@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');
:root { --colore-primario: #2563eb; --colore-primario-hover: #1d4ed8; --colore-successo: #16a34a; --colore-errore: #dc2626; --sfondo-pagina: #f3f4f6; --sfondo-card: #ffffff; --testo-principale: #1f2937; --testo-secondario: #6b7280; --bordo: #d1d5db; }
html { box-sizing: border-box; }
*, *:before, *:after { box-sizing: inherit; }
html, body { width: 100%; margin: 0; padding: 0; overflow-x: hidden; }
body { font-family: 'Inter', sans-serif; background-color: var(--sfondo-pagina); color: var(--testo-principale); display: flex; flex-direction: column; align-items: center; justify-content: flex-start; min-height: 100vh; padding: 3rem 1rem; }
.form-container { background-color: var(--sfondo-card); padding: 2.5rem; border-radius: 0.75rem; box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1); width: 100%; max-width: 450px; }
.form-container-large { max-width: 800px; }
.form-header { text-align: center; margin-bottom: 2rem; }
.form-header h1 { font-size: 1.875rem; font-weight: 700; margin: 0; }
.form-header p { color: var(--testo-secondario); margin-top: 0.5rem; }
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-weight: 500; margin-bottom: 0.5rem; }
.form-group input, .form-group select { width: 100%; padding: 0.75rem; border: 1px solid var(--bordo); border-radius: 0.375rem; transition: border-color 0.2s; font-family: inherit; font-size: 1rem; }
.form-group input:focus, .form-group select:focus { outline: none; border-color: var(--colore-primario); box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-bottom: 1.5rem; }
.form-grid .full-width { grid-column: 1 / -1; }
.btn { width: 100%; padding: 0.85rem; border: none; border-radius: 0.375rem; background-color: var(--colore-primario); color: white; font-size: 1rem; font-weight: 600; cursor: pointer; transition: background-color 0.2s; }
.btn:hover { background-color: var(--colore-primario-hover); }
.error-message { color: var(--colore-errore); font-size: 0.875rem; margin-top: 0.25rem; min-height: 1em; }
.success-message { padding: 1rem; margin-bottom: 1.5rem; background-color: #d1fae5; color: var(--colore-successo); border-left: 4px solid var(--colore-successo); border-radius: 0.375rem; }
.form-footer { text-align: center; margin-top: 2rem; color: var(--testo-secondario); font-size: 0.875rem; }
.form-footer a { color: var(--colore-primario); text-decoration: none; font-weight: 500; }
.form-footer a:hover { text-decoration: underline; }
#password-strength-bar { width: 100%; height: 5px; background-color: #e5e7eb; border-radius: 5px; margin-top: 5px; overflow: hidden; }
#password-strength-fill { height: 100%; border-radius: 5px; transition: width 0.3s, background-color 0.3s; }
#password-strength-text { font-size: 0.8rem; margin-top: 5px; min-height: 1.2em; }
.user-type-selection { display: flex; gap: 1rem; margin-bottom: 2rem; padding-bottom: 2rem; border-bottom: 1px solid var(--bordo); }
.user-type-selection label { flex: 1; display: block; padding: 1rem; border: 2px solid var(--bordo); border-radius: 0.5rem; cursor: pointer; text-align: center; transition: all 0.2s; }
.user-type-selection input[type="radio"] { display: none; }
.user-type-selection input[type="radio"]:checked + label { border-color: var(--colore-primario); background-color: #eff6ff; color: var(--colore-primario); font-weight: 600; }
.hidden-section { display: none; }
.cf-validation-result { font-size: 0.875rem; margin-top: 0.5rem; font-weight: 500; }
.cf-valid { color: var(--colore-successo); }
.cf-invalid { color: var(--colore-errore); }
.checkbox-group-container { border: 1px solid var(--bordo); border-radius: 0.5rem; padding: 1rem; }
.checkbox-group { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.checkbox-label { display: flex; align-items: center; gap: 0.5rem; font-weight: 500; }
.checkbox-label input { width: auto; }
@media (max-width: 768px) {
    .form-grid, .checkbox-group { grid-template-columns: 1fr; }
    .form-container { padding: 1.5rem; }
}