/* ============================================================
   Presentazione GestWain — styles
   Pagina con sfondo grigio chiaro a gradiente; header e footer
   bianchi separati dal corpo da un bordo grigio. Accent rosso
   #D61638 estratto dal logo.
   ============================================================ */

:root {
  /* --- Palette --- */
  --color-bg: #f3f4f6;
  --color-text: #1a1a1a;
  --color-muted: #6b7280;
  --color-border: #d1d5db;
  --color-border-focus: var(--color-brand);
  --color-error: #d33;
  --color-error-bg: #fde8e8;
  --color-success: #16794d;
  --color-success-bg: #e6f5ed;
  --color-header: #ffffff;
  --color-header-text: #1a1a1a;
  --color-header-border: #e5e7eb;
  --color-primary: #1a1a1a;
  --color-primary-hover: #000000;
  --color-card-bg: #ffffff;
  --color-card-shadow: rgba(0, 0, 0, 0.06);

  /* --- Brand (estratto dal logo GestWain) --- */
  --color-brand: #D61638;
  --color-brand-hover: #b81230;
  --color-brand-soft: rgba(214, 22, 56, 0.15);
  --color-brand-shadow: rgba(214, 22, 56, 0.25);

  /* --- Geometria --- */
  --radius: 14px;
  --radius-sm: 8px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;

  /* --- Tipografia --- */
  --font-base: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-display: 'Playfair Display', Georgia, "Times New Roman", serif;
  --font-size-base: 16px;
  --font-size-sm: 15px;
  --font-size-md: 18px;
  --font-size-lg: 24px;
  --font-size-xl: 44px;

  /* --- Motion --- */
  --ease-out: cubic-bezier(0.4, 0, 0.2, 1);
  --transition: 0.2s var(--ease-out);

  --max-card-width: 940px;
}

/* ---------- Reset minimo ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

/* L'attributo HTML `hidden` deve avere precedenza su qualsiasi regola di display. */
[hidden] {
  display: none !important;
}

body {
  font-family: var(--font-base);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: linear-gradient(180deg, #f3f4f6 0%, #e7e7eb 100%);
  background-attachment: fixed;
  line-height: 1.5;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ---------- Header ---------- */
.site-header {
  background: var(--color-header);
  border-bottom: 1px solid var(--color-header-border);
  padding: var(--space-7) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
}

.site-header__logo {
  display: block;
  max-width: 420px;
  width: 100%;
  height: auto;
}

/* ---------- Page / layout ---------- */
.page {
  position: relative;
  flex: 1;
  padding: var(--space-6) var(--space-3);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  overflow: hidden;
}

/* ---------- Decorazioni sfondo (puramente estetiche, nascoste su mobile) ---------- */
.page-watermark {
  position: absolute;
  top: 50%;
  left: -5%;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-size: clamp(320px, 55vw, 720px);
  font-weight: 700;
  line-height: 0.8;
  letter-spacing: -0.05em;
  color: rgba(214, 22, 56, 0.04);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.page-decoration {
  position: absolute;
  width: 80px;
  height: auto;
  fill: var(--color-brand);
  opacity: 0.07;
  pointer-events: none;
  z-index: 0;
}

.page-decoration--tr {
  top: 80px;
  right: 5%;
  transform: rotate(18deg);
}

.page-decoration--bl {
  bottom: 80px;
  left: 5%;
  transform: rotate(-22deg);
}

/* ---------- Card ---------- */
.card {
  position: relative;
  z-index: 1; /* sopra alle decorazioni di sfondo */
  width: 100%;
  max-width: var(--max-card-width);
  background: var(--color-card-bg);
  border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
  padding: 56px;
  overflow: hidden;
}

/* Linea brand sottile sopra alla card */
.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-brand);
}

.card__title {
  margin: 0 0 var(--space-3) 0;
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.card__subtitle {
  margin: 0 0 var(--space-6) 0;
  color: var(--color-muted);
  font-size: var(--font-size-md);
  line-height: 1.55;
}

.card--success {
  text-align: center;
}

.card--success .card__title {
  color: var(--color-text);
}

/* ---------- Banners ---------- */
.banner {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-sm);
}

.banner--error {
  background: var(--color-error-bg);
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

/* ---------- Form rows / fields ---------- */
.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.field {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.field--full {
  grid-column: 1 / -1;
}

.field__label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-2);
}

.field__required {
  color: var(--color-brand);
  font-weight: 700;
}

.field__input {
  font-family: inherit;
  font-size: var(--font-size-md);
  color: var(--color-text);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  width: 100%;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.field__input:focus {
  outline: none;
  border-color: var(--color-brand);
  box-shadow: 0 0 0 3px var(--color-brand-soft);
}

.field__input::placeholder {
  color: #9ca3af;
}

/* Stato errore (applicato da JS) */
.field__input.input-error,
.field__input.input-error:focus {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(221, 51, 51, 0.12);
}

/* Campo cellulare con prefisso +39 visivamente attaccato */
.field__phone {
  display: flex;
  align-items: stretch;
}

.field__phone-prefix {
  display: inline-flex;
  align-items: center;
  padding: 0 16px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-right: none;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  color: var(--color-muted);
  font-size: var(--font-size-md);
  font-weight: 500;
  user-select: none;
  white-space: nowrap;
  transition: border-color var(--transition);
}

.field__input--phone {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
  flex: 1;
  min-width: 0;
}

/* Quando il cellulare è in focus, allinea il prefisso */
.field__phone:focus-within .field__phone-prefix {
  border-color: var(--color-brand);
}

/* Quando il cellulare è in errore, anche il prefisso si bordera rosso */
.field__phone:has(.input-error) .field__phone-prefix {
  border-color: var(--color-error);
}

/* Select2 deve avere lo stesso aspetto degli input */
.select2-container--default .select2-selection--single {
  height: auto;
  padding: 14px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-md);
}
.select2-container--default .select2-selection--single .select2-selection__rendered {
  line-height: 1.5;
  color: var(--color-text);
  padding-left: 10px;
}
.select2-container--default .select2-selection--single .select2-selection__placeholder {
  color: #9ca3af;
}
.select2-container--default .select2-selection--single .select2-selection__arrow {
  height: 100%;
  top: 0;
}
.select2-container--default.select2-container--focus .select2-selection--single,
.select2-container--default.select2-container--open .select2-selection--single {
  border-color: var(--color-brand);
  box-shadow: 0 0 0 3px var(--color-brand-soft);
}
.select2-container--default .select2-selection--single.input-error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(221, 51, 51, 0.12);
}
.select2-dropdown {
  border-color: var(--color-border);
}
.select2-container--default .select2-results__option--highlighted[aria-selected] {
  background-color: var(--color-brand);
}

/* ---------- Consensi ---------- */
.consents {
  border: none;
  padding: 0;
  margin: var(--space-5) 0 var(--space-4) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.consents__legend {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0;
  margin-bottom: var(--space-3);
}

.consent {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  cursor: pointer;
  font-size: var(--font-size-sm);
  line-height: 1.4;
}

.consent__check {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  flex-shrink: 0;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.consent__text {
  color: var(--color-text);
}

.consent--master {
  background: #fdf2f4;
  border: 1px solid var(--color-brand-soft);
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  margin-top: var(--space-3);
}

/* ---------- Button ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  font-family: inherit;
  font-size: var(--font-size-md);
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 22px 28px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: background-color var(--transition), transform var(--transition), box-shadow var(--transition);
  margin-top: var(--space-6);
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
}

.btn--primary:hover:not(:disabled) {
  background: var(--color-brand);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px var(--color-brand-shadow);
}

.btn--primary:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: 0 2px 8px var(--color-brand-shadow);
}

.btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.btn__spinner {
  display: none;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.btn[aria-busy="true"] .btn__spinner {
  display: inline-block;
}

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

/* ---------- Legenda finale ---------- */
.form__legend {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  margin: var(--space-4) 0 0 0;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-header);
  color: var(--color-muted);
  border-top: 1px solid var(--color-header-border);
  text-align: center;
  padding: var(--space-5) var(--space-4);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.site-footer__line {
  margin: 0;
}

.site-footer__company {
  color: var(--color-text);
  font-weight: 600;
}

.site-footer a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

.site-footer a:hover {
  color: var(--color-brand);
  text-decoration: underline;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  /* Decorazioni nascoste su mobile (rischio overflow / claustrofobia) */
  .page-watermark,
  .page-decoration {
    display: none;
  }
  .form__row {
    grid-template-columns: 1fr;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
  }
  .card {
    padding: var(--space-5) var(--space-4);
  }
  .card__title {
    font-size: 28px;
  }
  .card__subtitle {
    font-size: var(--font-size-base);
  }
  .field__input {
    padding: 14px 16px;
    font-size: var(--font-size-base);
  }
  .select2-container--default .select2-selection--single {
    padding: 11px 10px;
    font-size: var(--font-size-base);
  }
  .btn {
    padding: 18px 22px;
    font-size: var(--font-size-base);
  }
  .page {
    padding: var(--space-4) var(--space-3);
  }
  .site-header {
    padding: var(--space-5) var(--space-4);
  }
  .site-header__logo {
    max-width: 280px;
  }
}