:root{
  --bg:#020806;
  --em:#2fe0a0;
  --em-2:#0f8a5f;
  --em-deep:#06261a;
  --ink:#e9f5ef;
  --mute:rgba(233,245,239,.55);
  --line:rgba(233,245,239,.16);
  --glass:rgba(4,18,12,.62);
  --serif:"Cormorant Garamond",Georgia,serif;
  --mono:"JetBrains Mono",ui-monospace,monospace;
  color-scheme:dark;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;background:var(--bg);color:var(--ink);overflow:hidden}
body{font:14px/1.45 var(--mono);-webkit-font-smoothing:antialiased}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
[hidden]{display:none!important}

/* ---------- stage ---------- */
#stage{position:fixed;inset:0;overflow:hidden}
#vid{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  filter:contrast(1.06) saturate(1.04);transition:filter 2.4s ease,transform 2.4s ease}
.grade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,120,80,.18),rgba(0,40,24,.22));
  mix-blend-mode:soft-light;pointer-events:none}
#grain{position:absolute;inset:-10%;width:120%;height:120%;opacity:.09;mix-blend-mode:overlay;pointer-events:none;image-rendering:pixelated}
.vignette{position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse at center,transparent 45%,rgba(0,6,3,.55) 80%,rgba(0,4,2,.9) 100%)}
body.ambient #vid{filter:blur(18px) saturate(1.3) brightness(.55);transform:scale(1.08)}

.mark{font-size:11px;letter-spacing:.2em;color:var(--mute);text-transform:lowercase}

/* ---------- splash ---------- */
#splash{position:fixed;inset:0;display:grid;place-items:center;background:var(--bg);z-index:10;
  transition:opacity 1.4s ease,visibility 1.4s}
#splash.gone{opacity:0;visibility:hidden}
#splash .mark{position:absolute;bottom:24px;left:0;right:0;text-align:center}
#enter{display:flex;flex-direction:column;align-items:center;gap:28px;padding:24px}
.iris{position:relative;width:min(46vw,220px);aspect-ratio:1;display:block}
.iris .r{position:absolute;inset:0;border-radius:50%;border:1px solid var(--em);opacity:.0;
  animation:ring 3.6s cubic-bezier(.2,.6,.3,1) infinite}
.iris .r2{animation-delay:1.2s}.iris .r3{animation-delay:2.4s}
.iris .pupil{position:absolute;inset:22%;border-radius:50%;
  background:radial-gradient(circle,#000 0 26%,var(--em-deep) 27%,var(--em-2) 52%,var(--em) 64%,var(--em-deep) 72%,transparent 74%);
  box-shadow:0 0 60px rgba(47,224,160,.25),inset 0 0 30px rgba(0,0,0,.6);
  animation:breathe 3.6s ease-in-out infinite}
@keyframes ring{0%{transform:scale(.45);opacity:0}25%{opacity:.7}100%{transform:scale(1.15);opacity:0}}
@keyframes breathe{50%{transform:scale(1.06);box-shadow:0 0 90px rgba(47,224,160,.4),inset 0 0 30px rgba(0,0,0,.6)}}
#enter h1{font:300 clamp(40px,8vw,88px)/1 var(--serif);letter-spacing:.02em;font-style:italic}
#enter .hint{font-size:11px;letter-spacing:.24em;color:var(--mute);text-transform:uppercase}
#enter:hover .pupil{filter:brightness(1.2)}
#enter:focus-visible{outline:1px solid var(--em);outline-offset:8px;border-radius:12px}

/* ---------- hud ---------- */
#hud{position:fixed;inset:0;z-index:5;display:flex;flex-direction:column;justify-content:space-between;
  padding:max(16px,env(safe-area-inset-top)) max(16px,env(safe-area-inset-right)) max(16px,env(safe-area-inset-bottom)) max(16px,env(safe-area-inset-left));
  transition:opacity .6s ease}
body.idle #hud{opacity:0;cursor:none}
body.idle #hud *{pointer-events:none}
.top{display:flex;justify-content:space-between;align-items:flex-start;gap:16px}
.meta{display:flex;flex-direction:column}
.artist{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--mute)}
.song{font:italic 300 clamp(28px,4vw,44px)/1.05 var(--serif)}
.center-toggle{position:absolute;inset:0;z-index:-1}
.bottom{display:flex;flex-direction:column;gap:12px}
.row{display:flex;align-items:center;gap:6px}
.sp{flex:1}
.ic{width:40px;height:40px;display:grid;place-items:center;border-radius:50%;transition:background .2s}
.ic:hover{background:rgba(255,255,255,.08)}
.ic:focus-visible{outline:1px solid var(--em)}
.ic svg{width:20px;height:20px;fill:currentColor}
#play .p-play{display:none}
body.paused #play .p-play{display:block}
body.paused #play .p-pause{display:none}
#mute .x{display:none}
body.muted #mute .x{display:block}
body.muted #mute .w{display:none}
.time{font-size:12px;color:var(--mute);margin-left:4px;font-variant-numeric:tabular-nums}
.chap{font:italic 300 18px var(--serif);color:var(--em);margin-left:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.bar{position:relative;height:22px;cursor:pointer;touch-action:none}
.bar::before,.buf,.fill{content:"";position:absolute;left:0;top:10px;height:2px;border-radius:2px}
.bar::before{right:0;background:var(--line)}
.buf{background:rgba(233,245,239,.22);width:0}
.fill{background:var(--em);width:0;box-shadow:0 0 12px rgba(47,224,160,.6)}
.bar:hover .fill,.bar:hover::before,.bar:hover .buf{height:4px;top:9px}
.ticks i{position:absolute;top:6px;width:1px;height:10px;background:rgba(233,245,239,.5)}
.ticks i.on{background:var(--em)}
.tip{position:absolute;bottom:24px;transform:translateX(-50%);padding:4px 8px;border-radius:6px;
  background:var(--glass);backdrop-filter:blur(8px);font-size:11px;white-space:nowrap;opacity:0;transition:opacity .15s;pointer-events:none}
.bar:hover .tip{opacity:1}

/* ---------- ambient ---------- */
#ambient{position:fixed;inset:0;z-index:6;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  text-align:center;padding:16px;animation:fadein 2.4s ease both}
#ambient h2{font:italic 300 clamp(48px,10vw,120px)/1 var(--serif)}
#ambient p{color:var(--mute);font-size:12px;letter-spacing:.18em;text-transform:uppercase}
.acts{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap;justify-content:center}
@keyframes fadein{from{opacity:0}}
.pill{padding:10px 20px;border-radius:999px;background:var(--em);color:#02140c;font-size:12px;letter-spacing:.08em;transition:filter .2s,transform .2s}
.pill:hover{filter:brightness(1.12)}
.pill:active{transform:scale(.97)}
.pill.ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1px var(--line)}
.pill:focus-visible{outline:1px solid var(--em);outline-offset:3px}

/* ---------- loader ---------- */
.loader{position:absolute;left:50%;top:50%;width:56px;height:56px;margin:-28px 0 0 -28px;opacity:0;transition:opacity .3s;pointer-events:none}
body.buffering .loader{opacity:1}
.loader i{position:absolute;inset:0;border-radius:50%;border:1px solid rgba(47,224,160,.25);border-top-color:var(--em);animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(1turn)}}
#enter .hint b{font-weight:400;color:var(--em)}

/* ---------- lyrics ---------- */
#lyrics{position:fixed;left:0;right:0;bottom:clamp(96px,16vh,150px);z-index:4;text-align:center;pointer-events:none;
  padding:0 16px;text-shadow:0 2px 24px rgba(0,0,0,.8),0 0 2px rgba(0,0,0,.6)}
#lyrics p{font:italic 300 var(--ls,clamp(22px,3.4vw,40px))/1.2 var(--serif);transition:opacity .5s,transform .5s;min-height:1.2em}
#lyrics .prev,#lyrics .next{--ls:clamp(15px,1.8vw,20px);opacity:.38}
#lyrics .prev{opacity:.22}
#lyrics .cur{color:#fff;margin:6px 0}
#lyrics.swap .cur{opacity:0;transform:translateY(8px)}
body.ambient #lyrics{display:none}
#lyricsbtn.on{color:var(--em)}

/* ---------- guestbook ---------- */
#scrim{position:fixed;inset:0;z-index:7;background:rgba(0,5,3,.35);animation:fadein .3s ease both}
#book{position:fixed;top:12px;right:12px;bottom:12px;z-index:8;width:min(420px,calc(100% - 24px));display:flex;flex-direction:column;
  background:linear-gradient(180deg,rgba(10,40,28,.86),rgba(3,14,9,.92) 40%);
  backdrop-filter:blur(26px) saturate(1.4);-webkit-backdrop-filter:blur(26px) saturate(1.4);
  border:1px solid rgba(47,224,160,.14);border-radius:22px;box-shadow:0 30px 80px rgba(0,0,0,.55);
  overflow:hidden;animation:slidein .5s cubic-bezier(.2,.8,.2,1) both}
@keyframes slidein{from{transform:translateX(calc(100% + 24px))}}
.bk-grip{display:none}
.bk-head{display:flex;justify-content:space-between;align-items:flex-start;padding:20px 16px 14px 22px;border-bottom:1px solid var(--line)}
.bk-head h3{font:italic 300 40px/1 var(--serif)}
.bk-sub{display:block;margin-top:6px;font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--mute)}

#list{list-style:none;overflow-y:auto;flex:1;padding:8px 14px 8px 22px;scrollbar-width:thin;scrollbar-color:rgba(47,224,160,.25) transparent;
  -webkit-mask:linear-gradient(transparent,#000 14px,#000 calc(100% - 14px),transparent)}
#list li{display:grid;grid-template-columns:34px 1fr;gap:12px;padding:14px 0;animation:fadein .5s ease both}
#list li+li{border-top:1px solid rgba(233,245,239,.07)}
.av{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;font:italic 400 18px var(--serif);color:#02140c;
  background:radial-gradient(circle at 35% 30%,hsl(var(--h) 80% 72%),hsl(var(--h) 70% 38%))}
#list .n{display:flex;flex-wrap:wrap;gap:4px 8px;align-items:baseline}
#list .n b{font-weight:400;font-size:12px;color:var(--ink)}
#list .n small{color:var(--mute);font-size:10px}
#list .w{font-size:10px;color:var(--em);background:rgba(47,224,160,.1);border-radius:999px;padding:1px 7px}
#list p{margin-top:3px;white-space:pre-wrap;overflow-wrap:anywhere;font:400 18px/1.35 var(--serif);color:rgba(233,245,239,.92)}
#list .empty{display:block;text-align:center;padding:48px 0;color:var(--mute);font:italic 300 20px var(--serif)}

#form{margin:10px;padding:12px 12px 10px;border-radius:16px;background:rgba(0,0,0,.32);border:1px solid var(--line);transition:border-color .2s}
#form:focus-within{border-color:rgba(47,224,160,.5)}
#msg{display:block;width:100%;background:none;border:0;outline:none;resize:none;color:var(--ink);
  font:400 18px/1.35 var(--serif);max-height:140px;padding:2px 2px 8px}
#msg::placeholder,#name::placeholder{color:rgba(233,245,239,.35)}
.cmp-row{display:flex;align-items:center;gap:8px;font-size:11px;color:var(--mute)}
.as{display:flex;align-items:center;gap:4px}
#name{background:none;border:0;border-bottom:1px dashed var(--line);outline:none;color:var(--ink);font:inherit;padding:2px 0;min-width:0;width:11ch}
#name:focus{border-bottom-color:var(--em)}
.chip{display:inline-flex;align-items:center;gap:6px;padding:5px 10px;border-radius:999px;font-size:11px;
  background:rgba(255,255,255,.05);box-shadow:inset 0 0 0 1px var(--line);transition:background .2s;white-space:nowrap}
.chip:hover{background:rgba(255,255,255,.1)}
.chip .dot{width:6px;height:6px;border-radius:50%;background:rgba(233,245,239,.35)}
.chip.on{color:var(--em);box-shadow:inset 0 0 0 1px rgba(47,224,160,.35)}
.chip.on .dot{background:var(--em);box-shadow:0 0 8px var(--em)}
#count{font-variant-numeric:tabular-nums}
#count.warn{color:#ffcf7a}
.send{width:34px;height:34px;flex-shrink:0;border-radius:50%;display:grid;place-items:center;background:var(--em);color:#02140c;transition:transform .2s,opacity .2s}
.send svg{width:18px;height:18px}
.send:disabled{opacity:.35;cursor:default}
.send:not(:disabled):hover{transform:translateX(2px)}
.chip:focus-visible,.send:focus-visible{outline:1px solid var(--em);outline-offset:2px}
#err{font-size:11px;color:#ff9b8a;min-height:0}
#err:not(:empty){margin-top:8px}

@media (max-width:600px){
  .time{display:none}
  .chap{font-size:16px;margin-left:2px}
  #hud .top .mark{display:none}
  #book{top:auto;left:0;right:0;bottom:0;width:100%;height:82vh;height:82dvh;border-radius:22px 22px 0 0;border-bottom:0;
    animation-name:sheetup;padding-bottom:env(safe-area-inset-bottom)}
  @keyframes sheetup{from{transform:translateY(100%)}}
  .bk-grip{display:block;width:40px;height:4px;border-radius:4px;background:rgba(233,245,239,.25);margin:8px auto 0}
  .bk-head{padding-top:12px}
  .chip span{max-width:12ch;overflow:hidden;text-overflow:ellipsis}
}
@media (prefers-reduced-motion:reduce){
  .iris .r,.iris .pupil{animation:none}
  .iris .r1{opacity:.5}
  #grain{display:none}
}