/* ============================================
   CSS VARIABLES - Dark Theme with AI Accents
   ============================================ */

:root {
    /* Dark Base Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a24;
    --bg-card: rgba(26, 26, 36, 0.8);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.8);
    --text-tertiary: rgba(255, 255, 255, 0.6);
    
    /* Accent Colors - Electric Blue, Cyan, Violet */
    --accent-blue: #3b82f6;
    --accent-cyan: #06b6d4;
    --accent-violet: #8b5cf6;
    --accent-purple: #a855f7;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --gradient-violet: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
    --gradient-cyan: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.3);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-secondary: 'Space Grotesk', sans-serif;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Light Theme Variables */
[data-theme="light"] {
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f3f5;
    --bg-card: rgba(255, 255, 255, 0.9);
    
    --text-primary: #1a1a24;
    --text-secondary: rgba(26, 26, 36, 0.8);
    --text-tertiary: rgba(26, 26, 36, 0.6);
    
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(0, 0, 0, 0.1);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.25);
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

/* ============================================
   NAVIGATION
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 0;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.25rem;
    transition: transform var(--transition-base);
}

.nav-logo:hover {
    transform: scale(1.05);
}

.logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.logo-text {
    font-family: var(--font-secondary);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition-base);
    position: relative;
    padding: 0.5rem 0;
}

.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(--text-primary);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 3px;
    transition: all var(--transition-base);
}

.theme-toggle {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.theme-toggle:hover {
    background: var(--accent-blue);
    transform: rotate(20deg);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-card);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--spacing-md);
        gap: 1rem;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
        border-bottom: 1px solid var(--glass-border);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(80px + var(--spacing-xl)) var(--spacing-md) var(--spacing-xl);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
    background: radial-gradient(ellipse at top, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
                radial-gradient(ellipse at bottom right, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
}

.hero-background canvas {
    width: 100%;
    height: 100%;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent-cyan);
    margin-bottom: var(--spacing-md);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    font-family: var(--font-secondary);
}

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

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
}

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

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

.stat-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin-top: 0.5rem;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-tertiary);
    font-size: 0.875rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    font-family: var(--font-primary);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

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

.btn-secondary {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--accent-cyan);
    border-color: var(--accent-cyan);
    transform: translateY(-2px);
}

.btn-tertiary {
    background: transparent;
    border: 2px solid var(--accent-violet);
    color: var(--accent-violet);
}

.btn-tertiary:hover {
    background: var(--accent-violet);
    color: white;
    transform: translateY(-2px);
}

/* ============================================
   SECTIONS
   ============================================ */

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

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.section-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent-cyan);
    margin-bottom: var(--spacing-sm);
}

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

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* ============================================
   LEARNING PATHS
   ============================================ */

.paths-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.path-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.path-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

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

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

.path-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin-bottom: var(--spacing-sm);
}

.path-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--glass-bg);
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-cyan);
    margin-bottom: var(--spacing-sm);
}

.path-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.path-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.path-topics {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.path-topics li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.path-topics li i {
    color: var(--accent-cyan);
}

.path-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.path-meta span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-path {
    width: 100%;
    justify-content: center;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
}

.btn-path:hover {
    background: var(--gradient-primary);
    border-color: transparent;
}

/* ============================================
   MODULES
   ============================================ */

.modules-level-section {
    margin-bottom: var(--spacing-xl);
}

.modules-level-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-primary);
}

.modules-level-title i {
    color: var(--accent-cyan);
    font-size: 1.5rem;
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.module-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
}

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

.module-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.module-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-secondary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
}

.module-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.module-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.module-links {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.module-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: all var(--transition-base);
}

.module-link:hover {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: white;
    transform: translateY(-2px);
}

.module-expand {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem;
    background: transparent;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.875rem;
    transition: all var(--transition-base);
}

.module-expand:hover {
    background: var(--glass-bg);
    color: var(--text-primary);
}

.module-expand[aria-expanded="true"] i {
    transform: rotate(180deg);
}

.module-details {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
    margin-top: var(--spacing-sm);
    color: var(--text-secondary);
    line-height: 1.7;
}

.module-expand[aria-expanded="true"] + .module-details {
    max-height: 200px;
    padding-top: var(--spacing-sm);
}

/* ============================================
   PROJECTS
   ============================================ */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

.project-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.project-image {
    width: 100%;
    height: 200px;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-placeholder {
    font-size: 3rem;
    color: var(--text-tertiary);
}

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

.project-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--glass-bg);
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-cyan);
    margin-bottom: var(--spacing-sm);
}

.project-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.project-tech {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.project-details {
    margin-top: var(--spacing-md);
}

.project-details-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-cyan);
    margin-bottom: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.project-details-title:first-child {
    margin-top: 0;
}

.project-details-text {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.tech-tag {
    padding: 0.25rem 0.75rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.project-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-project,
.btn-demo {
    flex: 1;
    justify-content: center;
    padding: 0.75rem;
    font-size: 0.875rem;
}

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

/* ============================================
   CASE STUDIES
   ============================================ */

.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

/* Reuse project-card styles for case study cards */

/* ============================================
   BLOG / INSIGHTS
   ============================================ */

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

.blog-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.blog-image {
    width: 100%;
    height: 200px;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.blog-placeholder {
    font-size: 3rem;
    color: var(--text-tertiary);
}

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

.blog-meta {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

.blog-tag {
    padding: 0.25rem 0.75rem;
    background: var(--glass-bg);
    border-radius: 6px;
    color: var(--accent-cyan);
    font-weight: 500;
}

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

.blog-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.blog-excerpt {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.blog-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-cyan);
    text-decoration: none;
    font-weight: 500;
    transition: gap var(--transition-base);
}

.blog-link:hover {
    gap: 1rem;
}

/* ============================================
   RESOURCES & GLOSSARY
   ============================================ */

.resources-layout {
    max-width: 1200px;
    margin: 0 auto;
}

.resources-content {
    width: 100%;
}

.resources-grid {
    display: grid;
    gap: var(--spacing-md);
}

.resource-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
}

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

.resource-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    margin-bottom: var(--spacing-sm);
}

.resource-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.resource-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.resource-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-cyan);
    text-decoration: none;
    font-weight: 500;
}

.glossary-content {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: var(--spacing-lg);
}

.glossary-header {
    margin-bottom: var(--spacing-md);
}

.glossary-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.glossary-search {
    position: relative;
}

.glossary-search input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.glossary-search i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
}

.glossary-list {
    max-height: 500px;
    overflow-y: auto;
    margin-top: var(--spacing-md);
}

.glossary-item {
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--glass-border);
    transition: background var(--transition-base);
    cursor: pointer;
}

.glossary-item:hover {
    background: var(--glass-bg);
}

.glossary-term {
    font-weight: 600;
    color: var(--text-primary);
}

.glossary-definition {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* ============================================
   ABOUT
   ============================================ */

.about-layout {
    max-width: 1000px;
    margin: 0 auto;
}

.about-text {
    margin-bottom: var(--spacing-lg);
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

.founder-section {
    display: flex;
    gap: var(--spacing-lg);
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.founder-avatar {
    flex-shrink: 0;
}

.avatar-placeholder {
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
}

.founder-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.founder-role {
    color: var(--accent-cyan);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.founder-bio {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
}

.founder-social {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: white;
    transform: translateY(-2px);
}

.achievements {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: var(--spacing-lg);
}

.achievements h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.achievements-list {
    list-style: none;
}

.achievements-list li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.achievements-list li i {
    color: var(--accent-cyan);
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background: var(--bg-tertiary);
    border-top: 1px solid var(--glass-border);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    margin-top: var(--spacing-xl);
}

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

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.footer-logo {
    width: 50px;
    height: 50px;
    margin-bottom: var(--spacing-sm);
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.footer-column h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 0.5rem;
}

.footer-column ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-base);
}

.footer-column ul li a:hover {
    color: var(--accent-cyan);
}

.footer-newsletter h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.footer-newsletter p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

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

.newsletter-form input {
    flex: 1;
    padding: 0.75rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.newsletter-form .btn {
    padding: 0.75rem 1.5rem;
}

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.footer-disclaimer p,
.footer-credits p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.footer-disclaimer strong,
.footer-credits strong {
    color: var(--text-primary);
}

/* ============================================
   AI ASSISTANT
   ============================================ */

.ai-assistant-btn {
    position: fixed;
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    z-index: 999;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.ai-assistant-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(59, 130, 246, 0.5);
}

.ai-pulse {
    position: absolute;
    width: 60px;
    height: 60px;
    border: 2px solid var(--accent-cyan);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

.ai-assistant-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
}

.ai-assistant-modal.active {
    display: flex;
}

.assistant-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
}

.assistant-content {
    position: relative;
    width: 90%;
    max-width: 500px;
    height: 70vh;
    max-height: 700px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    margin: auto;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-xl);
}

.assistant-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--glass-border);
}

.assistant-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.assistant-title i {
    color: var(--accent-cyan);
    font-size: 1.5rem;
}

.assistant-title h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.assistant-close {
    width: 36px;
    height: 36px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.assistant-close:hover {
    background: var(--accent-blue);
    transform: rotate(90deg);
}

.assistant-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.message {
    display: flex;
    gap: var(--spacing-sm);
    animation: fadeIn 0.3s ease;
}

.message-avatar {
    width: 36px;
    height: 36px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: white;
}

.user-message {
    flex-direction: row-reverse;
}

.user-message .message-avatar {
    background: var(--gradient-secondary);
}

.message-content {
    max-width: 70%;
    padding: 0.75rem 1rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--text-primary);
    line-height: 1.6;
}

.user-message .message-content {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
}

.assistant-input {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-top: 1px solid var(--glass-border);
}

.assistant-input input {
    flex: 1;
    padding: 0.75rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.assistant-input button {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.assistant-input button:hover {
    transform: scale(1.1);
}

/* ============================================
   MODAL (Case Studies)
   ============================================ */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
}

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

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    max-width: 900px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    z-index: 10001;
    box-shadow: var(--shadow-xl);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    z-index: 10002;
}

.modal-close:hover {
    background: var(--accent-blue);
    transform: rotate(90deg);
}

.modal-body {
    padding: var(--spacing-xl);
}

.modal-header {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--glass-border);
}

.modal-category {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--gradient-primary);
    color: white;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.modal-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.modal-title i {
    font-size: 2rem;
    color: var(--accent-cyan);
}

.modal-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-top: var(--spacing-sm);
}

.modal-section {
    margin-bottom: var(--spacing-lg);
}

.modal-section h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.modal-section h3 i {
    color: var(--accent-cyan);
    font-size: 1.25rem;
}

.modal-section p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.modal-list {
    list-style: none;
    padding: 0;
}

.modal-list li {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    background: var(--glass-bg);
    border-left: 4px solid var(--accent-blue);
    border-radius: 8px;
    color: var(--text-secondary);
    line-height: 1.7;
    transition: all var(--transition-base);
}

.modal-list li:hover {
    background: rgba(59, 130, 246, 0.1);
    transform: translateX(5px);
}

.modal-list li::before {
    content: "✓";
    color: var(--accent-cyan);
    font-weight: bold;
    margin-right: var(--spacing-sm);
}

.modal-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.modal-tag {
    padding: 0.5rem 1rem;
    background: var(--gradient-primary);
    color: white;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.example-highlight {
    background: var(--glass-bg);
    padding: var(--spacing-md);
    border-radius: 12px;
    border-left: 4px solid var(--accent-blue);
    margin: var(--spacing-sm) 0;
}

.example-highlight p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin: 0;
}

.example-highlight strong {
    color: var(--accent-cyan);
}

@media (max-width: 768px) {
    .modal-title {
        font-size: 1.5rem;
        flex-direction: column;
        align-items: flex-start;
    }
    
    .modal-title i {
        font-size: 1.5rem;
    }
    
    .modal-section h3 {
        font-size: 1.25rem;
    }
    
    .modal-list li {
        padding: var(--spacing-sm);
        font-size: 0.9rem;
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* ============================================
   RESPONSIVE
   ============================================ */

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

@media (max-width: 768px) {
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-stats {
        gap: var(--spacing-md);
    }
    
    .paths-grid,
    .modules-grid,
    .projects-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .founder-section {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-md: 1.5rem;
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
}