:root{
    --teal:#158a8a;
    --teal-dark:#0f6d6d;
    --label:#5f8f8f;
    --border:#bcdcdc;
    --border-focus:#158a8a;
    --text:#3a3f41;
    --muted:#8a9a9a;
    --green:#7cb342;
    --green-dark:#689f38;
    --error:#d64545;
    --bg:#ffffff;
  }
  *{box-sizing:border-box;}
  body{
    margin:0;
    background:#f2f5f5;
    color:var(--text);
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
    font-size:14px;
    line-height:1.5;
  }
  .page{
    max-width:1160px;
    margin:0 auto;
    padding:32px 24px 64px;
  }
  .layout{
    display:flex;
    align-items:flex-start;
    gap:48px;
  }
  .form-col{
    flex:1 1 auto;
    min-width:0;
    background:var(--bg);
    padding:14px;
  }
  .aside-col{
    flex:0 0 380px;
    position:sticky;
    top:24px;
    align-self:flex-start;
  }
  .aside-col img{
    display:block;
    width:100%;
    height:auto;
    border-radius:10px;
    box-shadow:0 8px 30px rgba(0,0,0,.12);
  }
  .aside-fallback{
    display:none;
    padding:60px 24px;
    text-align:center;
    color:var(--muted);
    background:#e7efef;
    border-radius:10px;
    border:1px dashed var(--border);
  }

  h1{
    color:var(--teal);
    font-size:22px;
    font-weight:700;
    margin:0 0 16px;
  }
  h2{
    color:var(--teal);
    font-size:18px;
    font-weight:700;
    margin:32px 0 16px;
    padding-bottom:4px;
  }
  .intro{
    color:var(--muted);
    margin:0 0 8px;
    max-width:640px;
  }

  .field{margin-bottom:18px;max-width:640px;}
  .field label.control-label{
    display:block;
    font-size:12px;
    font-weight:700;
    color:var(--label);
    margin-bottom:6px;
  }
  .req{color:var(--label);}
  .field .hint{
    font-size:12px;
    color:var(--muted);
    margin:0 0 6px;
  }

  input[type=text],
  input[type=number],
  input[type=email],
  input[type=tel],
  select,
  textarea{
    width:100%;
    padding:10px 12px;
    border:1px solid var(--border);
    border-radius:8px;
    font:inherit;
    color:var(--text);
    background:#fff;
    outline:none;
  }
  input::placeholder,textarea::placeholder{color:#a9b7b7;}
  input:focus,select:focus,textarea:focus{
    border-color:var(--border-focus);
    box-shadow:0 0 0 3px rgba(21,138,138,.12);
  }
  textarea{resize:vertical;min-height:88px;}
  select{
    appearance:none;
    background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23158a8a'/%3E%3C/svg%3E");
    background-repeat:no-repeat;
    background-position:right 12px center;
    padding-right:32px;
  }

  input[type=file]{
    width:100%;
    max-width:640px;
    font:inherit;
    padding:8px;
    border:1px solid var(--border);
    border-radius:8px;
    background:#fff;
  }
  input[type=file]::file-selector-button{
    font:inherit;
    padding:8px 14px;
    margin-right:12px;
    border:1px solid var(--border);
    border-radius:6px;
    background:#eef5f5;
    color:var(--teal-dark);
    cursor:pointer;
  }

  .radio-group{display:flex;flex-direction:column;gap:6px;margin-top:4px;}
  .radio-group label{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    cursor:pointer;
  }
  .radio-group input[type=radio]{accent-color:var(--teal);margin:0;}

  .check{
    display:flex;
    align-items:flex-start;
    gap:8px;
    margin-bottom:10px;
    max-width:640px;
    font-size:13px;
    color:var(--muted);
  }
  .check input[type=checkbox]{accent-color:var(--teal);margin-top:2px;}
  .check a{color:var(--teal);}

  .field-error{
    color:var(--error);
    font-size:12px;
    margin-top:5px;
  }
  .is-invalid input[type=text],
  .is-invalid input[type=number],
  .is-invalid input[type=email],
  .is-invalid input[type=tel],
  .is-invalid select,
  .is-invalid textarea,
  .is-invalid input[type=file],
  input.is-invalid,
  select.is-invalid,
  textarea.is-invalid{
    border-color:var(--error);
  }

  .recaptcha-wrap{margin:20px 0;}

  .actions{margin-top:24px;}
  .btn-submit{
    appearance:none;
    border:0;
    background:var(--green);
    color:#fff;
    font:inherit;
    font-weight:600;
    padding:11px 26px;
    border-radius:6px;
    cursor:pointer;
  }
  .btn-submit:hover{background:var(--green-dark);}
  .btn-submit:disabled{
    background:var(--muted);
    cursor:not-allowed;
  }
  .btn-submit:disabled:hover{background:var(--muted);}

  .btn-spinner{
    display:none;
    width:15px;
    height:15px;
    border:2px solid rgba(255,255,255,.5);
    border-top-color:#fff;
    border-radius:50%;
    vertical-align:middle;
    margin-right:8px;
    animation:girar-spinner .7s linear infinite;
  }

  @keyframes girar-spinner{
    to{transform:rotate(360deg);}
  }

  .overlay-envio{
    display:none;
    position:fixed;
    inset:0;
    background:rgba(242,245,245,.9);
    z-index:1000;
    align-items:center;
    justify-content:center;
    flex-direction:column;
    gap:16px;
    text-align:center;
    padding:24px;
  }
  .overlay-envio.is-visible{display:flex;}
  .overlay-envio .spinner-grande{
    width:46px;
    height:46px;
    border:4px solid var(--border);
    border-top-color:var(--teal);
    border-radius:50%;
    animation:girar-spinner .8s linear infinite;
  }
  .overlay-envio p{
    margin:0;
    font-weight:700;
    color:var(--teal-dark);
  }
  .overlay-envio small{
    color:var(--muted);
    max-width:320px;
  }

  @media (max-width:900px){
    .page{padding:20px 16px 48px;}
    .layout{flex-direction:column;gap:24px;}
    .aside-col{
      position:static;
      flex-basis:auto;
      width:100%;
      order:-1;              /* imagen arriba del formulario */
      max-width:520px;
      margin:0 auto;
    }
  }