/* ============================================
   TechVernia - Main Stylesheet
   A modern, clean AI-themed design
   ============================================ */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ============================================
   CSS Variables & Theme Configuration
   ============================================ */
:root {
    /* Colors - Dark Theme (Default) */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-card: #15151f;
    --bg-card-hover: #1c1c28;

    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-tertiary: #6b6b7a;
    --text-muted: #4a4a58;

    /* Accent Colors */
    --accent-primary: #00D9FF;
    --accent-secondary: #7C3AED;
    --accent-tertiary: #10B981;
    --accent-warning: #F59E0B;
    --accent-error: #EF4444;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00D9FF 0%, #7C3AED 100%);
    --gradient-secondary: linear-gradient(135deg, #7C3AED 0%, #EC4899 100%);
    --gradient-success: linear-gradient(135deg, #10B981 0%, #00D9FF 100%);
    --gradient-bg: linear-gradient(180deg, #0a0a0f 0%, #12121a 50%, #0a0a0f 100%);

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(0, 217, 255, 0.15);
    --shadow-glow-purple: 0 0 40px rgba(124, 58, 237, 0.15);

    /* Border */
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-hover: rgba(255, 255, 255, 0.15);

    /* 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;
    --space-4xl: 6rem;

    /* Typography */
    --font-sans: 'Space Grotesk', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-ai: 'Space Grotesk', 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;
    --text-5xl: 3.5rem;
    --text-6xl: 4.5rem;

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

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;

    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 300;
    --z-tooltip: 400;
}

/* Light Theme - REMOVED (Site is 100% Dark Mode) */

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    background-image: var(--gradient-bg);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Force Space Grotesk sur tous les éléments de texte */
h1, h2, h3, h4, h5, h6,
p, span, a, button, input, textarea, select,
.btn, .card, .navbar, .footer,
div, section, article, aside {
    font-family: var(--font-sans);
}

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

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

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

ul, ol {
    list-style: none;
}

/* ============================================
   Container & Layout
   ============================================ */
.container {
    width: 100%;
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
}

.section {
    padding: var(--space-4xl) 0;
    position: relative;
}

/* ============================================
   Neural Network Background Canvas
   ============================================ */
#neural-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    opacity: 0.4;
    pointer-events: none;
}

#particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    padding: var(--space-md) 0;
    transition: all var(--transition-normal);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: var(--space-sm) 0;
}

/* Light mode navbar removed */

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

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
}

.logo-image {
    height: 60px !important;
    width: auto !important;
    max-width: none !important;
    object-fit: contain;
    background: transparent !important;
    filter: drop-shadow(0 0 15px rgba(0, 217, 255, 0.4));
    transition: all 0.3s ease;
}

.logo:hover .logo-image {
    filter: drop-shadow(0 0 25px rgba(0, 217, 255, 0.6));
    transform: scale(1.05);
}

/* Logo dans le Hero */
.hero-logo {
    text-align: center;
    margin-bottom: 2rem;
}

.hero-logo-image {
    height: 320px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 0 50px rgba(0, 217, 255, 0.6))
            drop-shadow(0 0 100px rgba(124, 58, 237, 0.4));
    animation: logoFloat 6s ease-in-out infinite;
}

@keyframes logoFloat {
    0%, 100% {
        transform: translateY(0px);
        filter: drop-shadow(0 0 50px rgba(0, 217, 255, 0.6))
                drop-shadow(0 0 100px rgba(124, 58, 237, 0.4));
    }
    50% {
        transform: translateY(-20px);
        filter: drop-shadow(0 0 60px rgba(0, 217, 255, 0.8))
                drop-shadow(0 0 120px rgba(124, 58, 237, 0.6));
    }
}

.logo-icon svg {
    width: 40px;
    height: 40px;
}

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

/* Nav Menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
    padding: var(--space-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

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

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

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

/* Dropdown */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.dropdown-toggle svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.dropdown:hover .dropdown-toggle svg {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    padding-top: var(--space-md);
}

.dropdown:hover .dropdown-menu,
.dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown.active .dropdown-toggle svg {
    transform: rotate(180deg);
}

/* Mega Menu */
.mega-menu {
    width: 1000px;
    max-height: 600px;
    overflow-y: auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    box-shadow: var(--shadow-lg);
}

.mega-menu-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-sm);
}

.mega-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    transition: background var(--transition-fast);
}

.mega-item:hover {
    background: var(--bg-tertiary);
}

.mega-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(15, 15, 25, 0.8);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-fast);
}

.mega-icon svg {
    width: 28px;
    height: 28px;
    stroke-width: 1.5;
    fill: none;
    transition: all var(--transition-fast);
}

.mega-item:hover .mega-icon {
    transform: scale(1.15);
}

.mega-item:hover .mega-icon svg {
    transform: scale(1.1);
    filter: brightness(1.3);
}

.mega-icon::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: var(--radius-lg);
    padding: 1px;
    background: linear-gradient(135deg, var(--icon-color-1, #00D9FF), var(--icon-color-2, #7C3AED));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0.6;
    transition: opacity var(--transition-fast);
}

.mega-item:hover .mega-icon::before {
    opacity: 1;
}

.mega-icon::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, var(--icon-glow, rgba(0, 217, 255, 0.15)) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.mega-item:hover .mega-icon::after {
    opacity: 1;
}

/* Neon Icon Colors - Gaming Computer Style */
.mega-icon.icon-chatbots { --icon-color-1: #00D9FF; --icon-color-2: #0066FF; --icon-glow: rgba(0, 217, 255, 0.2); }
.mega-icon.icon-chatbots svg { stroke: url(#gradient-chatbots-menu); filter: drop-shadow(0 0 8px rgba(0, 217, 255, 0.6)); }

.mega-icon.icon-writing { --icon-color-1: #A855F7; --icon-color-2: #6366F1; --icon-glow: rgba(168, 85, 247, 0.2); }
.mega-icon.icon-writing svg { stroke: url(#gradient-writing-menu); filter: drop-shadow(0 0 8px rgba(168, 85, 247, 0.6)); }

.mega-icon.icon-image { --icon-color-1: #F472B6; --icon-color-2: #EC4899; --icon-glow: rgba(244, 114, 182, 0.2); }
.mega-icon.icon-image svg { stroke: url(#gradient-image-menu); filter: drop-shadow(0 0 8px rgba(244, 114, 182, 0.6)); }

.mega-icon.icon-video { --icon-color-1: #FB923C; --icon-color-2: #F97316; --icon-glow: rgba(251, 146, 60, 0.2); }
.mega-icon.icon-video svg { stroke: url(#gradient-video-menu); filter: drop-shadow(0 0 8px rgba(251, 146, 60, 0.6)); }

.mega-icon.icon-audio { --icon-color-1: #4ADE80; --icon-color-2: #22C55E; --icon-glow: rgba(74, 222, 128, 0.2); }
.mega-icon.icon-audio svg { stroke: url(#gradient-audio-menu); filter: drop-shadow(0 0 8px rgba(74, 222, 128, 0.6)); }

.mega-icon.icon-coding { --icon-color-1: #38BDF8; --icon-color-2: #0EA5E9; --icon-glow: rgba(56, 189, 248, 0.2); }
.mega-icon.icon-coding svg { stroke: url(#gradient-coding-menu); filter: drop-shadow(0 0 8px rgba(56, 189, 248, 0.6)); }

.mega-icon.icon-productivity { --icon-color-1: #FACC15; --icon-color-2: #EAB308; --icon-glow: rgba(250, 204, 21, 0.2); }
.mega-icon.icon-productivity svg { stroke: url(#gradient-productivity-menu); filter: drop-shadow(0 0 8px rgba(250, 204, 21, 0.6)); }

.mega-icon.icon-seo { --icon-color-1: #34D399; --icon-color-2: #10B981; --icon-glow: rgba(52, 211, 153, 0.2); }
.mega-icon.icon-seo svg { stroke: url(#gradient-seo-menu); filter: drop-shadow(0 0 8px rgba(52, 211, 153, 0.6)); }

.mega-icon.icon-business { --icon-color-1: #818CF8; --icon-color-2: #6366F1; --icon-glow: rgba(129, 140, 248, 0.2); }
.mega-icon.icon-business svg { stroke: url(#gradient-business-menu); filter: drop-shadow(0 0 8px rgba(129, 140, 248, 0.6)); }

.mega-icon.icon-networking { --icon-color-1: #2DD4BF; --icon-color-2: #14B8A6; --icon-glow: rgba(45, 212, 191, 0.2); }
.mega-icon.icon-networking svg { stroke: url(#gradient-networking-menu); filter: drop-shadow(0 0 8px rgba(45, 212, 191, 0.6)); }

.mega-icon.icon-cybersecurity { --icon-color-1: #F87171; --icon-color-2: #EF4444; --icon-glow: rgba(248, 113, 113, 0.2); }
.mega-icon.icon-cybersecurity svg { stroke: url(#gradient-cybersecurity-menu); filter: drop-shadow(0 0 8px rgba(248, 113, 113, 0.6)); }

.mega-icon.icon-architecture { --icon-color-1: #0EA5E9; --icon-color-2: #38BDF8; --icon-glow: rgba(14, 165, 233, 0.2); }
.mega-icon.icon-architecture svg { stroke: url(#gradient-architecture-menu); filter: drop-shadow(0 0 8px rgba(14, 165, 233, 0.6)); }

.mega-icon.icon-medical { --icon-color-1: #3B82F6; --icon-color-2: #60A5FA; --icon-glow: rgba(59, 130, 246, 0.2); }
.mega-icon.icon-medical svg { stroke: url(#gradient-medical-menu); filter: drop-shadow(0 0 8px rgba(59, 130, 246, 0.6)); }

.mega-title {
    display: block;
    font-weight: 600;
    font-size: var(--text-sm);
    color: var(--text-primary);
    margin-bottom: 2px;
}

.mega-desc {
    display: block;
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

/* Nav Actions */
.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

/* Language Selector */
.language-selector {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    outline: none;
}

.lang-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.lang-btn .chevron {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.language-selector.active .lang-btn .chevron {
    transform: rotate(180deg);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + var(--space-sm));
    right: 0;
    min-width: 200px;
    max-height: 450px;
    overflow-y: auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-sm);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 1000;
    display: none;
    pointer-events: none;
}

.language-selector.active .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    display: block;
    pointer-events: auto;
}

.lang-option {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.lang-option:hover,
.lang-option.active {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.lang-option.active {
    color: var(--accent-primary);
}

/* Theme Toggle */
.theme-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.sun-icon {
    display: none;
}

/* Light mode theme toggle removed */

/* Search Button */
.search-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.search-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.search-btn svg {
    width: 20px;
    height: 20px;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 24px;
    height: 24px;
    justify-content: center;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

/* ============================================
   Search Modal
   ============================================ */
.search-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-modal);
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 15vh;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
}

.search-modal.active {
    opacity: 1;
    visibility: visible;
}

.search-modal-content {
    width: 100%;
    max-width: 640px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transform: translateY(-20px);
    transition: transform var(--transition-normal);
}

.search-modal.active .search-modal-content {
    transform: translateY(0);
}

.search-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
}

.search-input-wrapper {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.search-icon {
    width: 24px;
    height: 24px;
    color: var(--text-tertiary);
}

.search-input {
    flex: 1;
    background: none;
    border: none;
    font-size: var(--text-lg);
    color: var(--text-primary);
    outline: none;
}

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

.search-kbd {
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

.search-results {
    padding: var(--space-lg);
    max-height: 400px;
    overflow-y: auto;
}

.search-category h4 {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-tertiary);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.search-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.search-tag {
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.search-tag:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4xl) 0;
    padding-top: calc(80px + var(--space-4xl));
    position: relative;
    overflow: hidden;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: rgba(0, 217, 255, 0.1);
    border: 1px solid rgba(0, 217, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--accent-primary);
    margin-bottom: var(--space-xl);
}

.hero-title {
    font-size: clamp(var(--text-4xl), 8vw, var(--text-6xl));
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-xl);
}

.hero-title span {
    display: block;
}

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

.hero-subtitle {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-2xl);
    line-height: 1.7;
}

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

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

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
}

.stat-number::after {
    content: '+';
    color: var(--accent-primary);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    margin-top: var(--space-xs);
}

/* Hero Visual - AI Orb */
.hero-visual {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    width: 500px;
    height: 500px;
    opacity: 0.6;
    pointer-events: none;
}

.ai-orb {
    position: relative;
    width: 100%;
    height: 100%;
}

.orb-core {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    background: var(--gradient-primary);
    border-radius: 50%;
    filter: blur(40px);
    animation: pulse 4s ease-in-out infinite;
}

.orb-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 1px solid rgba(0, 217, 255, 0.3);
    border-radius: 50%;
}

.ring-1 {
    width: 200px;
    height: 200px;
    animation: spin 20s linear infinite;
}

.ring-2 {
    width: 300px;
    height: 300px;
    animation: spin 30s linear infinite reverse;
}

.ring-3 {
    width: 400px;
    height: 400px;
    animation: spin 40s linear infinite;
}

/* Hero Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%);
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-tertiary);
    font-size: var(--text-sm);
}

.scroll-arrow {
    animation: bounce 2s ease-in-out infinite;
}

.scroll-arrow svg {
    width: 24px;
    height: 24px;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn svg {
    width: 18px;
    height: 18px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    box-shadow: 0 4px 15px rgba(0, 217, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 217, 255, 0.4);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-color-hover);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.btn-lg {
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--text-base);
}

/* ============================================
   Section Styles
   ============================================ */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-3xl);
}

.section-badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: rgba(124, 58, 237, 0.1);
    border: 1px solid rgba(124, 58, 237, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--accent-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: clamp(var(--text-2xl), 5vw, var(--text-4xl));
    font-weight: 800;
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    line-height: 1.7;
}

.section-cta {
    text-align: center;
    margin-top: var(--space-3xl);
}

/* ============================================
   Categories Grid
   ============================================ */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.category-card {
    position: relative;
    padding: var(--space-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    transition: all var(--transition-normal);
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

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

.category-card:hover::before {
    transform: scaleX(1);
}

.category-card.featured {
    border-color: rgba(124, 58, 237, 0.3);
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.05) 0%, var(--bg-card) 100%);
}

.category-card.featured::before {
    background: var(--gradient-secondary);
}

.featured-badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    background: var(--gradient-secondary);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    color: white;
}

.category-icon {
    position: relative;
    width: 80px;
    height: 80px;
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(15, 15, 25, 0.8);
    border-radius: var(--radius-xl);
    overflow: visible;
}

/* Neon Icon Gaming Computer Style */
.category-icon.neon-icon {
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-normal);
}

.category-icon.neon-icon svg {
    width: 48px;
    height: 48px;
    stroke-width: 1.5;
    fill: none;
    transition: all var(--transition-normal);
    position: relative;
    z-index: 2;
}

.category-card:hover .category-icon.neon-icon svg {
    transform: scale(1.1);
    filter: brightness(1.3);
}

/* Neon Glow Effect - Gaming Computer Style */
.category-icon.neon-icon::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: var(--radius-xl);
    padding: 1px;
    background: linear-gradient(135deg, var(--icon-color-1, #00D9FF), var(--icon-color-2, #7C3AED));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0.6;
    transition: opacity var(--transition-normal);
}

.category-card:hover .category-icon.neon-icon::before {
    opacity: 1;
}

/* Radial Glow Effect */
.category-icon.neon-icon::after {
    content: '';
    position: absolute;
    inset: -10px;
    background: radial-gradient(circle at center, var(--icon-glow, rgba(0, 217, 255, 0.3)) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-normal);
    border-radius: 50%;
    z-index: 0;
}

.category-card:hover .category-icon.neon-icon::after {
    opacity: 1;
    animation: neonPulse 2s ease-in-out infinite;
}

/* Neon Pulse Animation - Gaming Effect */
@keyframes neonPulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.1);
    }
}

/* Category Icon Colors - Gaming Computer Theme */
.category-icon.neon-icon.icon-chatbots { --icon-color-1: #00D9FF; --icon-color-2: #0066FF; --icon-glow: rgba(0, 217, 255, 0.3); }
.category-icon.neon-icon.icon-chatbots svg { stroke: url(#gradient-chatbots); filter: drop-shadow(0 0 12px rgba(0, 217, 255, 0.8)); }

.category-icon.neon-icon.icon-writing { --icon-color-1: #A855F7; --icon-color-2: #6366F1; --icon-glow: rgba(168, 85, 247, 0.3); }
.category-icon.neon-icon.icon-writing svg { stroke: url(#gradient-writing); filter: drop-shadow(0 0 12px rgba(168, 85, 247, 0.8)); }

.category-icon.neon-icon.icon-image { --icon-color-1: #F472B6; --icon-color-2: #EC4899; --icon-glow: rgba(244, 114, 182, 0.3); }
.category-icon.neon-icon.icon-image svg { stroke: url(#gradient-image); filter: drop-shadow(0 0 12px rgba(244, 114, 182, 0.8)); }

.category-icon.neon-icon.icon-video { --icon-color-1: #FB923C; --icon-color-2: #F97316; --icon-glow: rgba(251, 146, 60, 0.3); }
.category-icon.neon-icon.icon-video svg { stroke: url(#gradient-video); filter: drop-shadow(0 0 12px rgba(251, 146, 60, 0.8)); }

.category-icon.neon-icon.icon-audio { --icon-color-1: #4ADE80; --icon-color-2: #22C55E; --icon-glow: rgba(74, 222, 128, 0.3); }
.category-icon.neon-icon.icon-audio svg { stroke: url(#gradient-audio); filter: drop-shadow(0 0 12px rgba(74, 222, 128, 0.8)); }

.category-icon.neon-icon.icon-coding { --icon-color-1: #38BDF8; --icon-color-2: #0EA5E9; --icon-glow: rgba(56, 189, 248, 0.3); }
.category-icon.neon-icon.icon-coding svg { stroke: url(#gradient-coding); filter: drop-shadow(0 0 12px rgba(56, 189, 248, 0.8)); }

.category-icon.neon-icon.icon-productivity { --icon-color-1: #FACC15; --icon-color-2: #EAB308; --icon-glow: rgba(250, 204, 21, 0.3); }
.category-icon.neon-icon.icon-productivity svg { stroke: url(#gradient-productivity); filter: drop-shadow(0 0 12px rgba(250, 204, 21, 0.8)); }

.category-icon.neon-icon.icon-seo { --icon-color-1: #34D399; --icon-color-2: #10B981; --icon-glow: rgba(52, 211, 153, 0.3); }
.category-icon.neon-icon.icon-seo svg { stroke: url(#gradient-seo); filter: drop-shadow(0 0 12px rgba(52, 211, 153, 0.8)); }

.category-icon.neon-icon.icon-business { --icon-color-1: #818CF8; --icon-color-2: #6366F1; --icon-glow: rgba(129, 140, 248, 0.3); }
.category-icon.neon-icon.icon-business svg { stroke: url(#gradient-business); filter: drop-shadow(0 0 12px rgba(129, 140, 248, 0.8)); }

.category-icon.neon-icon.icon-networking { --icon-color-1: #2DD4BF; --icon-color-2: #14B8A6; --icon-glow: rgba(45, 212, 191, 0.3); }
.category-icon.neon-icon.icon-networking svg { stroke: url(#gradient-networking); filter: drop-shadow(0 0 12px rgba(45, 212, 191, 0.8)); }

.category-icon.neon-icon.icon-cybersecurity { --icon-color-1: #F87171; --icon-color-2: #EF4444; --icon-glow: rgba(248, 113, 113, 0.3); }
.category-icon.neon-icon.icon-cybersecurity svg { stroke: url(#gradient-cybersecurity); filter: drop-shadow(0 0 12px rgba(248, 113, 113, 0.8)); }

/* Country Flags - Discrete Style */
.country-flag {
    font-size: 0.65em;
    opacity: 0.5;
    margin-left: 0.25rem;
    transition: opacity var(--transition-fast);
}

.tool-badge:hover .country-flag {
    opacity: 0.8;
}

.category-title {
    font-size: var(--text-lg);
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.category-desc {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

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

.tool-badge {
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

.category-arrow {
    position: absolute;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: 50%;
    color: var(--text-tertiary);
    transition: all var(--transition-fast);
}

.category-card:hover .category-arrow {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    transform: translateX(5px);
}

.category-arrow svg {
    width: 18px;
    height: 18px;
}

/* ============================================
   Featured Tools Grid
   ============================================ */
.featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
}

.tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    transition: all var(--transition-normal);
    overflow: visible !important;
}

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

.tool-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
}

.tool-logo {
    width: 56px;
    height: 56px;
}

.logo-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-weight: 800;
    font-size: var(--text-lg);
    color: white;
}

.logo-placeholder.chatgpt {
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
}

.logo-placeholder.claude {
    background: linear-gradient(135deg, #D97706 0%, #B45309 100%);
}

.logo-placeholder.midjourney {
    background: linear-gradient(135deg, #7C3AED 0%, #5B21B6 100%);
}

.logo-placeholder.copilot {
    background: linear-gradient(135deg, #0EA5E9 0%, #0284C7 100%);
}

.logo-placeholder.elevenlabs {
    background: linear-gradient(135deg, #EC4899 0%, #BE185D 100%);
}

.logo-placeholder.jasper {
    background: linear-gradient(135deg, #EF4444 0%, #DC2626 100%);
}

.tool-badges {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    align-items: flex-end;
}

.badge {
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
}

.badge-popular {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-tertiary);
}

.badge-new {
    background: rgba(0, 217, 255, 0.1);
    color: var(--accent-primary);
}

.badge-creative {
    background: rgba(124, 58, 237, 0.1);
    color: var(--accent-secondary);
}

.badge-dev {
    background: rgba(14, 165, 233, 0.1);
    color: #0EA5E9;
}

.badge-audio {
    background: rgba(236, 72, 153, 0.1);
    color: #EC4899;
}

.badge-writing {
    background: rgba(239, 68, 68, 0.1);
    color: #EF4444;
}

.badge-rating {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-warning);
}

.tool-name {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.tool-company {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    margin-bottom: var(--space-md);
}

.tool-desc {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-lg);
}

.tool-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.feature {
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    color: var(--text-secondary);
}

.tool-pricing {
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: baseline;
    gap: var(--space-sm);
}

.price-label {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

.price-value {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--accent-primary);
}

.price-period {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

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

.tool-actions .btn {
    flex: 1;
    padding: var(--space-md);
}

/* ============================================
   Comparison Cards
   ============================================ */
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.comparison-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    text-align: center;
    transition: all var(--transition-normal);
}

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

.vs-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.vs-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.vs-logo {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-weight: 800;
    color: white;
}

.vs-logo.chatgpt { background: linear-gradient(135deg, #10B981, #059669); }
.vs-logo.claude { background: linear-gradient(135deg, #D97706, #B45309); }
.vs-logo.midjourney { background: linear-gradient(135deg, #7C3AED, #5B21B6); }
.vs-logo.dalle { background: linear-gradient(135deg, #0EA5E9, #0284C7); }
.vs-logo.copilot { background: linear-gradient(135deg, #0EA5E9, #0284C7); }
.vs-logo.cursor { background: linear-gradient(135deg, #EC4899, #BE185D); }
.vs-logo.jasper { background: linear-gradient(135deg, #EF4444, #DC2626); }
.vs-logo.copyai { background: linear-gradient(135deg, #8B5CF6, #7C3AED); }

.vs-item span:last-child {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-secondary);
}

.vs-badge {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 50%;
    font-weight: 800;
    font-size: var(--text-sm);
    color: var(--bg-primary);
}

.comparison-desc {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

/* ============================================
   Network Engineers Section
   ============================================ */
.neteng-section {
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.05) 0%, transparent 50%);
}

.neteng-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
}

.neteng-text .section-badge {
    background: rgba(124, 58, 237, 0.1);
    border-color: rgba(124, 58, 237, 0.2);
    color: var(--accent-secondary);
}

.neteng-text .section-title {
    text-align: left;
    margin-bottom: var(--space-lg);
}

.section-desc {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
}

.neteng-features {
    margin-bottom: var(--space-xl);
}

.neteng-features li {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.neteng-features svg {
    width: 20px;
    height: 20px;
    color: var(--accent-tertiary);
    flex-shrink: 0;
}

.neteng-cta {
    display: flex;
    gap: var(--space-md);
}

/* Network Diagram Visual */
.neteng-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.network-diagram {
    position: relative;
    width: 300px;
    height: 300px;
}

.node {
    position: absolute;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    font-size: var(--text-lg);
    z-index: 1;
}

.node-core {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    font-weight: 800;
    color: var(--bg-primary);
    border: none;
    box-shadow: var(--shadow-glow);
}

.node-1 { top: 0; left: 50%; transform: translateX(-50%); }
.node-2 { top: 25%; right: 5%; }
.node-3 { bottom: 25%; right: 5%; }
.node-4 { bottom: 0; left: 50%; transform: translateX(-50%); }
.node-5 { bottom: 25%; left: 5%; }

.connections {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.conn-line {
    stroke: var(--border-color);
    stroke-width: 1;
    stroke-dasharray: 5, 5;
    animation: dash 20s linear infinite;
}

/* ============================================
   Guides Section
   ============================================ */
.guides-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.guide-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-normal);
}

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

.guide-card.featured-guide {
    grid-column: span 2;
    display: grid;
    grid-template-columns: 1fr 1.5fr;
}

.guide-image {
    position: relative;
    height: 180px;
}

.featured-guide .guide-image {
    height: 100%;
    min-height: 250px;
}

.guide-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
}

.gradient-1 { background: linear-gradient(135deg, #7C3AED 0%, #EC4899 100%); }
.gradient-2 { background: linear-gradient(135deg, #0EA5E9 0%, #10B981 100%); }
.gradient-3 { background: linear-gradient(135deg, #F59E0B 0%, #EF4444 100%); }
.gradient-4 { background: linear-gradient(135deg, #00D9FF 0%, #7C3AED 100%); }

.guide-category {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    color: white;
}

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

.guide-title {
    font-size: var(--text-lg);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    line-height: 1.3;
}

.guide-excerpt {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.guide-meta {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

.guide-link {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--accent-primary);
    transition: color var(--transition-fast);
}

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

/* ============================================
   Newsletter Section
   ============================================ */
.newsletter-card {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    padding: var(--space-3xl);
    overflow: hidden;
    position: relative;
}

.newsletter-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
}

.newsletter-icon svg {
    width: 64px;
    height: 64px;
    margin-bottom: var(--space-lg);
}

.newsletter-title {
    font-size: var(--text-3xl);
    font-weight: 800;
    margin-bottom: var(--space-md);
}

.newsletter-desc {
    font-size: var(--text-base);
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.7;
}

.newsletter-form .form-group {
    display: flex;
    gap: var(--space-sm);
}

.form-input {
    flex: 1;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--transition-fast);
}

.form-input:focus {
    border-color: var(--accent-primary);
}

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

.form-note {
    margin-top: var(--space-sm);
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

/* Email Animation */
.newsletter-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.email-animation {
    position: relative;
    width: 200px;
    height: 150px;
}

.envelope {
    position: relative;
    width: 100%;
    height: 100%;
}

.envelope-back {
    position: absolute;
    top: 20px;
    left: 0;
    width: 100%;
    height: 120px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
}

.envelope-letter {
    position: absolute;
    top: 0;
    left: 10%;
    width: 80%;
    height: 100px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    animation: letterSlide 3s ease-in-out infinite;
}

.letter-line {
    height: 8px;
    background: var(--border-color);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-sm);
}

.letter-line.short {
    width: 60%;
}

.envelope-front {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-lg);
    clip-path: polygon(0 40%, 50% 0, 100% 40%, 100% 100%, 0 100%);
}

/* ============================================
   Blog Section
   ============================================ */
.blog-section {
    background: var(--bg-primary);
}

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

.blog-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.blog-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
    box-shadow: 0 20px 40px rgba(0, 217, 255, 0.1);
}

.blog-card.blog-featured {
    grid-column: span 2;
    grid-row: span 2;
    display: grid;
    grid-template-columns: 1fr;
}

.blog-featured .blog-image {
    min-height: 250px;
}

.blog-featured .blog-title {
    font-size: var(--text-2xl);
}

.blog-featured .blog-excerpt {
    font-size: var(--text-base);
    -webkit-line-clamp: 4;
}

.blog-image {
    position: relative;
    min-height: 160px;
    overflow: hidden;
}

.blog-placeholder {
    width: 100%;
    height: 100%;
    min-height: inherit;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
}

.blog-placeholder.gradient-ai {
    background: linear-gradient(135deg, #00D9FF 0%, #7C3AED 100%);
}

.blog-placeholder.gradient-money {
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
}

.blog-placeholder.gradient-creative {
    background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
}

.blog-placeholder.gradient-code {
    background: linear-gradient(135deg, #6366F1 0%, #4F46E5 100%);
}

.blog-placeholder.gradient-network {
    background: linear-gradient(135deg, #06B6D4 0%, #0891B2 100%);
}

.blog-placeholder.gradient-voice {
    background: linear-gradient(135deg, #EC4899 0%, #DB2777 100%);
}

.blog-category {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    color: white;
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
}

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

.blog-meta {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

.blog-title {
    font-size: var(--text-lg);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-excerpt {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.blog-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-color);
}

.blog-author {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.author-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xs);
    font-weight: 600;
    color: white;
}

.blog-link {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--accent-primary);
    transition: color var(--transition-fast);
}

.blog-link:hover {
    color: var(--accent-secondary);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-grid, .footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

.footer-logo {
    display: inline-block;
    margin-bottom: var(--space-lg);
}

.footer-logo-image {
    height: 80px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 0 15px rgba(0, 217, 255, 0.3));
    transition: all 0.3s ease;
}

.footer-logo:hover .footer-logo-image {
    filter: drop-shadow(0 0 25px rgba(0, 217, 255, 0.5));
    transform: scale(1.05);
}

.footer-desc {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.social-links {
    display: flex;
    gap: var(--space-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--gradient-primary);
    color: var(--bg-primary);
}

.social-link svg {
    width: 18px;
    height: 18px;
}

.footer-links h4 {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
}

.footer-links ul li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

.affiliate-notice {
    font-size: var(--text-xs);
    color: var(--text-muted);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .hero-visual {
        display: none;
    }

    .neteng-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .neteng-visual {
        order: -1;
    }

    .guide-card.featured-guide {
        grid-column: span 1;
        display: block;
    }

    .featured-guide .guide-image {
        min-height: 180px;
    }

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

    .blog-card.blog-featured {
        grid-column: span 2;
        grid-row: span 1;
    }

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

    .newsletter-visual {
        display: none;
    }

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

@media (max-width: 768px) {
    .logo-image {
        height: 60px !important;
    }

    .navbar {
        padding: var(--space-md) 0;
    }

    .navbar.scrolled {
        padding: var(--space-sm) 0;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--bg-primary);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--space-xl);
        transform: translateX(100%);
        transition: transform var(--transition-normal);
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .menu-toggle {
        display: flex;
        z-index: var(--z-modal);
    }

    .mega-menu {
        position: fixed;
        top: 80px;
        left: var(--space-md);
        right: var(--space-md);
        width: auto;
        transform: none;
    }

    .mega-menu-grid {
        grid-template-columns: 1fr;
    }

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

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

    .hero-cta .btn {
        width: 100%;
    }

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

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

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

    .blog-card.blog-featured {
        grid-column: span 1;
    }

    .blog-featured .blog-title {
        font-size: var(--text-xl);
    }

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

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

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

@media (max-width: 480px) {
    :root {
        --space-lg: 1rem;
        --space-xl: 1.5rem;
        --space-2xl: 2rem;
        --space-3xl: 2.5rem;
        --space-4xl: 3rem;
    }

    .logo-image {
        height: 50px !important;
    }

    .section {
        padding: var(--space-3xl) 0;
    }

    .vs-container {
        flex-direction: column;
        gap: var(--space-md);
    }

    .vs-badge {
        margin: var(--space-md) 0;
    }
}

/* ============================================
   Categories Grid Section
   ============================================ */
.categories-section {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.categories-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
    opacity: 0.3;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.category-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 0;
}

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

.category-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-primary);
    box-shadow: 0 12px 40px rgba(0, 217, 255, 0.2);
}

.category-icon {
    position: relative;
    z-index: 1;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

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

.category-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 4px 12px rgba(0, 217, 255, 0.3));
}

.category-title {
    font-size: var(--font-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    position: relative;
    z-index: 1;
    transition: color 0.3s ease;
}

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

.category-desc {
    font-size: var(--font-sm);
    color: var(--text-secondary);
    margin: 0;
    position: relative;
    z-index: 1;
}

.category-arrow {
    font-size: var(--font-xl);
    color: var(--accent-primary);
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
}

.category-card:hover .category-arrow {
    opacity: 1;
    transform: translateX(0);
}

/* Responsive adjustments */
@media (max-width: 1200px) {
    .categories-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .categories-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: var(--space-md);
    }

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

@media (max-width: 480px) {
    .categories-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.hidden { display: none !important; }
.visible { display: block !important; }

/* Print Styles */
@media print {
    .navbar,
    .hero-visual,
    .newsletter-section,
    #neural-bg,
    #particles-container {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }
}