/* Modulo di iscrizione pubblico Star Tidal */
:root {
  --isc-ink: #16241f;
  --isc-muted: #5b6b65;
  --isc-line: #d9e2de;
  --isc-bg: #f4f6f3;
  --isc-card: #ffffff;
  --isc-green: #0f6b4f;
  --isc-green-dark: #0a4c38;
  --isc-gold: #c9a227;
  --isc-error: #b3261e;
  --isc-error-bg: #fdecea;
  --isc-ok-bg: #e6f4ee;
  --isc-radius: 10px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--isc-ink);
  background: var(--isc-bg);
}
a { color: var(--isc-green); }
a:hover { color: var(--isc-green-dark); }
.isc-wrap { max-width: 860px; margin: 0 auto; padding: 0 16px; }

.isc-header { background: var(--isc-green-dark); border-bottom: 4px solid var(--isc-gold); }
.isc-header__inner { padding-top: 12px; padding-bottom: 12px; }
.isc-brand { display: inline-flex; align-items: center; gap: 12px; color: #fff; text-decoration: none; }
.isc-brand:hover { color: #fff; }
.isc-brand__logo { height: 48px; width: auto; background: #fff; border-radius: 50%; padding: 3px; }
.isc-brand strong { display: block; font-size: 1.15rem; letter-spacing: .02em; }
.isc-brand small { display: block; opacity: .85; font-size: .8rem; }

.isc-intro { padding: 28px 0 8px; }
.isc-intro h1 { font-size: clamp(1.5rem, 4vw, 2rem); line-height: 1.2; margin: 4px 0 10px; }
.isc-kicker { margin: 0; color: var(--isc-green); font-weight: 600; text-transform: uppercase; font-size: .8rem; letter-spacing: .08em; }
.isc-paper { background: #fff8e1; border-left: 4px solid var(--isc-gold); padding: 10px 14px; border-radius: 6px; }

.isc-card {
  background: var(--isc-card);
  border: 1px solid var(--isc-line);
  border-radius: var(--isc-radius);
  padding: 20px;
  margin: 16px 0;
}
.isc-card h2 { font-size: 1.15rem; margin: 0 0 14px; display: flex; align-items: center; gap: 10px; }
.isc-card h3 { font-size: 1rem; margin: 18px 0 8px; color: var(--isc-muted); }
.isc-form { counter-reset: isc-step; }
.isc-form .isc-card { counter-increment: isc-step; }
.isc-num::before { content: counter(isc-step); }
.isc-num {
  display: inline-grid; place-items: center;
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--isc-green); color: #fff; font-size: .9rem; flex: none;
}
.isc-hint { color: var(--isc-muted); font-size: .92rem; margin: 0 0 12px; }

.isc-grid { display: grid; grid-template-columns: 1fr; gap: 12px 16px; }
@media (min-width: 640px) {
  .isc-grid { grid-template-columns: 1fr 1fr; }
  .isc-grid .isc-wide, .isc-field.isc-wide { grid-column: 1 / -1; }
}
.isc-field { margin: 0; border: 0; padding: 0; min-width: 0; }
.isc-field label, .isc-field legend { display: block; font-weight: 600; font-size: .92rem; margin-bottom: 4px; padding: 0; }
.isc-field input[type=text], .isc-field input[type=email], .isc-field input[type=tel],
.isc-field input[type=date], .isc-field select, .isc-field textarea {
  width: 100%;
  font: inherit;
  padding: 10px 12px;
  border: 1px solid #b9c6c0;
  border-radius: 8px;
  background: #fff;
  color: inherit;
  min-height: 44px;
}
.isc-field textarea { resize: vertical; }
.isc-field input:focus, .isc-field select:focus, .isc-field textarea:focus {
  outline: 3px solid rgba(15, 107, 79, .25); border-color: var(--isc-green);
}
.isc-upper { text-transform: uppercase; }
.isc-inline .isc-choice { margin-right: 18px; }
.isc-choice { display: inline-flex; align-items: center; gap: 6px; font-weight: 400; min-height: 44px; cursor: pointer; }
.isc-choice--block { display: flex; align-items: flex-start; gap: 10px; padding: 10px 12px; border: 1px solid var(--isc-line); border-radius: 8px; margin-bottom: 8px; }
.isc-choice--block input { margin-top: 4px; }
.isc-field .isc-choice { display: inline-flex; font-weight: 400; margin-bottom: 0; }
.isc-field .isc-choice--block { display: flex; margin-bottom: 8px; }
.isc-inline .isc-choice { min-height: 40px; }

.isc-who { display: grid; grid-template-columns: 1fr; gap: 10px; }
@media (min-width: 520px) { .isc-who { grid-template-columns: 1fr 1fr; } }
.isc-tile { display: flex; gap: 10px; align-items: flex-start; padding: 14px; border: 2px solid var(--isc-line); border-radius: var(--isc-radius); cursor: pointer; }
.isc-tile input { margin-top: 4px; accent-color: var(--isc-green); }
.isc-tile small { display: block; color: var(--isc-muted); }
.isc-tile:has(input:checked) { border-color: var(--isc-green); background: var(--isc-ok-bg); }

.isc-check { margin: 0 0 10px; }
.isc-check label { display: flex; gap: 10px; align-items: flex-start; cursor: pointer; padding: 10px 12px; border: 1px solid var(--isc-line); border-radius: 8px; }
.isc-check input[type=checkbox] { width: 20px; height: 20px; margin-top: 2px; flex: none; accent-color: var(--isc-green); }
input[type=radio] { accent-color: var(--isc-green); width: 18px; height: 18px; }

.is-invalid input, .is-invalid select, .is-invalid textarea, .isc-check.is-invalid label, .is-invalid .isc-choice--block { border-color: var(--isc-error); }
.isc-error { color: var(--isc-error); font-size: .88rem; margin: 4px 0 0; }

/* sezione genitore: visibile solo per i minori (dove il browser supporta :has, altrimenti sempre visibile) */
@supports selector(:has(*)) {
  .isc-form:not(:has(#chi-minore:checked)) .isc-tutor,
  .isc-form:not(:has(#chi-minore:checked)) .isc-tutor-hint { display: none; }
}

.isc-submit { margin: 24px 0 40px; text-align: center; }
.isc-btn {
  font: inherit; font-weight: 700; font-size: 1.05rem;
  background: var(--isc-green); color: #fff; border: 0; border-radius: 999px;
  padding: 14px 28px; min-height: 48px; cursor: pointer; width: 100%; max-width: 420px;
  box-shadow: 0 2px 0 var(--isc-gold);
}
.isc-btn:hover { background: var(--isc-green-dark); }
.isc-btn--ghost { background: transparent; color: var(--isc-green); border: 2px solid var(--isc-green); box-shadow: none; }
.isc-btn--ghost:hover { background: var(--isc-ok-bg); }
a.isc-btn { display: inline-block; text-decoration: none; text-align: center; }

.isc-hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.isc-sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

.message { margin: 16px 0 0; padding: 12px 16px; border-radius: 8px; cursor: pointer; }
.message.error { background: var(--isc-error-bg); color: var(--isc-error); border: 1px solid #f3c1bd; }
.message.success { background: var(--isc-ok-bg); color: var(--isc-green-dark); border: 1px solid #bfe0d1; }
.message.hidden { display: none; }

.isc-done { text-align: center; padding: 32px 0; }
.isc-done ol { text-align: left; display: inline-block; margin: 0 auto 20px; }
.isc-actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.isc-actions .isc-btn { width: auto; }

.isc-footer { color: var(--isc-muted); font-size: .82rem; padding: 24px 0 32px; border-top: 1px solid var(--isc-line); margin-top: 24px; }