/* CSS Variables for Dark/Nude Theme */
:root {
    --primary-bg: #0f1419;
    --secondary-bg: #1a1f2e;
    --card-bg: #252a3a;
    --accent-color: #64ffda;
    --accent-secondary: #bb86fc;
    --text-primary: #e1e5f2;
    --text-secondary: #8892b0;
    --text-muted: #606a86;
    --border-color: #2d3748;
    --hover-color: #2a3441;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #64ffda 0%, #bb86fc 100%);
    --shadow-light: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 8px 25px rgba(0, 0, 0, 0.15);
    --shadow-heavy: 0 20px 40px rgba(0, 0, 0, 0.3);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Container */
.container {
    min-height: 100vh;
    position: relative;
}

/* Navigation */
.nav {
    position: sticky;
    top: 0;
    background: rgba(15, 20, 25, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    z-index: 1000;
    animation: slideDown 0.6s ease-out;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: var(--transition);
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 80%;
}

/* Hero Section */
.hero-section {
    padding: 8rem 2rem 4rem;
    text-align: center;
    background: radial-gradient(ellipse at center, rgba(100, 255, 218, 0.1) 0%, transparent 70%);
    position: relative;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23334155" stroke-width="0.5" opacity="0.3"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 3rem;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
    animation: fadeInUp 0.8s ease-out;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Roadmap Section */
.roadmap-section {
    padding: 6rem 2rem;
    background: var(--secondary-bg);
    position: relative;
}

.roadmap-container {
    max-width: 1400px;
    margin: 0 auto;
    background: var(--card-bg);
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    border: 1px solid var(--border-color);
    animation: fadeInScale 0.8s ease-out 0.3s both;
}

.mermaid {
    background: transparent !important;
}

/* Sections Grid */
.sections-grid {
    padding: 6rem 2rem;
}

.grid-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    animation: fadeIn 0.8s ease-out 0.4s both;
}

.section-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    transform: translateY(20px);
    opacity: 0;
    animation: slideInUp 0.6s ease-out forwards;
}

.section-card:nth-child(1) { animation-delay: 0.1s; }
.section-card:nth-child(2) { animation-delay: 0.2s; }
.section-card:nth-child(3) { animation-delay: 0.3s; }
.section-card:nth-child(4) { animation-delay: 0.4s; }
.section-card:nth-child(5) { animation-delay: 0.5s; }
.section-card:nth-child(6) { animation-delay: 0.6s; }
.section-card:nth-child(7) { animation-delay: 0.7s; }
.section-card:nth-child(8) { animation-delay: 0.8s; }
.section-card:nth-child(9) { animation-delay: 0.9s; }
.section-card:nth-child(10) { animation-delay: 1.0s; }
.section-card:nth-child(11) { animation-delay: 1.1s; }
.section-card:nth-child(12) { animation-delay: 1.2s; }
.section-card:nth-child(13) { animation-delay: 1.3s; }

.section-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(100, 255, 218, 0.1), transparent);
    transition: var(--transition);
}

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

.section-card:hover::before {
    left: 100%;
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
    transition: var(--transition);
}

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

.section-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.card-arrow {
    position: absolute;
    bottom: 1.5rem;
    right: 1.5rem;
    font-size: 1.5rem;
    color: var(--accent-color);
    transition: var(--transition);
}

.section-card:hover .card-arrow {
    transform: translateX(5px);
}

/* Content Sections (for individual pages) */
.content-section {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

/* Content Styling */
.content h2 {
    font-size: 2rem;
    margin: 3rem 0 1.5rem;
    color: var(--accent-color);
    position: relative;
    padding-left: 1rem;
}

.content h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 60%;
    background: var(--accent-color);
    border-radius: 2px;
}

.content h3 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
    color: var(--accent-secondary);
}

.content p {
    margin-bottom: 1.5rem;
    line-height: 1.7;
    color: var(--text-primary);
}

.content ul, .content ol {
    margin: 1.5rem 0;
    padding-left: 2rem;
}

.content li {
    margin: 0.5rem 0;
    color: var(--text-primary);
}

.content strong {
    color: var(--accent-color);
    font-weight: 600;
}

/* Code Blocks */
.terminal-box, pre, code {
    background: #000;
    color: #00ff00;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin: 1.5rem 0;
    border: 1px solid #333;
    box-shadow: var(--shadow-medium);
    position: relative;
    font-family: 'Fira Code', 'Monaco', 'Cascadia Code', monospace;
    overflow-x: auto;
}

.terminal-box::before {
    content: '$ ';
    color: var(--accent-color);
    font-weight: bold;
}

.terminal-box.multi-line::before {
    content: '';
}

/* Inline code */
:not(pre) > code {
    background: var(--hover-color);
    color: var(--accent-color);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9em;
    margin: 0;
    border: none;
    box-shadow: none;
}

/* Links */
a {
    color: var(--accent-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--accent-secondary);
    text-decoration: underline;
}

/* Info Boxes */
.info-box {
    background: rgba(100, 255, 218, 0.1);
    border-left: 4px solid var(--accent-color);
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.warning-box {
    background: rgba(255, 193, 7, 0.1);
    border-left: 4px solid #ffc107;
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.danger-box {
    background: rgba(220, 53, 69, 0.1);
    border-left: 4px solid #dc3545;
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

/* Tools and Resources */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.tool-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.tool-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.tool-name {
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.tool-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Footer */
.footer {
    background: var(--secondary-bg);
    padding: 3rem 2rem 1rem;
    text-align: center;
    border-top: 1px solid var(--border-color);
    margin-top: 4rem;
}

.footer-content p {
    color: var(--text-muted);
    margin: 0.5rem 0;
}

.disclaimer {
    color: #ffc107 !important;
    font-weight: 500;
}

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

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

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

@keyframes slideDown {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--gradient-accent);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: var(--shadow-medium);
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-heavy);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .hero-section {
        padding: 4rem 1rem 2rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links {
        gap: 1rem;
    }
    
    .roadmap-container {
        padding: 1.5rem;
    }
    
    .grid-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }
    
    .sections-grid {
        padding: 4rem 1rem;
    }
    
    .section-card {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .content-section {
        padding: 1rem;
    }
    
    .terminal-box, pre, code {
        padding: 1rem;
        font-size: 0.9rem;
    }
}

/* Loading Animation */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease-out;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Page Transitions */
.page-transition {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}

.page-transition.active {
    opacity: 1;
    transform: translateY(0);
}

/* Syntax Highlighting for Code */
.hljs {
    background: #000 !important;
    color: #00ff00 !important;
}

.hljs-comment { color: #666; }
.hljs-keyword { color: #ff6b6b; }
.hljs-string { color: #4ecdc4; }
.hljs-number { color: #ffe66d; }
.hljs-built_in { color: #a8e6cf; }

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--secondary-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-secondary);
}

/* Mermaid Diagram Styling */
.mermaid {
    filter: invert(1) hue-rotate(180deg);
}

/* Print Styles */
@media print {
    .nav, .footer, .back-to-top {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .section-card {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}