/* === STYLE: CORPORATE B2B === */
        :root {
            --navy: #0F172A;       
            --blue: #0ea5e9;       
            --concrete: #f1f5f9;   
            --steel: #334155;      
            --white: #ffffff;
        }

        html { scroll-behavior: smooth; }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        
        body { 
            font-family: 'Barlow', sans-serif; 
            background-color: var(--concrete); 
            color: var(--navy); 
            line-height: 1.6;
        }
        
        h1, h2, h3 { font-weight: 800; text-transform: uppercase; letter-spacing: -0.5px; color: var(--navy); }
        a { text-decoration: none; transition: 0.3s; }
        
        .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        /* === HEADER === */
        header { 
            background: var(--white); 
            border-bottom: 3px solid var(--navy);
            padding: 15px 0; 
            position: sticky; top: 0; z-index: 100;
            box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
        }
        nav { display: flex; justify-content: space-between; align-items: center; position: relative; }
        
        .logo { font-size: 1.5rem; font-weight: 800; color: var(--navy); display: flex; align-items: center; gap: 10px; }
        .logo img { height: 42px; width: auto; transition: 0.3s; }
        .logo-sub { font-size: 0.7rem; color: var(--steel); font-weight: 400; display: block; letter-spacing: 1px; }

        /* Desktop menu */
        .nav-links { display: flex; gap: 30px; align-items: center; }
        .nav-links a { font-weight: 600; color: var(--steel); font-size: 0.95rem; text-transform: uppercase; }
        .nav-links a:hover { color: var(--blue); }
        
        /* Logo uvnitř menu (defaultně skryté) */
        .nav-logo-mobile { display: none; }

        /* Menu Toggle Button (Sandwich) - defaultně skryté na PC */
        .menu-toggle { display: none; background: none; border: none; font-size: 1.8rem; color: var(--navy); cursor: pointer; }

        .btn-header {
            background: var(--navy); color: white !important;
            padding: 10px 25px; border-radius: 2px;
        }
        .btn-header:hover { background: var(--blue); }

        /* === HERO === */
        .hero { 
            background: linear-gradient(rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.7)), url('img/elektro-volf-sro-elektro-a-stavba.jpg');
            background-size: cover; background-position: center 75%;
            padding: 120px 0; color: white;
            text-align: center;
        }
        
        .hero h1 { color: white; font-size: 3.5rem; margin-bottom: 20px; line-height: 1.1; }
        .hero p { font-size: 1.25rem; color: #cbd5e1; max-width: 800px; margin: 0 auto 40px auto; font-weight: 300; }
        
        .btn-primary {
            display: inline-block; background: var(--blue); color: white;
            padding: 18px 40px; font-weight: 700; text-transform: uppercase;
            border: none; cursor: pointer; border-radius: 2px; font-size: 1.1rem;
        }
        .btn-primary:hover { background: white; color: var(--navy); }

        /* === FILTER BAR === */
        .filter-bar {
            background: var(--navy); color: white; padding: 40px 0; margin-top: -50px; position: relative;
            box-shadow: 0 10px 25px rgba(0,0,0,0.2);
        }
        .filter-grid { display: flex; justify-content: space-around; text-align: center; flex-wrap: wrap; gap: 20px; }
        .filter-item { flex: 1; min-width: 200px; }
        .filter-item i { font-size: 2rem; color: var(--blue); margin-bottom: 15px; }
        .filter-item strong { display: block; font-size: 1.1rem; margin-bottom: 5px; }
        .filter-item span { color: #94a3b8; font-size: 0.9rem; }

        /* === SERVICES === */
        section { padding: 100px 0; scroll-margin-top: 100px; }
        
        .section-header { text-align: left; margin-bottom: 60px; border-left: 5px solid var(--blue); padding-left: 30px; }
        .section-header h2 { font-size: 2.5rem; }
        .section-header p { color: var(--steel); font-size: 1.1rem; margin-top: 10px; max-width: 600px; }

        .services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 30px; }
        
        .service-card {
            background: white; padding: 40px; border: 1px solid #e2e8f0;
            transition: 0.3s; position: relative; overflow: hidden;
        }
        .service-card::before {
            content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px; background: var(--navy); transition: 0.3s;
        }
        .service-card:hover { transform: translateY(-5px); box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1); }
        .service-card:hover::before { background: var(--blue); }
        
        .service-card h3 { font-size: 1.5rem; margin-bottom: 20px; display: flex; align-items: center; justify-content: space-between; }
        .service-card h3 i { color: var(--blue); font-size: 1.2rem; }
        .service-card ul { margin-top: 20px; border-top: 1px solid #e2e8f0; padding-top: 20px; list-style: none; }
        .service-card li { margin-bottom: 10px; color: var(--steel); display: flex; align-items: center; gap: 10px; font-size: 0.95rem; }
        .service-card li::before { content: '■'; color: var(--blue); font-size: 0.6rem; }

        /* === CONTACT FORM === */
        .contact-section { background: #e2e8f0; }
        .contact-container { display: grid; grid-template-columns: 1fr 1.5fr; gap: 0; box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25); }
        
        .contact-info { background: var(--navy); color: white; padding: 30px; }
        .contact-form { background: white; padding: 30px; }
        
        .contact-item { margin-bottom: 40px; }
        .contact-item label { display: block; color: var(--blue); font-size: 0.8rem; font-weight: 700; text-transform: uppercase; margin-bottom: 5px; }
        .contact-item p, .contact-item a { font-size: 1.2rem; color: white; font-weight: 400; }

        .form-group { margin-bottom: 20px; }
        label { display: block; font-weight: 600; color: var(--navy); margin-bottom: 8px; font-size: 0.9rem; }
        input, textarea { 
            width: 100%; padding: 12px 15px; 
            border: 1px solid #cbd5e1; background: #f8fafc;
            font-family: inherit; color: var(--navy); border-radius: 2px;
        }
        input:focus, textarea:focus { outline: none; border-color: var(--blue); background: white; }
        
        .submit-btn {
            background: var(--navy); color: white; padding: 15px 40px; border: none; font-weight: 700;
            text-transform: uppercase; cursor: pointer; letter-spacing: 1px; width: 100%; transition: 0.3s;
        }
        .submit-btn:hover { background: var(--blue); }

        .msg { padding: 15px; margin-bottom: 20px; text-align: center; font-weight: 600; }
        .msg-ok { background: #dcfce7; color: #166534; }
        .msg-err { background: #fee2e2; color: #991b1b; }

        /* COOKIES STYLING */
        #cookie-banner {
            position: fixed; 
            bottom: 0; 
            left: 0;
            width: 100%; 
            background: var(--navy); 
            color: white; 
            padding: 20px;
            display: flex; 
            flex-direction: column;
            justify-content: center; 
            align-items: center; 
            gap: 15px; 
            z-index: 2000;
            box-shadow: 0 -5px 25px rgba(0,0,0,0.3);
            border-top: 4px solid var(--blue);
            
            /* Animace: Výchozí stav je "schováno dole" */
            transform: translateY(100%);
            transition: transform 0.5s ease-in-out;
        }
        
        /* Třída pro zobrazení (vyjetí) */
        #cookie-banner.visible {
            transform: translateY(0);
        }

        .cookie-content { text-align: center; max-width: 800px; }
        .cookie-content h4 { color: var(--blue); margin-bottom: 5px; text-transform: uppercase; font-size: 1rem; }
        .cookie-content p { font-size: 0.9rem; color: #cbd5e1; margin: 0; }

        .cookie-buttons { display: flex; gap: 15px; margin-top: 10px; }
        
        .btn-cookie-agree {
            background: var(--blue); color: white; border: none;
            padding: 10px 20px; font-weight: 700; text-transform: uppercase;
            cursor: pointer; border-radius: 2px; font-size: 0.85rem;
        }
        .btn-cookie-agree:hover { background: white; color: var(--navy); }

        .btn-cookie-essential {
            background: transparent; color: #cbd5e1; border: 1px solid #cbd5e1;
            padding: 10px 20px; font-weight: 600; text-transform: uppercase;
            cursor: pointer; border-radius: 2px; font-size: 0.85rem;
        }
        .btn-cookie-essential:hover { border-color: white; color: white; }

        footer { background: var(--navy); color: #64748b; padding: 40px 0; text-align: center; font-size: 0.9rem; border-top: 1px solid #1e293b; }

        /* JS COUNTER STYLING */
        .counter-box { background: var(--concrete); padding: 30px 20px; text-align: center; border-bottom: 4px solid var(--blue); }
        .counter-val { font-size: 2.5rem; color: var(--navy); font-weight: 800; display: block; }
        .counter-text { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 1px; color: var(--steel); font-weight: 600; margin-top: 5px; }

        /* === GDPR MODAL STYLING (NEW) === */
        #gdprModal {
            display: none; 
            position: fixed; z-index: 3000; left: 0; top: 0;
            width: 100%; height: 100%; overflow: auto;
            background-color: rgba(0,0,0,0.8);
            justify-content: center; align-items: center;
        }
        .modal-content {
            background-color: var(--white);
            margin: auto;
            width: 90%; max-width: 700px;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
            border-radius: 2px;
            animation: fadeIn 0.3s;
        }
        .modal-header {
            background: var(--navy); color: white; padding: 15px 20px;
            display: flex; justify-content: space-between; align-items: center;
        }
        .modal-header h3 { color: white; margin: 0; font-size: 1.2rem; }
        .modal-close { cursor: pointer; font-size: 1.5rem; color: #cbd5e1; }
        .modal-close:hover { color: white; }
        .modal-body { padding: 30px; line-height: 1.6; font-size: 0.95rem; color: var(--steel); }
        .modal-body h4 { color: var(--navy); margin-top: 20px; margin-bottom: 10px; font-size: 1rem; }
        .modal-body ul { margin-left: 20px; margin-bottom: 15px; }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(-20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* === RESPONZIVITA (MOBIL) === */
        @media (max-width: 900px) {
            header { position: relative; }

            /* Menší odsazení sekcí a scroll-margin pro mobil */
            section { 
                padding: 45px 0; /* Zmenšeno ze 100px */
                scroll-margin-top: 80px; /* Upraveno, aby sekce nezačínala moc vysoko/nízko */
            }

            /* Zobrazení tlačítka sendviče */
            .menu-toggle { 
                display: block; 
                position: relative;
                z-index: 200; /* Musí být nad overlay menu */
            }

            /* Úprava layoutu Navigace - Logo vlevo, menu vpravo */
            nav { 
                justify-content: space-between; /* Logo vlevo, tlačítko vpravo */
                flex-wrap: nowrap; 
            }

            .logo { 
                width: auto; 
                margin-bottom: 0; 
                justify-content: flex-start; 
            }
            .logo img { height: 41px; } /* Větší logo */

            /* Menu skryté v základu */
            .nav-links { 
                display: none; 
                /* Fullscreen nastavení */
                position: fixed;
                top: 0; left: 0;
                width: 100%; height: 100vh;
                background: white;
                
                flex-direction: column; 
                align-items: center;
                
                /* 1. Zarovnat obsah odshora (nikoliv na střed) */
                justify-content: flex-start; 

                /* 2. Odsazení: 100px shora, 20px zprava, 20px zdola, 20px zleva */
                padding: 100px 20px 20px 20px;
                
                z-index: 150; 
                border-top: none;
                margin-top: 0;
            }
            
            /* Třída pro zobrazení menu po kliknutí */
            .nav-links.active { display: flex; }
            
            /* Logo uvnitř otevřeného menu */
            .nav-logo-mobile {
                display: block !important;
                height: 50px;
                margin-bottom: 40px;
            }

            .nav-links a { display: block; padding: 15px; font-size: 1.2rem; }

            /* Hero sekce úpravy */
            .hero { padding: 80px 0; } 
            .hero h1 { font-size: 2.0rem; word-wrap: break-word; }
            
            .contact-container { grid-template-columns: 1fr; }
            .filter-grid { flex-direction: column; }
            .counter-box { margin-bottom: 20px; }
            
            /* Cookie lišta na mobilu */
            #cookie-banner { flex-direction: column; text-align: center; }
            .cookie-buttons { width: 100%; justify-content: center; }
        }