/* ============================================
   AntiGravity Docs — HolodeckOS Edition
   Design System & Global Styles
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Outfit:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* ---- CSS Custom Properties ---- */
:root {
    /* Core Palette */
    --mint: #a8edca;
    --mint-dark: #6bc8a0;
    --lavender: #c5b3e6;
    --lavender-dark: #9b7fd4;
    --cyan-glow: #00f5d4;
    --cyan-soft: #00f5d466;
    --purple-iridescent: #b388ff;
    --purple-deep: #7c4dff;
    --pink-soft: #f8a4d0;
    --gold-sparkle: #ffd700;
    --green-frog: #6ecf6e;

    /* Backgrounds */
    --bg-primary: #0a0e1a;
    --bg-secondary: #0d1225;
    --bg-card: rgba(255, 255, 255, 0.04);
    --bg-card-hover: rgba(255, 255, 255, 0.08);
    --bg-glass: rgba(255, 255, 255, 0.06);
    --bg-glass-strong: rgba(255, 255, 255, 0.12);

    /* Text */
    --text-primary: #f0f0f5;
    --text-secondary: #a0a8c0;
    --text-accent: var(--cyan-glow);
    --text-muted: #6b7394;

    /* Borders */
    --border-glass: rgba(255, 255, 255, 0.1);
    --border-glow: rgba(0, 245, 212, 0.3);

    /* Shadows */
    --shadow-glow: 0 0 30px rgba(0, 245, 212, 0.15);
    --shadow-glow-purple: 0 0 30px rgba(179, 136, 255, 0.15);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-elevated: 0 20px 60px rgba(0, 0, 0, 0.4);

    /* 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;

    /* Radii */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-round: 50%;

    /* Typography */
    --font-display: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 500ms ease;
    --transition-spring: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Animated starfield background */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -2;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(168, 237, 202, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(179, 136, 255, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(0, 245, 212, 0.04) 0%, transparent 50%);
}

body::after {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    background-image:
        radial-gradient(1px 1px at 10% 20%, rgba(255, 255, 255, 0.4) 0%, transparent 100%),
        radial-gradient(1px 1px at 30% 60%, rgba(255, 255, 255, 0.3) 0%, transparent 100%),
        radial-gradient(1px 1px at 50% 10%, rgba(255, 255, 255, 0.5) 0%, transparent 100%),
        radial-gradient(1px 1px at 70% 40%, rgba(255, 255, 255, 0.2) 0%, transparent 100%),
        radial-gradient(1px 1px at 90% 70%, rgba(255, 255, 255, 0.4) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 15% 80%, rgba(0, 245, 212, 0.3) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 85% 30%, rgba(179, 136, 255, 0.3) 0%, transparent 100%),
        radial-gradient(1px 1px at 45% 45%, rgba(255, 255, 255, 0.3) 0%, transparent 100%),
        radial-gradient(1px 1px at 65% 85%, rgba(168, 237, 202, 0.3) 0%, transparent 100%),
        radial-gradient(1px 1px at 25% 35%, rgba(255, 255, 255, 0.2) 0%, transparent 100%);
    animation: twinkle 8s ease-in-out infinite alternate;
}

@keyframes twinkle {
    0% {
        opacity: 0.6;
    }

    50% {
        opacity: 1;
    }

    100% {
        opacity: 0.7;
    }
}

/* ---- Typography ---- */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
}

h2 {
    font-size: clamp(1.8rem, 4vw, 3rem);
    font-weight: 800;
}

h3 {
    font-size: clamp(1.3rem, 2.5vw, 1.75rem);
    font-weight: 700;
}

h4 {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    font-weight: 600;
}

p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 70ch;
}

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

a:hover {
    color: var(--mint);
    text-shadow: 0 0 10px var(--cyan-soft);
}

/* ---- Layout Utilities ---- */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

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

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

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

.flex-between {
    justify-content: space-between;
}

.gap-sm {
    gap: var(--space-sm);
}

.gap-md {
    gap: var(--space-md);
}

.gap-lg {
    gap: var(--space-lg);
}

.gap-xl {
    gap: var(--space-xl);
}

.gap-2xl {
    gap: var(--space-2xl);
}

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

/* ---- Glassmorphism Card ---- */
.glass-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.glass-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

/* ---- Navigation ---- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
    padding: var(--space-md) 0;
    transition: var(--transition-base);
}

.nav.scrolled {
    background: rgba(10, 14, 26, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.4rem;
    color: var(--text-primary);
}

.nav-logo .logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--cyan-glow), var(--purple-iridescent));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.nav-logo .logo-text-accent {
    background: linear-gradient(135deg, var(--cyan-glow), var(--purple-iridescent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--cyan-glow);
    background: rgba(0, 245, 212, 0.08);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* ---- Hero Section ---- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: calc(80px + var(--space-3xl)) var(--space-xl) var(--space-3xl);
    position: relative;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--bg-glass);
    border: 1px solid var(--border-glow);
    border-radius: 100px;
    padding: var(--space-xs) var(--space-lg);
    font-size: 0.85rem;
    color: var(--cyan-glow);
    margin-bottom: var(--space-xl);
    font-weight: 500;
    animation: float 3s ease-in-out infinite;
}

.hero-badge .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--cyan-glow);
    box-shadow: 0 0 10px var(--cyan-glow);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.5;
        transform: scale(0.8);
    }
}

.hero h1 {
    margin-bottom: var(--space-lg);
}

.hero h1 .gradient-text {
    background: linear-gradient(135deg, var(--cyan-glow) 0%, var(--purple-iridescent) 50%, var(--pink-soft) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: shimmer 4s ease-in-out infinite;
}

@keyframes shimmer {

    0%,
    100% {
        background-position: 0% center;
    }

    50% {
        background-position: 100% center;
    }
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.35rem);
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto var(--space-2xl);
    line-height: 1.8;
}

.hero-image {
    position: relative;
    margin-top: var(--space-2xl);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-elevated), 0 0 80px rgba(0, 245, 212, 0.1);
    border: 1px solid var(--border-glow);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

.hero-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, var(--bg-primary) 100%);
    pointer-events: none;
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: var(--transition-spring);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--cyan-glow), var(--purple-iridescent));
    color: var(--bg-primary);
    box-shadow: 0 4px 20px rgba(0, 245, 212, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 30px rgba(0, 245, 212, 0.4);
    color: var(--bg-primary);
}

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

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--border-glow);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.btn-group {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ---- Section Headers ---- */
.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-header .section-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--cyan-glow);
    margin-bottom: var(--space-md);
    padding: var(--space-xs) var(--space-md);
    background: rgba(0, 245, 212, 0.08);
    border: 1px solid rgba(0, 245, 212, 0.15);
    border-radius: 100px;
}

.section-header h2 {
    margin-bottom: var(--space-md);
}

.section-header p {
    margin: 0 auto;
    font-size: 1.1rem;
}

/* ---- Docs Grid ---- */
.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--space-xl);
}

.doc-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-base);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

.doc-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
    color: inherit;
}

.doc-card-image {
    width: 100%;
    aspect-ratio: 16/10;
    overflow: hidden;
    position: relative;
}

.doc-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.doc-card:hover .doc-card-image img {
    transform: scale(1.05);
}

.doc-card-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60%;
    background: linear-gradient(transparent, rgba(10, 14, 26, 0.8));
    pointer-events: none;
}

.doc-card-body {
    padding: var(--space-lg) var(--space-xl) var(--space-xl);
}

.doc-card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    font-size: 1.2rem;
    margin-bottom: var(--space-md);
}

.doc-card-icon.cyan {
    background: rgba(0, 245, 212, 0.12);
}

.doc-card-icon.purple {
    background: rgba(179, 136, 255, 0.12);
}

.doc-card-icon.pink {
    background: rgba(248, 164, 208, 0.12);
}

.doc-card-icon.mint {
    background: rgba(168, 237, 202, 0.12);
}

.doc-card-icon.gold {
    background: rgba(255, 215, 0, 0.12);
}

.doc-card h3 {
    font-size: 1.15rem;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.doc-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.doc-card-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 2px 8px;
    border-radius: 4px;
    margin-bottom: var(--space-sm);
}

.doc-card-tag.core {
    background: rgba(0, 245, 212, 0.12);
    color: var(--cyan-glow);
}

.doc-card-tag.agent {
    background: rgba(179, 136, 255, 0.12);
    color: var(--purple-iridescent);
}

.doc-card-tag.security {
    background: rgba(248, 164, 208, 0.12);
    color: var(--pink-soft);
}

.doc-card-tag.artifacts {
    background: rgba(168, 237, 202, 0.12);
    color: var(--mint);
}

/* ---- Character Showcase ---- */
.character-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.character-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-glow-purple);
}

.character-image img {
    width: 100%;
    height: auto;
    display: block;
}

.character-info h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

.character-info p {
    margin-bottom: var(--space-lg);
}

.character-traits {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.trait-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 100px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ---- Devices Section ---- */
.devices-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-xl);
}

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

.device-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
}

.device-card-image {
    width: 100%;
    aspect-ratio: 16/10;
    overflow: hidden;
}

.device-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.device-card:hover .device-card-image img {
    transform: scale(1.05);
}

.device-card-body {
    padding: var(--space-lg) var(--space-xl);
}

.device-card h3 {
    font-size: 1.1rem;
    margin-bottom: var(--space-xs);
}

.device-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ---- Footer ---- */
.footer {
    border-top: 1px solid var(--border-glass);
    padding: var(--space-3xl) 0 var(--space-xl);
    text-align: center;
}

.footer-brand {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.footer-brand .accent {
    background: linear-gradient(135deg, var(--cyan-glow), var(--purple-iridescent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0 auto;
}

/* ---- Floating Animation ---- */
@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-8px);
    }
}

.float {
    animation: float 3s ease-in-out infinite;
}

.float-delay-1 {
    animation-delay: 0.5s;
}

.float-delay-2 {
    animation-delay: 1s;
}

.float-delay-3 {
    animation-delay: 1.5s;
}

/* ---- Glow Divider ---- */
.glow-divider {
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--cyan-glow), var(--purple-iridescent), transparent);
    opacity: 0.3;
    margin: var(--space-3xl) 0;
}

/* ---- Scroll Reveal ---- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .docs-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .character-showcase {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .character-info {
        order: 2;
    }

    .character-traits {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    :root {
        --space-xl: 1.25rem;
        --space-2xl: 2rem;
        --space-3xl: 3rem;
        --space-4xl: 4rem;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(10, 14, 26, 0.97);
        backdrop-filter: blur(20px);
        padding: var(--space-lg);
        border-bottom: 1px solid var(--border-glass);
    }

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

    .nav-toggle {
        display: flex;
    }

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

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

    .hero {
        padding-top: calc(70px + var(--space-2xl));
    }

    .btn-group {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.6rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .doc-card-body {
        padding: var(--space-md);
    }
}

/* ---- Intro Animation ---- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }

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

.animate-in {
    animation: fadeInUp 0.8s ease forwards;
}

.animate-in:nth-child(2) {
    animation-delay: 0.1s;
}

.animate-in:nth-child(3) {
    animation-delay: 0.2s;
}

.animate-in:nth-child(4) {
    animation-delay: 0.3s;
}

.animate-in:nth-child(5) {
    animation-delay: 0.4s;
}

/* ---- Circuit Floor Accent ---- */
.circuit-accent {
    position: relative;
}

.circuit-accent::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 200px;
    background: radial-gradient(ellipse at center bottom, rgba(0, 245, 212, 0.06) 0%, transparent 70%);
    pointer-events: none;
}