:root{--bg:#fff;--panel:#f7f7f6;--card:#fff;--ink:#0c0c0c;--mute:#6f6f6b;--line:#e7e7e4;--line2:#d6d6d2;--btn:#0c0c0c;--btn-ink:#fff;--hover:#f0f0ee;--ok:#16794c;--err:#c0362c;--bar:#0c0c0c;--shadow:0 1px 2px rgba(0,0,0,.04),0 8px 24px -12px rgba(0,0,0,.10)}
@media (prefers-color-scheme:dark){:root{--bg:#0a0a0a;--panel:#141414;--card:#141414;--ink:#f4f4f2;--mute:#8d8d88;--line:#262626;--line2:#383838;--btn:#f4f4f2;--btn-ink:#0a0a0a;--hover:#1e1e1e;--ok:#4cc38a;--err:#f08a82;--bar:#f4f4f2;--shadow:none}}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;letter-spacing:-.005em;-webkit-font-smoothing:antialiased;padding:env(safe-area-inset-top,0) env(safe-area-inset-right,0) calc(env(safe-area-inset-bottom,0) + 0px) env(safe-area-inset-left,0)}
.center-screen{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:20px;text-align:center}
.login{max-width:420px;width:100%;padding:32px 26px;display:flex;flex-direction:column;align-items:center;gap:6px}
.login h1{margin:8px 0 0}
.login .lead{margin:4px 0 16px}
.row-center{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:8px}
.wide{width:100%;justify-content:center;padding:12px 16px}
.err{color:var(--err);font-size:.88rem;margin:8px 0 0;min-height:1.2em}
.mute{color:var(--mute)}.small{font-size:.84rem}
.top{display:flex;align-items:center;gap:14px;max-width:1120px;margin:0 auto;padding:14px 20px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:1rem}
.orb{width:22px;height:22px;border-radius:50%;background:conic-gradient(from 210deg,#8ec5ff,#c6a6ff,#ffb4a2,#ffe29a,#8ec5ff);box-shadow:inset 0 0 0 1px rgba(0,0,0,.08);flex:none}
.orb.big{width:52px;height:52px}
#nav{display:flex;gap:4px;margin-left:8px}
.tab{border:0;border-radius:999px;padding:7px 14px;color:var(--mute)}
.tab.on{background:var(--hover);color:var(--ink)}
.who{margin-left:auto;display:flex;gap:8px;align-items:center}
.pill{font-size:.76rem;color:var(--mute);border:1px solid var(--line);border-radius:999px;padding:3px 10px;max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
@media (max-width:640px){.who{margin-left:0;width:100%;justify-content:space-between}#nav{margin-left:0;order:3;width:100%}.tab{flex:1;text-align:center}}
.wrap{max-width:1120px;margin:0 auto;padding:8px 20px 120px;display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:20px;align-items:start}
.wrap1{max-width:860px;margin:0 auto;padding:8px 20px 120px}
@media (max-width:900px){.wrap{grid-template-columns:1fr;padding:4px 14px 120px}.wrap1{padding:4px 14px 120px}.top{padding:12px 14px}}
h1{font-size:1.6rem;line-height:1.2;font-weight:600;letter-spacing:-.02em;margin:6px 0 4px}
h2{font-size:.95rem;font-weight:600;margin:0 0 12px}
.h2{margin:26px 0 10px}
.lead{color:var(--mute);margin:0 0 16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}
.pad{padding:18px}
.editor{overflow:hidden}
textarea{display:block;width:100%;min-height:300px;border:0;background:transparent;color:var(--ink);font:inherit;font-size:1.02rem;line-height:1.65;padding:20px 20px 8px;resize:vertical;outline:none}
textarea::placeholder{color:var(--mute)}
@media (max-width:900px){textarea{min-height:220px}}
.foot-bar{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 14px 14px 20px;flex-wrap:wrap}
#cnt{color:var(--mute);font-size:.84rem}
.acts{display:flex;gap:8px;margin-left:auto}
button{font:inherit;font-weight:500;border-radius:999px;border:1px solid var(--line2);background:transparent;color:var(--ink);padding:9px 16px;cursor:pointer;display:inline-flex;align-items:center;gap:8px;transition:background .12s,opacity .12s}
button:hover:not(:disabled){background:var(--hover)}
button.p{background:var(--btn);color:var(--btn-ink);border-color:var(--btn)}
button.p:hover:not(:disabled){background:var(--btn);opacity:.86}
button.sm{padding:5px 12px;font-size:.84rem}
button.danger{color:var(--err);border-color:var(--err)}
button:disabled{opacity:.4;cursor:not-allowed}
button svg{width:15px;height:15px;flex:none}
.tab,.tab:hover:not(:disabled){border:0}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
.bar{height:3px;background:var(--line);border-radius:3px;overflow:hidden;margin:8px 2px 0;display:none}
.bar i{display:block;height:100%;width:0;background:var(--bar);transition:width .2s}
.res{display:none;margin-top:16px;padding:16px 18px}
.res h2{margin:0 0 12px}
.res .line{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.res select{width:auto;flex:1 1 200px}
.side{padding:18px}
.side h2{margin:0 0 14px}
.fld{margin-bottom:16px}
label,.lab{display:block;font-size:.8rem;font-weight:500;color:var(--mute);margin-bottom:6px}
.chk{display:flex;gap:10px;align-items:flex-start;margin:0 0 14px;cursor:pointer;color:var(--ink)}
.chk input{margin-top:3px;width:16px;height:16px;accent-color:var(--ink);flex:none}
.chk b{font-weight:500;font-size:.88rem;display:block}.chk small{display:block;color:var(--mute);font-size:.76rem;line-height:1.45;margin-top:2px}
.sel{position:relative}
.sel::before{content:"";position:absolute;left:11px;top:50%;width:18px;height:18px;margin-top:-9px;border-radius:50%;background:conic-gradient(from 210deg,#8ec5ff,#c6a6ff,#ffb4a2,#ffe29a,#8ec5ff);pointer-events:none}
.sel select{padding-left:38px}
.sel.plain::before{display:none}.sel.plain select{padding-left:12px}
.sel.narrow{width:150px;flex:none}
select,input[type=text],input[type=email],input[type=search]{width:100%;appearance:none;-webkit-appearance:none;border:1px solid var(--line2);border-radius:12px;background:var(--bg);color:var(--ink);font:inherit;padding:10px 34px 10px 12px;height:44px}
input[type=text],input[type=email],input[type=search]{padding-right:12px}
.sel::after{content:"";position:absolute;right:14px;top:50%;width:7px;height:7px;margin-top:-6px;border-right:1.5px solid var(--mute);border-bottom:1.5px solid var(--mute);transform:rotate(45deg);pointer-events:none}
select:focus,input:focus{outline:2px solid var(--ink);outline-offset:1px}
.rg{display:flex;justify-content:space-between;font-size:.8rem;color:var(--mute);margin-bottom:6px}.rg b{color:var(--ink);font-weight:500}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:4px;border-radius:4px;background:var(--line2);outline:none;margin:10px 0}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--ink);border:3px solid var(--bg);box-shadow:0 0 0 1px var(--line2)}
input[type=range]::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--ink);border:3px solid var(--bg)}
.q{border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:var(--panel);font-size:.84rem}
.q h2{font-size:.8rem;font-weight:500;color:var(--mute);margin:0 0 8px}
.q .ln{margin:8px 0}.q .tr{height:4px;background:var(--line2);border-radius:4px;overflow:hidden;margin-top:6px}
.q .tr i{display:block;height:100%;background:var(--ink)}.q .tr i.hi{background:var(--err)}
.q .rs{color:var(--mute);margin-top:8px;font-size:.78rem}
.q.lock{border-color:var(--err)}.q .lk{color:var(--err);font-weight:500;margin:8px 0 0}
.note{color:var(--mute);font-size:.76rem;margin:16px 4px 0;line-height:1.5}
/* đang đọc chương */
.now{display:flex;align-items:center;gap:10px;margin:2px 0 6px}
.now-t{flex:1;min-width:0;display:flex;flex-direction:column;line-height:1.3}
.now-t b{font-size:.78rem;color:var(--mute);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.now-t span{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
/* thư viện */
.sec-h{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.drop{display:flex;flex-direction:column;align-items:center;gap:6px;padding:28px 18px;text-align:center;cursor:pointer;border-style:dashed;border-color:var(--line2);color:var(--ink)}
.drop svg{width:28px;height:28px;color:var(--mute)}.drop span{color:var(--mute);font-size:.84rem}
.drop:hover,.drop.over{background:var(--hover)}
.books{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px;margin-top:16px}
.book{text-align:left;display:block;width:100%;border-radius:16px;padding:16px;background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow)}
.book b{display:block;font-weight:600;margin-bottom:4px;overflow-wrap:anywhere}.book span{color:var(--mute);font-size:.84rem}
.empty{color:var(--mute);text-align:center;padding:24px}
.toc{max-height:260px;overflow:auto;border:1px solid var(--line);border-radius:12px;padding:8px 8px 8px 34px;margin:8px 0 14px;background:var(--panel)}
.toc li{margin:2px 0}.toc em{color:var(--mute);font-style:normal}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.search{margin:14px 0 10px}
.chlist{list-style:none;margin:0;padding:0;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--card)}
.chlist li{display:flex;align-items:center;gap:10px;padding:10px 12px 10px 16px;border-top:1px solid var(--line)}
.chlist li:first-child{border-top:0}
.chlist .t{flex:1;min-width:0;overflow-wrap:anywhere}.chlist .t small{display:block;color:var(--mute);font-size:.76rem}
.chlist li.cur{background:var(--hover)}
/* quản trị */
.ulist{display:flex;flex-direction:column;gap:8px}
.urow{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:var(--card)}
.urow .u{flex:1 1 220px;min-width:0;overflow-wrap:anywhere}.urow .u small{display:block;color:var(--mute);font-size:.76rem}
.urow select{height:36px;padding:4px 30px 4px 10px;width:auto}
.badge{font-size:.72rem;border:1px solid var(--line2);border-radius:999px;padding:1px 8px;color:var(--mute)}
.badge.off{color:var(--err);border-color:var(--err)}
#addUser input{flex:1 1 220px}
#adMsg{min-height:1.4em;margin:8px 2px 0;color:var(--mute)}#adMsg.err{color:var(--err)}
/* thanh trạng thái */
.dock{position:fixed;left:0;right:0;bottom:0;z-index:20;padding:10px 14px calc(10px + env(safe-area-inset-bottom,0));background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-top:1px solid var(--line)}
.dock-in{max-width:1120px;margin:0 auto;display:flex;align-items:center;gap:12px}
.dock-t{flex:1;min-width:0}
#st{display:block;font-size:.88rem;color:var(--mute);overflow-wrap:anywhere}#st.err{color:var(--err)}
.toast{position:fixed;left:50%;bottom:84px;transform:translateX(-50%);background:var(--btn);color:var(--btn-ink);padding:9px 16px;border-radius:999px;font-size:.88rem;z-index:30;max-width:90vw}

/* ===== Điều hướng + giao diện điện thoại ===== */
.tab{display:inline-flex;align-items:center;gap:6px}
.tab svg{display:none;width:22px;height:22px}
.acct{display:flex;justify-content:space-between;align-items:center;gap:10px;padding-bottom:14px;margin-bottom:16px;border-bottom:1px solid var(--line)}
.acct b{display:block;overflow-wrap:anywhere}.acct small{display:block}
body.v-listen .dock{display:none}
@media (pointer:coarse){button{min-height:40px}button.sm{min-height:36px}}
@media (max-width:700px){
  .top{padding:10px 14px;flex-wrap:nowrap}
  .who{width:auto;margin-left:auto}
  #whoName,#btnOut2{display:none}
  #nav{position:fixed;left:0;right:0;bottom:0;z-index:40;margin:0;width:auto;order:0;gap:0;padding:6px 6px calc(6px + env(safe-area-inset-bottom,0));background:color-mix(in srgb,var(--bg) 94%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-top:1px solid var(--line)}
  .tab{flex:1;flex-direction:column;gap:2px;border-radius:12px;padding:6px 2px;font-size:.68rem;min-height:50px}
  .tab svg{display:block}
  .wrap1{padding-bottom:calc(140px + env(safe-area-inset-bottom,0))}
  .dock{bottom:calc(68px + env(safe-area-inset-bottom,0));padding-bottom:10px}
  .toast{bottom:150px}
  h1{font-size:1.4rem}
}

/* ===== Nghe Google Doc ===== */
.gd{display:flex;flex-direction:column;gap:6px}
.gd input{margin-bottom:8px}
.grow{flex:1;justify-content:center}
button.p.grow{padding:12px 16px}
.ls-head{display:flex;justify-content:space-between;gap:10px;align-items:flex-start}
.ls-t{min-width:0;flex:1}
.ls-t small{color:var(--mute);display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ls-t h1{font-size:1.25rem;margin:2px 0 10px;overflow-wrap:anywhere}
.ls-act{display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end}
.lstext{padding:12px 10px;max-height:44vh;overflow:auto;font-size:1.05rem;line-height:1.7;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}
.lstext p{margin:0 0 .5em;padding:4px 10px;border-radius:10px;cursor:pointer}
.lstext.dim{color:var(--mute)}.lstext.dim p{cursor:default}
.lstext p.now{background:var(--hover);box-shadow:inset 3px 0 0 var(--ink)}
.secs{margin:12px 0}
.secs summary{cursor:pointer;padding:10px 4px;font-weight:500}
.secs .chlist li{cursor:pointer}
.chlist .st{color:var(--mute);font-size:.8rem;min-width:2.6em;text-align:right}
.player{position:sticky;bottom:0;z-index:15;margin-top:14px;padding:14px 16px calc(14px + env(safe-area-inset-bottom,0));background:var(--card);border:1px solid var(--line);border-radius:22px;box-shadow:0 -6px 30px -12px rgba(0,0,0,.28)}
@media (max-width:700px){.player{bottom:calc(68px + env(safe-area-inset-bottom,0));padding-bottom:14px;margin-left:-6px;margin-right:-6px}}
.pl-st{font-size:.86rem;color:var(--mute);min-height:1.3em;text-align:center}.pl-st.err{color:var(--err)}
.pl-seek{display:flex;align-items:center;gap:10px;margin-top:8px;font-size:.78rem;color:var(--mute);font-variant-numeric:tabular-nums}
.pl-seek input{flex:1;margin:0;min-width:0;height:28px;background:transparent}
.pl-seek input::-webkit-slider-runnable-track{height:4px;border-radius:4px;background:var(--line2)}
.pl-seek input::-moz-range-track{height:4px;border-radius:4px;background:var(--line2)}
.pl-seek input::-webkit-slider-thumb{margin-top:-7px;width:18px;height:18px}
.pl-left{display:flex;justify-content:space-between;margin-top:0}
.pl-tr{display:flex;align-items:center;justify-content:space-between;gap:4px;margin:8px 0 12px}
button.ic{position:relative;width:48px;height:48px;padding:0;justify-content:center;border-radius:50%;border:0;flex:none}
button.ic svg{width:26px;height:26px}
button.ic b{position:absolute;font-size:.56rem;font-weight:700;top:50%;left:50%;transform:translate(-50%,-34%)}
button.ic.big{width:68px;height:68px}
button.ic.big svg{width:32px;height:32px}
#plPlay .i-pause,#plPlay .spin{display:none}
#plPlay[data-state=playing] .i-play,#plPlay[data-state=wait] .i-play{display:none}
#plPlay[data-state=playing] .i-pause{display:block}
#plPlay[data-state=wait] .spin{display:block}
.spin{width:28px;height:28px;border:3px solid currentColor;border-right-color:transparent;border-radius:50%;animation:sp .8s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.pl-rate{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:center}
.pl-rate b{min-width:3.6em;text-align:center;font-variant-numeric:tabular-nums}
button.ic.sm{width:38px;height:38px;border:1px solid var(--line2);font-size:1.2rem;min-height:0}
.chips{display:flex;gap:6px;flex-wrap:wrap;justify-content:center;width:100%}
.chips button{padding:6px 11px;font-size:.8rem}
.chips button.on{background:var(--btn);color:var(--btn-ink);border-color:var(--btn)}

/* tạo âm thanh toàn sách */
.bulk{margin:12px 0}.bulk-row{display:flex;align-items:center;justify-content:space-between;gap:12px}
.bulk-t{min-width:0}.bulk-t b{display:block}.bulk-t small{display:block;color:var(--mute);font-size:.8rem;margin-top:2px;line-height:1.35}.bulk-t small.err{color:var(--err)}
.pbar{height:6px;background:var(--line);border-radius:6px;overflow:hidden;margin-top:10px}
.pbar i{display:block;height:100%;width:0;background:var(--bar);border-radius:6px;transition:width .3s}
.bulk.run .pbar i{background-image:linear-gradient(90deg,transparent 0,rgba(255,255,255,.35) 50%,transparent 100%);background-size:60px 100%;background-repeat:repeat-x;animation:bulkMove 1s linear infinite}
.bulk.full .pbar i{background:var(--ok)}
@keyframes bulkMove{from{background-position:-60px 0}to{background-position:60px 0}}
.chip-run{display:inline-flex;align-items:center;gap:6px;border-color:var(--ok);color:var(--ok);white-space:nowrap}
.chip-run::before{content:"";width:10px;height:10px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:spin .8s linear infinite}
.chip-run[hidden]{display:none}
@keyframes spin{to{transform:rotate(360deg)}}
.empty-listen{margin-top:16px}.empty-listen h1{margin-top:0}
.sec-ok{color:var(--ok)}
@media (prefers-reduced-motion:reduce){.bulk.run .pbar i,.chip-run::before{animation:none}}