@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Raleway:wght@300;400;500;600;700&family=Space+Mono:wght@400;700&display=swap');

:root {
    /* --- 🎨 COLOR SYSTEM --- */
    /* Primary Colors: Sovereign Obsidian & Electric Cyan */
    --color-brand-primary: #00F2FF;
    --color-brand-primary-glow: rgba(0, 242, 255, 0.15);
    --color-brand-secondary: #7000FF;
    --color-brand-secondary-glow: rgba(112, 0, 255, 0.2);
    
    /* Semantic Colors */
    --color-success: #00FF88;
    --color-warning: #FFD600;
    --color-error: #FF0055;
    --color-info: #00A3FF;
    
    /* Neutral Palette (Grayscale) */
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;
    --gray-950: #050510;
    --absolute-black: #000000;

    /* --- 🧱 TYPOGRAPHY SYSTEM --- */
    --font-primary: 'Raleway', sans-serif;
    --font-secondary: 'Raleway', sans-serif;
    --font-mono: 'Space Mono', monospace;

    /* Font Scale */
    --text-xs: 0.75rem;
    --text-sm: 0.85rem;
    --text-base: 1rem;
    --text-lg: 1.15rem;
    --text-xl: 1.5rem;
    --text-2xl: 2rem;
    --text-3xl: 2.75rem;
    --text-4xl: 3.5rem;
    --text-hero: 4.5rem;

    /* Line Heights */
    --lh-tight: 1.1;
    --lh-snug: 1.3;
    --lh-normal: 1.6;
    --lh-relaxed: 1.8;

    /* --- 📏 SPACING SYSTEM (4px Base) --- */
    --s-1: 4px;
    --s-2: 8px;
    --s-3: 12px;
    --s-4: 16px;
    --s-6: 24px;
    --s-8: 32px;
    --s-12: 48px;
    --s-16: 64px;

    /* --- ❄️ GLASSMORPHISM & SURFACES --- */
    --glass-blur: blur(20px);
    --glass-bg: rgba(255, 255, 255, 0.03);
    --card-bg: rgba(15, 15, 25, 0.6);
    --border-main: rgba(255, 255, 255, 0.08);
    --border-bright: rgba(255, 255, 255, 0.15);

    /* --- 🌀 TRANSITIONS & ANIMATIONS --- */
    --t-smooth: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    --t-fast: all 0.2s ease;

    /* Layout */
    --nav-h: 80px;
    --container-max: 1200px;
}

/* Accessibility: WCAG AA Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
        scroll-behavior: auto !important;
    }
}

/* Reset & Base Setup */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

html {
    scroll-behavior: smooth;
    font-size: 18px;
}

body {
    background-color: var(--absolute-black);
    color: var(--gray-50);
    font-family: var(--font-secondary);
    font-weight: 300;
    line-height: var(--lh-normal);
    overflow-x: hidden;
    min-height: 100vh;
    background-image: 
        linear-gradient(to bottom, var(--absolute-black) 0%, var(--gray-950) 100%),
        radial-gradient(circle at 0% 0%, var(--color-brand-secondary-glow) 0%, transparent 40%),
        radial-gradient(circle at 100% 100%, var(--color-brand-primary-glow) 0%, transparent 40%);
}

p, li, .granular-p {
    font-weight: 300;
    font-size: 1.05rem;
    line-height: var(--lh-relaxed);
}

.text-muted {
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--gray-500);
}

/* Headlines */
h1, h2, h3, h4, .font-header {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: var(--lh-tight);
    color: var(--gray-50);
}

h1 { font-size: var(--text-4xl); margin-bottom: var(--s-6); }
h2 { font-size: var(--text-2xl); margin-bottom: var(--s-4); }
h3 { font-size: var(--text-xl); margin-bottom: var(--s-3); }
h4 { font-size: var(--text-lg); margin-bottom: var(--s-2); }

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

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    height: var(--nav-h);
    z-index: 1000;
    background: rgba(5, 5, 16, 0.7);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-main);
    display: flex;
    align-items: center;
}

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

.logo img {
    height: 40px;
    filter: drop-shadow(0 0 10px var(--color-brand-primary-glow));
    transition: var(--t-smooth);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-400);
    transition: var(--t-smooth);
}

.nav-links a:hover, .nav-links a.active {
    color: var(--color-brand-primary);
}

.btn-outline {
    border: 1px solid var(--border-bright);
    padding: 0.7rem 1.5rem;
    border-radius: 100px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.btn-outline:hover {
    border-color: var(--color-brand-primary);
    background: var(--color-brand-primary-glow);
    color: var(--color-brand-primary);
}

/* Form Elements */
input, select, textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: var(--bg-card);
    border: 1px solid var(--border-main);
    border-radius: var(--space-2);
    color: var(--text-primary);
    font-family: var(--font-secondary);
    transition: var(--transition-smooth);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--color-brand-primary);
    box-shadow: 0 0 0 2px var(--color-brand-primary-glow);
}

label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Hero Section */
.hero {
    padding: 12rem 0 10rem;
    text-align: center;
    position: relative;
    background: radial-gradient(circle at 50% 30%, rgba(0, 242, 255, 0.05) 0%, transparent 50%);
}

.hero-logo-container {
    margin-bottom: 3.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-logo-main {
    max-height: 280px;
    width: auto;
    filter: drop-shadow(0 0 60px rgba(0, 242, 255, 0.1));
    transition: var(--transition-smooth);
}

.hero-logo-main:hover {
    transform: scale(1.02);
    filter: drop-shadow(0 0 60px var(--color-brand-primary-glow));
}

.hero-orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 800px;
    height: 800px;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, var(--color-brand-secondary-glow) 0%, transparent 70%);
    z-index: -1;
    opacity: 0.5;
}

.hero h1 {
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 2rem;
    font-weight: 700;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto 3rem;
    font-weight: 300;
}

/* Cards & Containers */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 4rem;
}

.feature-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-main);
    padding: 3rem;
    border-radius: 24px;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    border-color: var(--color-brand-primary);
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: var(--grad-surface);
    opacity: 0;
    transition: var(--transition-smooth);
}

.feature-card:hover::before {
    opacity: 1;
}

/* Loading States */
.skeleton {
    background: linear-gradient(90deg, var(--bg-card) 25%, var(--border-main) 50%, var(--bg-card) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 4px;
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Blog & Editorial UI */
.blog-hero {
    padding: 15rem 0 8rem;
    text-align: left;
    border-bottom: 1px solid var(--border-main);
}

.blog-featured-card {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 6rem;
    align-items: center;
}

.category-tag {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: var(--color-brand-primary-glow);
    color: var(--color-brand-primary);
    border: 1px solid rgba(0, 242, 255, 0.2);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
}

.blog-grid-modern {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 3rem;
    margin: 6rem 0;
}

.blog-card-v2 {
    background: var(--bg-card);
    border: 1px solid var(--border-main);
    border-radius: 24px;
    padding: 2.5rem;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    height: 100%;
    cursor: pointer;
}

.blog-card-v2:hover {
    border-color: var(--color-brand-primary);
    transform: translateY(-8px);
    background: rgba(0, 242, 255, 0.02);
}

.blog-card-v2 h3 {
    font-size: 1.8rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.blog-card-v2 p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 2rem;
    flex-grow: 1;
}

/* Article Reading Experience */
.article-header {
    max-width: 850px;
    margin: 0 auto;
    padding: 15rem 2rem 6rem;
    text-align: center;
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 2rem 10rem;
    font-size: 1.15rem;
    line-height: 1.9;
    color: var(--text-secondary);
}

.article-content h2, .article-content h3 {
    color: #fff;
    margin-top: 4rem;
    margin-bottom: 1.5rem;
}

.article-content p {
    margin-bottom: 2rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1.2rem 3rem;
    background: linear-gradient(135deg, var(--color-brand-primary) 0%, var(--color-brand-secondary) 100%);
    color: #fff;
    text-decoration: none;
    border-radius: 100px;
    font-weight: 600;
    transition: var(--t-smooth);
    border: none;
    cursor: pointer;
    box-shadow: 0 10px 20px var(--color-brand-secondary-glow);
}

.btn:hover {
    transform: scale(1.05);
    box-shadow: 0 15px 30px var(--color-brand-primary-glow);
}

/* Animations */
.animate-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1s forwards cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Responsive */
/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-smooth);
}

/* Utility Classes: Spacing */
.m-1 { margin: var(--space-1); } .m-2 { margin: var(--space-2); } .m-4 { margin: var(--space-4); } .m-8 { margin: var(--space-8); }
.mt-1 { margin-top: var(--space-1); } .mt-2 { margin-top: var(--space-2); } .mt-4 { margin-top: var(--space-4); } .mt-8 { margin-top: var(--space-8); } .mt-16 { margin-top: var(--space-16); }
.mb-1 { margin-bottom: var(--space-1); } .mb-2 { margin-bottom: var(--space-2); } .mb-4 { margin-bottom: var(--space-4); } .mb-8 { margin-bottom: var(--space-8); } .mb-16 { margin-bottom: var(--space-16); }

.p-1 { padding: var(--space-1); } .p-2 { padding: var(--space-2); } .p-4 { padding: var(--space-4); } .p-8 { padding: var(--space-8); }
.pt-1 { padding-top: var(--space-1); } .pt-2 { padding-top: var(--space-2); } .pt-4 { padding-top: var(--space-4); } .pt-8 { padding-top: var(--space-8); } .pt-16 { padding-top: var(--space-16); }
.pb-1 { padding-bottom: var(--space-1); } .pb-2 { padding-bottom: var(--space-2); } .pb-4 { padding-bottom: var(--space-4); } .pb-8 { padding-bottom: var(--space-8); } .pb-16 { padding-bottom: var(--space-16); }

.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.py-8 { padding-top: var(--space-8); padding-bottom: var(--space-8); }
.py-16 { padding-top: var(--space-16); padding-bottom: var(--space-16); }

/* Layout Utilities */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-col { flex-direction: column; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-8 { gap: var(--space-8); }

.text-center { text-align: center; }
.w-full { width: 100%; }

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 900px) {
    .feature-grid, .blog-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 3rem; }

    .hamburger { display: flex; }

    .nav-links {
        display: none;
        position: fixed;
        top: 0;
        right: 0;
        width: 280px;
        height: 100vh;
        background: rgba(5, 5, 16, 0.95);
        backdrop-filter: var(--glass-blur);
        flex-direction: column;
        padding: 6rem 2rem 2rem;
        gap: 1.5rem;
        border-left: 1px solid var(--border-main);
        z-index: 1000;
    }

    .nav-links.active {
        display: flex;
    }
}

/* Utility */
.page-header {
    padding: 12rem 0 4rem;
    text-align: center;
}

.page-header h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.content-section {
    padding-bottom: 10rem;
}

/* Footer - Sovereign Obsidian Design */
footer {
    background: #02020a;
    border-top: 1px solid var(--border-main);
    padding: 6rem 0 3rem;
    margin-top: 10rem;
    width: 100%;
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0; left: 50%;
    width: 600px; height: 300px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    transform: translateX(-50%) translateY(-50%);
    opacity: 0.3;
    pointer-events: none;
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.footer-logo img {
    height: 45px;
    filter: drop-shadow(0 0 10px var(--color-brand-primary-glow));
}

.footer-tagline {
    color: var(--gray-400);
    font-size: 0.95rem;
    line-height: 1.7;
    max-width: 320px;
}

.footer-column h4 {
    color: #fff;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 2rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    list-style: none;
    padding: 0;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition-smooth);
    display: inline-block;
}

.footer-links a:hover {
    color: var(--color-brand-primary);
    transform: translateX(5px);
}

.footer-contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.footer-contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition-smooth);
}

.footer-contact-item:hover {
    color: var(--accent-core);
}

.footer-bottom {
    max-width: var(--container-max);
    margin: 4rem auto 0;
    padding: 2rem 2rem 2rem;
    border-top: 1px solid var(--border-main);
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    text-align: center;
}

.footer-bottom p {
    margin: 0;
}

.footer-legal-links {
    display: none;
}

@media (max-width: 900px) {
    .footer-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .footer-brand {
        align-items: center;
    }
    
    .footer-tagline {
        max-width: 100%;
    }
    
    .footer-contact-item {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
    
    .footer-links a:hover {
        transform: none;
    }
}
/* --- 🌊 MERMAID SYSTEM (2-Color Aesthetic) --- */
.mermaid {
    background: rgba(0, 0, 0, 0.4) !important;
    border-radius: 12px;
    padding: 2rem !important;
    margin: 2rem 0 !important;
    font-family: var(--font-primary) !important;
}

.mermaid svg {
    max-width: 100% !important;
    height: auto !important;
}

/* Nodes: Electric Cyan */
.mermaid .node rect, 
.mermaid .node circle, 
.mermaid .node polygon, 
.mermaid .node path {
    fill: rgba(0, 242, 255, 0.05) !important;
    stroke: var(--color-brand-primary) !important;
    stroke-width: 2px !important;
}

.mermaid .node .label, 
.mermaid .node foreignObject {
    color: var(--color-brand-primary) !important;
    font-weight: 500 !important;
}

/* Edges: Hazard Yellow */
.mermaid .edgePath path {
    stroke: var(--color-warning) !important;
    stroke-width: 2px !important;
}

.mermaid .markerPath {
    fill: var(--color-warning) !important;
}

.mermaid .edgeLabel {
    background-color: var(--absolute-black) !important;
    color: var(--color-warning) !important;
}

/* Subgraph/Clusters */
.mermaid .cluster rect {
    fill: rgba(255, 255, 255, 0.02) !important;
    stroke: rgba(255, 255, 255, 0.1) !important;
    stroke-dasharray: 5,5;
}