/* ===== CSS Variables ===== */
:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --dark-bg: #0f172a;
    --darker-bg: #020617;
    --light-bg: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --code-bg: #1e293b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --sidebar-width: 280px;
    --navbar-height: 70px;
    --transition: all 0.3s ease;
}

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

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

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

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background: linear-gradient(135deg, var(--darker-bg) 0%, var(--dark-bg) 100%);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: 100%;
    height: 100%;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-brand i {
    font-size: 1.75rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.5rem;
}

.nav-link {
    padding: 0.5rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 0.5rem;
    transition: var(--transition);
    font-weight: 500;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* ===== Sidebar ===== */
.sidebar {
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    width: var(--sidebar-width);
    height: calc(100vh - var(--navbar-height));
    background: var(--darker-bg);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    z-index: 900;
    padding: 1.5rem;
}

.sidebar-header {
    margin-bottom: 1.5rem;
}

.sidebar-header h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.search-box {
    position: relative;
    margin-bottom: 1.5rem;
}

.search-box input {
    width: 100%;
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    background: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.search-box i {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.sidebar-menu {
    list-style: none;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 0.5rem;
    transition: var(--transition);
    margin-bottom: 0.25rem;
}

.sidebar-link:hover,
.sidebar-link.active {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
}

.sidebar-link i {
    font-size: 1.1rem;
}

.submenu {
    list-style: none;
    margin-left: 2rem;
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
}

.submenu li {
    margin-bottom: 0.25rem;
}

.submenu a {
    display: block;
    padding: 0.5rem 1rem;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 0.5rem;
    font-size: 0.9rem;
    transition: var(--transition);
}

.submenu a:hover {
    color: var(--text-primary);
    background: rgba(99, 102, 241, 0.05);
}

/* ===== Main Content ===== */
.main-content {
    margin-left: var(--sidebar-width);
    margin-top: var(--navbar-height);
    padding: 2rem;
    min-height: calc(100vh - var(--navbar-height));
}

/* ===== Hero Section ===== */
.hero-section {
    padding: 4rem 2rem;
    text-align: center;
    background: linear-gradient(135deg, var(--darker-bg) 0%, var(--dark-bg) 50%, var(--darker-bg) 100%);
    border-radius: 1rem;
    margin-bottom: 3rem;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 70% 50%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 3rem;
}

.btn {
    padding: 0.875rem 2rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
}

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

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

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* ===== Features Section ===== */
.features-section {
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--light-bg);
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon i {
    font-size: 1.75rem;
    color: white;
}

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

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

.feature-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

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

/* ===== Content Sections ===== */
.content-section {
    background: var(--light-bg);
    padding: 3rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    margin-bottom: 3rem;
}

.content-section h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

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

.content-section h4 {
    font-size: 1.25rem;
    margin: 1.5rem 0 1rem;
    color: var(--text-secondary);
}

.content-section p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.content-section ul,
.content-section ol {
    margin: 1rem 0 1rem 2rem;
    color: var(--text-secondary);
}

.content-section li {
    margin-bottom: 0.5rem;
}

.content-section pre {
    background: var(--code-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1.5rem;
    overflow-x: auto;
    margin: 1.5rem 0;
}

.content-section code {
    font-family: 'Fira Code', 'Courier New', monospace;
    font-size: 0.9rem;
}

.content-section pre code {
    background: none;
    padding: 0;
}

.content-section :not(pre) > code {
    background: var(--code-bg);
    padding: 0.2rem 0.5rem;
    border-radius: 0.25rem;
    color: var(--accent-color);
}

.content-section table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
}

.content-section th,
.content-section td {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    text-align: left;
}

.content-section th {
    background: var(--code-bg);
    font-weight: 600;
    color: var(--primary-color);
}

.content-section td {
    color: var(--text-secondary);
}

/* ===== Quick Start Timeline ===== */
.quickstart-section {
    margin-bottom: 4rem;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    padding-left: 80px;
    margin-bottom: 3rem;
}

.timeline-marker {
    position: absolute;
    left: 0;
    top: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    border: 4px solid var(--dark-bg);
}

.timeline-content {
    background: var(--light-bg);
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
}

.timeline-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.timeline-content p {
    color: var(--text-muted);
    margin-bottom: 1rem;
}

/* ===== Footer ===== */
.footer {
    background: var(--darker-bg);
    border-top: 1px solid var(--border-color);
    padding: 3rem 2rem 1rem;
    margin-left: var(--sidebar-width);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-section p {
    color: var(--text-muted);
    margin-bottom: 1rem;
}

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

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

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--light-bg);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-color);
    color: white;
}

.disclaimer-text {
    font-size: 0.85rem;
    margin-top: 1rem;
    padding: 0.5rem;
    background: rgba(239, 68, 68, 0.1);
    border-left: 3px solid var(--danger-color);
    color: var(--text-muted);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
}

/* ===== Scroll to Top Button ===== */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: 0.5rem;
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        transition: var(--transition);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content,
    .footer {
        margin-left: 0;
    }
    
    .mobile-toggle {
        display: block;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .main-content {
        padding: 1rem;
    }
    
    .content-section {
        padding: 1.5rem;
    }
}

/* ===== Syntax Highlighting Customization ===== */
.hljs {
    background: var(--code-bg) !important;
    padding: 1.5rem !important;
    border-radius: 0.5rem;
}

/* ===== Scrollbar Styling ===== */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* ===== Logo Styling ===== */
.brand-logo {
    height: 40px;
    width: auto;
    object-fit: contain;
    margin-right: 0.5rem;
}

.hero-logo {
    height: 300px;
    width: auto;
    object-fit: contain;
    margin-bottom: 0.1rem;
}

/* Responsive logo sizing */
@media (max-width: 768px) {
    .brand-logo {
        height: 30px;
    }
    
    .hero-logo {
        height: 80px;
    }
}