@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@700&family=Roboto:wght@400;500&display=swap');

:root {
    --bg-deep-space: #01041a;
    --primary-nexus: #05fdd8;
    --secondary-nexus: #8A2BE2;
    --text-primary: #e0e5f0;
    --text-secondary: #8e94a8;
    --glass-bg: rgba(10, 15, 40, 0.5);
    --border-color: rgba(5, 253, 216, 0.2);
    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Roboto', sans-serif;
}

/* --- RESET & BACKGROUND --- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-body);
    background-color: var(--bg-deep-space);
    background-image: linear-gradient(145deg, var(--bg-deep-space) 0%, #0c052e 50%, #1a082b 100%);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

/* --- GLOBAL COMPONENTS --- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-wrapper { padding: 100px 0; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-title { font-family: var(--font-heading); font-size: 2.5rem; color: #fff; text-shadow: 0 0 15px var(--primary-nexus); margin-bottom: 1rem; }
.section-subtitle { color: var(--text-secondary); max-width: 600px; margin: 0 auto; }

.btn { text-decoration: none; transition: all 0.3s ease; }
.btn-primary {
    background-color: var(--primary-nexus);
    color: var(--bg-deep-space);
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 700;
    font-family: var(--font-heading);
    box-shadow: 0 0 10px var(--primary-nexus), 0 0 20px var(--primary-nexus);
    border: 1px solid var(--primary-nexus);
}
.btn-primary:hover { transform: scale(1.05); box-shadow: 0 0 20px var(--primary-nexus), 0 0 40px var(--primary-nexus); }
.btn-large { font-size: 1.1rem; padding: 15px 35px; }

/* --- HEADER --- */
#site-header {
    padding: 20px 0;
    position: fixed; width: 100%; top: 0; z-index: 1000;
    background-color: transparent;
    transition: background-color 0.3s ease, backdrop-filter 0.3s ease;
}
#site-header.scrolled { background-color: rgba(1, 4, 26, 0.7); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border-color); }
.header-container { display: flex; justify-content: space-between; align-items: center; }
.site-logo img { max-height: 40px; }
.main-nav a { color: var(--text-secondary); text-decoration: none; margin: 0 20px; font-weight: 500; }
.main-nav a:hover { color: var(--primary-nexus); }
main { padding-top: 84px; }

/* --- HERO SECTION --- */
#hero { min-height: 90vh; display: flex; align-items: center; }
.hero-container { display: grid; grid-template-columns: 1.2fr 1fr; align-items: center; gap: 50px; }
#hero h1 { font-family: var(--font-heading); font-size: 3.5rem; line-height: 1.2; margin-bottom: 1.5rem; color: #fff; }
#hero p { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: 2.5rem; max-width: 500px; }
.nexus-sphere {
    width: 350px; height: 350px;
    background: radial-gradient(circle, var(--primary-nexus) 0%, var(--secondary-nexus) 100%);
    border-radius: 50%;
    box-shadow: 0 0 50px var(--primary-nexus), 0 0 100px var(--secondary-nexus);
    transform-style: preserve-3d;
}

/* --- ARENA SECTION (AURORA GLASS CARDS) --- */
.arena-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.card-aurora {
    padding: 30px;
    border: 1px solid var(--border-color);
    border-radius: 15px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease;
}
.card-aurora:hover { transform: translateY(-10px); }
.card-aurora::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle, rgba(5, 253, 216, 0.15) 0%, rgba(138, 43, 226, 0.1) 50%, transparent 70%);
    transform-origin: center;
    animation: rotateAurora 10s linear infinite;
    z-index: -1;
}
@keyframes rotateAurora { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
.card-aurora h3 { font-family: var(--font-heading); font-size: 1.5rem; margin-bottom: 0.5rem; color: #fff; }
.card-aurora p { color: var(--text-secondary); margin-bottom: 1.5rem; }
.card-link { color: var(--primary-nexus); font-weight: 700; text-decoration: none; }
.card-link:hover i { transform: translateX(5px); }
.card-link i { transition: transform 0.2s ease; margin-left: 5px; }

/* --- CORE PILLARS SECTION --- */
.pillars-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; text-align: center; }
.pillar-item i { font-size: 3rem; color: var(--primary-nexus); margin-bottom: 1.5rem; }
.pillar-item h3 { font-family: var(--font-heading); font-size: 1.25rem; color: #fff; margin-bottom: 0.5rem; }
.pillar-item p { max-width: 300px; margin: 0 auto; }

/* --- FINAL CTA --- */
.cta-content { text-align: center; max-width: 700px; margin: 0 auto; }
.cta-content h2 { font-size: 2.8rem; margin-bottom: 1rem; }
.cta-content p { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: 2rem; }

/* --- FOOTER --- */
#site-footer { padding: 30px 0; border-top: 1px solid var(--border-color); text-align: center; color: var(--text-secondary); }

/* --- RESPONSIVE DESIGN --- */
@media (max-width: 992px) {
    .hero-container { grid-template-columns: 1fr; text-align: center; }
    .hero-visual { display: none; } /* Hide 3D sphere on smaller screens for performance */
    #hero p { margin: 1.5rem auto 2.5rem auto; }
    .arena-grid, .pillars-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .main-nav { display: none; }
    #hero h1 { font-size: 2.5rem; }
}