/* REGISTER PAGE - CSS PULITO E FUNZIONANTE */

body {
  background: var(--gradient-light);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  margin: 0;
}

/* CONTAINER PRINCIPALE - DIMENSIONATO CORRETTAMENTE */
.auth-container {
  background: var(--surface);
  border-radius: 20px;
  padding: 40px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
  width: 100%;
  max-width: 650px; /* LARGO ABBASTANZA PER DUE CAMPI */
  margin: 0 auto;
}

.auth-container h2 {
  text-align: center;
  color: var(--text-primary);
  margin-bottom: 30px;
  font-size: 2rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* FORM */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ROW CON DUE CAMPI - SPAZIO SUFFICIENTE */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px; /* GAP GENEROSO */
}

/* SINGOLO CAMPO */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0; /* ANTI-OVERFLOW */
}

/* INPUT STYLING */
.form-group input {
  padding: 16px 20px;
  border: 2px solid var(--border-light);
  border-radius: 12px;
  font-size: 1rem;
  background: var(--surface-light);
  color: var(--text-primary);
  transition: all 0.2s ease;
  width: 100%;
  box-sizing: border-box;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary-color);
  background: var(--surface);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.form-group input::placeholder {
  color: var(--text-muted);
}

/* ETICHETTA FACOLTATIVO */
.optional-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
}

/* MESSAGGI DI ERRORE */
.error-message {
  color: var(--danger-color);
  font-size: 0.85rem;
  display: none; /* NASCOSTI DI DEFAULT */
  background: rgba(239, 68, 68, 0.1);
  padding: 8px 12px;
  border-radius: 8px;
  border-left: 3px solid var(--danger-color);
}

.error-message.show {
  display: block;
}

/* MESSAGGIO DI SUCCESSO */
.success-message {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success-color);
  padding: 16px;
  border-radius: 12px;
  border-left: 3px solid var(--success-color);
  margin-bottom: 20px;
  display: none;
}

.success-message.show {
  display: block;
}

/* BOTTONE SUBMIT */
.submit-btn {
  padding: 16px;
  background: var(--gradient);
  color: white;
  border: none;
  border-radius: 12px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-top: 10px;
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* LINK ACCESSO */
.auth-switch {
  text-align: center;
  margin-top: 24px;
  color: var(--text-secondary);
}

.auth-switch a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
}

.auth-switch a:hover {
  text-decoration: underline;
}

/* RESPONSIVE DESIGN */
@media (max-width: 768px) {
  body {
    padding: 16px;
    align-items: flex-start;
    padding-top: 30px;
  }
  
  .auth-container {
    padding: 30px 24px;
    max-width: 100%;
  }
  
  /* SU MOBILE: CAMPI IN COLONNA SINGOLA */
  .form-row {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .auth-container h2 {
    font-size: 1.8rem;
    margin-bottom: 25px;
  }
}

@media (max-width: 480px) {
  body {
    padding: 12px;
    padding-top: 20px;
  }
  
  .auth-container {
    padding: 24px 20px;
    border-radius: 16px;
  }
  
  .form-group input {
    padding: 14px 16px;
    font-size: 0.95rem;
  }
  
  .submit-btn {
    padding: 14px;
    font-size: 1rem;
  }
  
  .auth-container h2 {
    font-size: 1.6rem;
    margin-bottom: 20px;
  }
}