:root {
    --primary-color: #003399; /* Deep Blue */
    --secondary-color: #002266; /* Darker Blue for hover/accent */
    --accent-color: #ffcc00; /* Industrial Yellow for CTAs (optional, good contrast) */
    --text-dark: #333333;
    --text-light: #ffffff;
    --bg-light: #f8f9fa;
    --font-heading: 'Roboto', sans-serif; /* Or similar industrial font */
    --font-body: 'Open Sans', sans-serif;
}

body {
    font-family: var(--font-body);
    color: var(--text-dark);
}

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

/* Header & Nav */
.navbar {
    background-color: var(--text-light);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-weight: 900;
    color: var(--primary-color) !important;
    font-size: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-link {
    color: var(--text-dark) !important;
    font-weight: 600;
    transition: color 0.3s;
}

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

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    border-radius: 0; /* Industrial look */
    padding: 0.5rem 1.5rem;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-primary:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

/* Footer */
footer {
    background-color: #1a1a1a;
    color: #cccccc;
    padding: 3rem 0;
}

footer h5 {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

footer a {
    color: #cccccc;
    text-decoration: none;
    transition: color 0.3s;
}

footer a:hover {
    color: var(--primary-color);
}

/* Hero Section (Placeholder styles) */
.hero-section {
    background: linear-gradient(rgba(0, 51, 153, 0.8), rgba(0, 34, 102, 0.8)), url('../images/hero-bg.jpg'); /* Graceful fallback */
    background-size: cover;
    background-position: center;
    color: white;
    padding: 100px 0;
    text-align: center;
}

.hero-section h1 {
    color: white;
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

/* Utility */
.text-primary-custom {
    color: var(--primary-color);
}

.bg-light-custom {
    background-color: var(--bg-light);
}

.section-padding {
    padding: 80px 0;
}