:root {
    --clean-white: #FAFAFA;
    --clinical-blue: #01579B;
    --artery-red: #D32F2F;
    --bio-green: #00897B;
    --text-dark: #2C3E50;
    --text-muted: #7F8C8D;
    --border-color: #E0E0E0;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-data: 'Fira Code', 'Courier New', Courier, monospace;
}

body {
    background-color: var(--clean-white);
    color: var(--text-dark);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
}

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

.data-param {
    font-family: var(--font-data);
    font-weight: 500;
}

/* Navbar Customization */
.navbar {
    background-color: rgba(250, 250, 250, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 800;
    color: var(--clinical-blue) !important;
    font-size: 1.5rem;
}

.nav-link {
    font-weight: 500;
    color: var(--text-dark) !important;
    margin: 0 10px;
    transition: color 0.3s;
}

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

/* Section Styling */
.section-padding {
    padding: 80px 0;
}

.section-title {
    margin-bottom: 50px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 50px;
    height: 3px;
    background-color: var(--artery-red);
}

/* Card Styling */
.clinical-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 25px;
    transition: all 0.3s ease;
    height: 100%;
}

.clinical-card:hover {
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transform: translateY(-5px);
    border-color: var(--clinical-blue);
}

/* Buttons */
.btn-clinical {
    background-color: var(--clinical-blue);
    color: white;
    border-radius: 0;
    padding: 10px 25px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s;
}

.btn-clinical:hover {
    background-color: #01447a;
    color: white;
}

.btn-outline-clinical {
    border: 2px solid var(--clinical-blue);
    color: var(--clinical-blue);
    border-radius: 0;
    padding: 8px 20px;
    font-weight: 600;
}

/* Footer */
footer {
    background-color: #f0f0f0;
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-color);
}

.footer-logo {
    font-weight: 800;
    color: var(--clinical-blue);
    margin-bottom: 20px;
    display: block;
}

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

/* Animations */
@keyframes dna-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.dna-icon {
    animation: dna-spin 20s linear infinite;
}