:root {
    --primary-blue: #01579B;
    --accent-green: #4CAF50;
    --oxygen-white: #E1F5FE;
    --mineral-gray: #455A64;
    --dark-bg: #012b4d;
    --fluid-gradient: linear-gradient(135deg, #01579B 0%, #002f56 100%);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--oxygen-white);
    color: var(--mineral-gray);
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: var(--primary-blue);
}

.mono-font {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.9rem;
}

/* Navbar */
.navbar {
    background-color: rgba(1, 87, 155, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar-brand {
    font-weight: 800;
    letter-spacing: 1px;
    color: #fff !important;
}

.nav-link {
    color: rgba(255, 255, 255, 0.8) !important;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Hero Section */
.hero-section {
    background: var(--fluid-gradient);
    min-height: 80vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    color: white;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://www.transparenttextures.com/patterns/cubes.png');
    opacity: 0.1;
}

/* Cards & Sections */
.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.section-title {
    position: relative;
    padding-bottom: 15px;
    margin-bottom: 30px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 4px;
    background-color: var(--accent-green);
}

/* Footer */
footer {
    background-color: var(--primary-blue);
    color: white;
    padding: 60px 0 30px;
}

.footer-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Technical Styles */
.formula-box {
    background: #f8f9fa;
    border-left: 4px solid var(--primary-blue);
    padding: 20px;
    margin: 20px 0;
    font-family: 'JetBrains Mono', monospace;
}

.badge-tech {
    background-color: var(--primary-blue);
    color: white;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
}

/* Dashboard Elements */
.stat-card {
    background: white;
    padding: 25px;
    border-radius: 15px;
    text-align: center;
    border-bottom: 5px solid var(--primary-blue);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-blue);
}

.stat-label {
    color: var(--mineral-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.8rem;
}