body{font-family:'Segoe UI',sans-serif;background-color:#f4f7f9;color:#333;padding:20px}
.container{max-width:700px;margin:0 auto;background:#fff;padding:30px;border-radius:8px;box-shadow:0 4px 15px rgba(0,0,0,0.1)}
h1{color:#0275d8;text-align:center}
.input-row{display:flex;gap:15px;margin-bottom:20px}
.input-group{flex:1}.dynamic-field{transition:all 0.3s ease}
label{display:block;font-weight:bold;margin-bottom:5px;color:#555;font-size:14px}
input[type="number"],select{width:100%;padding:10px;border:1px solid #ccc;border-radius:4px;box-sizing:border-box;font-size:16px}
.btn-calc{display:block;width:100%;background-color:#0275d8;color:#fff;padding:12px;border:none;border-radius:4px;font-size:16px;font-weight:bold;cursor:pointer}
.btn-export{display:block;width:100%;background-color:#5cb85c;color:#fff;padding:10px;border:none;border-radius:4px;font-size:14px;font-weight:bold;cursor:pointer;margin-top:15px}
.results{margin-top:30px;padding:20px;background-color:#e9ecef;border-left:5px solid #0275d8;border-radius:4px;display:none}
.results h2{margin-top:0;border-bottom:2px solid #ccc;padding-bottom:5px}
.results h3{margin:15px 0 5px 0;color:#0275d8;font-size:16px;text-transform:uppercase}
.result-item{margin-bottom:8px;font-size:16px}
.result-val{font-weight:bold;color:#d9534f}
.result-val-gain{font-weight:bold;color:#5cb85c;font-size:18px}
.result-val-beam{font-weight:bold;color:#f0ad4e;font-size:18px}
.info-container{display:flex;align-items:center;justify-content:space-between;gap:20px;background-color:#fff;padding:8px 12px;border:1px solid #ddd;border-radius:4px;margin-top:10px}
.info-text{font-size:13px;color:#555;margin:0;flex:1}
.btn-info{background-color:#17a2b8;color:#fff;border:none;padding:4px 10px;border-radius:4px;font-size:12px;font-weight:bold;cursor:pointer}
.schema-impedenza{background-color:#fff;border:1px solid #dcdcdc;border-radius:6px;padding:10px;margin:15px 0}
.schema-impedenza svg {display:block;width:100%;height:auto;max-height:320px;margin:0 auto}
.modal{display:none;position:fixed;z-index:1000;left:0;top:0;width:100%;height:100%;background-color:rgba(0,0,0,0.5);overflow-y:auto}
.modal-content{background-color:#fff;margin:10% auto;padding:25px;border-radius:8px;width:85%;max-width:500px;position:relative}
.close-modal{position:absolute;right:15px;top:10px;font-size:28px;font-weight:bold;color:#aaa;cursor:pointer}