:root {
            /* OAG Farbpalette */
            --oag-blue-dark: #2b75b2;
            --oag-blue-mid: #5d97cc;
            --oag-blue-light: #9dc2e5;
            --oag-grey-dark: #4d4d4f;
            
            --bg-body: #f8fafc;
            --bg-alt: #ffffff;
            --text-bold: var(--oag-grey-dark); 
            --text-copy: #5a646e;
            --accent: var(--oag-blue-dark);
            --troubleshoot: #d9534f;
            --card-border: #e2e8f0;
            --radius-master: 40px 0 0 0;
            --section-shadow: 0 15px 35px -10px rgba(0, 0, 0, 0.08);
            --bg-impressions: #f0f4f8; 
        }

        [data-theme="dark"] {
            --bg-body: #121826;
            --bg-alt: #1e293b;
            --text-bold: #f1f5f9;
            --text-copy: #cbd5e1;
            --card-border: #334155;
            --bg-impressions: #1a2234;
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        body { background-color: var(--bg-body); color: var(--text-copy); font-family: 'Inter', sans-serif; overflow-x: hidden; }
        
        /* 100% Breite Container */
        .container { 
            width: 1450px; 
            max-width: none; 
            margin-inline: auto; 
            padding-inline: 4rem; 
        }

        /* HEADER */
        .main-header { position: sticky; top: 0; z-index: 1000; background: var(--bg-alt); }
        .top-bar { background: var(--oag-grey-dark); color: #fff; padding: 0.6rem 0; font-size: 0.8rem; font-weight: 600; }
        .top-bar .container { display: flex; justify-content: flex-end; align-items: center; gap: 2rem; }
        .top-bar a { color: inherit; text-decoration: none; }
        .theme-btn { background: var(--oag-blue-dark); color: #fff; border: none; padding: 0.4rem 1rem; border-radius: 4px; cursor: pointer; font-weight: 800; font-size: 0.7rem; margin-left: 1rem; }

        .nav-wrapper { display: flex; justify-content: space-between; align-items: center; height: 80px; }
        .logo { font-weight: 900; font-size: 1.6rem; color: var(--oag-grey-dark); text-decoration: none; letter-spacing: -1px; }
        .logo span { color: var(--oag-blue-dark); }
        .main-nav ul { display: flex; gap: 2rem; list-style: none; }
        .main-nav a { text-decoration: none; color: var(--text-bold); font-weight: 700; text-transform: uppercase; font-size: 0.85rem; }

        /* SIDEBAR LINKS (SERVICE) */
        .side-actions { position: fixed; left: 0; top: 50%; transform: translateY(-50%); z-index: 2000; display: flex; flex-direction: column; gap: 0.8rem; }
        .action-item { 
            display: flex; align-items: center; background: var(--oag-grey-dark); color: #fff; text-decoration: none; 
            padding: 1rem; border-radius: 0 50px 50px 0; width: 65px; overflow: hidden; transition: 0.4s cubic-bezier(0.2, 1, 0.3, 1);
            box-shadow: 5px 5px 15px rgba(0,0,0,0.1);
        }
        .action-item:hover { width: 240px; background: var(--oag-blue-dark); }
        .action-item.troubleshoot { background: var(--troubleshoot); }
        .action-item .label { margin-left: 1.5rem; font-weight: 800; opacity: 0; white-space: nowrap; }
        .action-item:hover .label { opacity: 1; }

        /* SIDEBAR RECHTS (SOCIALS) - WIEDER DA */
        .social-sidebar { 
            position: fixed; right: 0; top: 50%; transform: translateY(-50%); z-index: 2000; 
            display: flex; flex-direction: column; background: var(--oag-grey-dark); 
            padding: 1.5rem 0.8rem; border-radius: 10px 0 0 40px; gap: 1.2rem; 
            box-shadow: -5px 5px 15px rgba(0,0,0,0.1);
        }
        .social-link { color: #fff; text-decoration: none; font-weight: 900; font-size: 0.9rem; transition: 0.3s; }
        .social-link:hover { color: var(--oag-blue-light); transform: scale(1.2); }

        /* SEKTIONEN */
        .content-section { padding: 6rem 0; background: var(--bg-alt); margin-bottom: 4rem; box-shadow: var(--section-shadow); }
        
        #impressions {
            background: var(--bg-impressions); 
            box-shadow: none; 
            margin-bottom: 0;
            
        }

        .grid { display: grid; gap: 2rem; }
        .grid-6 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
        .grid-8 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }

        .card { 
            background: var(--bg-alt); 
            border: 2px solid var(--card-border); 
            border-radius: var(--radius-master); 
            padding: 3rem 2rem; 
            transition: 0.4s;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
        }
        .card:hover { transform: translateY(-8px); border-color: var(--oag-blue-dark); box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1); }
        .card h3 { color: var(--oag-blue-dark); margin-bottom: 1rem; text-transform: uppercase; }

        .impression-img { 
            height: 250px; background-size: cover; background-position: center; 
            border-radius: var(--radius-master); margin-bottom: 1.5rem; border: 1px solid var(--card-border);
        }

        /* HERO VIDEO */
        .hero-container { 
            position: relative; height: 65vh; background: var(--oag-grey-dark); 
            overflow: hidden; margin-bottom: 4rem;
        }
        #header-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.4; }
        .hero-content { position: relative; z-index: 10; height: 100%; display: flex; flex-direction: column; justify-content: center; align-items: center; color: #fff; text-align: center; }

        /* FOOTER */
        .main-footer { background: var(--oag-grey-dark); color: #fff; padding: 6rem 0 2rem;}
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 4rem; }

        .reveal { opacity: 0; transform: translateY(30px); transition: 0.8s ease-out; }
        .reveal.is-active { opacity: 1; transform: translateY(0); }

        @media (max-width: 1024px) {
            .container { padding-inline: 2rem; }
        }
        @media (max-width: 768px) {
            .side-actions, .social-sidebar { display: none; }
            .footer-grid { grid-template-columns: 1fr; }
        }