/* ============================================================
   AUTH.CSS — Login e Registrazione Genitore
   Design: form centrato su sfondo scuro, tema ITIS Cardano
   Sistema Cardano Day · ITIS G. Cardano, Pavia
   ============================================================ */

/* ============================================================
   PAGINA — sfondo scuro a tutto schermo
   ============================================================ */

.auth-page {
  min-height: 100vh;
  background: var(--color-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) var(--space-4);
  position: relative;
  overflow: hidden;
}

/* Bagliore arancione sfondo */
.auth-page::before {
  content: '';
  position: fixed;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 500px;
  background: radial-gradient(ellipse, rgba(232,80,10,0.18) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.auth-page::after {
  content: '';
  position: fixed;
  bottom: -10%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(232,80,10,0.07) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ============================================================
   HEADER — logo sopra al form
   ============================================================ */

.auth-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
  position: relative;
  z-index: 1;
  animation: fadeDown 0.5s ease both;
}

.auth-header__logo {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  overflow: hidden;
  background: #ffffff;
  padding: 6px;
  border: 2px solid rgba(232,80,10,0.45);
  box-shadow:
    0 0 0 1px rgba(232,80,10,0.15),
    0 0 40px rgba(232,80,10,0.3),
    0 8px 24px rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-header__logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 50%;
  filter: contrast(1.1) brightness(0.95);
}

.auth-header__name {
  font-size: var(--text-base);
  font-weight: var(--fw-bold);
  color: var(--color-text-on-dark);
  letter-spacing: 0.01em;
}

.auth-header__sub {
  font-size: var(--text-xs);
  color: var(--color-text-on-dark-2);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ============================================================
   CARD FORM — vetro scuro con bordo sottile
   ============================================================ */

.auth-card {
  width: 100%;
  max-width: 440px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
  position: relative;
  z-index: 1;
  animation: fadeUp 0.5s ease 0.1s both;
}

/* Versione più larga per la registrazione */
.auth-card--wide {
  max-width: 520px;
}

.auth-card__title {
  font-size: var(--text-2xl);
  font-weight: var(--fw-black);
  color: var(--color-text-on-dark);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-1);
}

.auth-card__subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-on-dark-2);
  margin-bottom: var(--space-6);
}

/* ============================================================
   ANIMAZIONI
   ============================================================ */

@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   ALERT MINORI
   ============================================================ */

.auth-alert-minori {
  background: rgba(232,80,10,0.12);
  border: 1px solid rgba(232,80,10,0.3);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
  font-size: var(--text-xs);
  color: rgba(255,150,80,0.95);
  line-height: 1.6;
}

/* ============================================================
   CAMPI FORM — versione dark
   ============================================================ */

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}

.form-group:last-child { margin-bottom: 0; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-label {
  font-size: var(--text-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: rgba(255,255,255,0.5);
}

.form-input {
  padding: var(--space-3) var(--space-4);
  background: rgba(255,255,255,0.07);
  border: 1.5px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  color: var(--color-text-on-dark);
  outline: none;
  width: 100%;
  transition: border-color var(--transition-fast),
              background   var(--transition-fast),
              box-shadow   var(--transition-fast);
}

.form-input::placeholder {
  color: rgba(255,255,255,0.25);
}

.form-input:focus {
  border-color: var(--color-primary);
  background: rgba(232,80,10,0.08);
  box-shadow: 0 0 0 3px rgba(232,80,10,0.15);
}

.form-input--error {
  border-color: rgba(220,80,80,0.7);
  box-shadow: 0 0 0 3px rgba(220,38,38,0.12);
}

.form-input--success {
  border-color: rgba(22,163,74,0.6);
}

/* Input con icona destra */
.form-input-wrap {
  position: relative;
}

.form-input-wrap .form-input {
  padding-right: var(--space-10);
}

.form-input-icon {
  position: absolute;
  right: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  color: rgba(255,255,255,0.3);
  font-size: var(--text-lg);
  padding: var(--space-1);
  user-select: none;
  transition: color var(--transition-fast);
}

.form-input-icon:hover { color: rgba(255,255,255,0.7); }

/* Errore */
.form-error {
  font-size: var(--text-xs);
  color: rgba(255,100,100,0.9);
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 4px;
}

/* Alert errore generico */
.alert {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.alert--error {
  background: rgba(220,38,38,0.12);
  color: rgba(255,120,120,0.95);
  border: 1px solid rgba(220,38,38,0.25);
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%       { transform: translateX(-6px); }
  40%       { transform: translateX(6px); }
  60%       { transform: translateX(-4px); }
  80%       { transform: translateX(4px); }
}

.alert--success {
  background: rgba(22,163,74,0.12);
  color: rgba(100,220,130,0.95);
  border: 1px solid rgba(22,163,74,0.25);
}

/* ============================================================
   INDICATORE FORZA PASSWORD
   ============================================================ */

.password-strength {
  margin-top: var(--space-2);
}

.password-strength__bar {
  height: 3px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.1);
  overflow: hidden;
  margin-bottom: 4px;
}

.password-strength__fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-base), background var(--transition-base);
  width: 0%;
}

.password-strength__fill--weak   { background: rgba(220,60,60,0.8);  width: 33%; }
.password-strength__fill--medium { background: rgba(217,119,6,0.9);  width: 66%; }
.password-strength__fill--strong { background: rgba(22,163,74,0.9);  width: 100%; }

.password-strength__label {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.4);
}

/* ============================================================
   CHECKBOX RICORDAMI
   ============================================================ */

.form-check {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
}

.form-check__left {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
}

.form-check input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.form-check label {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.5);
  cursor: pointer;
}

.privacy-check {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: .8rem .95rem;
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.03);
  font-size: var(--text-sm);
  line-height: 1.5;
  color: rgba(255,255,255,0.75);
  cursor: pointer;
  transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.privacy-check:hover {
  border-color: rgba(255,255,255,0.22);
  background: rgba(255,255,255,0.05);
}

.privacy-check input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.privacy-check__box {
  position: relative;
  display: inline-block;
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  margin-top: 2px;
  border: 1.5px solid rgba(255,255,255,0.3);
  border-radius: 6px;
  background: rgba(255,255,255,0.04);
  transition: all var(--transition-fast);
}

.privacy-check__box::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 6px;
  height: 12px;
  border-right: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(45deg);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.privacy-check input[type="checkbox"]:checked + .privacy-check__box {
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(96, 86, 247, 0.15);
}

.privacy-check input[type="checkbox"]:checked + .privacy-check__box::after {
  opacity: 1;
}

.privacy-check input[type="checkbox"]:focus-visible + .privacy-check__box {
  outline: 2px solid rgba(255,255,255,0.85);
  outline-offset: 2px;
}

.privacy-check--invalid {
  border-color: rgba(255, 120, 120, 0.7);
  background: rgba(255, 86, 86, 0.05);
  box-shadow: 0 0 0 3px rgba(255, 86, 86, 0.08);
}

.privacy-check__text {
  flex: 1;
}

.privacy-error {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  color: rgba(255, 120, 120, 0.95);
  background: rgba(220,38,38,0.12);
  border: 1px solid rgba(220,38,38,0.25);
  border-radius: var(--radius-md);
  padding: .55rem .7rem;
  line-height: 1.4;
}

/* Link */
.form-link {
  color: var(--color-primary-light);
  font-weight: var(--fw-semibold);
  font-size: var(--text-sm);
  transition: opacity var(--transition-fast);
}
.form-link:hover { opacity: 0.8; }

/* ============================================================
   PULSANTE SUBMIT
   ============================================================ */

.btn-submit {
  width: 100%;
  padding: var(--space-4);
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--fw-bold);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background   var(--transition-fast),
              box-shadow   var(--transition-fast),
              transform    var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  box-shadow: 0 4px 20px rgba(232,80,10,0.3);
}

.btn-submit:hover:not(:disabled) {
  background: var(--color-primary-dark);
  box-shadow: 0 6px 24px rgba(232,80,10,0.45);
  transform: translateY(-1px);
}

.btn-submit:active:not(:disabled) { transform: translateY(0); }

.btn-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-submit .spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: none;
}

.btn-submit.is-loading .spinner  { display: block; }
.btn-submit.is-loading .btn-text { display: none; }

@keyframes spin { to { transform: rotate(360deg); } }

/* Divisore */
.form-divider {
  text-align: center;
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.2);
  margin: var(--space-5) 0;
  position: relative;
}

.form-divider::before,
.form-divider::after {
  content: '';
  position: absolute;
  top: 50%;
  width: calc(50% - 28px);
  height: 1px;
  background: rgba(255,255,255,0.1);
}

.form-divider::before { left: 0; }
.form-divider::after  { right: 0; }

/* Footer form */
.form-footer {
  text-align: center;
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.4);
  margin-top: var(--space-5);
}

/* Link torna alla home */
.auth-back {
  margin-top: var(--space-5);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.3);
  text-align: center;
  position: relative;
  z-index: 1;
  animation: fadeUp 0.5s ease 0.2s both;
}

.auth-back a {
  color: rgba(255,255,255,0.5);
  transition: color var(--transition-fast);
}

.auth-back a:hover { color: rgba(255,255,255,0.9); }

/* ============================================================
   STEPPER REGISTRAZIONE
   ============================================================ */

.stepper {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: var(--space-6);
}

.stepper__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  flex: 1;
  position: relative;
}

.stepper__step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 16px;
  left: 50%;
  width: 100%;
  height: 1px;
  background: rgba(255,255,255,0.1);
  z-index: 0;
}

.stepper__step--done::after   { background: rgba(22,163,74,0.5); }
.stepper__step--active::after { background: rgba(232,80,10,0.4); }

.stepper__circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: var(--fw-bold);
  position: relative;
  z-index: 1;
  transition: background var(--transition-base);
}

.stepper__step--todo   .stepper__circle { background: rgba(255,255,255,0.1); color: rgba(255,255,255,0.3); }
.stepper__step--active .stepper__circle { background: var(--color-primary); color: #fff; box-shadow: 0 0 12px rgba(232,80,10,0.4); }
.stepper__step--done   .stepper__circle { background: rgba(22,163,74,0.8); color: #fff; }

.stepper__label {
  font-size: 10px;
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.25);
  text-align: center;
}

.stepper__step--active .stepper__label { color: var(--color-primary-light); }
.stepper__step--done   .stepper__label { color: rgba(100,200,130,0.7); }

/* ============================================================
   SEZIONE TITOLO STEP
   ============================================================ */

.form-section-title {
  font-size: var(--text-sm);
  font-weight: var(--fw-bold);
  color: rgba(255,255,255,0.7);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

/* ============================================================
   OTP INPUT
   ============================================================ */

.otp-wrap {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
  margin: var(--space-5) 0;
}

.otp-input {
  width: 52px;
  height: 60px;
  text-align: center;
  font-size: var(--text-2xl);
  font-weight: var(--fw-bold);
  background: rgba(255,255,255,0.07);
  border: 1.5px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  color: var(--color-text-on-dark);
  outline: none;
  transition: border-color var(--transition-fast),
              box-shadow   var(--transition-fast),
              background   var(--transition-fast);
}

.otp-input:focus {
  border-color: var(--color-primary);
  background: rgba(232,80,10,0.08);
  box-shadow: 0 0 0 3px rgba(232,80,10,0.15);
}

.otp-input.is-filled {
  border-color: var(--color-primary);
  color: var(--color-primary-light);
}

.otp-resend {
  text-align: center;
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.3);
  margin-top: var(--space-3);
}

.otp-resend__note {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.2);
  margin-top: var(--space-1);
  display: block;
}

/* ============================================================
   SCHERMATA COMPLETATO (Step 3)
   ============================================================ */

.reg-success {
  text-align: center;
  padding: var(--space-2) 0;
}

.reg-success__icon {
  font-size: 3rem;
  margin-bottom: var(--space-4);
  display: block;
}

.reg-success__title {
  font-size: var(--text-2xl);
  font-weight: var(--fw-black);
  color: var(--color-text-on-dark);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}

.reg-success__text {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
  max-width: 340px;
  margin: 0 auto var(--space-6);
}

.reg-success__info {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  margin-bottom: var(--space-6);
  text-align: left;
}

.reg-success__info-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.reg-success__info-row:last-child { border-bottom: none; }

.reg-success__info-label {
  font-size: var(--text-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.3);
}

.reg-success__info-value {
  font-size: var(--text-sm);
  font-weight: var(--fw-semibold);
  color: rgba(255,255,255,0.8);
}

.reg-success__badge {
  display: inline-block;
  background: rgba(232,80,10,0.2);
  color: var(--color-primary-light);
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--fw-bold);
  border: 1px solid rgba(232,80,10,0.3);
}

/* Badge AUTO cap/città */
.auto-badge {
  display: inline-block;
  margin-left: var(--space-1);
  font-size: 10px;
  background: rgba(232,80,10,0.15);
  color: var(--color-primary-light);
  padding: 1px 6px;
  border-radius: var(--radius-full);
  text-transform: none;
  letter-spacing: 0;
  font-weight: var(--fw-semibold);
  border: 1px solid rgba(232,80,10,0.2);
  vertical-align: middle;
}

/* Match password */
#pwd-match-msg { font-size: var(--text-xs); margin-top: 4px; display: block; }

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 520px) {
  .auth-card { padding: var(--space-6) var(--space-5); }
  .form-row  { grid-template-columns: 1fr; }
  .otp-input { width: 44px; height: 52px; font-size: var(--text-xl); }
}