:root {
  --gold: #f5c542;
  --deep: #0b1030;
  --blu: #6d7cff;
  --verde: #37e07a;
  --rosso: #ff5b6e;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font-family: "Trebuchet MS", Verdana, system-ui, sans-serif;
  color: #fff;
  background:
    radial-gradient(60% 55% at 50% 0%, rgba(90,120,255,.35), transparent 70%),
    radial-gradient(50% 60% at 15% 90%, rgba(120,60,220,.35), transparent 70%),
    radial-gradient(50% 60% at 85% 90%, rgba(20,140,200,.30), transparent 70%),
    linear-gradient(180deg, #070a22, #0b1030 45%, #05071a);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
}
button { font-family: inherit; }
.hidden { display: none !important; }

/* ---- barra comandi in alto ---- */
.barra {
  position: fixed; top: 0; left: 0; right: 0; z-index: 40;
  display: flex; justify-content: flex-end; gap: 10px; padding: 12px 16px;
}
.barra button {
  background: rgba(10,15,50,.7); color: #c7d0ff; border: 1px solid #3a49a8;
  border-radius: 10px; padding: 8px 14px; font-size: 15px; cursor: pointer;
}
.barra button:hover { color: #fff; border-color: var(--blu); }
.barra button[aria-pressed="true"] { color: var(--gold); border-color: var(--gold); }

/* ---- avvio ---- */
.avvio { max-width: 820px; margin: 0 auto; padding: 90px 24px 60px; text-align: center; }
.avvio h1 { font-size: clamp(30px, 5vw, 52px); margin: 0 0 6px; color: var(--gold); text-shadow: 0 0 30px rgba(245,197,66,.4); }
.avvio .sub { font-size: clamp(16px, 2.2vw, 22px); color: #c7d0ff; margin: 0 0 26px; }
.avvio .record { display: inline-block; background: rgba(10,15,50,.6); border: 1px solid #3a49a8; border-radius: 12px; padding: 12px 20px; margin-bottom: 30px; color: #c7d0ff; }
.avvio .record b { color: var(--gold); }
.avvio .inizia {
  display: block; margin: 0 auto; background: var(--gold); color: #111; border: 0;
  border-radius: 14px; padding: 18px 54px; font-size: 26px; font-weight: bold; cursor: pointer;
  box-shadow: 0 0 30px rgba(245,197,66,.5);
}
.avvio .inizia:hover { filter: brightness(1.08); }
.avvio .nota { margin-top: 26px; color: #8f9bd6; font-size: 14px; line-height: 1.5; }

/* ---- schermata di gioco ---- */
.lifelines { display: flex; gap: 18px; justify-content: center; padding: 60px 0 8px; }
.life {
  width: 68px; height: 68px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #3a4bb5, #131a4a);
  border: 2px solid var(--blu); display: grid; place-items: center; font-weight: bold; font-size: 12.5px;
  text-align: center; line-height: 1.05; cursor: pointer; box-shadow: 0 0 18px rgba(109,124,255,.4);
  color: #fff; padding: 4px;
}
.life:hover:not(.used) { filter: brightness(1.25); }
.life.used { opacity: .28; filter: grayscale(1); cursor: default; }
.life .kbd { display: block; font-size: 10px; color: #9fb0ff; margin-top: 2px; }

.stage { display: grid; grid-template-columns: 1fr 320px; gap: 26px; max-width: 1200px; margin: 0 auto; padding: 10px 26px 40px; }
.question {
  background: linear-gradient(180deg, #121a4e, #0a0f36); border: 2px solid var(--blu);
  border-radius: 14px; padding: 22px 26px; font-size: clamp(18px, 2.1vw, 28px);
  text-align: center; box-shadow: 0 0 30px rgba(80,110,255,.25);
}
.question .tag { display: block; font-size: 13px; color: #9fb0ff; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 8px; }
.answers { display: flex; flex-direction: column; gap: 14px; margin-top: 26px; }
.ans {
  position: relative; display: flex; align-items: center; gap: 16px; cursor: pointer; text-align: left;
  background: linear-gradient(180deg, #101740, #0a0f33); border: 2px solid #5566cc;
  padding: 16px 26px; color: #fff; font-size: clamp(16px, 1.7vw, 22px);
  clip-path: polygon(3.5% 0, 96.5% 0, 100% 50%, 96.5% 100%, 3.5% 100%, 0 50%);
  transition: filter .15s, opacity .15s;
}
.ans .letter { color: var(--gold); font-weight: bold; font-size: 1.25em; min-width: 1.4em; }
.ans:hover:not(.eliminated):not(.correct):not(.wrong) { filter: brightness(1.25); }
.ans.selezionata { border-color: var(--gold); box-shadow: 0 0 22px rgba(245,197,66,.5); }
.ans.eliminated { opacity: .18; filter: grayscale(1); cursor: default; }
.ans.correct { background: linear-gradient(180deg, #0f7a3a, #075c2b); border-color: var(--verde); box-shadow: 0 0 26px rgba(55,224,122,.55); }
.ans.wrong { background: linear-gradient(180deg, #8a1220, #5c0a15); border-color: var(--rosso); }
.ans .percento { margin-left: auto; color: var(--gold); font-weight: bold; font-variant-numeric: tabular-nums; }

.ladder { align-self: start; background: linear-gradient(180deg, #0d1440, #080c2b); border: 2px solid #3a49a8; border-radius: 14px; padding: 14px; }
.ladder h3 { margin: 2px 0 10px; text-align: center; color: #9fb0ff; font-size: 14px; letter-spacing: .1em; text-transform: uppercase; }
.row { display: flex; justify-content: space-between; padding: 4px 12px; border-radius: 8px; font-size: 15px; color: #c7d0ff; }
.row .lvl { color: #7d8bdd; }
.row.safe { color: var(--gold); font-weight: bold; }
.row.current { background: var(--gold); color: #111; font-weight: bold; }
.row.current .lvl { color: #4a3a00; }

.aiuto-casa { margin-top: 16px; background: #fff8e1; color: #5a4a00; border-radius: 12px; padding: 14px 18px; font-size: 16px; line-height: 1.5; }

.conferma-bar {
  margin-top: 20px; display: flex; gap: 16px; align-items: center; justify-content: center; flex-wrap: wrap;
  background: rgba(10,15,50,.7); border: 1px solid #3a49a8; border-radius: 12px; padding: 14px 20px;
  color: #c7d0ff; font-size: 17px;
}
.conferma-bar b { color: var(--gold); }
.conferma-bar button {
  background: var(--gold); border: 0; border-radius: 10px; padding: 12px 26px;
  font-size: 17px; font-weight: bold; cursor: pointer; color: #111;
}

/* ---- conferma / rivelazione / fine (overlay) ---- */
.overlay { position: fixed; inset: 0; background: rgba(4,6,20,.92); display: grid; place-items: center; z-index: 60; padding: 20px; }
.panel {
  background: linear-gradient(180deg, #121a4e, #0a0f36); border: 2px solid var(--gold);
  border-radius: 16px; padding: 30px 38px; max-width: 680px; text-align: center;
  box-shadow: 0 0 50px rgba(245,197,66,.3);
}
.panel h2 { margin: 0 0 6px; font-size: 32px; color: var(--gold); }
.panel .prize { font-size: 42px; font-weight: bold; margin: 8px 0 14px; }
.panel .why { color: #c7d0ff; font-size: 18px; line-height: 1.55; }
.panel .azioni { display: flex; gap: 12px; justify-content: center; margin-top: 22px; flex-wrap: wrap; }
.panel button { background: var(--gold); border: 0; border-radius: 10px; padding: 13px 28px; font-size: 18px; font-weight: bold; cursor: pointer; color: #111; }
.panel button.secondario { background: transparent; color: #c7d0ff; border: 1px solid #3a49a8; }
.panel.corretta { border-color: var(--verde); box-shadow: 0 0 50px rgba(55,224,122,.3); }
.panel.corretta h2 { color: var(--verde); }
.panel.errata { border-color: var(--rosso); box-shadow: 0 0 50px rgba(255,91,110,.3); }
.panel.errata h2 { color: var(--rosso); }

/* ---- crediti ---- */
.crediti { max-width: 720px; margin: 0 auto; padding: 30px 24px 60px; }
.crediti h2 { color: var(--gold); }
.crediti ul { list-style: none; padding: 0; }
.crediti li { border-bottom: 1px solid rgba(120,130,200,.25); padding: 12px 0; color: #c7d0ff; line-height: 1.5; }
.crediti li b { color: #fff; }
.crediti a { color: var(--gold); }
.crediti .nota { color: #8f9bd6; font-size: 14px; }
.crediti .azioni { margin-top: 24px; }
.crediti .azioni button { background: var(--gold); border: 0; border-radius: 10px; padding: 13px 28px; font-size: 18px; font-weight: bold; cursor: pointer; color: #111; }

/* ---- responsive ---- */
@media (max-width: 900px) {
  .stage { grid-template-columns: 1fr; }
  .ladder { order: -1; }
  .ladder .row { font-size: 13px; padding: 3px 10px; }
  .lifelines { padding-top: 56px; }
}
@media (max-width: 560px) {
  .life { width: 58px; height: 58px; font-size: 11px; }
  .barra { padding: 8px 10px; gap: 6px; }
  .barra button { padding: 7px 10px; font-size: 13px; }
}