/* Nexus-Bio Performance & Longevity - Global Styles */
:root {
    --bg-deep: #0D1B2A;
    --accent-mint: #00F5D4;
    --titanium-gray: #415A77;
    --text-light: #E0E1DD;
    --neon-glow: 0 0 10px rgba(0, 245, 212, 0.5), 0 0 20px rgba(0, 245, 212, 0.3);
}

body {
    background-color: var(--bg-deep);
    color: var(--text-light);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    overflow-x: hidden;
    line-height: 1.6;
}

/* Cyber Precision UI Elements */
.glass-panel {
    background: rgba(65, 90, 119, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 245, 212, 0.2);
    border-radius: 4px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.glass-panel:hover {
    border-color: var(--accent-mint);
    box-shadow: var(--neon-glow);
}

.neon-text {
    color: var(--accent-mint);
    text-shadow: var(--neon-glow);
}

.btn-nexus {
    background: transparent;
    border: 1px solid var(--accent-mint);
    color: var(--accent-mint);
    padding: 10px 25px;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 600;
    position: relative;
    overflow: hidden;
    transition: 0.3s;
}

.btn-nexus:hover {
    background: var(--accent-mint);
    color: var(--bg-deep);
    box-shadow: var(--neon-glow);
}

/* Pulse Animation for Buttons */
@keyframes pulse-border {
    0% { box-shadow: 0 0 0 0 rgba(0, 245, 212, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(0, 245, 212, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 245, 212, 0); }
}

.pulse-btn {
    animation: pulse-border 2s infinite;
}

/* Navigation */
.navbar {
    background: rgba(13, 27, 42, 0.95) !important;
    border-bottom: 1px solid var(--titanium-gray);
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--accent-mint) !important;
}

.nav-link {
    color: var(--text-light) !important;
    margin: 0 15px;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: 0.3s;
}

.nav-link:hover, .nav-link.active {
    color: var(--accent-mint) !important;
}

/* Footer */
footer {
    border-top: 1px solid var(--titanium-gray);
    padding: 4rem 0 2rem;
    margin-top: 5rem;
}

/* Scanline Effect */
body::before {
    content: " ";
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.1) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.02), rgba(0, 255, 0, 0.01), rgba(0, 0, 255, 0.02));
    z-index: 9999;
    background-size: 100% 4px, 3px 100%;
    pointer-events: none;
}

/* Section Titles */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--accent-mint);
    margin: 15px auto;
}