/* MathGuru — screens.css */
/* Splash, schermata regole, fine partita e annunci */

/* ---------- schermate ---------- */
/* ---------- splash: il guru in levitazione ---------- */
.screen.splash{background:radial-gradient(62% 52% at 50% 42%, rgba(46,14,102,.62), rgba(3,1,10,.93))}
.splash-in{width:min(520px,100%);text-align:center;display:flex;flex-direction:column;align-items:center}
.levitate{position:relative;animation:hover calc(4.6s / var(--sp)) ease-in-out infinite alternate}
.sway{animation:sway calc(6.7s / var(--sp)) ease-in-out infinite alternate;transform-origin:50% 88%}
.breathe{animation:breathe calc(8.3s / var(--sp)) ease-in-out infinite alternate;transform-origin:50% 80%}
#guru{width:clamp(215px,60vw,370px);height:auto;aspect-ratio:800/657;display:block;
  filter:drop-shadow(0 0 26px rgba(255,210,63,.45)) drop-shadow(0 0 60px rgba(255,47,185,.28))}
.beam{position:absolute;left:50%;bottom:-6%;width:62%;height:12%;transform:translateX(-50%);
  background:radial-gradient(50% 50% at 50% 50%, rgba(34,230,255,.42), transparent 70%);
  filter:blur(7px);animation:beam calc(4.6s / var(--sp)) ease-in-out infinite alternate}
@keyframes hover{from{transform:translateY(-14px)}to{transform:translateY(16px)}}
@keyframes sway{0%{transform:rotate(-4.2deg)}100%{transform:rotate(4.2deg)}}
@keyframes breathe{0%{transform:scale(.985) skewX(-1.4deg)}100%{transform:scale(1.02) skewX(1.4deg)}}
@keyframes beam{from{opacity:.35;transform:translateX(-50%) scale(.82)}
  to{opacity:.75;transform:translateX(-50%) scale(1.12)}}
.sign{color:var(--dim);letter-spacing:.2em;font-size:clamp(11px,3vw,13px);margin:6px 0 20px;
  text-transform:uppercase}
.sign b{color:var(--ink);font-weight:700}
.loadbar{width:min(280px,72%);height:3px;border-radius:99px;background:rgba(255,255,255,.12);
  overflow:hidden;margin-bottom:18px}
.loadbar i{display:block;height:100%;width:0;border-radius:99px;
  background:linear-gradient(90deg,var(--ion),var(--plasma),var(--gold))}
.loadbar.run i{animation:fill linear forwards}
@keyframes fill{to{width:100%}}
.big.gate{width:min(300px,80%)}
.big.gate[disabled]{background:rgba(255,255,255,.06);color:var(--dim);box-shadow:none;
  border:1px solid var(--line);cursor:default;transform:none}
.big.gate.on{animation:gateOn .5s cubic-bezier(.2,1.6,.4,1), ready 1.6s ease-in-out .5s infinite}
@keyframes gateOn{from{transform:scale(.86);filter:brightness(2.4)}to{transform:none}}

.screen{position:fixed;inset:0;z-index:60;display:grid;place-items:center;padding:18px;
  background:radial-gradient(70% 60% at 50% 40%, rgba(30,10,70,.86), rgba(3,1,10,.96));
  backdrop-filter:blur(7px);overflow-y:auto}
.screen[hidden]{display:none}
.card{width:min(560px,100%);background:linear-gradient(170deg,rgba(40,20,90,.72),rgba(10,5,28,.9));
  border:1px solid rgba(160,140,255,.4);border-radius:22px;padding:clamp(18px,4.6vw,30px);
  box-shadow:0 30px 90px rgba(0,0,0,.7), inset 0 1px 0 rgba(255,255,255,.16)}
.title{font-family:var(--fd);font-weight:900;font-size:clamp(32px,10vw,60px);letter-spacing:.06em;line-height:.95;
  background:linear-gradient(96deg,var(--ion),#fff 30%,var(--plasma) 58%,var(--gold));
  -webkit-background-clip:text;background-clip:text;color:transparent;background-size:220% 100%;
  animation:shine 6s linear infinite}
.tag{color:var(--dim);letter-spacing:.28em;font-size:10px;text-transform:uppercase;margin:8px 0 16px}
.rules{display:flex;flex-direction:column;gap:9px;margin-bottom:16px}
.rule{display:grid;grid-template-columns:26px 1fr;gap:10px;align-items:start;font-size:clamp(12.5px,3.3vw,14.5px);
  color:#c9d2f5;line-height:1.45}
.rule b{color:var(--ink)}
.glyph{width:26px;height:26px;border-radius:8px;display:grid;place-items:center;font-family:var(--fd);
  font-weight:900;font-size:13px;background:rgba(255,255,255,.07);border:1px solid var(--line);color:var(--ion)}
.demo{display:flex;gap:5px;flex-wrap:wrap;margin:2px 0 4px}
.chip{font-family:var(--fd);font-weight:900;font-size:13px;padding:5px 8px;border-radius:8px;
  background:linear-gradient(180deg,#1a1140,#0b0620);border:1.5px solid var(--c);color:var(--c);
  box-shadow:0 0 12px color-mix(in srgb,var(--c) 30%, transparent)}
.arrow{align-self:center;color:var(--dim);font-size:12px}
.lv-pick{margin-bottom:16px}
.lv-row{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;margin-top:8px}
.lv{padding:9px 4px;border-radius:11px;border:1px solid var(--line);background:rgba(255,255,255,.04);
  text-align:center;transition:.18s}
.lv b{display:block;font-family:var(--fd);font-weight:900;font-size:17px}
.lv span{display:block;font-size:9.5px;color:var(--dim);letter-spacing:.08em;margin-top:2px}
.lv[aria-pressed="true"]{background:linear-gradient(180deg,var(--violet),var(--plasma));border-color:transparent;
  box-shadow:0 6px 22px rgba(255,47,185,.34)}
.lv[aria-pressed="true"] span{color:rgba(255,255,255,.85)}
.big{width:100%;padding:16px;border-radius:14px;font-family:var(--fd);font-weight:900;font-size:16px;
  letter-spacing:.18em;background:linear-gradient(96deg,var(--ion),var(--violet) 55%,var(--plasma));
  color:#fff;box-shadow:0 12px 36px rgba(124,60,255,.42);transition:.18s}
.big:hover{transform:translateY(-2px);box-shadow:0 18px 46px rgba(255,47,185,.5)}
.final{font-family:var(--fd);font-weight:900;font-size:clamp(46px,15vw,84px);color:var(--gold);
  text-shadow:0 0 40px rgba(255,210,63,.6);line-height:1;font-variant-numeric:tabular-nums}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:16px 0}
.stat{background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:12px;padding:9px}
.stat b{display:block;font-family:var(--fd);font-weight:900;font-size:18px;color:var(--ion)}

/* ---------- annuncio livello ---------- */
#announce{position:fixed;inset:0;z-index:55;display:grid;place-items:center;pointer-events:none}
#announce[hidden]{display:none}
#announce div{font-family:var(--fd);font-weight:900;font-size:clamp(34px,12vw,90px);letter-spacing:.08em;
  color:#fff;text-shadow:0 0 40px var(--plasma), 0 0 90px var(--violet);animation:slam .95s ease forwards;
  text-align:center;padding:0 12px}
#announce div.sm{font-size:clamp(22px,6.6vw,52px);text-shadow:0 0 40px var(--gold), 0 0 90px var(--plasma)}
@keyframes slam{0%{transform:scale(2.6);opacity:0;filter:blur(14px)}
  22%{transform:scale(1);opacity:1;filter:blur(0)}
  74%{transform:scale(1);opacity:1}
  100%{transform:scale(.92);opacity:0}}

/* esito vittorioso: la targhetta si accende invece di restare grigia */
.tag.win{
  background:linear-gradient(92deg,var(--lime),#fff 40%,var(--gold));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  font-weight:700;letter-spacing:.18em;
}

/* comandi musicali dello splash: frecce ai lati dell'altoparlante */
.spk-row{display:flex;align-items:center;justify-content:center;gap:12px;margin-bottom:6px}
.splash-spk{margin:0}
.icb.nav{
  width:38px;height:38px;border-radius:50%;
  border-color:rgba(34,230,255,.45);color:var(--ion);
  box-shadow:0 0 14px rgba(34,230,255,.22);
}
.icb.nav svg{width:19px;height:19px}
.icb.nav:hover{border-color:var(--ion);background:rgba(34,230,255,.14);transform:translateY(-1px)}
.icb.nav:active{transform:scale(.9)}
/* a musica spenta le frecce restano usabili ma si fanno da parte */
.icb.nav.idle{opacity:.42;color:var(--dim);border-color:var(--line);box-shadow:none}

.track-info{
  min-height:16px;margin:0 0 12px;
  font-family:var(--fd);font-weight:700;font-size:10.5px;letter-spacing:.16em;
  color:var(--ion);text-transform:uppercase;
  opacity:0;transform:translateY(-3px);
  transition:opacity .25s, transform .25s;
}
.track-info.on{opacity:.95;transform:none}