@view-transition {
    navigation: auto;
}

html {
    scroll-behavior: smooth;
}

:root{
    --accent:#38bdf8;
    --accent2:#a78bfa;
}

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

body{
    font-family:'Inter',sans-serif;
    background: radial-gradient(circle at 20% 20%, #0f172a, #020617 60%, #000000);
    color:white;
    overflow-x:hidden;
    animation: fadeInPage 0.5s ease-out;
}

@keyframes fadeInPage {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

nav{
    position:fixed;
    top:0;
    width:100%;
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:16px 64px;

    background: rgba(2,6,23,0.6);
    backdrop-filter: blur(12px);
    z-index:1000;

    border-bottom:1px solid rgba(255,255,255,0.08);
    box-shadow:0 10px 30px rgba(0,0,0,0.3);
    view-transition-name: main-nav;
}

.logo-wrap{
    display:flex;
    align-items:center;
    height:40px;
    overflow:visible;
}

nav .logo{
    font-family:'Orbitron', sans-serif;
    font-size:22px;
    letter-spacing:2px;
    line-height:1;

    display:block;

    padding:2px 0 6px 0;

    transform: translateY(-1px);

    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

nav ul{
    display:flex;
    gap:32px;
    list-style:none;
}

nav ul li{
    cursor:pointer;
    opacity:0.75;
    transition:0.3s;
    font-size:14px;
}

nav ul li:hover{
    opacity:1;
    color:var(--accent);
}

nav ul li a {
    display: block;
    color: inherit;
    text-decoration: none;
}

/* HERO */
.hero{
    height:100vh;
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:0 64px;
    view-transition-name: page-content;
}

.title{
    max-width:640px;
}

.title h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 80px;
    line-height: 1.3;
    color: #ffffff;
    text-shadow:
        0 0 40px rgba(56, 189, 248, 0.6),
        0 0 80px rgba(167, 139, 250, 0.3);
    padding-bottom: 28px;
}

.title p{
    margin-top:8px;
    opacity:0.75;
    font-size:18px;
    max-width:512px;
}

.buttons{
    margin-top:32px;
    display:flex;
    gap:16px;
}

.btn{
    display: inline-block;
    text-decoration: none;
    color: white;
    padding:12px 28px;
    border-radius:12px;
    border:1px solid rgba(255,255,255,0.3);
    background:linear-gradient(135deg, rgba(56,189,248,0.2), rgba(167,139,250,0.2));
    backdrop-filter:blur(6px);
    cursor:pointer;
    transition:0.3s;
    font-size:14px;
    font-weight:600;
}

.btn:hover{
    transform:translateY(-2px);
    box-shadow:0 0 20px rgba(56,189,248,0.4);
    background:linear-gradient(135deg, rgba(56,189,248,0.3), rgba(167,139,250,0.3));
    border-color: rgba(255,255,255,0.5);
}

/* IMAGE */
.engine-preview{
    perspective:1200px;
}

.engine-preview img{
    width:704px;
    border-radius:8px 8px 24px 24px;
    transform:rotateY(-25deg) rotateX(5deg);
    box-shadow:0 40px 80px rgba(0,0,0,0.6);
    transition:0.5s;
}

.engine-preview img:hover{
    transform:rotateY(-10deg) rotateX(2deg) scale(1.02);
}

/* FLOAT GRID */
.background-cubes{
    position:fixed;
    width:100%;
    height:100%;
    z-index:-1;
    overflow:hidden;
    perspective:1000px;
    view-transition-name: bg-cubes;
}

.background-cubes .cube{
    position:absolute;
    width:var(--sz, 40px);
    height:var(--sz, 40px);
    transform-style:preserve-3d;
    animation:float 22s linear infinite;
}

.background-cubes .cube div{
    position:absolute;
    width:100%;
    height:100%;
    background:rgba(255,255,255,0.1);
}

.background-cubes .cube div:nth-child(1) { transform: translateZ(calc(var(--sz, 40px) / 2)); }
.background-cubes .cube div:nth-child(2) { transform: rotateY(180deg) translateZ(calc(var(--sz, 40px) / 2)); }
.background-cubes .cube div:nth-child(3) { transform: rotateY(90deg) translateZ(calc(var(--sz, 40px) / 2)); }
.background-cubes .cube div:nth-child(4) { transform: rotateY(-90deg) translateZ(calc(var(--sz, 40px) / 2)); }
.background-cubes .cube div:nth-child(5) { transform: rotateX(90deg) translateZ(calc(var(--sz, 40px) / 2)); }
.background-cubes .cube div:nth-child(6) { transform: rotateX(-90deg) translateZ(calc(var(--sz, 40px) / 2)); }

@keyframes float{
    from{transform:translateY(110vh) rotateX(0deg) rotateY(0deg) rotateZ(0deg)}
    to{transform:translateY(-20vh) rotateX(360deg) rotateY(720deg) rotateZ(360deg)}
}

/* DOCS */
.docs{
    padding:128px 64px;
    scroll-margin-top: 80px;
    view-transition-name: page-content;
}

.docs h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 40px;
    margin-bottom: 32px;
    color: #ffffff;
    text-shadow:
        0 0 30px rgba(56, 189, 248, 0.5),
        0 0 60px rgba(167, 139, 250, 0.2);
}

.docs h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 24px;
    margin: 40px 0 16px 0;
    color: var(--accent);
}

.docs p{
    opacity:0.75;
    line-height:1.6;
    margin-bottom: 16px;
}

.docs code {
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    background: rgba(255,255,255,0.1);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--accent2);
}

.docs pre {
    background: rgba(0,0,0,0.3);
    padding: 24px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.1);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    overflow-x: auto;
    margin: 24px 0;
}

.docs pre code {
    background: none;
    padding: 0;
    color: #e2e8f0;
}

.api-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 24px;
}

.api-card {
    background: rgba(255,255,255,0.03);
    padding: 24px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.05);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.api-card h4 {
    margin-bottom: 12px;
    color: var(--accent);
}

.docs-note {
    margin-top: 40px;
    padding: 20px;
    border-left: 4px solid var(--accent2);
    background: rgba(167, 139, 250, 0.1);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

/* Syntax Highlighting */
.sh-keyword { color: var(--accent2); font-weight: 600; }
.sh-string { color: var(--accent); }
.sh-comment { color: rgba(255,255,255,0.4); font-style: italic; }

/* RESPONSIVE */
@media (max-width: 1024px) {
    nav {
        padding: 16px 24px;
    }

    nav ul {
        display: none;
    }

    .hero {
        flex-direction: column;
        height: auto;
        padding: 128px 24px 64px 24px;
        text-align: center;
        justify-content: center;
    }

    .title {
        max-width: 100%;
        margin-bottom: 48px;
    }

    .title h1 {
        font-size: 48px;
    }

    .title p {
        margin: 24px auto 0 auto;
    }

    .buttons {
        justify-content: center;
    }

    .engine-preview img {
        width: 100%;
        max-width: 480px;
        transform: rotateY(0) rotateX(0);
    }

    .docs {
        padding: 64px 24px;
    }
}