:root{
  --ink:#07090C;
  --moon:#3D5A73;
  --warm:#FFD9A0;
  --plaster:#3A3630;
  --teal:#2E5A5C;
  --ochre:#8A6A3E;
  --ivory:#C9BFA8;
  --paper:#D8CBA8;
  --paperink:#24345C;
  --ghost:#E8EEF0;
  --lantern:#9FB08A;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0;height:100%;background:#000;overflow:hidden;
  font-family:'IBM Plex Sans Arabic',sans-serif;color:var(--ivory);
  -webkit-user-select:none;user-select:none;touch-action:none;overscroll-behavior:none}
#app{position:fixed;inset:0;overflow:hidden}
#scene{position:absolute;inset:0;width:100%;height:100%;display:block;background:#07090C}

/* ---------- overlays ---------- */
.overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(120% 100% at 50% 30%,rgba(10,14,20,.55),rgba(4,5,8,.92));
  z-index:50;overflow:hidden}
.overlay[hidden]{display:none}
.sheet-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.10;filter:saturate(.4) brightness(.5)}

/* menu */
#menuBg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.62;
  filter:brightness(.9) contrast(1.02)}
#menu::after{content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(4,6,10,.96) 0%,rgba(5,8,12,.35) 45%,rgba(4,6,10,.7) 100%)}
.menu-inner{position:relative;z-index:2;text-align:center;width:min(520px,88vw);padding:6vh 0}
.title{font-family:'Reem Kufi',serif;font-weight:700;color:var(--ivory);
  font-size:clamp(30px,9vw,64px);margin:0;letter-spacing:.02em;line-height:1.25;
  text-shadow:0 2px 30px rgba(0,0,0,.9)}
.subtitle{color:#8f9aa6;font-size:clamp(13px,3.4vw,18px);margin:.4em 0 2.2em;font-weight:400}
.menu-nav{display:flex;flex-direction:column;gap:.15em;align-items:center}
.menu-item{background:none;border:0;color:var(--ivory);font-family:'IBM Plex Sans Arabic',sans-serif;
  font-size:clamp(16px,4.4vw,22px);font-weight:400;padding:.55em 1em;min-height:56px;min-width:200px;
  cursor:pointer;opacity:.85;transition:opacity .15s,letter-spacing .2s}
.menu-item:hover,.menu-item:focus{opacity:1;letter-spacing:.06em;outline:none}
.menu-item[hidden]{display:none}
.menu-hint{margin-top:2.4em;color:#6c7681;font-size:clamp(11px,3vw,14px)}

/* paper panels */
.paper{position:relative;z-index:2;width:min(560px,90vw);max-height:86vh;overflow:auto;
  background:linear-gradient(180deg,#efe6cf,#ddd0b2);color:#2b241a;border-radius:2px;
  padding:26px 26px 30px;box-shadow:0 30px 80px rgba(0,0,0,.75)}
.paper h2{font-family:'Reem Kufi',serif;font-size:clamp(22px,6vw,34px);margin:0 0 .5em;color:#241f18}
.help-list{margin:0 0 1.4em;padding-inline-start:1.1em;line-height:1.9;font-size:clamp(14px,3.7vw,17px)}
.help-list b{color:#6a4a26}
.btn{font-family:'IBM Plex Sans Arabic',sans-serif;font-size:16px;font-weight:600;
  background:rgba(36,31,24,.08);border:1px solid rgba(36,31,24,.35);color:#241f18;
  padding:.6em 1.4em;border-radius:4px;cursor:pointer;min-height:48px}
.btn.wide{display:block;width:100%;margin:.35em 0}
.btn:hover{background:rgba(36,31,24,.16)}
.pause-paper{text-align:center}
.r-sub{font-size:13px;color:#5a4a35;margin:-.4em 0 1em}
.rw-row{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 16px}
.rw-chip{font-family:'IBM Plex Sans Arabic',sans-serif;font-size:13px;padding:.6em .9em;border-radius:4px;
  border:1px solid rgba(36,31,24,.4);background:rgba(36,31,24,.06);color:#241f18;cursor:pointer;min-height:40px}
.rw-chip.sel{background:#24345C;color:#e8ddc2;border-color:#24345C}
.rw-chip.locked{opacity:.55}
.rw-stamps{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
#rewardsPaper h3{font-family:'Reem Kufi',serif;font-size:18px;color:#2b241a;margin:14px 0 4px}

/* settings */
.set-row{display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:.7em 0;border-bottom:1px dashed rgba(36,31,24,.28);font-size:15px}
.set-row:last-child{border-bottom:0}
.set-row label{color:#2b241a}
.set-row input[type=range]{-webkit-appearance:none;appearance:none;width:150px;height:22px;background:none}
.set-row input[type=range]::-webkit-slider-runnable-track{height:2px;background:#5a4a30}
.set-row input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;
  border-radius:50%;background:#24345C;margin-top:-7px}
.set-row input[type=range]::-moz-range-track{height:2px;background:#5a4a30}
.set-row input[type=range]::-moz-range-thumb{width:16px;height:16px;border:0;border-radius:50%;background:#24345C}
.set-row select{font-family:inherit;background:#e2d7bd;border:1px solid rgba(36,31,24,.3);
  color:#241f18;padding:.3em .5em;border-radius:3px}
.set-toggle{width:52px;height:30px;border-radius:15px;background:#b7ac92;border:1px solid rgba(36,31,24,.3);
  position:relative;cursor:pointer;flex:0 0 auto}
.set-toggle::after{content:"";position:absolute;top:2px;right:2px;width:24px;height:24px;border-radius:50%;
  background:#24345C;transition:right .15s}
.set-toggle.on{background:#24345C}
.set-toggle.on::after{right:26px;background:#e2d7bd}

/* ---------- HUD ---------- */
#hud{position:absolute;inset:0;z-index:20;pointer-events:none}
#hud[hidden]{display:none}
.vignette{position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(120% 95% at 50% 50%,rgba(7,9,12,0) 42%,rgba(7,9,12,.55) 78%,rgba(4,6,9,.94) 100%);
  transition:opacity .8s}
.dmg{position:absolute;inset:0;pointer-events:none;opacity:0;
  background:radial-gradient(120% 90% at 50% 50%,rgba(232,238,240,0) 45%,rgba(150,170,185,.5) 100%);
  transition:opacity .18s}
.grain{position:absolute;inset:-50%;pointer-events:none;opacity:.09;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='140' height='140'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/></filter><rect width='140' height='140' filter='url(%23n)'/></svg>");
  background-size:140px 140px;animation:grainshift .9s steps(3) infinite}
@keyframes grainshift{0%{transform:translate(0,0)}33%{transform:translate(-3%,2%)}66%{transform:translate(2%,-3%)}100%{transform:translate(0,0)}}
.safe{position:absolute;top:0;left:0;right:0;
  padding:calc(env(safe-area-inset-top,0px) + 8px) calc(env(safe-area-inset-right,0px) + 10px) 0 calc(env(safe-area-inset-left,0px) + 10px)}
.top-bar{display:flex;gap:8px;justify-content:center}
.top-btn{position:relative;pointer-events:auto;width:46px;height:46px;border-radius:50%;
  background:rgba(10,14,20,.30);border:1px solid rgba(201,191,168,.55);backdrop-filter:blur(2px);
  cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0}
.top-btn svg{width:24px;height:24px;fill:var(--ivory);opacity:.92}
.top-btn.off svg{opacity:.4}
.top-btn:active{background:rgba(20,26,34,.55)}
.top-btn .badge{position:absolute;top:-3px;left:-3px;min-width:17px;height:17px;border-radius:9px;
  background:var(--ghost);color:#10141a;font-size:11px;line-height:17px;text-align:center;padding:0 4px;font-weight:600}
#batteryBadge{background:var(--ochre);color:#fff}

.ctx{position:absolute;right:calc(env(safe-area-inset-right,0px) + 22px);top:50%;
  transform:translateY(-50%);width:76px;height:76px;border-radius:50%;
  background:rgba(10,14,20,.30);border:1px solid rgba(201,191,168,.6);backdrop-filter:blur(2px);
  pointer-events:auto;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:2px;padding:0;z-index:22}
.ctx[hidden]{display:none}
.ctx svg{width:30px;height:30px;fill:var(--ivory)}
.ctx-label{font-size:11px;color:var(--ivory);max-width:70px;line-height:1.1}
.ctx:active{background:rgba(30,40,52,.6)}
.ctx.fire{animation:ctxpulse .6s ease-in-out infinite alternate}
@keyframes ctxpulse{from{box-shadow:0 0 0 0 rgba(232,238,240,.0)}to{box-shadow:0 0 22px 4px rgba(232,238,240,.55)}}

.stick{position:absolute;left:calc(env(safe-area-inset-left,0px) + 20px);bottom:calc(env(safe-area-inset-bottom,0px) + 26px);
  width:132px;height:132px;pointer-events:auto;touch-action:none;z-index:22}
.stick-ring{position:absolute;inset:0;border-radius:50%;border:1px solid rgba(201,191,168,.5);
  background:rgba(10,14,20,.26)}
.stick-knob{position:absolute;left:50%;top:50%;width:58px;height:58px;border-radius:50%;
  transform:translate(-50%,-50%);border:1px solid rgba(201,191,168,.65);background:rgba(40,48,58,.35)}

.run-btn{position:absolute;left:calc(env(safe-area-inset-left,0px) + 168px);bottom:calc(env(safe-area-inset-bottom,0px) + 40px);
  width:60px;height:60px;border-radius:50%;background:rgba(10,14,20,.30);
  border:1px solid rgba(201,191,168,.5);pointer-events:auto;cursor:pointer;display:flex;align-items:center;justify-content:center;z-index:22}
.run-btn svg{width:26px;height:26px;fill:var(--ivory);opacity:.85}
.run-btn.active{background:rgba(46,90,92,.5)}

.toast{position:absolute;left:50%;bottom:calc(env(safe-area-inset-bottom,0px) + 180px);transform:translateX(-50%);
  background:rgba(8,11,16,.82);border:1px solid rgba(201,191,168,.4);color:var(--ivory);
  padding:.5em 1em;border-radius:4px;font-size:14px;max-width:78vw;text-align:center;z-index:24}
.toast[hidden]{display:none}
.toast.saved{font-family:'Aref Ruqaa',serif;font-size:20px}
.prompt{position:absolute;left:50%;top:16%;transform:translateX(-50%);color:var(--ghost);
  font-size:15px;text-align:center;max-width:80vw;text-shadow:0 1px 8px #000;z-index:23;opacity:.9}
.prompt[hidden]{display:none}

.caption{position:absolute;left:50%;top:20%;transform:translateX(-50%);
  text-align:center;color:var(--ghost);font-family:'Aref Ruqaa',serif;font-size:clamp(15px,4vw,21px);
  max-width:84vw;text-shadow:0 2px 14px #000,0 0 30px #000;z-index:26;transition:opacity .5s;padding:0 10px}
.caption[hidden]{display:none}

/* ---------- notebook ---------- */
.book-overlay{background:radial-gradient(120% 100% at 50% 40%,rgba(6,9,13,.55),rgba(3,4,7,.82))}
.notebook{position:relative;width:min(620px,94vw);height:min(82vh,760px);display:flex;
  background:#e8ddc2;box-shadow:0 30px 90px rgba(0,0,0,.8);border-radius:3px;overflow:hidden}
.book-page{flex:1;padding:26px 24px 70px;overflow:auto;position:relative;
  background:
    repeating-linear-gradient(to bottom,transparent 0 27px,rgba(36,52,92,.18) 27px 28px),
    linear-gradient(180deg,#e0d3b3,#d3c4a0);
  color:var(--paperink);font-family:'Aref Ruqaa',serif;font-size:17px;line-height:28px}
.book-page h3{font-family:'Reem Kufi',serif;color:#2b241a;margin:.2em 0 .4em;font-size:22px}
.book-page .entry{border-bottom:1px dashed rgba(36,52,92,.35);padding:10px 0}
.book-page .entry .src{font-family:'IBM Plex Sans Arabic',sans-serif;color:#7a5a2e;font-size:12px}
.book-page .entry .title{font-weight:700;font-size:19px}
.book-page .polaroid{float:left;width:120px;background:#fff;padding:5px 5px 20px;margin:4px 0 8px 12px;
  transform:rotate(-2deg);box-shadow:0 4px 12px rgba(0,0,0,.3);font-family:'IBM Plex Sans Arabic',sans-serif;font-size:11px;color:#555;text-align:center}
.book-page .polaroid img{width:100%;display:block;filter:saturate(.7)}
.book-page .note{margin-inline-start:0;color:#24345C}
.book-page .note.other{color:#5a2f2f;font-size:15px;transform:rotate(-1.5deg)}
.book-tabs{position:absolute;bottom:0;left:0;right:0;display:flex;gap:4px;padding:8px;background:rgba(40,32,20,.14)}
.book-tabs button{flex:1;font-family:'IBM Plex Sans Arabic',sans-serif;font-size:13px;background:rgba(36,31,24,.1);
  border:1px solid rgba(36,31,24,.3);color:#2b241a;padding:.5em;border-radius:3px;cursor:pointer}
.book-tabs button.active{background:#24345C;color:#e8ddc2}
.book-close{position:absolute;top:8px;left:8px;background:rgba(36,31,24,.1);border:1px solid rgba(36,31,24,.3);
  color:#2b241a;border-radius:3px;padding:.4em .8em;cursor:pointer;font-family:'IBM Plex Sans Arabic',sans-serif}
.book-page .stamp{display:inline-block;border:2px solid #7a3b2e;color:#7a3b2e;border-radius:50%;
  width:64px;height:64px;line-height:1.05;text-align:center;font-size:10px;padding:8px;transform:rotate(8deg);
  font-family:'IBM Plex Sans Arabic',sans-serif;opacity:.8}

/* ---------- inventory ---------- */
.inv-wrap{position:relative;z-index:2;width:min(560px,92vw);text-align:center}
.inv-wrap h2{font-family:'Reem Kufi',serif;color:var(--ivory);font-size:clamp(22px,6vw,32px)}
.inv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:14px 0}
.inv-cell{aspect-ratio:1;background:rgba(10,14,20,.45);border:1px solid rgba(201,191,168,.4);
  border-radius:5px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  cursor:pointer;padding:4px}
.inv-cell.sel{border-color:var(--warm);box-shadow:0 0 16px rgba(255,217,160,.35)}
.inv-cell svg{width:34px;height:34px;fill:var(--ivory);opacity:.85}
.inv-cell span{font-size:11px;color:var(--ivory);line-height:1.1;text-align:center}
.inv-cell.empty{opacity:.28;pointer-events:none}
.inv-detail{min-height:3.4em;color:#b9c2cb;font-size:14px;margin-bottom:10px;line-height:1.5}

/* ---------- ending ---------- */
.end-wrap{position:relative;z-index:2;text-align:center;width:min(560px,90vw)}
.end-wrap h2{font-family:'Reem Kufi',serif;font-size:clamp(26px,8vw,52px);margin:0 0 .3em}
.end-wrap p{font-size:clamp(15px,4vw,19px);line-height:1.9;color:#cdd4da}
.end-stats{margin:1.4em 0;color:#8f9aa6;font-size:14px}
#ending .btn{margin-top:1.4em}
#ending.escape{background:radial-gradient(120% 100% at 50% 60%,rgba(184,154,148,.35),rgba(6,8,12,.95))}
#ending.partial{background:radial-gradient(120% 100% at 50% 60%,rgba(61,90,115,.35),rgba(6,8,12,.95))}
#ending.fail{background:radial-gradient(120% 100% at 50% 60%,rgba(159,176,138,.22),rgba(4,5,7,.97))}

/* landscape tweaks */
@media (orientation:landscape) and (max-height:520px){
  .stick{width:112px;height:112px}
  .run-btn{width:52px;height:52px;left:calc(env(safe-area-inset-left,0px) + 144px)}
  .ctx{width:64px;height:64px}
  .top-btn{width:42px;height:42px}
  .menu-inner{padding:2vh 0}
  .title{font-size:clamp(26px,6vw,44px)}
}