/* ---------- fonts (tự nhúng, có bộ dấu tiếng Việt) ---------- */
@font-face{font-family:"Be Vietnam Pro";font-weight:400;font-display:swap;src:url(/fonts/bvp-vietnamese-400.woff2) format("woff2");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}
@font-face{font-family:"Be Vietnam Pro";font-weight:400;font-display:swap;src:url(/fonts/bvp-latin-400.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Be Vietnam Pro";font-weight:500;font-display:swap;src:url(/fonts/bvp-vietnamese-500.woff2) format("woff2");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}
@font-face{font-family:"Be Vietnam Pro";font-weight:500;font-display:swap;src:url(/fonts/bvp-latin-500.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Be Vietnam Pro";font-weight:600;font-display:swap;src:url(/fonts/bvp-vietnamese-600.woff2) format("woff2");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}
@font-face{font-family:"Be Vietnam Pro";font-weight:600;font-display:swap;src:url(/fonts/bvp-latin-600.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Be Vietnam Pro";font-weight:800;font-display:swap;src:url(/fonts/bvp-vietnamese-800.woff2) format("woff2");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}
@font-face{font-family:"Be Vietnam Pro";font-weight:800;font-display:swap;src:url(/fonts/bvp-latin-800.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Pangolin";font-weight:400;font-display:swap;src:url(/fonts/pangolin-vietnamese.woff2) format("woff2");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}
@font-face{font-family:"Pangolin";font-weight:400;font-display:swap;src:url(/fonts/pangolin-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

/* ---------- tokens ---------- */
:root{
  --ink:#161827;      /* nền: mực xanh đêm */
  --ink-2:#1E2134;    /* bề mặt */
  --ink-3:#2A2E46;    /* nổi / viền */
  --line:#353A5C;
  --paper:#ECEBF5;    /* chữ chính */
  --muted:#9A9CBF;
  --faint:#686B92;
  --marker:#FFCB3D;   /* vàng bút dạ */
  --marker-deep:#E9A900;
  --on-marker:#241B00;
  --ok:#62D6A6;
  --bad:#FF7A85;
  --ui:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --comic:"Pangolin","Be Vietnam Pro",system-ui,sans-serif;
  --bubble-font:var(--comic);
  --sat:env(safe-area-inset-top,0px);
  --sab:env(safe-area-inset-bottom,0px);
  color-scheme:dark;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;background:var(--ink);color:var(--paper);font:400 15px/1.5 var(--ui);-webkit-text-size-adjust:100%;text-rendering:optimizeLegibility}
body{min-height:100dvh;overscroll-behavior-y:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none;padding:0}
:focus-visible{outline:2px solid var(--marker);outline-offset:2px}
a{color:var(--marker);text-underline-offset:3px}
[hidden]{display:none!important}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}

/* ---------- controls ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 18px;border-radius:14px;
  background:var(--ink-3);color:var(--paper);font-weight:600;white-space:nowrap;transition:transform .08s}
.btn:active{transform:scale(.97)}
.btn.primary{background:var(--marker);color:var(--on-marker);font-weight:800}
.btn.quiet{background:transparent;color:var(--muted);padding:0 10px}
.btn.danger{background:transparent;color:var(--bad);padding:0 10px}
.btn.block{width:100%}
.btn:disabled{opacity:.45}
.icon-btn{width:44px;height:44px;display:grid;place-items:center;border-radius:50%;color:var(--paper)}
.icon-btn:active{background:rgba(255,255,255,.08)}
.icon-btn:disabled{opacity:.3}
.icon-btn svg{width:24px;height:24px}
.pill{display:inline-flex;align-items:center;height:32px;padding:0 13px;border-radius:999px;background:var(--ink-3);font-size:13px;font-weight:600;white-space:nowrap}
.pill.marker{background:transparent;color:var(--marker);box-shadow:inset 0 0 0 1.5px var(--marker)}
input,select,textarea{width:100%;background:var(--ink);border:1.5px solid var(--line);border-radius:14px;padding:11px 13px;outline:none;font-size:16px}
input:focus,select:focus,textarea:focus{border-color:var(--marker)}
textarea{resize:vertical;min-height:84px;line-height:1.45}
::placeholder{color:var(--faint)}

/* ---------- thư viện ---------- */
#lib{padding:calc(14px + var(--sat)) 18px calc(40px + var(--sab));max-width:720px;margin:0 auto}
.lib-top{display:flex;align-items:center;justify-content:space-between;height:52px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:22px;letter-spacing:-.02em}
.brand svg{width:34px;height:34px}
.hero{position:relative;margin:14px 0 30px;padding:22px 18px 18px;border-radius:24px;background:var(--ink-2);overflow:hidden;isolation:isolate}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;
  background-image:radial-gradient(rgba(255,203,61,.22) 1.3px,transparent 1.8px);background-size:10px 10px;
  -webkit-mask-image:linear-gradient(200deg,#000 0%,rgba(0,0,0,.35) 38%,transparent 62%);mask-image:linear-gradient(200deg,#000 0%,rgba(0,0,0,.35) 38%,transparent 62%)}
.hero h1{margin:0 0 4px;font-size:30px;line-height:1.12;letter-spacing:-.025em;font-weight:800;max-width:12ch}
.hero p{margin:0 0 18px;color:var(--muted);font-size:14px;max-width:34ch}
.field-row{display:flex;gap:8px;margin-bottom:10px}
.field-row input{flex:1;min-width:0;height:50px;background:var(--ink);border-color:var(--ink-3)}
.field-row .btn{height:50px}
.hero .btn.block{height:52px;font-size:16px}
.hero .alt{display:flex;justify-content:center;margin-top:8px}

.block{margin-top:28px}
.block h2{font-size:17px;font-weight:800;margin:0 0 12px;letter-spacing:-.01em}
.empty{color:var(--muted);font-size:14px;padding:14px 16px;border:1.5px dashed var(--line);border-radius:16px}

.cont{display:flex;flex-direction:column}
.cont-row{display:flex;align-items:center;gap:14px;padding:10px 0;border-bottom:1px solid var(--ink-3)}
.cont-row:last-child{border-bottom:0}
.cont-open{display:flex;align-items:center;gap:14px;flex:1;min-width:0;text-align:left}
.cover{flex:none;width:54px;aspect-ratio:3/4;border-radius:9px;object-fit:cover;object-position:top;background:var(--ink-3)}
.cont-text{min-width:0}
.cont-text b{display:block;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cont-text small{display:block;color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cont-text .site{color:var(--faint);margin-left:10px}
.no-content .r-bar,.no-content #origBtn{display:none}

.shelf{display:grid;grid-template-columns:repeat(auto-fill,minmax(102px,1fr));gap:18px 12px}
.book{text-align:left;min-width:0}
.book .cover,.book .ph{width:100%;border-radius:12px}
.book span{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-top:7px;font-size:13px;font-weight:600;line-height:1.3}
.ph{display:grid;place-items:center;aspect-ratio:3/4;background:var(--ink-3);font:400 34px/1 var(--comic);color:var(--marker);position:relative;overflow:hidden}
.ph::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.07) 1.2px,transparent 1.6px);background-size:8px 8px}
.cont-row .ph{width:54px;font-size:20px;border-radius:9px;flex:none}

.setup{margin:10px 0 0;padding:16px;border-radius:18px;background:#2B2412;box-shadow:inset 0 0 0 1.5px rgba(255,203,61,.35)}
.setup b{display:block;margin-bottom:4px}
.setup p{margin:0 0 12px;color:#D9CDA6;font-size:14px}
.setup.bad{background:#2E1720;box-shadow:inset 0 0 0 1.5px rgba(255,122,133,.45)}
.setup.bad p{color:#E9C3C8;margin:0}

/* ---------- trình đọc ---------- */
#reader{min-height:100dvh;background:#0E0F18}
.r-top{position:fixed;top:0;left:0;right:0;z-index:20;display:flex;align-items:center;gap:4px;padding:calc(6px + var(--sat)) 6px 6px;
  background:rgba(22,24,39,.86);backdrop-filter:blur(14px) saturate(1.3);-webkit-backdrop-filter:blur(14px) saturate(1.3);transition:transform .25s ease}
.r-title{flex:1;min-width:0;text-align:left;padding:2px 6px;display:flex;flex-direction:column}
.r-title b{font-weight:600;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.r-title span{font-size:12.5px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.r-title.busy b{color:var(--muted)}
.r-prog{position:absolute;left:0;right:0;bottom:0;height:2px;background:transparent}
.r-prog i{display:block;height:100%;width:0;background:var(--marker)}
.chrome-off .r-top{transform:translateY(-105%)}
.chrome-off .r-bar{transform:translate(-50%,calc(100% + 30px))}

.r-bar{position:fixed;left:50%;bottom:calc(14px + var(--sab));transform:translateX(-50%);z-index:20;display:flex;align-items:center;gap:6px;
  padding:6px;border-radius:30px;background:rgba(30,33,52,.9);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:0 10px 30px rgba(0,0,0,.45);transition:transform .25s ease}
/* nút Dịch hình bóng thoại — điểm nhấn của app */
.fab{position:relative;height:48px;min-width:150px;padding:0 20px;margin:0 4px 6px;border-radius:24px;color:var(--on-marker);font-weight:800;font-size:15px;white-space:nowrap;
  background:linear-gradient(90deg,var(--marker-deep) var(--p,0%),var(--marker) var(--p,0%));transition:background .3s}
.fab::after{content:"";position:absolute;left:20px;bottom:-8px;width:16px;height:12px;background:var(--marker);clip-path:polygon(0 0,100% 0,8% 100%)}
.fab.running::after{background:var(--marker-deep)}
.fab:active{transform:scale(.97)}

#pages{max-width:820px;margin:0 auto;padding-top:calc(58px + var(--sat))}
.pg{position:relative;margin:0;line-height:0;min-height:160px;background:#0E0F18}
.pg img{display:block;width:100%;height:auto;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
.pg .ov{position:absolute;inset:0;pointer-events:none}
.show-orig .ov,.disp-below .ov{display:none}
.pg-btn{position:absolute;top:10px;right:10px;z-index:3;height:30px;padding:0 12px;border-radius:15px;font-size:12.5px;font-weight:600;line-height:30px;
  background:rgba(22,24,39,.72);color:var(--paper);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.pg-btn.done{background:rgba(22,24,39,.45);color:var(--ok)}
.pg-btn.err{background:rgba(120,30,40,.85);color:#fff}
.pg.busy img{filter:brightness(.82)}
.pg.busy::after{content:"";position:absolute;left:0;right:0;top:0;height:2px;z-index:2;pointer-events:none;background:var(--marker);
  box-shadow:0 0 12px 2px rgba(255,203,61,.55);animation:scan 1.8s ease-in-out infinite alternate}
@keyframes scan{from{top:0}to{top:calc(100% - 2px)}}
.pg .imgerr{line-height:1.5;padding:40px 18px;text-align:center;color:var(--muted);font-size:14px}

.bb{position:absolute;display:flex;align-items:center;justify-content:center;text-align:center;pointer-events:auto;overflow:hidden;
  background:#fff;color:#141414;border-radius:50%;padding:2px 4px;line-height:1.12;font-family:var(--bubble-font);font-weight:400;
  box-shadow:0 0 0 1.5px rgba(0,0,0,.12)}
.font-clean .bb{font-weight:600}
.bb span{display:block;max-width:100%;overflow-wrap:anywhere}
.bb.k-thought{font-style:italic}
.bb.k-narration{background:#FFF7DA;border-radius:4px}
.bb.k-sign{background:#EFEFEF;border-radius:6px}
.bb.k-sfx{background:rgba(14,15,24,.6);color:#FFE38A;border-radius:10px;font-weight:600;letter-spacing:.02em;box-shadow:none}
.bb.grow{overflow:visible;height:auto!important;z-index:2}

.lines{margin:0;padding:12px 18px 14px 40px;background:var(--ink-2);font-size:15px;line-height:1.5}
.lines li{margin:5px 0}
.lines b{color:var(--marker);font-weight:600}
.lines small{display:block;color:var(--faint);font-size:12.5px}
.disp-overlay .lines,.show-orig .lines{display:none}

#textPages{max-width:680px;margin:0 auto;padding:calc(70px + var(--sat)) 20px 0}
.para{margin:0 0 16px;font-size:17.5px;line-height:1.75}
.para .tl{color:#F6EFD9}
.para.has-tl .o{color:var(--faint);font-size:14px;line-height:1.55;margin-bottom:4px}
.show-orig .para .tl{display:none}
.show-orig .para .o{color:var(--paper);font-size:17.5px}
.reader-head{max-width:680px;margin:0 auto;padding:0 20px}

.chap-end{max-width:820px;margin:0 auto;padding:36px 18px calc(120px + var(--sab));text-align:center;color:var(--muted)}
.chap-end .btn{margin-top:14px;min-width:220px;height:52px;font-size:16px}
.ask{max-width:820px;margin:calc(66px + var(--sat)) auto 0;padding:0 14px}
.ask:not([hidden]) + #pages{padding-top:12px}
.card{background:var(--ink-2);border-radius:20px;padding:16px}
.card b{display:block;margin-bottom:4px}
.card p{margin:0 0 12px;color:var(--muted);font-size:14px}
.errcard{max-width:560px;margin:calc(90px + var(--sat)) auto 0;padding:0 18px}
.errcard .card{padding:20px}
.errcard .row{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.skel{height:70vh;margin:calc(70px + var(--sat)) 12px 0;border-radius:16px;
  background:linear-gradient(100deg,#171a2a 40%,#20243a 50%,#171a2a 60%);background-size:200% 100%;animation:sk 1.2s linear infinite}
@keyframes sk{to{background-position:-200% 0}}

/* ---------- sheet ---------- */
#sheetWrap{position:fixed;inset:0;z-index:50;background:rgba(6,7,14,.62);display:flex;align-items:flex-end;justify-content:center}
#sheet{width:min(640px,100%);max-height:90dvh;overflow:auto;overscroll-behavior:contain;background:var(--ink-2);border-radius:26px 26px 0 0;
  padding:8px 18px calc(24px + var(--sab));animation:rise .22s cubic-bezier(.2,.8,.2,1)}
#sheet::before{content:"";display:block;width:40px;height:5px;border-radius:3px;background:var(--line);margin:4px auto 10px}
@keyframes rise{from{transform:translateY(40px);opacity:.3}to{transform:none;opacity:1}}
@media (min-width:700px){#sheetWrap{align-items:center}#sheet{border-radius:26px}}
.sh-head{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.sh-head h2{flex:1;margin:0;font-size:20px;font-weight:800;letter-spacing:-.015em}
.sh-sub{color:var(--muted);font-size:14px;margin:0 0 10px}
.f{margin:16px 0}
.f > label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:6px}
.f .hint{font-size:12.5px;color:var(--faint);margin-top:6px}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.seg{display:flex;background:var(--ink);border-radius:14px;padding:4px;gap:4px}
.seg button{flex:1;height:38px;border-radius:10px;font-size:14px;font-weight:600;color:var(--muted)}
.seg button.on{background:var(--ink-3);color:var(--paper)}
.sw{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px 0;border-top:1px solid var(--ink-3)}
.sw span small{display:block;color:var(--faint);font-size:12.5px}
.sw input{appearance:none;-webkit-appearance:none;flex:none;width:48px;height:28px;border-radius:14px;background:var(--line);position:relative;border:0;padding:0;transition:background .2s}
.sw input::after{content:"";position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;background:#fff;transition:transform .2s}
.sw input:checked{background:var(--marker)}
.sw input:checked::after{transform:translateX(20px)}
.group{margin-top:22px}
.group > h3{font-size:15px;font-weight:800;margin:0 0 4px}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0 2px}
.tag{font-size:12.5px;padding:4px 10px;border-radius:999px;background:var(--ink-3);color:var(--muted)}
.tag.good{color:var(--ok)}
.tag.warn{color:var(--marker)}
.gloss{font-size:14px}
.pop-tl{font:400 22px/1.35 var(--bubble-font);margin:6px 0 12px;white-space:pre-wrap}
.pop-src{color:var(--muted);white-space:pre-wrap;font-size:15px}
.steps{margin:8px 0 0;padding-left:20px;color:var(--muted);font-size:14px}
.steps li{margin:4px 0}
.ok-text{color:var(--ok)}
.bad-text{color:var(--bad)}

#toast{position:fixed;left:50%;bottom:calc(92px + var(--sab));transform:translate(-50%,10px);z-index:60;max-width:min(520px,92vw);
  padding:11px 16px;border-radius:14px;background:#2E3352;color:var(--paper);font-size:14px;box-shadow:0 10px 30px rgba(0,0,0,.4);
  opacity:0;pointer-events:none;transition:opacity .2s,transform .2s}
#toast.on{opacity:1;transform:translate(-50%,0)}
#toast.err{background:#4A1F2A}