/* ===== CSS Variables ===== */
:root {
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --accent-primary: #00d4ff;
    --accent-secondary: #0891b2;
    --accent-tertiary: #22d3ee;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: rgba(0, 212, 255, 0.15);
    --glow-color: rgba(0, 212, 255, 0.4);
    
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Rajdhani', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

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

/* ===== Canvas Background ===== */
#swarmCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* ===== Overlays ===== */
.overlay {
    display: none;
}

.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: 3;
    pointer-events: none;
}

/* ===== Header ===== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 1.5rem 3rem;
    background: linear-gradient(to bottom, rgba(10, 14, 23, 0.95), transparent);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    font-size: 1.5rem;
    color: var(--accent-primary);
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-tertiary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: color 0.3s, text-shadow 0.3s;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-primary);
    transition: width 0.3s;
}

.nav-links a:hover {
    color: var(--accent-primary);
    text-shadow: 0 0 20px var(--glow-color);
}

.nav-links a:hover::after {
    width: 100%;
}

/* ===== Main Content ===== */
main {
    position: relative;
    z-index: 10;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem 2rem 2rem;
}

/* ===== Hero Section ===== */
.hero {
    text-align: center;
    max-width: 1000px;
}

.hero-content {
    animation: fade-in-up 1s ease-out;
}

.classification-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid var(--border-color);
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--accent-primary);
    margin-bottom: 2rem;
}

.badge-icon {
    font-size: 0.9rem;
}

.main-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 12vw, 8rem);
    font-weight: 900;
    letter-spacing: 0.15em;
    line-height: 1;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.subtitle {
    font-family: var(--font-body);
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    margin-bottom: 2rem;
    opacity: 0.8;
}


/* ===== Tagline ===== */
.tagline {
    font-size: 1.15rem;
    font-weight: 400;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 3rem;
    line-height: 1.7;
    letter-spacing: 0.02em;
}

/* ===== Buttons ===== */
.cta-group {
    display: flex;
    justify-content: center;
    gap: 1.25rem;
    margin-bottom: 4rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border: none;
    border-radius: 0.25rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
    color: var(--bg-primary);
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
}

.btn-secondary:hover {
    background: rgba(0, 212, 255, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.2);
}

.btn-icon {
    font-size: 0.8rem;
}

/* ===== Stats Bar ===== */
.stats-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 3rem;
    padding: 1.5rem 3rem;
    background: rgba(17, 24, 39, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    backdrop-filter: blur(10px);
}

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

.stat-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
    text-shadow: 0 0 20px var(--glow-color);
}

.stat-suffix {
    font-family: var(--font-display);
    font-size: 1rem;
    color: var(--accent-tertiary);
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-top: 0.25rem;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, transparent, var(--border-color), transparent);
}

/* ===== Footer ===== */
footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 1rem 3rem;
    background: linear-gradient(to top, rgba(10, 14, 23, 0.95), transparent);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.copyright {
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 0.05em;
}

.security-notice {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: #22c55e;
    letter-spacing: 0.05em;
}

.pulse {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

/* ===== Animations ===== */
@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}


@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(0.8);
    }
}




/* ===== Responsive ===== */
@media (max-width: 768px) {
    header {
        padding: 1rem 1.5rem;
    }
    
    .nav-links {
        display: none;
    }
    
    main {
        padding: 5rem 1rem 4rem;
    }
    
    .acronym-container {
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
        padding: 1.5rem;
    }
    
    .stats-bar {
        flex-direction: column;
        gap: 1.5rem;
        padding: 1.5rem;
    }
    
    .stat-divider {
        width: 60px;
        height: 1px;
        background: linear-gradient(to right, transparent, var(--border-color), transparent);
    }
    
    .cta-group {
        flex-direction: column;
        align-items: center;
    }
    
    footer {
        padding: 1rem 1.5rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
}