/* gestionale-product: pagina di registrazione. Stesso linguaggio scuro del
   sito ALVEN: grafite morbida, testo caldo, bordi sottili. */

:root {
  --su-bg: #1c1c1a;
  --su-surface: #242422;
  --su-border: #363632;
  --su-text: #ece7dd;
  --su-text-2: #bab4a8;
  --su-muted: #8d887e;
  --su-accent: #d8c7a3;
  --su-error: #d29a8e;
  --su-ok: #a3c293;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
.su-body {
  min-height: 100dvh; background: var(--su-bg); color: var(--su-text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-font-smoothing: antialiased;
}
.su {
  min-height: 100dvh; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 440px);
  gap: 56px; align-items: center; max-width: 1040px; margin: 0 auto; padding: 48px 24px;
}
.su-brand { margin: 0 0 32px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; font-size: 13px; color: var(--su-text-2); }
.su-title { margin: 0 0 14px; font-size: clamp(30px, 4vw, 44px); line-height: 1.1; font-weight: 600; letter-spacing: -.01em; }
.su-lead { margin: 0 0 6px; font-size: 18px; color: var(--su-text-2); }
.su-note { margin: 0; color: var(--su-muted); }
.su-card { background: var(--su-surface); border: 1px solid var(--su-border); border-radius: 12px; padding: 28px; }
.su-card__title { margin: 0 0 18px; font-size: 17px; font-weight: 600; }
.su-form { display: grid; gap: 14px; }
.su-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.su-field { display: grid; gap: 5px; }
.su-field label { font-size: 13px; color: var(--su-text-2); }
.su-field input {
  font: inherit; color: var(--su-text); background: var(--su-bg); border: 1px solid var(--su-border);
  border-radius: 8px; padding: 10px 12px; min-height: 42px; width: 100%;
}
.su-field input:focus { outline: 2px solid var(--su-accent); outline-offset: 1px; border-color: transparent; }
.su-field--error input { border-color: var(--su-error); }
.su-field__error { margin: 0; font-size: 13px; color: var(--su-error); }
.su-hint { margin: -6px 0 0; font-size: 13px; color: var(--su-muted); }
.su-button {
  font: inherit; font-weight: 600; margin-top: 6px; min-height: 44px; border-radius: 8px; cursor: pointer;
  background: var(--su-accent); color: #1c1c1a; border: 1px solid var(--su-accent);
}
.su-button:hover { filter: brightness(1.05); }
.su-button:focus-visible { outline: 2px solid var(--su-text); outline-offset: 2px; }
.su-alert { margin: 0 0 16px; padding: 10px 12px; border-radius: 8px; font-size: 14px; border: 1px solid; }
.su-alert--error { color: var(--su-error); border-color: #5f443e; background: #2b2220; }
.su-alert--ok { color: var(--su-ok); border-color: #485a41; background: #222a1f; }
.su-alert a, .su-alt a { color: var(--su-accent); }
.su-alt { margin: 18px 0 0; font-size: 14px; color: var(--su-muted); text-align: center; }

@media (max-width: 820px) {
  .su { grid-template-columns: 1fr; gap: 28px; padding: 32px 16px; align-items: start; }
  .su-brand { margin-bottom: 18px; }
}
@media (max-width: 420px) {
  .su-row { grid-template-columns: 1fr; }
  .su-card { padding: 20px 16px; }
}