:root {
            --se-green: #3dcd58;
            --se-black: #000000;
            --white: #ffffff;
            --surface: #f3f4f7;
            --border: #dfe1e6;
        }

        body { font-family: 'Roboto', sans-serif; background: #cfd8dc; margin: 0; padding: 20px; display: flex; justify-content: center; }

        /* --- FIXED BACK BUTTON --- */
        .fixed-back-btn {
            position: fixed; top: 30px; left: 30px; width: 50px; height: 50px;
            background: #ffffff; border: 2px solid var(--se-green); border-radius: 50%;
            display: flex; align-items: center; justify-content: center;
            color: var(--se-green); text-decoration: none; z-index: 2500;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }
        .fixed-back-btn:hover { background: var(--se-green); color: #fff; transform: scale(1.1) rotate(-10deg); box-shadow: 0 8px 20px rgba(61, 205, 88, 0.4); }

        /* --- MAIN APP CONTAINER --- */
        .app-container { width: 100%; max-width: 1000px; background: var(--white); box-shadow: 0 25px 50px rgba(0,0,0,0.3); border-radius: 4px; overflow: hidden; border-top: 8px solid var(--se-green);margin-bottom: 100px; }
        header { display: flex; justify-content: space-between; align-items: center; padding: 18px 30px; border-bottom: 1px solid #eee; }
        .logo { font-family: 'Roboto Condensed'; font-size: 26px; text-transform: uppercase; font-weight: 700; color: #000; letter-spacing: -1px; }
        .logo span { color: var(--se-green); }

        .main-title { background: var(--se-black); color: white; padding: 30px; text-align: center; }
        .main-title h1 { margin: 0; font-family: 'Roboto Condensed'; text-transform: uppercase; font-size: 28px; letter-spacing: 1px; }
        .reference-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-left: auto;
            padding: 8px 14px;
            border: 1px solid var(--se-green);
            border-radius: 4px;
            color: var(--se-green);
            font-family: 'Roboto', sans-serif;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.5px;
            text-decoration: none;
            text-transform: uppercase;
            transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
        }
        .reference-link svg {
            width: 15px;
            height: 15px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .reference-link:hover {
            background: var(--se-green);
            color: var(--se-black);
            transform: translateY(-2px);
        }
        .reference-link:focus-visible {
            outline: 3px solid rgba(61, 205, 88, 0.35);
            outline-offset: 3px;
        }

        /* --- TAB NAVIGATION --- */
        .tab-nav { display: flex; align-items: center; background: #1a1a1a; padding: 0 20px; gap: 20px; }
        .phase-tabs { display: flex; align-self: stretch; gap: 10px; }
        .tab-btn { 
            background: none; border: none; color: #ffffff; padding: 15px 25px; 
            font-family: 'Roboto Condensed'; font-weight: 700; text-transform: uppercase; 
            cursor: pointer; border-bottom: 3px solid transparent; transition: 0.3s;
            font-size: 16px;
        }
        .tab-btn.active { color: var(--se-green); border-bottom-color: var(--se-green); background: rgba(61,205,88,0.05); }

        /* --- DATA TABLE --- */
        .table-section { display: none; padding: 20px; animation: fadeIn 0.4s ease; }
        .table-section.active { display: block; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

        .data-table { width: 100%; border-collapse: collapse; border-radius: 8px; overflow: hidden; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
        .data-table th { background: #333; color: white; text-transform: uppercase; font-size: 11px; padding: 15px; letter-spacing: 1px; text-align: center; }
        .data-table th.kva-col { background: var(--se-green); color: #000; font-weight: 800; width: 120px; }
        .data-table tr { border-bottom: 1px solid #eee; transition: 0.3s; }
        .data-table td { padding: 12px; text-align: center; font-family: 'JetBrains Mono'; font-weight: 600; color: #333; font-size: 15px; }
        
        /* THE PREMIUM HOVER */
        .data-table tr:hover { 
            background: #fafffa; 
            transform: scale(1.01); 
            box-shadow: 0 5px 15px rgba(61,205,88,0.15);
            z-index: 5;
            position: relative;
            border-bottom-color: var(--se-green);
        }
        .data-table tr:hover td:first-child { color: var(--se-green); }

        .section-header { font-family: 'Roboto Condensed'; font-weight: 700; color: #666; margin-bottom: 15px; text-transform: uppercase; font-size: 13px; display: flex; align-items: center; gap: 10px; }
        .section-header::after { content: ""; flex: 1; height: 1px; background: #eee; }

        @media (max-width: 600px) {
            .fixed-back-btn { top: 15px; left: 15px; width: 40px; height: 40px; }
            .data-table td { font-size: 13px; padding: 8px; }
            .tab-nav { align-items: stretch; flex-direction: column; gap: 0; padding: 0 15px 15px; }
            .phase-tabs { justify-content: center; }
            .tab-btn { flex: 1; padding-inline: 10px; }
            .reference-link { width: 100%; box-sizing: border-box; margin-left: 0; }
        }