:root {
    --titan-gray: #34495E;
    --combustion-orange: #FF8C00;
    --digital-blue: #00A8E8;
    --neutral-white: #F8F9FA;
    --dark-bg: #1A1A1A;
    --card-bg: rgba(52, 73, 94, 0.8);
}

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

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

.navbar {
    background-color: rgba(26, 26, 26, 0.95);
    border-bottom: 1px solid var(--titan-gray);
    backdrop-filter: blur(10px);
}

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

.nav-link {
    color: var(--neutral-white) !important;
    font-weight: 500;
    transition: color 0.3s;
}

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

.btn-primary {
    background-color: var(--combustion-orange);
    border-color: var(--combustion-orange);
}

.btn-primary:hover {
    background-color: #e67e00;
    border-color: #e67e00;
}

.section-title {
    border-left: 4px solid var(--combustion-orange);
    padding-left: 15px;
    margin-bottom: 30px;
}

.tech-card {
    background: var(--card-bg);
    border: 1px solid var(--titan-gray);
    border-radius: 8px;
    padding: 20px;
    transition: transform 0.3s, border-color 0.3s;
}

.tech-card:hover {
    transform: translateY(-5px);
    border-color: var(--digital-blue);
}

footer {
    background-color: #111;
    border-top: 1px solid var(--titan-gray);
    padding: 50px 0;
    margin-top: 50px;
}

/* 3D/Animation placeholders */
.turbine-hero {
    height: 80vh;
    background: radial-gradient(circle at center, #2c3e50 0%, #1a1a1a 100%);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.flow-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.3;
}