/* ==================== style.css ==================== */
/* Core layout, structure and component styling. */

*{box-sizing:border-box;margin:0;padding:0}
html,body{width:100%;height:100%;overflow:hidden;background:var(--bg);font-family:var(--f);color:var(--text);touch-action:none;user-select:none;-webkit-user-select:none}
#cv{position:fixed;inset:0;z-index:0}#cv canvas{display:block;width:100%!important;height:100%!important}

.loader{position:fixed;inset:0;z-index:9999;background:linear-gradient(165deg,#dbe7f5,#eef4fb);display:flex;align-items:center;justify-content:center}
html.night .loader{background:#0b0f1a}
.lb{text-align:center;width:min(260px,80vw)}
.ll{font-family:var(--d);font-size:2.6rem;font-weight:700;letter-spacing:.12em;background:linear-gradient(135deg,#0f172a,#0284c7);-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:1.1rem}
html.night .ll{background:linear-gradient(135deg,#fff,#7dd3fc);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.lbar{height:2px;background:rgba(15,23,42,.1);border-radius:2px;overflow:hidden;margin-bottom:.6rem}
.lp{height:100%;width:0;background:linear-gradient(90deg,#0ea5e9,#6366f1)}
.lt{font-size:.74rem;color:#64748b}

.intro{position:fixed;inset:0;z-index:9000;background:rgba(232,238,246,.97);backdrop-filter:blur(10px);display:flex;align-items:center;justify-content:center}
html.night .intro{background:rgba(6,10,20,.95)}
.ii{text-align:center;max-width:560px;width:92%;padding:1.5rem 1rem}
.hero-logo{width:68px;height:68px;margin:0 auto .9rem;filter:drop-shadow(0 0 18px rgba(14,165,233,.4))}
.ii h1{font-family:var(--d);font-size:clamp(1.55rem,4.5vw,2.4rem);font-weight:700;line-height:1.2;margin-bottom:.7rem;background:linear-gradient(180deg,#0f172a,#0284c7);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
html.night .ii h1{background:linear-gradient(180deg,#fff,#7dd3fc);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-sub{color:var(--muted);font-size:clamp(.88rem,2vw,1.02rem);line-height:1.5;margin-bottom:1.2rem}
.hero-tags{display:flex;flex-wrap:wrap;gap:.4rem;justify-content:center;margin-bottom:1.3rem}
.hero-tags span{font-size:.7rem;font-weight:600;padding:.25rem .65rem;border-radius:999px;background:var(--glass);border:1px solid var(--gb);color:var(--text)}
.ibts{display:flex;flex-wrap:wrap;gap:.6rem;justify-content:center;margin-bottom:1.3rem}
.btn{font-family:var(--f);font-size:.86rem;font-weight:600;padding:.75rem 1.4rem;border-radius:999px;border:none;cursor:pointer;letter-spacing:.01em}
.bp{background:linear-gradient(135deg,#0ea5e9,#6366f1);color:#fff;box-shadow:0 5px 18px rgba(14,165,233,.3)}
.bs{background:var(--glass);color:var(--text);border:1px solid var(--gb)}
.how-to{background:var(--card);border:1px solid var(--gb);border-radius:12px;padding:.9rem 1rem;margin:0 auto;max-width:440px;text-align:left;font-size:.8rem;line-height:1.5;color:var(--ct);box-shadow:var(--sh)}
.how-to strong{color:var(--acc)}.how-to ul{margin:.35rem 0 0;padding-left:1.1rem}.how-to li{margin:.18rem 0}
.how-to kbd{display:inline-block;background:var(--acc);color:#fff;padding:.05rem .3rem;border-radius:3px;font-size:.68rem;font-weight:600}

.hud{position:fixed;inset:0;z-index:100;pointer-events:none}.hud>*{pointer-events:auto}
.top{position:absolute;top:0;left:0;right:0;height:48px;padding:0 .8rem;display:flex;align-items:center;justify-content:space-between;background:linear-gradient(180deg,rgba(255,255,255,.5),transparent);backdrop-filter:blur(6px)}
html.night .top{background:linear-gradient(180deg,rgba(0,0,0,.45),transparent)}
.brand{font-family:var(--d);font-size:1.05rem;font-weight:700;letter-spacing:.08em;background:linear-gradient(135deg,#0f172a,#0284c7);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
html.night .brand{background:linear-gradient(135deg,#fff,#7dd3fc);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.loc{font-size:.7rem;font-weight:500;background:var(--glass);border:1px solid var(--gb);padding:.22rem .55rem;border-radius:999px;max-width:34vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.acts{display:flex;gap:.2rem}
.ib{width:32px;height:32px;border-radius:9px;border:1px solid var(--gb);background:var(--glass);color:var(--text);font-size:.82rem;cursor:pointer;display:flex;align-items:center;justify-content:center}
.ib.wa{background:rgba(37,211,102,.18);border-color:rgba(37,211,102,.4);color:#16a34a}
.mmap{position:absolute;top:52px;right:.5rem;width:96px;height:96px;border-radius:10px;background:var(--card);border:1px solid var(--gb);box-shadow:var(--sh);overflow:hidden;z-index:120}
.mmap canvas{width:100%;height:100%;display:block}.mmap .ml{position:absolute;bottom:2px;left:0;right:0;text-align:center;font-size:.48rem;color:var(--cm)}
.flr{position:absolute;top:52px;left:.5rem;background:var(--glass);border:1px solid var(--gb);border-radius:9px;padding:.28rem .55rem;font-size:.66rem;font-weight:600;z-index:120}.flr span{color:var(--acc)}
.pad{position:absolute;bottom:max(.7rem,env(safe-area-inset-bottom));left:max(.6rem,env(safe-area-inset-left));display:flex;flex-direction:column;align-items:center;gap:.18rem;z-index:150}
.pr{display:flex;gap:.18rem}
.mb{width:44px;height:44px;border-radius:11px;border:1px solid #cbd5e1;background:#f8fafc;color:#0f172a;font-size:1rem;font-weight:600;cursor:pointer;box-shadow:0 3px 10px rgba(0,0,0,.1);display:flex;align-items:center;justify-content:center;touch-action:manipulation;-webkit-tap-highlight-color:transparent}
.mb:active,.mb.on{background:#0ea5e9;border-color:#0284c7;color:#fff}
html.night .mb{background:#1e293b;border-color:#334155;color:#e2e8f0}
.joy{position:absolute;bottom:max(.7rem,env(safe-area-inset-bottom));right:max(.6rem,env(safe-area-inset-right));display:flex;flex-direction:column;align-items:center;gap:.18rem;z-index:150}
.jb{width:88px;height:88px;border-radius:50%;background:#f8fafc;border:1px solid #cbd5e1;box-shadow:0 5px 16px rgba(0,0,0,.12);position:relative;touch-action:none}
html.night .jb{background:#1e293b;border-color:#334155}
.js{width:34px;height:34px;border-radius:50%;background:linear-gradient(145deg,#0ea5e9,#6366f1);border:2px solid rgba(255,255,255,.3);position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);pointer-events:none}
.jl{font-size:.5rem;letter-spacing:.08em;color:var(--muted)}

.card{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:min(400px,92vw);max-height:74vh;z-index:200}
.ci{background:var(--card);border:1px solid var(--gb);border-radius:14px;box-shadow:var(--sh);padding:1.2rem;overflow-y:auto;max-height:74vh;position:relative;color:var(--ct)}
.ci .x{position:absolute;top:.55rem;right:.55rem;width:26px;height:26px;border-radius:50%;border:1px solid var(--gb);background:rgba(0,0,0,.05);color:var(--ct);cursor:pointer;font-size:.75rem;display:flex;align-items:center;justify-content:center}
.ci .ico{font-size:1.35rem;margin-bottom:.15rem;font-weight:700;color:var(--acc)}
.ci h2{font-family:var(--d);font-size:1.12rem;font-weight:600;margin-bottom:.25rem}
.ci .ds{color:var(--cm);font-size:.82rem;line-height:1.5;margin-bottom:.75rem}
.ci h4{font-size:.68rem;text-transform:uppercase;letter-spacing:.06em;color:var(--acc);margin:.7rem 0 .25rem}
.ci ul{list-style:none}.ci li{padding:.22rem 0 .22rem .95rem;border-bottom:1px solid rgba(128,128,128,.08);font-size:.82rem;position:relative;line-height:1.4}
.ci li::before{content:'•';position:absolute;left:0;color:var(--acc);font-weight:700}
.dir{position:absolute;top:52px;left:.5rem;width:min(230px,82vw);max-height:55vh;background:var(--card);border:1px solid var(--gb);border-radius:12px;box-shadow:var(--sh);overflow:hidden;display:flex;flex-direction:column;color:var(--ct);z-index:140}
.dh{display:flex;align-items:center;justify-content:space-between;padding:.6rem .65rem .2rem}.dh h3{font-family:var(--d);font-size:.84rem}
.dir input{width:calc(100% - 1.2rem);margin:0 .6rem .35rem;padding:.35rem .55rem;border-radius:999px;border:1px solid var(--gb);background:rgba(15,23,42,.04);color:var(--ct);font-size:.74rem;outline:none}
.dir ul{list-style:none;overflow-y:auto;padding:0 .25rem .35rem;flex:1}
.dir li{display:flex;align-items:center;gap:.35rem;padding:.4rem .45rem;border-radius:8px;cursor:pointer;font-size:.76rem}
.dir li:active{background:rgba(14,165,233,.12)}.dir .dot{width:7px;height:7px;border-radius:50%;flex-shrink:0}

.cover{position:fixed;inset:0;z-index:500;background:rgba(232,238,246,.9);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;padding:.6rem}
html.night .cover{background:rgba(4,8,16,.85)}
.cp{width:min(400px,100%);max-height:88vh;overflow-y:auto;background:var(--card);border:1px solid var(--gb);border-radius:14px;padding:1.15rem 1.05rem;position:relative;box-shadow:var(--sh);color:var(--ct)}
.cp .x{position:absolute;top:.55rem;right:.55rem;width:26px;height:26px;border-radius:50%;border:1px solid var(--gb);background:rgba(0,0,0,.05);color:var(--ct);cursor:pointer}
.cp h2{font-family:var(--d);font-size:1.12rem;margin-bottom:.15rem}.cp>p{color:var(--cm);margin-bottom:.75rem;font-size:.8rem}
.cp form{display:flex;flex-direction:column;gap:.42rem}.fr{display:grid;grid-template-columns:1fr 1fr;gap:.35rem}
.cp input,.cp select,.cp textarea{width:100%;padding:.52rem .7rem;border-radius:9px;border:1px solid var(--gb);background:rgba(15,23,42,.04);color:var(--ct);font-family:var(--f);font-size:.8rem;outline:none}
html.night .cp input,html.night .cp select,html.night .cp textarea{background:rgba(0,0,0,.16)}
.cp textarea{min-height:60px;resize:vertical}
.bwa{display:flex;align-items:center;justify-content:center;gap:.25rem;margin-top:.5rem;width:100%;padding:.62rem;border-radius:999px;border:none;background:linear-gradient(135deg,#25d366,#128c7e);color:#fff;font-weight:600;font-size:.82rem;cursor:pointer}
.cd{margin-top:.55rem;text-align:center;font-size:.72rem}.cd a{color:var(--acc);text-decoration:none}

.toast{position:fixed;bottom:5.5rem;left:50%;transform:translateX(-50%);background:var(--glass);border:1px solid var(--gb);padding:.42rem .9rem;border-radius:999px;font-size:.74rem;z-index:300;box-shadow:var(--sh);max-width:88vw;text-align:center;font-weight:500}

/* Interaction prompt – Press E / Tap to enter a room */
.prompt{
  position:absolute;
  bottom:max(6.2rem, calc(env(safe-area-inset-bottom) + 5.4rem));
  left:50%;
  transform:translateX(-50%);
  z-index:160;
  background:var(--card);
  border:1px solid var(--gb);
  color:var(--ct);
  padding:.55rem 1.1rem;
  border-radius:999px;
  font-size:.8rem;
  font-weight:500;
  box-shadow:var(--sh);
  white-space:nowrap;
  pointer-events:auto;
  cursor:pointer;
  backdrop-filter:blur(8px);
}
.prompt kbd{
  display:inline-block;
  background:var(--acc);
  color:#fff;
  padding:.12rem .4rem;
  border-radius:5px;
  font-size:.72rem;
  font-weight:600;
  margin:0 .12rem;
  font-family:var(--f);
}
.prompt.hide{opacity:0;visibility:hidden;pointer-events:none}

.err{position:fixed;inset:0;z-index:10000;background:#0f172a;color:#f1f5f9;display:none;align-items:center;justify-content:center;padding:1.4rem;text-align:center}
.err.show{display:flex}.err pre{margin-top:.9rem;font-size:.72rem;color:#94a3b8;max-width:90vw;overflow:auto;text-align:left}

/* Premium polish + accessibility + navigation UI */
.ib:focus-visible,.btn:focus-visible,.mb:focus-visible{outline:2px solid var(--acc);outline-offset:2px}
.card .ci{max-height:min(74vh,620px)}
#btnTour{font-size:.7rem}
#btnSound{font-size:.78rem}
.breadcrumb{position:absolute;top:52px;left:50%;transform:translateX(-50%);background:var(--glass);border:1px solid var(--gb);padding:.18rem .55rem;border-radius:999px;font-size:.62rem;font-weight:500;z-index:120;max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;pointer-events:none}
.visited-dot{width:6px;height:6px;border-radius:50%;background:var(--acc);display:inline-block;margin-left:.25rem}