/* ===== CSS Variables ===== */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #10b981;
    --accent: #f43f5e;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --dark-lighter: #334155;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --light: #f1f5f9;
    --white: #ffffff;
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    --gradient-text: linear-gradient(135deg, #6366f1 0%, #ec4899 50%, #f43f5e 100%);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --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: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--dark);
    color: var(--light);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

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

ul {
    list-style: none;
}

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

/* ===== Typography ===== */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: 16px;
    text-align: center;
}

.section-subtitle {
    text-align: center;
    color: var(--gray-light);
    margin-bottom: 40px;
}

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

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

.btn-primary {
    background: var(--gradient);
    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: transparent;
    color: var(--light);
    border: 2px solid var(--dark-lighter);
}

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

.btn-buy {
    background: #ff9900;
    color: var(--dark);
    font-weight: 700;
    padding: 10px 20px;
    font-size: 0.9rem;
}

.btn-buy:hover {
    background: #ffad33;
    transform: translateY(-2px);
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--dark-lighter);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.25rem;
    font-weight: 800;
}

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

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

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

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

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: width 0.3s ease;
}

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

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

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(244, 63, 94, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 100%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 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='%236366f1' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

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

.hero-title {
    font-size: clamp(2.5rem, 7vw, 4.5rem);
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-light);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

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

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* ===== Filter Section ===== */
.filter-section {
    padding: 80px 0 40px;
    background: var(--dark);
}

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: flex-end;
    padding: 24px;
    background: var(--dark-light);
    border-radius: var(--radius-lg);
    margin-top: 32px;
}

.filter-group {
    flex: 1;
    min-width: 150px;
}

.filter-group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray);
    margin-bottom: 8px;
}

.filter-group select {
    width: 100%;
    padding: 12px 16px;
    background: var(--dark);
    border: 1px solid var(--dark-lighter);
    border-radius: var(--radius);
    color: var(--light);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

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

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

.view-btn {
    padding: 12px;
    background: var(--dark);
    border: 1px solid var(--dark-lighter);
    border-radius: var(--radius);
    color: var(--gray);
    cursor: pointer;
    transition: var(--transition);
}

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

/* ===== Products Section ===== */
.products-section {
    padding: 40px 0 80px;
}

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

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

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

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

.product-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 6px 12px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 20px;
    text-transform: uppercase;
}

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

.badge-new {
    background: var(--secondary);
    color: var(--white);
}

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

.product-content {
    padding: 20px;
}

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

.product-name {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 8px 0;
    color: var(--white);
}

.product-specs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 16px 0;
}

.spec-tag {
    padding: 4px 10px;
    background: var(--dark);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--gray-light);
}

.product-price {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--dark-lighter);
}

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

.price-currency {
    font-size: 1rem;
    color: var(--gray);
}

.compare-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    font-size: 0.85rem;
    color: var(--gray-light);
    cursor: pointer;
}

.compare-checkbox input {
    accent-color: var(--primary);
    width: 16px;
    height: 16px;
}

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

.products-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--dark-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

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

.products-table th {
    background: var(--dark);
    font-weight: 600;
    color: var(--gray-light);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

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

.table-product-icon {
    width: 40px;
    height: 40px;
    background: var(--dark);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

/* ===== Quiz Section ===== */
.quiz-section {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--dark) 0%, var(--dark-light) 100%);
}

.quiz-container {
    max-width: 700px;
    margin: 0 auto;
    background: var(--dark-light);
    border-radius: var(--radius-lg);
    padding: 48px;
    border: 1px solid var(--dark-lighter);
}

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

.quiz-header p {
    color: var(--gray-light);
}

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

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

.progress-fill {
    height: 100%;
    background: var(--gradient);
    width: 20%;
    transition: width 0.5s ease;
}

.progress-text {
    font-size: 0.85rem;
    color: var(--gray);
}

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

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

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

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

.quiz-option:hover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

.quiz-option.selected {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.15);
}

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

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

.quiz-result h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.result-card {
    background: var(--dark);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin: 24px 0;
    border: 2px solid var(--primary);
}

.result-card .product-name {
    font-size: 1.5rem;
}

.result-match {
    display: inline-block;
    padding: 6px 16px;
    background: var(--secondary);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 16px;
}

/* ===== Compare Section ===== */
.compare-section {
    padding: 100px 0;
    background: var(--dark);
}

.compare-slots {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.compare-slot {
    min-height: 200px;
    background: var(--dark-light);
    border: 2px dashed var(--dark-lighter);
    border-radius: var(--radius-lg);
    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: 12px;
    background: none;
    border: none;
    color: var(--gray);
    cursor: pointer;
    transition: var(--transition);
    padding: 20px;
}

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

.plus-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    border: 2px solid currentColor;
    border-radius: 50%;
}

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

.compare-item .remove-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    background: var(--accent);
    border: none;
    border-radius: 50%;
    color: var(--white);
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.compare-table-wrapper {
    overflow-x: auto;
}

.compare-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--dark-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

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

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

.compare-table td:first-child {
    text-align: left;
    color: var(--gray-light);
    font-weight: 500;
}

.compare-table .highlight {
    color: var(--secondary);
    font-weight: 600;
}

/* ===== Guides Section ===== */
.guides-section {
    padding: 100px 0;
    background: var(--dark-light);
}

.guides-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.guide-card {
    background: var(--dark);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
    border: 1px solid var(--dark-lighter);
}

.guide-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
}

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

.guide-card h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
}

.guide-card p {
    color: var(--gray-light);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.guide-link {
    color: var(--primary-light);
    font-weight: 600;
    font-size: 0.9rem;
}

.guide-link:hover {
    color: var(--white);
}

/* ===== SEO Section ===== */
.seo-section {
    padding: 80px 0;
    background: var(--dark);
    border-top: 1px solid var(--dark-lighter);
}

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

.seo-content h2 {
    font-size: 1.75rem;
    margin-bottom: 24px;
    color: var(--white);
}

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

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

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

/* ===== Footer ===== */
.footer {
    background: var(--dark-light);
    padding: 64px 0 32px;
    border-top: 1px solid var(--dark-lighter);
}

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

.footer-brand p {
    color: var(--gray);
    margin-top: 16px;
    font-size: 0.9rem;
}

.footer-links h4 {
    color: var(--white);
    margin-bottom: 20px;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.footer-links a {
    color: var(--gray);
    font-size: 0.9rem;
}

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

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--dark-lighter);
    text-align: center;
}

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

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

/* ===== Modal ===== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
}

.modal-content {
    position: relative;
    background: var(--dark-light);
    border-radius: var(--radius-lg);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--dark-lighter);
}

.modal-header h3 {
    font-size: 1.1rem;
}

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

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

.modal-body {
    padding: 24px;
    max-height: 60vh;
    overflow-y: auto;
}

.modal-product-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.modal-product-item:hover {
    background: var(--dark);
}

.modal-product-icon {
    font-size: 1.5rem;
}

.modal-product-info h4 {
    font-size: 0.95rem;
    margin-bottom: 4px;
}

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

/* ===== 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(1) { animation-delay: 0.1s; }
.product-card:nth-child(2) { animation-delay: 0.15s; }
.product-card:nth-child(3) { animation-delay: 0.2s; }
.product-card:nth-child(4) { animation-delay: 0.25s; }
.product-card:nth-child(5) { animation-delay: 0.3s; }
.product-card:nth-child(6) { animation-delay: 0.35s; }

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--dark-light);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
    }

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

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

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .filter-bar {
        flex-direction: column;
    }

    .filter-group {
        width: 100%;
    }

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

    .quiz-container {
        padding: 24px;
    }

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

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

    .btn {
        width: 100%;
    }

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