/* Helix Genesis - Global Styles */
:root {
    --lab-white: #F8F9FA;
    --gene-deep-blue: #001F3F;
    --signal-green: #39FF14;
    --molecular-purple: #6F42C1;
    --text-dark: #212529;
    --border-light: #E9ECEF;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--gene-deep-blue);
}

.text-signal-green { color: var(--signal-green); }
.bg-gene-blue { background-color: var(--gene-deep-blue); color: white; }

/* Navbar */
.navbar {
    background-color: rgba(248, 249, 250, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
    padding: 1rem 2rem;
}

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

.nav-link {
    font-weight: 500;
    color: var(--gene-deep-blue) !important;
    margin: 0 10px;
    font-size: 0.9rem;
    text-transform: uppercase;
}

.nav-link:hover {
    color: var(--molecular-purple) !important;
}

/* Clinical Minimalism Cards */
.card-clinical {
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 0;
    transition: all 0.3s ease;
    padding: 2rem;
}

.card-clinical:hover {
    border-color: var(--signal-green);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

/* DNA Animation Background (Placeholder) */
#dna-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.1;
}

/* Footer */
footer {
    background-color: var(--gene-deep-blue);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-link {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 0.85rem;
}

.footer-link:hover {
    color: var(--signal-green);
}

/* Grid Pattern Background */
.bg-grid {
    background-image: radial-gradient(var(--border-light) 1px, transparent 1px);
    background-size: 30px 30px;
}