    gap: 0.5rem;
    margin-left: auto;
}

.view-btn {
    padding: 0.5rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    color: var(--gray-400);
    transition: var(--transition);
}

.view-btn:hover,
.view-btn.active {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(37, 99, 235, 0.05);
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

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

.product-card:hover {
    border-color: var(--gray-300);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.product-image {
    position: relative;
    height: 200px;
    background: var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 6rem;
}

.product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.25rem 0.75rem;
    background: var(--accent);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius);
}

.product-compare-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 36px;
    height: 36px;
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: var(--transition);
    opacity: 0;
}

.product-card:hover .product-compare-btn {
    opacity: 1;
}

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

.product-compare-btn.added {
    background: var(--success);
    border-color: var(--success);
    color: var(--white);
    opacity: 1;
}

.product-content {
    padding: 1.25rem;
}

.product-brand {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.product-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.product-specs {
    display: flex;
    gap: 1rem;
    font-size: 0.8125rem;
    color: var(--gray-500);
    margin-bottom: 0.75rem;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin-bottom: 1rem;
}

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

.rating-count {
    font-size: 0.8125rem;
    color: var(--gray-500);
}

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

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

.product-price .original {
    font-size: 0.875rem;
    color: var(--gray-400);
    text-decoration: line-through;
    margin-left: 0.5rem;
    font-weight: 400;
}

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

.products-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

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

.products-table th {
    background: var(--gray-50);
    font-weight: 600;
    color: var(--gray-700);
}

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

.table-product {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

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

.table-product-name {
    font-weight: 500;
}

/* ===== Compare Section ===== */
.compare-section {
    padding: 5rem 0;
    background: var(--gray-50);
}

.compare-slots {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

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

.compare-slot:hover {
    border-color: var(--primary);
}

.compare-slot.filled {
    border-style: solid;
    border-color: var(--gray-200);
    cursor: default;
}

.slot-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray-400);
}

.slot-icon {
    font-size: 3rem;
    font-weight: 300;
}

.slot-text {
    font-weight: 500;
}

.slot-content {
    display: none;
    width: 100%;
    padding: 1.5rem;
    text-align: center;
}

.compare-slot.filled .slot-empty {
    display: none;
}

.compare-slot.filled .slot-content {
    display: block;
}

.slot-product-image {
    font-size: 5rem;
    margin-bottom: 1rem;
}

.slot-product-name {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.slot-product-brand {
    font-size: 0.8125rem;
    color: var(--gray-500);
    margin-bottom: 1rem;
}

.slot-remove {
    font-size: 0.8125rem;
    color: var(--error);
    cursor: pointer;
}

.slot-remove:hover {
    text-decoration: underline;
}

/* Compare Table */
.compare-table-container {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow);
}

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

.compare-table th,
.compare-table td {
    padding: 1rem 1.5rem;
    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: 500;
    background: var(--gray-50);
    width: 150px;
}

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

/* ===== Modal ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
}

.modal-content {
    position: relative;
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2rem;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    animation: modalSlide 0.3s ease;
}

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

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 1.5rem;
    color: var(--gray-400);
    cursor: pointer;
}

.modal-close:hover {
    color: var(--gray-700);
}

.modal h3 {
    margin-bottom: 1.5rem;
}

.modal-search {
    margin-bottom: 1rem;
}

.modal-search input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 1rem;
}

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

.modal-products {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 400px;
    overflow-y: auto;
}

.modal-product {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.modal-product:hover {
    background: var(--gray-100);
}

.modal-product-image {
    font-size: 2rem;
}

.modal-product-info h4 {
    font-size: 0.9375rem;
    font-weight: 500;
}

.modal-product-info p {
    font-size: 0.8125rem;
    color: var(--gray-500);
}

/* ===== Guide Section ===== */
.guide-section {
    padding: 5rem 0;
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.guide-card {
    padding: 2rem;
    background: var(--gray-50);
    border-radius: var(--radius-xl);
    transition: var(--transition);
}

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

.guide-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.guide-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--gray-900);
}

.guide-card p {
    color: var(--gray-600);
    font-size: 0.9375rem;
    line-height: 1.7;
}

/* ===== SEO Section ===== */
.seo-section {
    padding: 5rem 0;
    background: var(--gray-50);
}

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

.seo-content h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
}

.seo-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-800);
    margin: 2rem 0 0.75rem;
}

.seo-content p {
    color: var(--gray-600);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.seo-content strong {
    color: var(--gray-800);
}

/* ===== Footer ===== */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand .logo {
    margin-bottom: 1rem;
    color: var(--white);
}

.footer-brand p {
    font-size: 0.9375rem;
    line-height: 1.7;
}

.footer-links h4 {
    color: var(--white);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
}

.footer-links a {
    display: block;
    font-size: 0.9375rem;
    color: var(--gray-400);
    padding: 0.375rem 0;
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: 2rem;
    text-align: center;
    font-size: 0.875rem;
}

.affiliate-disclosure {
    margin-top: 0.5rem;
    font-size: 0.8125rem;
    color: var(--gray-500);
}

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

    .hero h1 {
        font-size: 2.75rem;
    }

    .hero-subtitle {
        margin: 0 auto 2rem;
    }

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

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

    .hero-visual {
        display: none;
    }

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

@media (max-width: 768px) {
    .nav {
        display: none;
    }

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

    .hero {
        padding: 7rem 0 3rem;
        min-height: auto;
    }

    .hero h1 {
        font-size: 2.25rem;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 1.5rem;
    }

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

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

    .filter-group {
        width: 100%;
    }

    .filter-select {
        flex: 1;
    }

    .view-toggle {
        margin-left: 0;
        justify-content: center;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }

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

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

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

    .section-header h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.875rem;
    }

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

    .btn {
        width: 100%;
    }

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