:root {
        --bg-color: #0a0a0a;
        --text-color: #e0e0e0;
        --accent-red: #d32f2f;
        --folder-buff: #f0e68c;
    }
    
    body {
        background-color: var(--bg-color);
        color: var(--text-color);
        font-family: 'Courier New', Courier, monospace;
        margin: 0;
        padding: 0;
        line-height: 1.6;
    }

    /* Gun Barrel Opening Effect */
    .gun-barrel {
        height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        text-align: center;
        background: radial-gradient(circle, transparent 20%, #000 21%, #000 100%);
    }

    .container {
        max-width: 800px;
        margin: 0 auto;
        padding: 20px;
    }

    h1, h2, h3 {
        text-transform: uppercase;
        letter-spacing: 3px;
    }

    h1 {
        font-size: 2.5rem;
        border-bottom: 2px solid var(--accent-red);
        display: inline-block;
        padding-bottom: 10px;
    }

    .stamp {
        color: var(--accent-red);
        border: 3px solid var(--accent-red);
        display: inline-block;
        padding: 10px 20px;
        font-weight: bold;
        transform: rotate(-10deg);
        font-size: 1.5rem;
        margin-bottom: 30px;
        opacity: 0.8;
    }

    .mission-dossier {
        background-color: #1a1a1a;
        border: 1px solid #333;
        padding: 30px;
        margin-top: 20px;
        box-shadow: 0 0 15px rgba(0,0,0,0.8);
    }

    .skill-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 15px;
    }

    @media (min-width: 600px) {
        .skill-grid { grid-template-columns: 1fr 1fr; }
    }

    .skill-card {
        border-left: 4px solid var(--accent-red);
        background: #111;
        padding: 15px;
    }

    .btn {
        display: block;
        width: 100%;
        padding: 15px;
        background: var(--accent-red);
        color: white;
        text-align: center;
        text-decoration: none;
        text-transform: uppercase;
        font-weight: bold;
        margin-top: 20px;
        transition: background 0.3s;
    }

    .btn:hover { background: #b71c1c; }