/* Visualizzatore 3D del sarcofago romano - foglio di stile */
/* Layout: palcoscenico 3D a tutta pagina, intestazione in alto a sinistra, barra comandi in basso, scheda informazioni a destra */

:root {
  --nero: #000;
  --grafite: #222;
  --ardesia: #444;
  --bianco: #FFF;
  --carta: #f5f4f3;
  --pietra: #b5b4b3;
  --cenere: #6d6d6d;
  --accento: #ff3158;

  --pannello: rgba(34, 34, 34, .9);
  --filetto: #444;
  --font: 'IBM Plex Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  color-scheme: dark;
}

[hidden] { display: none !important; }
html, body { height: 100%; }
body { margin: 0; background: var(--nero); color: var(--carta); font-family: var(--font); font-size: 15px; overflow: hidden; }
button, select, input { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--accento); outline-offset: 2px; }

/* Palcoscenico */
#palco { position: fixed; inset: 0; background: radial-gradient(ellipse 70% 60% at 50% 42%, var(--grafite), var(--nero)); }
#palco canvas { display: block; width: 100%; height: 100%; touch-action: none; outline: none; }

/* Intestazione */
.intestazione { position: fixed; top: calc(env(safe-area-inset-top, 0px) + 18px); left: 20px; right: 20px; max-width: 560px; display: flex; flex-direction: column; gap: 4px; pointer-events: none; }
.occhiello { font-size: 12px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--accento); }
h1 { margin: 0; font-size: clamp(26px, 4.4vw, 40px); font-weight: 700; line-height: 1.05; letter-spacing: -.01em; color: var(--bianco); text-wrap: balance; }
.luogo { margin: 0; font-size: 15px; color: var(--pietra); }

/* Barra comandi */
.comandi { position: fixed; left: 12px; right: 12px; bottom: calc(env(safe-area-inset-bottom, 0px) + 12px); display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.gruppo { display: flex; align-items: center; gap: 8px; min-width: 0; padding: 6px 8px; background: var(--pannello); border: 1px solid var(--filetto); border-radius: 8px; }
.etichetta { padding-inline: 2px; font-size: 12px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--pietra); }

.seg { display: flex; overflow: hidden; border: 1px solid var(--filetto); border-radius: 6px; }
.seg button { min-height: 36px; padding: 7px 12px; background: transparent; border: 0; cursor: pointer; }
.seg button + button { border-left: 1px solid var(--filetto); }
.seg button[aria-pressed="true"] { background: var(--accento); color: var(--nero); font-weight: 600; }

.btn { display: inline-flex; align-items: center; gap: 6px; min-height: 36px; padding: 7px 12px; background: transparent; border: 1px solid var(--filetto); border-radius: 6px; cursor: pointer; }
.btn svg { flex: none; width: 16px; height: 16px; }
.btn:hover, .seg button:hover { border-color: var(--pietra); }
.btn[aria-pressed="true"] { background: var(--accento); border-color: var(--accento); color: var(--nero); font-weight: 600; }

input[type=range] { width: 110px; accent-color: var(--accento); }
.mostra-comandi { display: none; }

/* Scheda informazioni */
.scheda { position: fixed; top: calc(env(safe-area-inset-top, 0px) + 12px); right: 12px; bottom: calc(env(safe-area-inset-bottom, 0px) + 12px); z-index: 5; width: min(380px, calc(100% - 24px)); overflow: auto; display: flex; flex-direction: column; gap: 14px; padding: 20px 22px; background: var(--pannello); border: 1px solid var(--filetto); border-radius: 10px; }
.scheda h2 { margin: 0; font-size: 22px; font-weight: 700; color: var(--bianco); }
.scheda h3 { margin: 6px 0 0; font-size: 12px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--accento); }
.scheda p { margin: 0; line-height: 1.55; }
.scheda ul { margin: 0; padding-left: 18px; line-height: 1.6; }
.scheda kbd { padding: 0 5px; font-family: var(--font); font-weight: 600; border: 1px solid var(--ardesia); border-radius: 4px; }
.scheda .chiudi { align-self: flex-end; }
.nota { font-size: 13px; color: var(--pietra); }

/* Caricamento */
.caricamento { position: fixed; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; padding-inline: 24px; text-align: center; pointer-events: none; }
.barra { width: min(260px, 70vw); height: 3px; overflow: hidden; background: var(--ardesia); border-radius: 2px; }
.barra i { display: block; width: 0; height: 100%; background: var(--accento); transition: width .2s; }
.caricamento p { margin: 0; font-size: 13px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--pietra); }

/* Schermi stretti */
@media (max-width: 700px) {
  .mostra-comandi { display: inline-flex; position: fixed; right: 12px; bottom: calc(env(safe-area-inset-bottom, 0px) + 12px); z-index: 3; background: var(--pannello); }
  .comandi { bottom: calc(env(safe-area-inset-bottom, 0px) + 62px); flex-direction: column; align-items: stretch; }
  .comandi[data-aperto="false"] { display: none; }
  .gruppo { flex-wrap: wrap; }
  input[type=range] { flex: 1; width: auto; min-width: 90px; }
}

@media (prefers-reduced-motion: reduce) { .barra i { transition: none; } }