:root {
            --primary: #47B25B; /* Vaša brandová zelená */
            --secondary: #111827; 
            --bg-light: #F9FAFB;
            --white: #ffffff;
            --text-muted: #6B7280;
            --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: 'Inter', -apple-system, sans-serif; color: var(--secondary); background: var(--white); line-height: 1.6; }

        header { padding: 1.2rem 8%; display: flex; justify-content: space-between; align-items: center; background: rgba(255,255,255,0.9); backdrop-filter: blur(10px); position: sticky; top: 0; z-index: 1000; border-bottom: 1px solid rgba(0,0,0,0.05); }
        .logo { font-size: 1.5rem; font-weight: 800; color: var(--primary); text-decoration: none; }

        .container { max-width: 800px; margin: 4rem auto; padding: 0 2rem; }
        .header-section { text-align: center; margin-bottom: 3rem; }
        .header-section h1 { font-size: 2.5rem; font-weight: 900; margin-bottom: 1rem; }
        .header-section p { color: var(--text-muted); font-size: 1.1rem; }

        .contact-card { background: var(--white); padding: 2.5rem; border-radius: 24px; box-shadow: var(--shadow); border: 1px solid rgba(0,0,0,0.05); }
        
        .form-group { margin-bottom: 1.5rem; }
        label { display: block; font-weight: 600; margin-bottom: 0.5rem; font-size: 0.9rem; }
        input, textarea { width: 100%; padding: 0.8rem 1rem; border-radius: 12px; border: 1px solid #E5E7EB; font-family: inherit; font-size: 1rem; transition: 0.3s; }
        input:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(71, 178, 91, 0.1); }
        
        .checkbox-group { display: flex; gap: 0.75rem; align-items: flex-start; margin: 2rem 0; font-size: 0.85rem; color: var(--text-muted); }
        .checkbox-group input { width: auto; margin-top: 0.3rem; cursor: pointer; }

        .btn-submit { background: var(--primary); color: var(--white); width: 100%; padding: 1rem; border: none; border-radius: 12px; font-size: 1rem; font-weight: 700; cursor: pointer; transition: 0.3s; display: flex; justify-content: center; align-items: center; gap: 0.5rem; }
        .btn-submit:hover { opacity: 0.9; transform: translateY(-2px); }
        .btn-submit:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

        .msg { display: none; margin-top: 1.5rem; padding: 1rem; border-radius: 12px; text-align: center; font-weight: 600; }
        .msg-success { background: #ECFDF5; color: #059669; }
        .msg-error { background: #FEF2F2; color: #DC2626; }

        .hidden { display: none; }
        .animate-spin { animation: spin 1s linear infinite; }
        @keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

        footer { padding: 4rem 8% 2rem; background: var(--secondary); color: #fff; text-align: center; margin-top: 4rem; }
        .footer-links { margin-bottom: 2rem; display: flex; justify-content: center; gap: 2rem; flex-wrap: wrap; }
        .footer-links a { color: #9CA3AF; text-decoration: none; font-size: 0.85rem; transition: 0.2s; }
        .footer-links a:hover { color: #fff; }