:root {
    --iron-gray: #1C1C1C;
    --energy-green: #40916C;
    --pulse-orange: #FF4D00;
    --gas-blue: #0077B6;
    --text-light: #E0E0E0;
    --border-gray: #333333;
}

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

.mono-font {
    font-family: 'JetBrains Mono', 'Courier New', Courier, monospace;
}

/* Navbar Styling */
.navbar {
    background-color: rgba(28, 28, 28, 0.95);
    border-bottom: 1px solid var(--border-gray);
    backdrop-filter: blur(10px);
}

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

.nav-link {
    color: var(--text-light) !important;
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    transition: color 0.3s ease;
}

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

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

.section-title {
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 40px;
    border-left: 4px solid var(--energy-green);
    padding-left: 20px;
}

/* Card Styling */
.card {
    background-color: #252525;
    border: 1px solid var(--border-gray);
    border-radius: 0;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.card:hover {
    border-color: var(--energy-green);
    transform: translateY(-5px);
}

.card-title {
    color: var(--energy-green);
    font-weight: 700;
}

/* Button Styling */
.btn-primary {
    background-color: var(--energy-green);
    border-color: var(--energy-green);
    border-radius: 0;
    font-weight: 600;
    text-transform: uppercase;
    padding: 10px 25px;
}

.btn-primary:hover {
    background-color: #2d6a4f;
    border-color: #2d6a4f;
}

.btn-outline-primary {
    color: var(--energy-green);
    border-color: var(--energy-green);
    border-radius: 0;
}

.btn-outline-primary:hover {
    background-color: var(--energy-green);
    border-color: var(--energy-green);
}

/* Footer */
footer {
    background-color: #111111;
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-gray);
}

.footer-brand {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--energy-green);
    margin-bottom: 20px;
}

/* Animations */
@keyframes pulse {
    0% { opacity: 0.6; }
    50% { opacity: 1; }
    100% { opacity: 0.6; }
}

.pulse-effect {
    animation: pulse 2s infinite ease-in-out;
}

/* Technical elements */
.tech-border {
    border: 1px solid var(--border-gray);
    position: relative;
}

.tech-border::before {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    width: 10px;
    height: 10px;
    border-top: 2px solid var(--energy-green);
    border-left: 2px solid var(--energy-green);
}

.tech-border::after {
    content: '';
    position: absolute;
    bottom: -1px;
    right: -1px;
    width: 10px;
    height: 10px;
    border-bottom: 2px solid var(--energy-green);
    border-right: 2px solid var(--energy-green);
}