/* ===================================
   Design System & CSS Variables
   =================================== */

:root {
    /* Color Palette - Modern & Premium */
    --color-primary: #7f5af0;
    --color-primary-light: #9d7ff5;
    --color-primary-dark: #6842d4;
    --color-secondary: #16c79a;
    --color-accent: #ff6b9d;
    --color-warning: #ffd93d;

    /* Neutral Colors */
    --color-bg-primary: #0a0a0f;
    --color-bg-secondary: #16161d;
    --color-bg-tertiary: #1f1f2e;
    --color-surface: #2a2a3e;
    --color-surface-hover: #353549;

    /* Text Colors */
    --color-text-primary: #ffffff;
    --color-text-secondary: #b8b8d1;
    --color-text-tertiary: #8888a8;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #7f5af0 0%, #ff6b9d 100%);
    --gradient-secondary: linear-gradient(135deg, #16c79a 0%, #7f5af0 100%);
    --gradient-accent: linear-gradient(135deg, #ff6b9d 0%, #ffd93d 100%);
    --gradient-surface: linear-gradient(135deg, #2a2a3e 0%, #1f1f2e 100%);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Space Grotesk', var(--font-primary);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 32px rgba(127, 90, 240, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

/* ===================================
   Reset & Base Styles
   =================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

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

/* ===================================
   Utility Classes
   =================================== */

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

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

/* ===================================
   Navigation
   =================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-icon {
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

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

.nav-link {
    color: var(--color-text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: var(--spacing-xs) 0;
    transition: color var(--transition-base);
}

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

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

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

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-base);
}

/* ===================================
   Hero Section
   =================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl) var(--spacing-lg);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--color-primary);
    top: -200px;
    right: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--color-secondary);
    bottom: -150px;
    left: -150px;
    animation-delay: 5s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: var(--color-accent);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(50px, -50px) scale(1.1);
    }
    66% {
        transform: translate(-50px, 50px) scale(0.9);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(127, 90, 240, 0.1);
    border: 1px solid rgba(127, 90, 240, 0.3);
    border-radius: 100px;
    color: var(--color-primary-light);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease;
}

.badge-icon {
    font-size: 1.2rem;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(1.9rem, 4vw, 3rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-description {
    font-size: clamp(0.9rem, 1.5vw, 1.05rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.8s backwards;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-text-tertiary);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
}

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

/* ===================================
   Buttons
   =================================== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.7rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-text-primary);
    box-shadow: 0 4px 16px rgba(127, 90, 240, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(127, 90, 240, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--color-text-primary);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

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

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

.btn-shop {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: #fff;
    border: none;
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.35);
}

.btn-shop:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(16, 185, 129, 0.5);
    background: linear-gradient(135deg, #34d399 0%, #10b981 100%);
}

/* ===================================
   Sections
   =================================== */

.categories,
.featured-articles {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
}

/* ===================================
   Category Cards
   =================================== */

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.category-card {
    position: relative;
    padding: var(--spacing-xl);
    background: var(--gradient-surface);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.category-card:hover {
    transform: translateY(-8px);
    border-color: rgba(127, 90, 240, 0.3);
    box-shadow: var(--shadow-glow);
}

.category-card:hover::before {
    opacity: 0.05;
}

.category-card > * {
    position: relative;
    z-index: 1;
}

.category-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-base);
}

.keyboards-icon {
    background: linear-gradient(135deg, rgba(127, 90, 240, 0.2), rgba(127, 90, 240, 0.05));
    color: var(--color-primary);
}

.switches-icon {
    background: linear-gradient(135deg, rgba(22, 199, 154, 0.2), rgba(22, 199, 154, 0.05));
    color: var(--color-secondary);
}

.keycaps-icon {
    background: linear-gradient(135deg, rgba(255, 107, 157, 0.2), rgba(255, 107, 157, 0.05));
    color: var(--color-accent);
}

.accessories-icon {
    background: linear-gradient(135deg, rgba(255, 217, 61, 0.2), rgba(255, 217, 61, 0.05));
    color: var(--color-warning);
}

.guides-icon {
    background: linear-gradient(135deg, rgba(127, 90, 240, 0.2), rgba(22, 199, 154, 0.05));
    color: var(--color-primary-light);
}

.reviews-icon {
    background: linear-gradient(135deg, rgba(255, 107, 157, 0.2), rgba(255, 217, 61, 0.05));
    color: var(--color-accent);
}

.category-card:hover .category-icon {
    transform: scale(1.1) rotate(5deg);
}

.category-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.category-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.category-arrow {
    font-size: 1.5rem;
    color: var(--color-primary);
    transition: transform var(--transition-base);
}

.category-card:hover .category-arrow {
    transform: translateX(8px);
}

/* ===================================
   Article Cards
   =================================== */

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.article-card {
    background: var(--color-bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.article-card:hover {
    transform: translateY(-8px);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-lg);
}

.article-card.featured {
    grid-column: span 2;
}

.article-image {
    position: relative;
    width: 100%;
    aspect-ratio: 16/10;
    overflow: hidden;
    background: var(--color-bg-tertiary);
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.article-card:hover .article-image img {
    transform: scale(1.05);
}

.article-badge {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--gradient-primary);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
}

.article-content {
    padding: var(--spacing-lg);
}

.article-meta {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    margin-bottom: var(--spacing-md);
    font-size: 0.85rem;
}

.article-category {
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
    font-weight: 600;
}

.keyboards-cat {
    background: rgba(127, 90, 240, 0.2);
    color: var(--color-primary-light);
}

.switches-cat {
    background: rgba(22, 199, 154, 0.2);
    color: var(--color-secondary);
}

.keycaps-cat {
    background: rgba(255, 107, 157, 0.2);
    color: var(--color-accent);
}

.article-date {
    color: var(--color-text-tertiary);
}

.article-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.article-excerpt {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.article-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-primary);
    font-weight: 600;
    transition: gap var(--transition-base);
}

.article-link:hover {
    gap: var(--spacing-sm);
}

.view-all-container {
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* ===================================
   Newsletter Section
   =================================== */

.newsletter {
    padding: var(--spacing-3xl) 0;
    background: var(--gradient-surface);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.newsletter-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.newsletter-description {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-md);
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-input {
    flex: 1;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 1rem;
    transition: all var(--transition-base);
}

.newsletter-input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.08);
}

.newsletter-input::placeholder {
    color: var(--color-text-tertiary);
}

/* ===================================
   Footer
   =================================== */

.footer {
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    background: var(--color-bg-secondary);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer-tagline {
    color: var(--color-text-secondary);
    max-width: 300px;
}

.footer-links h4 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
}

.footer-links a {
    display: block;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    transition: color var(--transition-base);
}

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

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--color-text-tertiary);
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

.social-links a:hover {
    background: var(--color-primary);
    transform: translateY(-2px);
}

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 1024px) {
    .article-card.featured {
        grid-column: span 1;
    }

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

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

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

    .hero {
        min-height: 80vh;
        padding: var(--spacing-2xl) var(--spacing-md);
    }

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

    .hero-stats {
        gap: var(--spacing-md);
    }

    .stat-divider {
        display: none;
    }

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

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

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

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

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .nav-container {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .category-card {
        padding: var(--spacing-lg);
    }
}