:root{
  color-scheme:dark;
  --bg:#0B1426; --bar:#0F1C33; --raise:#172846; --line:rgba(201,162,39,.20);
  --gold:#C9A227; --gold-hi:#E3C766; --ink:#E8ECF4; --muted:#8E9BB5; --teal:#2BB3B1; --red:#E0524B;
  --ui:"Kanit","Sarabun",system-ui,sans-serif; --body:"Sarabun","Kanit",system-ui,sans-serif;
}
[hidden]{display:none!important}
html{box-sizing:border-box;height:100%;background:var(--bg)}
*,*::before,*::after{box-sizing:inherit}
body{height:100%;margin:0;overflow:hidden;background:var(--bg);color:var(--ink);font:15px/1.5 var(--body);-webkit-tap-highlight-color:transparent;overscroll-behavior:none}
.app{height:100%;display:flex;flex-direction:column}
.vh{position:absolute;width:1px;height:1px;opacity:0;overflow:hidden;clip:rect(0 0 0 0)}

.bar{display:flex;align-items:center;gap:6px;padding-inline:12px;background:var(--bar);flex:none}
.top{height:54px;border-bottom:1px solid var(--line)}
.bottom{height:58px;border-top:1px solid var(--line)}
.brand{display:flex;flex-direction:column;min-width:0;flex:1;line-height:1.15}
.mark{font:600 18px/1.1 var(--ui);color:var(--gold);letter-spacing:.01em}
.fname{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tools{display:flex;align-items:center;gap:2px}
.ib{appearance:none;border:0;background:transparent;color:var(--ink);width:40px;height:40px;border-radius:10px;display:grid;place-items:center;cursor:pointer;touch-action:manipulation;flex:none}
.ib:hover{background:var(--raise)}
.ib:active{transform:scale(.94)}
.ib svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.ib[aria-pressed="true"]{color:var(--gold)}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
.open{display:flex;align-items:center;gap:6px;margin-left:6px;height:38px;padding-inline:14px;border-radius:19px;background:var(--gold);color:#16213A;font:500 14px var(--ui);cursor:pointer;white-space:nowrap;touch-action:manipulation}
a.ib{color:var(--ink);text-decoration:none}
.open:hover{background:var(--gold-hi)}
.open svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
@media (max-width:420px){.open span{display:none}.open{padding-inline:10px}}

.seek{flex:1;display:flex;align-items:center;gap:10px;min-width:0}
.plabel{font:500 13px var(--ui);color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap;min-width:64px;text-align:right}
input[type=range]{flex:1;min-width:0;accent-color:var(--gold);height:28px;background:transparent}

.stage{flex:1;position:relative;min-height:0;background:radial-gradient(ellipse at 50% 45%,#1B2D50 0%,#0F1C33 55%,var(--bg) 100%)}
#host{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;touch-action:none;user-select:none;-webkit-user-select:none}
.book{position:relative;flex:none}
.book .stf__parent{width:100%!important;height:100%!important}
.book .stf__wrapper{height:100%!important;padding-bottom:0!important}
.stf__parent{position:relative;display:block;box-sizing:border-box;transform:translateZ(0)}
.stf__wrapper{position:relative;width:100%;box-sizing:border-box}
.stf__parent canvas{position:absolute;width:100%;height:100%;left:0;top:0}
.stf__block{position:absolute;width:100%;height:100%;box-sizing:border-box;perspective:2000px}
.stf__item{display:none;position:absolute;transform-style:preserve-3d}
.stf__outerShadow,.stf__innerShadow,.stf__hardShadow,.stf__hardInnerShadow{position:absolute;left:0;top:0}
.page{background:#fff;overflow:hidden}
.page.--left::before,.page.--right::before{content:"";position:absolute;top:0;bottom:0;width:9%;z-index:2;pointer-events:none}
.page.--left::before{right:0;background:linear-gradient(to left,rgba(0,0,0,.16),transparent)}
.page.--right::before{left:0;background:linear-gradient(to right,rgba(0,0,0,.16),transparent)}
.page img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;display:block;pointer-events:none;-webkit-user-drag:none}
.page:not(.ready)::after,.sitem:not(.ready)::after{content:"";position:absolute;left:50%;top:50%;width:26px;height:26px;margin:-13px;border-radius:50%;border:3px solid #d9dde6;border-top-color:var(--gold);animation:spin .9s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

#scroll{position:absolute;inset:0;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:16px 16px 40px;display:flex;flex-direction:column;align-items:center;gap:14px;touch-action:pan-y}
.sitem{position:relative;width:100%;max-width:900px;background:#fff;box-shadow:0 6px 24px rgba(0,0,0,.35);flex:none}
.sitem img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}
.sitem .no{position:absolute;right:8px;bottom:8px;font:500 11px var(--ui);background:rgba(11,20,38,.75);color:var(--ink);padding:2px 8px;border-radius:9px}

body.immersive .top,body.immersive .bottom{display:none}

/* sheets */
.sheet{position:fixed;inset:0;z-index:30;background:rgba(5,10,20,.6);display:flex;align-items:flex-end;justify-content:center}
.sheet>.panel{width:100%;max-width:760px;max-height:82%;background:var(--bar);border:1px solid var(--line);border-bottom:0;border-radius:18px 18px 0 0;display:flex;flex-direction:column;padding-bottom:env(safe-area-inset-bottom,0px)}
.phead{display:flex;align-items:center;gap:8px;padding:12px 12px 10px 18px;border-bottom:1px solid var(--line)}
.phead h2{margin:0;flex:1;font:500 17px var(--ui);color:var(--gold)}
.pbody{overflow-y:auto;padding:14px 16px 20px;touch-action:pan-y}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(104px,1fr));gap:14px}
.th{appearance:none;border:0;padding:0;background:none;color:var(--muted);cursor:pointer;display:flex;flex-direction:column;gap:6px;font:500 12px var(--ui)}
.th .pic{position:relative;width:100%;background:#fff;border-radius:3px;overflow:hidden;outline:2px solid transparent;outline-offset:2px}
.th img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}
.th.on{color:var(--gold)}.th.on .pic{outline-color:var(--gold)}
.sform{display:flex;gap:8px}
.sform input{flex:1;min-width:0;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--bg);color:var(--ink);padding-inline:14px;font:16px var(--body)}
.sform button{height:44px;padding-inline:18px;border:0;border-radius:12px;background:var(--gold);color:#16213A;font:500 15px var(--ui);cursor:pointer}
.smeta{margin:12px 2px 6px;font-size:13px;color:var(--muted)}
.res{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.res button{width:100%;text-align:left;appearance:none;border:0;background:none;color:var(--ink);padding:10px 8px;border-radius:10px;cursor:pointer;display:flex;gap:12px;font:14px/1.5 var(--body)}
.res button:hover{background:var(--raise)}
.res .pn{font:500 12px var(--ui);color:var(--gold);min-width:44px;padding-top:2px}
.res mark{background:rgba(201,162,39,.3);color:var(--gold-hi);border-radius:3px;padding-inline:2px}

/* zoom */
#zoom{position:fixed;inset:0;z-index:40;background:#060B16;display:flex;flex-direction:column}
.zbar{display:flex;align-items:center;gap:6px;padding:8px 10px;padding-top:calc(8px + env(safe-area-inset-top,0px));background:rgba(15,28,51,.92)}
.zbar .zt{flex:1;font:500 14px var(--ui);color:var(--muted);font-variant-numeric:tabular-nums}
.zbar .zt b{color:var(--gold);font-weight:500}
#zstage{flex:1;position:relative;overflow:hidden;touch-action:none;cursor:grab}
#zwrap{position:absolute;left:0;top:0;transform-origin:0 0;background:#fff;box-shadow:0 10px 40px rgba(0,0,0,.6)}
#zwrap.anim{transition:transform .28s cubic-bezier(.2,.7,.2,1)}
#zwrap img,#zwrap canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.zbot{display:flex;align-items:center;justify-content:center;gap:10px;padding:8px;padding-bottom:calc(8px + env(safe-area-inset-bottom,0px));background:rgba(15,28,51,.92)}
.zpct{font:500 13px var(--ui);color:var(--muted);min-width:52px;text-align:center;font-variant-numeric:tabular-nums}
.zhq{position:absolute;right:12px;top:12px;font:500 11px var(--ui);color:var(--teal);background:rgba(6,11,22,.8);padding:3px 9px;border-radius:9px;pointer-events:none}

/* overlays */
#busy,#drop{position:fixed;inset:0;z-index:50;display:grid;place-items:center;background:rgba(6,11,22,.82)}
.busybox{display:flex;flex-direction:column;align-items:center;gap:14px;font:500 15px var(--ui);color:var(--ink)}
.bar-p{width:220px;height:4px;border-radius:2px;background:var(--raise);overflow:hidden}
.bar-p i{display:block;height:100%;width:0;background:var(--gold);transition:width .2s}
#drop .dz{border:2px dashed var(--gold);border-radius:22px;padding:40px 36px;font:500 18px var(--ui);color:var(--gold);text-align:center}
#toast{position:fixed;left:50%;bottom:calc(76px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);z-index:60;max-width:calc(100% - 32px);background:rgba(23,40,70,.97);border:1px solid var(--line);color:var(--ink);padding:10px 16px;border-radius:14px;font:14px/1.45 var(--body);box-shadow:0 8px 28px rgba(0,0,0,.4);text-align:center;transition:opacity .3s}
#toast.off{opacity:0;pointer-events:none}
@media (prefers-reduced-motion:reduce){#zwrap.anim{transition:none}.page::after,.sitem::after{animation:none}}