/* ═══════════════════════════════════════════════════════════
   STUDIO — The Instrument Room (room.css)
   Esperienza interattiva: strumento generativo + 3D reattivo.
   Stack: Tone.js + Three.js + GSAP + Lenis.
   ═══════════════════════════════════════════════════════════ */

@font-face { font-family:'GT-Sectra-Fine'; src:url('fonts/GT-Sectra-Fine-Book.woff2') format('woff2'); font-weight:400; font-style:normal; font-display:swap; }
@font-face { font-family:'GT-Sectra-Fine'; src:url('fonts/GT-Sectra-Fine-Medium.woff2') format('woff2'); font-weight:500 700; font-style:normal; font-display:swap; }
@font-face { font-family:'nb_akademie'; src:url('fonts/nb_akademie_light-webfont.woff2') format('woff2'); font-weight:300 400; font-style:normal; font-display:swap; }
@font-face { font-family:'nb_akademie'; src:url('fonts/nb_akademie_medium-webfont.woff2') format('woff2'); font-weight:500 600; font-style:normal; font-display:swap; }

*,*::before,*::after { box-sizing:border-box; margin:0; padding:0; }

:root {
  --void:#06060f; --navy:#0a0a1a; --violet:#14081f;
  --cyan:#00d4ff; --cyan-soft:#6ce4ff;
  --purple:#7b2fff; --purple-soft:#b07bff;
  --text:#f4f6ff; --t2:#aab2c8; --t3:rgba(244,246,255,.56);
  --line:rgba(255,255,255,.08); --line-hi:rgba(255,255,255,.18);
  --glass:rgba(255,255,255,.04); --glass-hi:rgba(255,255,255,.07);
  --fd:'GT-Sectra-Fine',Georgia,serif;
  --fb:'nb_akademie','Inter',system-ui,sans-serif;
  --nav-h:78px; --ease:cubic-bezier(.16,1,.3,1);
}

html { background:var(--void); color:var(--text); font-family:var(--fb); font-size:16px;
  -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility; overflow-x:hidden; cursor:none; }
body { background:transparent; overflow-x:hidden; min-height:100vh; line-height:1.6; }
::selection { background:rgba(123,47,255,.34); color:#fff; }
a { color:inherit; text-decoration:none; }
img { max-width:100%; display:block; }

/* ── CANVAS / ATMOSPHERE ── */
/* Poster = foto studio (riferimento Blender). Visibile durante il caricamento del 3D
   e come fallback se WebGL non e' disponibile. Si dissolve a scena pronta. */
.room-poster { position:fixed; inset:0; z-index:0; pointer-events:none;
  background:#06060f center/cover no-repeat url("img/studio-poster.jpg");
  background-image:image-set(url("img/studio-poster.webp") type("image/webp"), url("img/studio-poster.jpg") type("image/jpeg"));
  filter:brightness(1) saturate(1.08) contrast(1.05);
  opacity:1; transition:opacity 1.4s var(--ease); }
.room-poster::after { content:''; position:absolute; inset:0;
  background:radial-gradient(120% 100% at 50% 38%, transparent 30%, rgba(4,4,12,.6) 82%, rgba(4,4,12,.95) 100%); }
body.scene-ready .room-poster { opacity:0; }
#room-canvas { position:fixed; inset:0; z-index:0; width:100%; height:100%; pointer-events:none; opacity:0; transition:opacity 1.4s var(--ease); }
body.scene-ready #room-canvas { opacity:1; }
.vignette { position:fixed; inset:0; z-index:1; pointer-events:none;
  background:radial-gradient(120% 90% at 50% 44%, transparent 36%, rgba(3,3,10,.55) 86%, rgba(3,3,10,.92) 100%); }
.grain { position:fixed; inset:-50%; z-index:2; pointer-events:none; opacity:.05; mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grain 6s steps(6) infinite; }
@keyframes grain { 0%{transform:translate(0,0)} 50%{transform:translate(-4%,3%)} 100%{transform:translate(3%,-2%)} }

/* ── CURSOR ── */
.cursor,.cursor-ring { position:fixed; top:0; left:0; z-index:9999; pointer-events:none; border-radius:50%; transform:translate(-50%,-50%); will-change:transform; }
.cursor { width:6px; height:6px; background:var(--cyan); margin:-3px 0 0 -3px; box-shadow:0 0 10px var(--cyan); transition:background .3s,width .25s,height .25s; }
.cursor-ring { width:36px; height:36px; margin:-18px 0 0 -18px; border:1px solid rgba(255,255,255,.32); transition:width .35s var(--ease),height .35s var(--ease),border-color .35s,background .35s; }
.cursor.on-link { width:9px; height:9px; background:var(--purple-soft); box-shadow:0 0 12px var(--purple-soft); }
.cursor-ring.on-link { width:54px; height:54px; border-color:rgba(123,47,255,.55); background:rgba(123,47,255,.05); }
@media (max-width:900px),(pointer:coarse){ .cursor,.cursor-ring{display:none;} html{cursor:auto;} }

/* ── ENTER GATE ── */
.gate { position:fixed; inset:0; z-index:9000; background:radial-gradient(120% 100% at 50% 30%, #14081f, #06060f 70%);
  display:flex; align-items:center; justify-content:center; text-align:center;
  transition:opacity .9s var(--ease), visibility .9s; }
.gate.hidden { opacity:0; visibility:hidden; }
.gate-inner { width:min(88vw,640px); padding:2rem; }
.gate-over { font-size:.72rem; font-weight:600; letter-spacing:.26em; text-transform:uppercase; color:var(--cyan); margin-bottom:1.6rem; }
.gate-title { font-family:var(--fd); font-weight:500; font-size:clamp(2.2rem,6.5vw,4.6rem); line-height:1.04; letter-spacing:-.02em; margin-bottom:1.4rem; }
.gate-title em { font-style:italic; background:linear-gradient(90deg,var(--cyan),var(--purple-soft)); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; }
.gate-sub { font-size:clamp(.95rem,1.6vw,1.1rem); color:var(--t2); margin-bottom:2.6rem; }
.gate-btn { position:relative; display:inline-flex; align-items:center; justify-content:center;
  width:170px; height:170px; border-radius:50%; background:transparent; border:none; cursor:none; color:var(--text); }
.gate-btn-ring { position:absolute; inset:0; border-radius:50%; border:1px solid rgba(0,212,255,.4);
  box-shadow:0 0 40px rgba(0,212,255,.15), inset 0 0 30px rgba(123,47,255,.1); animation:pulse-ring 2.4s var(--ease) infinite; }
@keyframes pulse-ring { 0%,100%{ transform:scale(1); opacity:1; } 50%{ transform:scale(1.08); opacity:.7; } }
.gate-btn-label { position:relative; z-index:2; font-size:.84rem; letter-spacing:.16em; text-transform:uppercase; font-weight:500; }
.gate-btn:hover .gate-btn-ring { border-color:var(--cyan); box-shadow:0 0 60px rgba(0,212,255,.3), inset 0 0 40px rgba(123,47,255,.2); }
.gate-hint { margin-top:2.4rem; font-size:.66rem; letter-spacing:.2em; text-transform:uppercase; color:var(--t3); }

/* ── NAV ── */
.nav { position:fixed; top:0; left:0; right:0; z-index:100; height:var(--nav-h);
  display:flex; align-items:center; justify-content:space-between; padding:0 clamp(1.25rem,4vw,3rem); }
.nav-logo { display:flex; align-items:center; gap:.6rem; }
.nav-logo img { height:30px; width:auto; border-radius:6px; }
.nav-logo-txt { font-size:.74rem; letter-spacing:.14em; text-transform:uppercase; color:var(--t3); }
.nav-right { display:flex; align-items:center; gap:clamp(1rem,2.5vw,1.8rem); }
.audio-toggle { display:inline-flex; align-items:center; gap:.6rem; background:var(--glass); border:1px solid var(--line-hi);
  backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px); border-radius:100px; padding:.5rem .95rem;
  color:var(--t2); font-family:var(--fb); font-size:.66rem; letter-spacing:.14em; text-transform:uppercase; cursor:none;
  transition:color .3s,border-color .3s; }
.audio-toggle:hover { color:var(--text); border-color:rgba(0,212,255,.4); }
.audio-bars { display:inline-flex; align-items:flex-end; gap:2px; height:12px; }
.audio-bars i { width:2px; height:4px; background:var(--cyan); border-radius:1px; opacity:.5; }
.audio-toggle.playing .audio-bars i { opacity:1; animation:eq .9s ease-in-out infinite; }
.audio-bars i:nth-child(2){animation-delay:.15s} .audio-bars i:nth-child(3){animation-delay:.3s} .audio-bars i:nth-child(4){animation-delay:.45s}
@keyframes eq { 0%,100%{height:4px} 50%{height:12px} }
.nav-exit { font-size:.72rem; letter-spacing:.12em; text-transform:uppercase; color:var(--t3); transition:color .3s,letter-spacing .3s; }
.nav-exit:hover { color:var(--text); letter-spacing:.18em; }
@media (max-width:600px){ .nav-exit{display:none;} }

/* ── SCROLL RAIL ── */
.scroll-rail { position:fixed; right:clamp(1rem,2.5vw,2.2rem); top:50%; transform:translateY(-50%); z-index:90; width:1px; height:160px; background:rgba(255,255,255,.1); }
.scroll-rail-fill { position:absolute; top:0; left:0; width:100%; height:0%; background:linear-gradient(180deg,var(--cyan),var(--purple)); box-shadow:0 0 8px var(--cyan); }
@media (max-width:900px){ .scroll-rail{display:none;} }

/* ── ZONES ── */
#scene { position:relative; z-index:10; }
.zone { position:relative; min-height:100vh; display:flex; align-items:center; padding:var(--nav-h) clamp(1.5rem,7vw,8rem) 5rem; }
.zone-content { width:100%; max-width:720px; position:relative; }
.zone-content::before { content:''; position:absolute; inset:-14% -12%;
  background:radial-gradient(58% 64% at 50% 50%, rgba(6,6,15,.74) 0%, rgba(6,6,15,.46) 46%, rgba(6,6,15,.16) 70%, transparent 84%);
  z-index:-1; pointer-events:none; filter:blur(10px); }
.zone.right { justify-content:flex-end; }
.zone.right .zone-content { text-align:right; }

.overline { font-size:.72rem; font-weight:600; letter-spacing:.26em; text-transform:uppercase; color:var(--cyan);
  margin-bottom:1.4rem; display:flex; align-items:center; gap:.8rem; }
.zone.right .overline { justify-content:flex-end; }
.overline::before { content:''; width:32px; height:1px; background:linear-gradient(90deg,currentColor,transparent); }
.zone.right .overline::before { display:none; }
.zone.right .overline::after { content:''; width:32px; height:1px; background:linear-gradient(90deg,transparent,currentColor); }
.accent-cyan { color:var(--cyan); } .accent-purple { color:var(--purple-soft); }

.zone-title { font-family:var(--fd); font-weight:500; font-size:clamp(2.2rem,6vw,4.4rem); line-height:1.05; letter-spacing:-.02em; margin-bottom:1.8rem; text-shadow:0 2px 22px rgba(6,6,15,.7); }
.zone-body { font-size:clamp(1rem,1.5vw,1.18rem); color:var(--text); line-height:1.75; max-width:56ch; margin-bottom:2rem; text-shadow:0 1px 14px rgba(6,6,15,.8); }
.zone.right .zone-body { margin-left:auto; }

.chips { display:flex; flex-wrap:wrap; gap:.6rem; }
.zone.right .chips { justify-content:flex-end; }
.chips span { font-size:.66rem; font-weight:500; letter-spacing:.12em; text-transform:uppercase; color:var(--t2);
  border:1px solid var(--line-hi); border-radius:100px; padding:.4rem .9rem; background:var(--glass);
  backdrop-filter:blur(8px); -webkit-backdrop-filter:blur(8px); }

/* ── HERO + INSTRUMENT ── */
.zone-hero { justify-content:center; text-align:center; }
.hero-content { max-width:900px; }
.hero-content .overline { justify-content:center; }
.hero-content .overline::before { background:linear-gradient(90deg,transparent,var(--cyan)); }
.hero-content .overline::after { content:''; width:32px; height:1px; background:linear-gradient(90deg,var(--cyan),transparent); }
.hero-title { font-family:var(--fd); font-weight:500; font-size:clamp(2.6rem,8vw,5.6rem); line-height:1; letter-spacing:-.03em; margin-bottom:1.4rem;
  background:linear-gradient(180deg,#fff 30%,rgba(176,123,255,.9)); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent;
  filter:drop-shadow(0 2px 24px rgba(6,6,15,.7)); }
.hero-sub { font-size:clamp(1rem,1.8vw,1.25rem); color:var(--text); line-height:1.6; font-weight:300; max-width:560px; margin:0 auto 2.8rem; text-shadow:0 1px 16px rgba(6,6,15,.85); }

/* INSTRUMENT PADS */
.instrument { display:grid; grid-template-columns:repeat(8,1fr); gap:.7rem; max-width:620px; margin:0 auto 1.4rem; }
@media (max-width:560px){ .instrument{ grid-template-columns:repeat(4,1fr); max-width:320px; } }
.pad { position:relative; aspect-ratio:1; border-radius:14px; cursor:none;
  background:linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  border:1px solid var(--line-hi); overflow:hidden;
  transition:transform .12s var(--ease), border-color .3s, box-shadow .3s;
  display:flex; align-items:flex-end; justify-content:flex-start; }
.pad span { position:relative; z-index:2; font-size:.6rem; letter-spacing:.1em; color:var(--t3); padding:.5rem; text-transform:uppercase; }
.pad::before { content:''; position:absolute; inset:0; opacity:0;
  background:radial-gradient(120% 120% at 50% 100%,
    hsl(calc(190 + var(--i) * 22) 100% 60% / .9), transparent 70%);
  transition:opacity .4s var(--ease); }
.pad:hover { border-color:rgba(255,255,255,.35); transform:translateY(-2px); }
.pad.active { transform:translateY(2px) scale(.97); border-color:#fff; box-shadow:0 0 30px hsl(calc(190 + var(--i) * 22) 100% 60% / .5); }
.pad.active::before { opacity:1; }
.instrument-hint { font-size:.66rem; letter-spacing:.18em; text-transform:uppercase; color:var(--t3); }

/* ── FINAL ── */
.zone-final { justify-content:center; text-align:center; }
.final-content { max-width:760px; }
.final-content .overline { justify-content:center; }
.final-content .overline::before { background:linear-gradient(90deg,transparent,var(--cyan)); }
.final-content .overline::after { content:''; width:32px; height:1px; background:linear-gradient(90deg,var(--cyan),transparent); }
.final-content .zone-body { margin:0 auto 0; }
.final-title { font-family:var(--fd); font-weight:500; font-size:clamp(2.4rem,7vw,5rem); line-height:1.04; letter-spacing:-.02em; margin-bottom:1.6rem; text-shadow:0 2px 22px rgba(6,6,15,.7); }
.final-title em { font-style:italic; color:var(--purple-soft); }
.final-email { display:inline-block; font-family:var(--fd); font-size:clamp(1.2rem,3vw,1.9rem); color:var(--text); margin:1.6rem 0 2.4rem; position:relative; padding-bottom:.3rem; }
.final-email::after { content:''; position:absolute; left:0; bottom:0; width:0; height:1px; background:linear-gradient(90deg,var(--cyan),var(--purple)); transition:width .5s var(--ease); }
.final-email:hover::after { width:100%; }
.final-actions { display:flex; flex-direction:column; align-items:center; gap:1.1rem; }
.btn-ghost { display:inline-flex; align-items:center; gap:.6rem; padding:.95rem 2rem; border-radius:100px; border:1px solid var(--line-hi); background:var(--glass);
  backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px); font-size:.8rem; letter-spacing:.1em; text-transform:uppercase; font-weight:500; color:var(--text);
  transition:border-color .35s,background .35s,transform .35s var(--ease); }
.btn-ghost:hover { border-color:rgba(0,212,255,.5); background:rgba(0,212,255,.06); transform:translateY(-2px); }
.btn-text { font-size:.76rem; letter-spacing:.08em; color:var(--t3); transition:color .3s; }
.btn-text:hover { color:var(--text); }

/* ── REVEAL ── */
.reveal { opacity:0; transform:translateY(24px); }
.reveal.is-visible { opacity:1; transform:none; transition:opacity .8s var(--ease), transform .8s var(--ease); }
[data-splitting] .char { display:inline-block; }

/* ── TRACK PLAYER ── */
.tracks { margin-top:2.4rem; width:100%; }
.tracks-label { font-size:.64rem; font-weight:600; letter-spacing:.22em; text-transform:uppercase; color:var(--t3);
  margin-bottom:1rem; display:flex; align-items:center; gap:.7rem; justify-content:flex-end; }
.tracks-label::before { content:''; flex:1; max-width:48px; height:1px; background:linear-gradient(90deg,transparent,rgba(255,255,255,.15)); }

.track-list { display:flex; flex-direction:column; gap:.45rem;
  max-height:340px; overflow-y:auto; padding-right:.4rem;
  scrollbar-width:thin; scrollbar-color:rgba(0,212,255,.3) transparent; }
.track-list::-webkit-scrollbar { width:5px; }
.track-list::-webkit-scrollbar-track { background:transparent; }
.track-list::-webkit-scrollbar-thumb { background:rgba(0,212,255,.25); border-radius:3px; }
.track-list::-webkit-scrollbar-thumb:hover { background:rgba(0,212,255,.45); }
.track-item { position:relative; display:flex; align-items:center; gap:.9rem; width:100%;
  background:var(--glass); border:1px solid var(--line); border-radius:12px; padding:.85rem 1.1rem .95rem;
  color:var(--text); text-align:left; cursor:none; overflow:hidden;
  transition:border-color .3s,background .3s,transform .18s var(--ease); }
.track-item:hover { border-color:var(--line-hi); background:var(--glass-hi); transform:translateX(-3px); }
.track-item.active { border-color:rgba(0,212,255,.28); background:rgba(0,212,255,.04); }
.track-item.active:hover { transform:translateX(-3px); }

.track-icon { width:30px; height:30px; flex-shrink:0; border-radius:50%;
  border:1px solid var(--line-hi); display:flex; align-items:center; justify-content:center;
  color:var(--t2); transition:border-color .3s,color .3s,background .3s; }
.track-item:hover .track-icon { border-color:var(--cyan); color:var(--cyan); }
.track-item.active .track-icon { border-color:var(--cyan); color:var(--cyan); background:rgba(0,212,255,.1); }

.track-meta { flex:1; min-width:0; }
.track-name { display:block; font-size:.88rem; font-weight:500; letter-spacing:.01em;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.track-genre { display:block; font-size:.62rem; letter-spacing:.12em; text-transform:uppercase;
  color:var(--t3); margin-top:.18rem; }
.track-item.active .track-genre { color:var(--cyan-soft); }

.track-prog { position:absolute; bottom:0; left:0; right:0; height:2px;
  background:rgba(255,255,255,.05); }
.track-fill { position:absolute; left:0; top:0; height:100%; width:0%;
  background:linear-gradient(90deg,var(--cyan),var(--purple));
  transition:width .12s linear; box-shadow:0 0 6px var(--cyan); }

.icon-play  { display:block; margin-left:1px; }
.icon-pause { display:none; }
.track-item.playing .icon-play  { display:none; }
.track-item.playing .icon-pause { display:block; }

@media (max-width:600px){ .track-item:hover { transform:none; } }

/* ── REDUCED MOTION ── */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after { animation-duration:.001s !important; transition-duration:.15s !important; }
  .reveal { opacity:1 !important; transform:none !important; }
  .grain { animation:none; }
}