/* বই পড়া: পিডিএফ ও লেখা দুই রূপ */
:root{--teal:#123f48;--teal-d:#0b2a30;--gold:#d4b061;--ink:#f1e8d0;--bg:#e8e2d4;--paper:#fffdf7}
*{box-sizing:border-box}
html,body{margin:0;height:100%;overflow:hidden;background:var(--bg);font:400 15px/1.4 'Hind Siliguri',system-ui,sans-serif}
.l-ar body{font-family:'Noto Naskh Arabic','Hind Siliguri',system-ui,sans-serif}
.rbar{position:fixed;inset:0 0 auto 0;z-index:20;display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:7px 12px;min-height:54px;background:var(--teal);color:var(--ink);border-bottom:2px solid var(--gold);box-shadow:0 2px 10px rgba(0,0,0,.18)}
.rbar button,.rbar select,.rbar input,.rb-back,.rb-btn{font:inherit;color:var(--ink);background:rgba(255,255,255,.07);border:1px solid rgba(212,176,97,.35);border-radius:8px;height:36px}
.rbar button,.rb-btn{min-width:36px;padding:0 9px;cursor:pointer;font-size:17px;line-height:1;display:inline-flex;align-items:center;justify-content:center;text-decoration:none}
.rb-btn.off{opacity:.35;cursor:default}
.rbar button:hover:not(:disabled),.rb-back:hover,a.rb-btn:hover{background:rgba(212,176,97,.22);border-color:var(--gold)}
.rbar button:disabled{opacity:.35;cursor:default}
.rbar select{padding:0 6px;cursor:pointer;max-width:130px}
.rbar select option{color:#111;background:#fff}
.rb-back{display:inline-flex;align-items:center;justify-content:center;min-width:38px;text-decoration:none;font-size:19px}
.rb-title{flex:1 1 160px;min-width:0;font-weight:600;font-size:16px;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rb-title[dir=rtl]{font-family:'Amiri','Noto Naskh Arabic',serif;font-size:19px}
.rb-group{display:flex;align-items:center;gap:5px}
.rb-pages input{width:62px;text-align:center;padding:0 4px}
.rb-of{opacity:.85;white-space:nowrap}
.rb-find input{width:220px;padding:0 10px;background:#fff;color:#1c2427;border-color:transparent}
.rb-find input::placeholder{color:#7a827d}
.rb-msg{min-width:52px;font-size:13px;opacity:.9;white-space:nowrap;text-align:center}
.rb-msg.bad{color:#ffb4a8;opacity:1}
.rb-switch{display:inline-flex;border:1px solid var(--gold);border-radius:9px;overflow:hidden;height:36px}
.rb-switch a,.rb-switch span{display:inline-flex;align-items:center;padding:0 12px;text-decoration:none;color:var(--ink);font-size:14.5px;white-space:nowrap}
.rb-switch .on{background:var(--gold);color:var(--teal);font-weight:600}
.rb-switch a:hover{background:rgba(212,176,97,.22)}
.rb-only-sm{display:none}
#viewerContainer{position:absolute;inset:56px 0 0 0;overflow:auto;outline:none}
.pdfViewer .page{box-shadow:0 2px 14px rgba(0,0,0,.18);border-radius:2px}
.rloading{position:fixed;inset:56px 0 0 0;display:flex;align-items:center;justify-content:center;gap:12px;color:var(--teal);font-size:17px;background:var(--bg);flex-wrap:wrap;padding:20px;text-align:center}
.spin{width:22px;height:22px;border:3px solid rgba(18,63,72,.2);border-top-color:var(--teal);border-radius:50%;animation:sp 1s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.textLayer .highlight{background-color:rgba(255,196,0,.45)}
.textLayer .highlight.selected{background-color:rgba(0,170,120,.55)}

/* লেখা আকারে পড়া */
.tmode,.tmode body{overflow:auto;height:auto}
.tview{padding:76px 14px 40px}
.tpage{max-width:820px;margin:0 auto;background:var(--paper);border:1px solid #ddd3bd;border-radius:6px;box-shadow:0 6px 30px -12px rgba(0,0,0,.25);padding:46px clamp(20px,6vw,64px) 30px;font:400 19px/2 'Hind Siliguri',serif;color:#1c2427}
.tpage[dir=rtl]{font:400 25px/2.05 'Amiri','Noto Naskh Arabic',serif;text-align:justify}
.tpage[lang=ur]{font-family:'Noto Nastaliq Urdu','Noto Naskh Arabic',serif}
.tpage p{margin:0 0 .9em}
.tpage mark{background:#fde7a4;color:inherit;border-radius:3px;padding:0 2px}
.tnone{color:#6c787c;text-align:center}
.tfoot{display:flex;flex-direction:column;align-items:center;gap:6px;margin-top:26px;padding-top:14px;border-top:1px solid #e6dcc6;font:400 14px 'Hind Siliguri',sans-serif;color:#7b8589;text-align:center}
.tnote{font-size:12.5px;opacity:.85}
.tnav{max-width:820px;margin:18px auto 0;display:flex;justify-content:space-between;gap:10px}
.tnav .btn{background:var(--teal);color:#fff;text-decoration:none;padding:9px 18px;border-radius:9px;font-size:15px}
.tnav .btn:hover{background:#1d5b66}
@media (max-width:900px){
  .rb-find{display:none;order:9;flex:1 1 100%}
  .rb-find input{flex:1;width:auto}
  .show-find .rb-find{display:flex}
  .rb-only-sm{display:inline-flex}
  .rb-zoom select{display:none}
  .tmode .rb-find{display:none}
}
@media (max-width:600px){
  .rbar{gap:6px;padding:6px 8px}
  .rb-title{flex-basis:100%;order:-1;font-size:15px}
  .rb-back{order:-2}
  .rb-zoom{display:none}
  #viewerContainer,.rloading{top:96px}
  .tview{padding-top:110px}
  .tpage[dir=rtl]{font-size:22px}
}