/* AIHUBS Academy — per adattare i colori al sito modifica solo le variabili qui sotto */
:root {
  --bg: #0b0f17;
  --bg-2: #111827;
  --card: #151d2b;
  --line: #243044;
  --text: #e6ebf2;
  --muted: #94a0b4;
  --accent: #18c5a7;
  --accent-ink: #0b0f17;
  --warn: #f2b84b;
  --bad: #ef6f6c;
  --good: #3fd39b;
  --radius: 12px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 var(--font); }
a { color: var(--accent); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h2 { font-size: 1.35rem; margin-top: 1.6em; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
main.wrap { padding-top: 32px; padding-bottom: 64px; min-height: 70vh; }
.muted { color: var(--muted); }
.mono { font-family: var(--mono); font-size: .92em; }
.tiny { font-size: .82rem; color: var(--muted); margin: .8em 0 0; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .78rem; color: var(--accent); font-weight: 600; margin: 0 0 .6em; }
.lead { font-size: 1.1rem; color: #c9d2df; }
.note { font-size: .86rem; color: var(--muted); border-left: 2px solid var(--line); padding-left: 12px; }
.h-small { font-size: 1rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }

/* Topbar */
.topbar { border-bottom: 1px solid var(--line); background: rgba(11,15,23,.9); position: sticky; top: 0; z-index: 10; backdrop-filter: blur(6px); }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 62px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; letter-spacing: .04em; }
.brand-mark { background: var(--accent); color: var(--accent-ink); border-radius: 7px; padding: 3px 7px; font-size: .9rem; }
.brand-name em { font-style: normal; color: var(--accent); font-weight: 500; }
.topnav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: .95rem; }
.topnav a:hover { color: var(--text); }

/* Footer */
.footer { border-top: 1px solid var(--line); color: var(--muted); font-size: .85rem; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; padding: 22px 20px; }
.footer a { color: var(--muted); }

/* Card, bottoni, form */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.narrow { max-width: 420px; margin: 40px auto; }
.card > h1:first-child, .card > h2:first-child { margin-top: 0; }
.btn { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line); background: var(--bg-2); color: var(--text); padding: 11px 18px; border-radius: 8px; font: 600 .95rem var(--font); text-decoration: none; cursor: pointer; }
.btn:hover { border-color: var(--muted); }
.btn-primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn-primary:hover { filter: brightness(1.08); border-color: var(--accent); }
.btn[disabled] { opacity: .45; cursor: not-allowed; filter: none; }
.btn-block { width: 100%; justify-content: center; margin-top: 8px; }
.btn-sm { padding: 6px 11px; font-size: .82rem; }
.btn-ghost { background: transparent; }
label { display: block; font-size: .9rem; color: #c9d2df; margin-bottom: 14px; }
input, textarea, select { width: 100%; margin-top: 5px; background: var(--bg); color: var(--text); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; font: 1rem var(--font); }
input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: .86rem; color: var(--muted); }
.check input { width: 18px; height: 18px; margin-top: 2px; flex: none; accent-color: var(--accent); }
small.err { display: block; color: var(--bad); margin-top: 4px; }
small.hint { display: block; color: var(--muted); margin-top: 4px; }
small.hint.good { color: var(--good); }
small.hint.bad { color: var(--warn); }
.hp { position: absolute; left: -9999px; height: 0; overflow: hidden; }
.inline-form { display: flex; gap: 10px; flex-wrap: wrap; margin: 16px 0; }
.inline-form input { width: auto; flex: 1 1 200px; margin: 0; }

.flash { padding: 12px 16px; border-radius: 8px; margin: 0 0 18px; border: 1px solid; font-size: .95rem; }
.flash-ok { border-color: rgba(63,211,155,.4); background: rgba(63,211,155,.08); }
.flash-info { border-color: rgba(24,197,167,.4); background: rgba(24,197,167,.07); }
.flash-warn { border-color: rgba(242,184,75,.45); background: rgba(242,184,75,.08); }

/* Home */
.hero { display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: start; }
.facts { list-style: none; padding: 0; margin: 24px 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.facts li { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px; }
.facts strong { display: block; font-size: 1.2rem; color: var(--accent); }
.facts span { font-size: .78rem; color: var(--muted); }
.program { padding: 0; list-style: none; counter-reset: c; margin: 0 0 20px; }
.program li { counter-increment: c; display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--line); }
.program li span::before { content: counter(c, decimal-leading-zero) "  "; color: var(--accent); font-family: var(--mono); }
.program em { font-style: normal; color: var(--muted); font-size: .88rem; white-space: nowrap; }
.form-card { position: sticky; top: 86px; }
.company-badge { background: rgba(24,197,167,.08); border: 1px solid rgba(24,197,167,.35); padding: 8px 12px; border-radius: 8px; font-size: .92rem; }

/* Corso */
.course-head { margin-bottom: 26px; }
.progress { height: 8px; background: var(--bg-2); border-radius: 99px; overflow: hidden; border: 1px solid var(--line); margin: 14px 0 6px; max-width: 520px; }
.progress-bar { height: 100%; background: var(--accent); }
.chapter-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.chapter-list a { display: grid; grid-template-columns: 52px 1fr auto; gap: 14px; align-items: center; padding: 16px 18px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); color: var(--text); text-decoration: none; }
.chapter-list a:hover { border-color: var(--accent); }
.chapter-list .num { font-family: var(--mono); color: var(--accent); font-size: 1.1rem; text-align: center; }
.chapter-list .body small { display: block; color: var(--muted); font-size: .86rem; }
.chapter-list .dur { color: var(--muted); font-size: .85rem; }
.chapter-list li.done .num { color: var(--good); }
.chapter-list li.locked a { opacity: .55; }
.crumbs { font-size: .9rem; color: var(--muted); margin-bottom: 14px; }
.crumbs a { color: var(--muted); }
.video { position: relative; aspect-ratio: 16/9; background: #000; border-radius: var(--radius); overflow: hidden; margin: 18px 0; border: 1px solid var(--line); }
.video iframe, .video #player { position: absolute; inset: 0; width: 100%; height: 100%; }
.video-placeholder { position: absolute; inset: 0; display: grid; place-items: center; color: var(--muted); font-size: 1.1rem; background: repeating-linear-gradient(45deg, #0f1522, #0f1522 14px, #121a29 14px, #121a29 28px); }
.chapter-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

/* Quiz */
.quiz fieldset { margin: 0 0 14px; }
.quiz legend { float: left; width: 100%; font-weight: 600; padding: 0; margin-bottom: 12px; display: flex; gap: 10px; }
.quiz legend + * { clear: both; }
.qnum { font-family: var(--mono); color: var(--accent); }
.opt { display: flex; gap: 10px; align-items: flex-start; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; margin: 0 0 8px; cursor: pointer; color: var(--text); }
.opt:hover { border-color: var(--muted); }
.opt input { width: 18px; height: 18px; margin: 3px 0 0; flex: none; accent-color: var(--accent); }
.opt:has(input:checked) { border-color: var(--accent); background: rgba(24,197,167,.06); }

.done-box { margin-bottom: 20px; }
.cta-box h2 { margin-top: 0; }
.verify.ok { border-color: rgba(63,211,155,.5); margin-top: 16px; }
.prose { max-width: 760px; }
.prose li { margin-bottom: .5em; }

/* Admin */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 10px 0 20px; }
.stat { padding: 16px; }
.stat strong { display: block; font-size: 1.8rem; color: var(--accent); }
.stat span { color: var(--muted); font-size: .85rem; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
.table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.table th { text-align: left; font-weight: 600; color: var(--muted); background: var(--bg-2); padding: 10px 12px; white-space: nowrap; }
.table td { padding: 10px 12px; border-top: 1px solid var(--line); vertical-align: top; }
.table .actions { display: flex; gap: 6px; }
.table form { margin: 0; }
input.copy { font-family: var(--mono); font-size: .78rem; min-width: 260px; margin: 0; padding: 6px 8px; cursor: copy; }
.export-bar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.admin-form { max-width: 760px; }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; }
  .form-card { position: static; }
  .facts, .stats { grid-template-columns: repeat(2, 1fr); }
  .row2 { grid-template-columns: 1fr; }
  .chapter-list a { grid-template-columns: 38px 1fr; }
  .chapter-list .dur { display: none; }
}