:root{
  --ink:#0f0d0a; --ink2:#1a1611; --gold:#d9a441; --gold2:#f0c96a; --ivory:#f3ead7; --mute:#bdb29b;
  --lapis:#2f5d8a; --turq:#4a93a8; --glass:rgba(20,17,12,.62); --line:rgba(217,164,65,.28);
  --r:14px; --safe-b:env(safe-area-inset-bottom,0px); --safe-t:env(safe-area-inset-top,0px);
  --font:"Vazirmatn","Vazir","Segoe UI",Tahoma,system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0}
html,body{height:100%;background:var(--ink);color:var(--ivory);font-family:var(--font);overflow:hidden;-webkit-tap-highlight-color:transparent}
canvas#gl{position:fixed;inset:0;width:100%;height:100%;display:block;touch-action:none;cursor:grab;outline:none}
canvas#gl.grab{cursor:grabbing}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--gold2);outline-offset:2px;border-radius:8px}
.hidden{display:none!important}
[hidden]{display:none!important}

#fade{position:fixed;inset:0;background:#000;opacity:0;pointer-events:none;transition:opacity .35s ease;z-index:50}
#fade.on{opacity:1}

/* بارگذاری */
#loader{position:fixed;inset:0;z-index:60;display:grid;place-items:center;background:radial-gradient(120% 90% at 50% 40%,#2a2218,#0b0907);transition:opacity .6s,visibility .6s}
#loader.done{opacity:0;visibility:hidden}
.loader-box{text-align:center;width:min(86vw,360px)}
.loader-box .mark{width:68px;color:var(--gold);margin-bottom:10px}
.loader-box h1{font-weight:800;font-size:2.2rem;letter-spacing:.02em;margin-bottom:18px}
.bar{height:4px;background:rgba(255,255,255,.1);border-radius:4px;overflow:hidden}
.bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--gold),var(--gold2));transition:width .3s}
#loadMsg{margin-top:12px;color:var(--mute);font-size:.9rem}

/* صفحه‌ی آغاز */
#intro{position:fixed;inset:0;z-index:30;display:grid;place-items:center;padding:24px;
  background:linear-gradient(180deg,rgba(10,8,6,.55),rgba(10,8,6,.15) 40%,rgba(10,8,6,.78)),radial-gradient(90% 70% at 50% 45%,transparent,rgba(8,6,4,.6))}
.intro-inner{max-width:720px;text-align:center;animation:rise .9s cubic-bezier(.2,.7,.2,1) both}
.eyebrow{font-size:.85rem;color:var(--gold2);letter-spacing:.04em;margin-bottom:10px}
#introTitle{font-size:clamp(3.4rem,11vw,6.8rem);font-weight:800;line-height:1.05;text-shadow:0 6px 40px rgba(0,0,0,.6);background:linear-gradient(180deg,#fff3d1,#d9a441);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{margin:18px auto 26px;max-width:58ch;line-height:2;color:#efe6d2;font-size:1.02rem;text-shadow:0 2px 14px rgba(0,0,0,.7)}
.cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:10px;min-height:48px;padding:0 22px;border-radius:999px;background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);font-weight:600;transition:transform .2s,background .2s,border-color .2s}
.btn:hover{transform:translateY(-2px);border-color:var(--gold)}
.btn svg{width:20px;height:20px}
.btn.primary{background:linear-gradient(180deg,var(--gold2),var(--gold));color:#2a1d07;border-color:transparent}
.intro-opts{display:flex;gap:18px;justify-content:center;align-items:center;margin-top:22px;color:var(--mute);font-size:.88rem;flex-wrap:wrap}
select{font:inherit;background:var(--glass);color:var(--ivory);border:1px solid var(--line);border-radius:10px;padding:6px 10px;margin-inline-start:6px}
.link{color:var(--gold2);text-decoration:underline;text-underline-offset:4px;min-height:44px}
.note{margin-top:14px;font-size:.78rem;color:#a99f8a}
@keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}

/* HUD */
#hud{position:fixed;inset:0;z-index:20;pointer-events:none}
#hud>*{pointer-events:auto}
.topbar{position:absolute;top:calc(10px + var(--safe-t));inset-inline:10px;display:flex;align-items:center;gap:10px;justify-content:space-between;pointer-events:none}
.topbar>*{pointer-events:auto}
.brand{display:flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);font-weight:800}
.brand svg{width:22px;color:var(--gold)}
.seg{display:flex;padding:3px;border-radius:999px;background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.seg button{white-space:nowrap;min-height:40px;padding:0 16px;border-radius:999px;font-size:.88rem;color:var(--mute);transition:background .25s,color .25s}
.seg button.on{background:linear-gradient(180deg,var(--gold2),var(--gold));color:#2a1d07;font-weight:600}
.tools{display:flex;gap:6px;padding:4px;border-radius:999px;background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.icon{display:inline-flex;align-items:center;gap:6px;min-width:44px;min-height:44px;justify-content:center;border-radius:999px;padding:0 10px;color:var(--ivory);transition:background .2s}
.icon:hover{background:rgba(255,255,255,.1)}
.icon[aria-pressed=true]{background:rgba(217,164,65,.28);color:var(--gold2)}
.icon svg{width:22px;height:22px;flex:none}
.icon b{font-weight:400;font-size:.8rem}

.card{position:absolute;top:calc(72px + var(--safe-t));inset-inline-start:12px;width:min(340px,calc(100vw - 24px));padding:16px 18px;border-radius:var(--r);background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);animation:rise .6s both}
.kicker{font-size:.76rem;color:var(--gold2);letter-spacing:.05em}
.card h2{font-size:1.4rem;font-weight:800;margin:2px 0 10px}
.facts{display:grid;grid-template-columns:auto 1fr;gap:5px 12px;font-size:.84rem}
.facts dt{color:var(--mute)} .facts dd{margin:0}
.today{margin-top:12px;padding-top:10px;border-top:1px solid var(--line);font-size:.8rem;color:var(--mute);line-height:1.8}
.today::before{content:"امروز · ";color:var(--gold2)}

.drawer{position:absolute;top:calc(64px + var(--safe-t));inset-inline-end:10px;width:min(300px,calc(100vw - 20px));max-height:60vh;overflow:auto;padding:8px;border-radius:var(--r);background:rgba(20,17,12,.88);border:1px solid var(--line);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}
.drawer ol{list-style:none;padding:0}
.drawer button{display:flex;gap:10px;width:100%;min-height:46px;align-items:center;text-align:start;padding:0 12px;border-radius:10px}
.drawer button:hover,.drawer button.on{background:rgba(217,164,65,.18)}
.drawer .n{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line);font-size:.78rem;color:var(--gold2);flex:none}

#minimap{position:absolute;bottom:calc(86px + var(--safe-b));inset-inline-start:12px;border-radius:12px;background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(10px)}

#caption{position:absolute;inset-inline:0;bottom:calc(92px + var(--safe-b));display:flex;justify-content:center;padding:0 12px;pointer-events:none;opacity:0;transform:translateY(6px);transition:opacity .45s,transform .45s}
#caption.show{opacity:1;transform:none}
#caption p{max-width:min(760px,92vw);padding:12px 20px;border-radius:var(--r);background:rgba(10,8,5,.66);border:1px solid rgba(255,255,255,.1);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);font-size:clamp(1rem,2.4vw,1.2rem);line-height:2;text-align:center;text-shadow:0 1px 8px rgba(0,0,0,.6)}
#caption.amb p{font-size:.95rem;color:#e6dcc4;font-style:normal;background:rgba(10,8,5,.45)}

.tourbar{position:absolute;bottom:calc(14px + var(--safe-b));left:50%;translate:-50% 0;width:min(560px,calc(100vw - 24px));display:flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.icon.big{background:linear-gradient(180deg,var(--gold2),var(--gold));color:#2a1d07;min-width:48px;min-height:48px}
.icon.big:hover{background:var(--gold2)}
.track{position:relative;flex:1;height:30px;margin-inline:8px;cursor:pointer}
.track::before{content:"";position:absolute;inset-inline:0;top:13px;height:4px;border-radius:4px;background:rgba(255,255,255,.16)}
.track i#trackFill{position:absolute;top:13px;height:4px;border-radius:4px;background:linear-gradient(90deg,var(--gold),var(--gold2));inset-inline-start:0;width:0}
.track .tick{position:absolute;top:9px;width:12px;height:12px;margin-inline-start:-6px;border-radius:50%;background:var(--ink2);border:2px solid var(--gold);padding:0;transition:transform .2s}
.track .tick:hover,.track .tick.on{transform:scale(1.35);background:var(--gold2)}
.track .tick::after{content:attr(data-l);position:absolute;bottom:18px;left:50%;translate:-50% 0;white-space:nowrap;font-size:.72rem;background:rgba(10,8,5,.85);padding:3px 8px;border-radius:6px;opacity:0;pointer-events:none;transition:opacity .2s}
.track .tick:hover::after,.track .tick:focus-visible::after{opacity:1}

.hint{position:absolute;top:calc(72px + var(--safe-t));left:50%;translate:-50% 0;display:flex;gap:16px;padding:8px 16px;border-radius:999px;background:var(--glass);border:1px solid var(--line);font-size:.8rem;color:var(--mute);flex-wrap:wrap;justify-content:center;max-width:94vw}
kbd{font:inherit;font-size:.75rem;border:1px solid var(--line);border-radius:5px;padding:0 5px;margin-inline:2px;color:var(--ivory)}
.joy{position:absolute;bottom:calc(96px + var(--safe-b));inset-inline-end:20px;width:116px;height:116px;border-radius:50%;background:rgba(20,17,12,.45);border:1px solid var(--line);touch-action:none}
.joy i{position:absolute;left:50%;top:50%;width:48px;height:48px;margin:-24px;border-radius:50%;background:rgba(240,201,106,.7)}
#toast{position:absolute;top:calc(72px + var(--safe-t));left:50%;translate:-50% 0;width:max-content;padding:10px 18px;border-radius:999px;background:rgba(10,8,5,.85);border:1px solid var(--line);opacity:0;transition:opacity .4s;pointer-events:none;font-size:.9rem;max-width:92vw;text-align:center}
#toast.on{opacity:1}

dialog{margin:auto;max-width:min(560px,92vw);padding:26px;border-radius:18px;background:#1a1611;color:var(--ivory);border:1px solid var(--line);line-height:2}
dialog::backdrop{background:rgba(0,0,0,.6);backdrop-filter:blur(4px)}
dialog h2{margin-bottom:8px;color:var(--gold2)} dialog p{margin-bottom:10px;font-size:.95rem} dialog .small{font-size:.8rem;color:var(--mute)}
dialog .close{position:absolute;inset-block-start:10px;inset-inline-start:14px;font-size:1.8rem;width:44px;height:44px;color:var(--mute)}
code{direction:ltr;unicode-bidi:isolate;background:rgba(255,255,255,.08);padding:1px 6px;border-radius:5px;font-size:.85em}

@media (max-width:760px){
  .brand{display:none}
  .topbar{justify-content:space-between;inset-inline:8px}
  .seg button{padding:0 11px;font-size:.8rem}
  .tools{gap:0;padding:2px}
  .icon{min-width:42px;padding:0 6px}
  .icon b{display:none}
  .card{top:calc(66px + var(--safe-t));inset-inline-start:8px;width:calc(100vw - 16px);padding:8px 14px}
  .card h2{font-size:1.05rem;margin-bottom:0} .facts,.today{display:none}
  #minimap{width:104px;height:94px;top:calc(122px + var(--safe-t));bottom:auto;inset-inline-start:8px}
  #caption{bottom:calc(88px + var(--safe-b))}
  #caption p{padding:10px 14px;font-size:.98rem;line-height:1.85}
  .hint{display:none}
  .joy{bottom:calc(30px + var(--safe-b))}
  .tourbar{width:calc(100vw - 16px)}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important}
}