/* Layout: one centered 36rem column with the tab bar pinned to the bottom for thumb reach; review opens as a full-height stage with the grade buttons on the bottom edge. */
:root{
  --bg:#EFF1F5; --surface:#FFFFFF; --ink:#141824; --muted:#596173; --line:#D7DBE5;
  --accent:#2947A0; --accent-ink:#FFFFFF; --accent-soft:#E2E8F7;
  --again:#A8261F; --again-soft:#F7E2E0; --hard:#7E5300; --hard-soft:#F4EAD6;
  --good:#1C6638; --good-soft:#DEEEE3; --easy:#2947A0; --easy-soft:#E2E8F7;
  --scrim:rgba(20,24,36,.42);
  --f-card:"Gentium Book Plus","Noto Serif Hebrew",Georgia,"Times New Roman",serif;
  --f-ui:"Instrument Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --r:14px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0E1016; --surface:#181B24; --ink:#E6E8EF; --muted:#9AA1B3; --line:#2A2E3B;
  --accent:#91A8F0; --accent-ink:#0E1016; --accent-soft:#1E2640;
  --again:#F08A82; --again-soft:#3A1F1D; --hard:#E2B35E; --hard-soft:#342915;
  --good:#82C99A; --good-soft:#182E1F; --easy:#91A8F0; --easy-soft:#1E2640;
  --scrim:rgba(0,0,0,.6); color-scheme:dark;
}}
:root[data-theme="dark"]{
  --bg:#0E1016; --surface:#181B24; --ink:#E6E8EF; --muted:#9AA1B3; --line:#2A2E3B;
  --accent:#91A8F0; --accent-ink:#0E1016; --accent-soft:#1E2640;
  --again:#F08A82; --again-soft:#3A1F1D; --hard:#E2B35E; --hard-soft:#342915;
  --good:#82C99A; --good-soft:#182E1F; --easy:#91A8F0; --easy-soft:#1E2640;
  --scrim:rgba(0,0,0,.6); color-scheme:dark;
}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-ui);font-size:16px;line-height:1.45;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}
img{max-width:100%}
body.locked{overflow:hidden}
*{box-sizing:border-box}
[hidden]{display:none!important}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
h1,h2{text-wrap:balance}

.app{max-width:36rem;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:calc(10px + env(safe-area-inset-top,0px)) calc(96px + env(safe-area-inset-bottom,0px))}
body.signed-out .app{padding-bottom:calc(24px + env(safe-area-inset-bottom,0px))}
body.signed-out .tabs{display:none}
.login{min-height:70vh;justify-content:center}
.decklist{display:flex;flex-direction:column;gap:10px}
.sync[data-s="offline"]::before,.sync[data-s="signin"]::before{background:var(--hard)}
.top{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding-block:6px 18px}
.brand{display:flex;align-items:baseline;gap:10px;min-width:0}
.word{font-family:var(--f-card);font-style:italic;font-size:1.55rem;line-height:1}
.greek{font-family:var(--f-card);color:var(--muted);font-size:1rem}
.sync{font-size:.78rem;color:var(--muted);white-space:nowrap;display:flex;align-items:center;gap:6px}
.sync::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--muted)}
.sync[data-s="synced"]::before,.sync[data-s="saved"]::before{background:var(--good)}
.sync[data-s="saving"]::before{background:var(--hard)}
.sync[data-s="slow"]::before,.sync[data-s="nodb"]::before,.sync[data-s="readonly"]::before{background:var(--again)}

.view{display:flex;flex-direction:column;gap:18px}
.view h1{font-family:var(--f-card);font-weight:400;font-size:1.7rem;line-height:1.15;margin:0}
.lede{margin:-8px 0 0;color:var(--muted);font-size:.95rem}
.sec-label{margin:0 0 -8px;font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:600}

.counts{display:grid;grid-template-columns:repeat(3,1fr);background:var(--surface);border:1px solid var(--line);border-radius:var(--r)}
.count{padding:16px 14px 14px;display:flex;flex-direction:column;gap:2px;min-width:0}
.count+.count{border-left:1px solid var(--line)}
.count .n{font-size:2.15rem;font-weight:600;font-variant-numeric:tabular-nums;line-height:1.1}
.count .l{font-size:.72rem;letter-spacing:.07em;text-transform:uppercase;color:var(--muted)}
.n-new{color:var(--accent)}.n-learn{color:var(--again)}.n-due{color:var(--good)}
.zero{opacity:.35}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 16px;border-radius:12px;border:1px solid var(--line);background:var(--surface);font-weight:500;text-decoration:none;color:var(--ink)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:600}
.btn.big{min-height:56px;font-size:1.05rem;width:100%}
.btn:disabled{opacity:.5;cursor:default}
.btn.quiet{background:transparent;border-color:transparent;color:var(--muted);padding:0 10px}
.btn.danger{color:var(--again)}
.btn.small{min-height:36px;padding:0 12px;font-size:.88rem}
.btn[data-armed="1"]{background:var(--again-soft);border-color:var(--again);color:var(--again)}
.meta{color:var(--muted);font-size:.9rem;margin:0;font-variant-numeric:tabular-nums}

.notice{background:var(--again-soft);color:var(--again);border-radius:12px;padding:12px 14px;font-size:.92rem;margin:0}

.list{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.deckrow{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:2px 14px;align-items:center;text-align:left;padding:13px 14px;background:none;border:0;border-top:1px solid var(--line);width:100%}
.deckrow:first-child{border-top:0}
.dname{font-weight:600;font-size:1rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.dsub{grid-column:1;font-size:.8rem;color:var(--muted)}
.dsub.todo{color:var(--hard)}
.dcounts{grid-row:1/span 2;grid-column:2;display:flex;gap:4px;font-variant-numeric:tabular-nums;font-weight:600}
.dcounts span{min-width:2.1ch;text-align:right}

.picks{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;display:flex;flex-direction:column;gap:12px}
.eyebrow{font-size:.72rem;letter-spacing:.09em;text-transform:uppercase;color:var(--accent);font-weight:600;margin:0}
.picks h2{margin:0;font-family:var(--f-card);font-size:1.35rem;font-weight:400;line-height:1.2}
.picks .sub{margin:0;color:var(--muted);font-size:.9rem}
.opts{display:flex;flex-direction:column;gap:8px}
.opt{text-align:left;border:1px solid var(--line);border-radius:12px;background:var(--bg);padding:12px 14px;display:flex;flex-direction:column;gap:4px;width:100%;min-width:0}
.opt[aria-checked="true"]{border-color:var(--accent);background:var(--accent-soft);box-shadow:inset 0 0 0 1px var(--accent)}
.opt-front{font-family:var(--f-card);font-size:1.06rem;line-height:1.35;unicode-bidi:plaintext}
.opt-back{font-size:.88rem;color:var(--muted);unicode-bidi:plaintext}
.actions{display:flex;flex-wrap:wrap;gap:8px}
.actions .btn{flex:1 1 auto}

.empty{background:var(--surface);border:1px dashed var(--line);border-radius:var(--r);padding:22px 18px;display:flex;flex-direction:column;gap:12px}
.empty h2{margin:0;font-family:var(--f-card);font-weight:400;font-size:1.35rem}
.empty p{margin:0;color:var(--muted)}
.epigraph{font-family:var(--f-card);color:var(--muted);font-size:.95rem;margin:6px 0 0}
.epigraph span{font-family:var(--f-ui);font-size:.78rem;letter-spacing:.04em;margin-left:6px}

form{display:flex;flex-direction:column;gap:14px}
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
label{font-size:.85rem;font-weight:600}
label .soft{font-weight:400;color:var(--muted)}
textarea,input[type=text],input[type=search],input[type=number],select{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:12px;font-size:16px;width:100%;min-width:0}
select{padding-right:32px}
textarea{resize:vertical;min-height:84px;font-family:var(--f-card);font-size:1.08rem;line-height:1.4;unicode-bidi:plaintext}
.check{display:flex;gap:10px;align-items:center;font-weight:400;font-size:.95rem}
.check input{width:20px;height:20px;accent-color:var(--accent);flex:none}
.hint{font-size:.88rem;color:var(--muted);margin:0}
.formerr{color:var(--again);font-size:.9rem;margin:0}
.banner{background:var(--accent-soft);border-radius:12px;padding:10px 12px;font-size:.9rem;display:flex;align-items:center;justify-content:space-between;gap:10px}

.toolbar{display:flex;gap:8px;flex-wrap:wrap}
.chip{border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:6px 13px;font-size:.85rem;min-height:34px}
.chip[aria-pressed="true"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.row{display:flex;flex-direction:column;gap:3px;text-align:left;padding:13px 14px;background:none;border:0;border-top:1px solid var(--line);width:100%;min-width:0}
.row:first-child{border-top:0}
.row-front{font-family:var(--f-card);font-size:1.04rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;unicode-bidi:plaintext}
.row-meta{font-size:.8rem;color:var(--muted);display:flex;gap:10px;flex-wrap:wrap}
.s-due{color:var(--good)}.s-new{color:var(--accent)}.s-learn{color:var(--again)}.s-susp{color:var(--hard)}
.listempty{padding:18px 14px;color:var(--muted);margin:0}

.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px;display:flex;flex-direction:column;gap:14px}
.panel h2{margin:0;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:600}
.panel p{margin:0}
.setrow{display:flex;align-items:center;justify-content:space-between;gap:14px}
.setrow .field{flex:1}
.setrow input[type=number]{width:6.5rem;text-align:center;font-variant-numeric:tabular-nums}
.setrow select{width:9rem}
.drow{display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:10px;align-items:center}
.drow input{padding:9px 10px}
.drow .meta{white-space:nowrap}
.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px 8px;margin:0}
.stats div{display:flex;flex-direction:column}
.stats dt{font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);order:2}
.stats dd{margin:0;font-size:1.4rem;font-weight:600;font-variant-numeric:tabular-nums;order:1}
kbd{font-family:var(--f-ui);font-size:.8rem;border:1px solid var(--line);border-bottom-width:2px;border-radius:5px;padding:0 5px;background:var(--bg)}

.tabs{position:fixed;left:0;right:0;bottom:0;z-index:5;background:var(--surface);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom,0px);padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.tabs-in{max-width:36rem;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr)}
.tab{display:flex;flex-direction:column;align-items:center;gap:3px;padding:9px 4px 8px;text-decoration:none;color:var(--muted);font-size:.74rem;font-weight:500}
.tab svg{width:22px;height:22px}
.tab[aria-current="page"]{color:var(--accent)}

.stage{position:fixed;inset:0;z-index:20;background:var(--bg);display:flex;flex-direction:column}
.stage-in{flex:1;display:flex;flex-direction:column;gap:12px;width:100%;max-width:36rem;margin:0 auto;min-height:0;padding-top:calc(10px + env(safe-area-inset-top,0px));padding-bottom:calc(14px + env(safe-area-inset-bottom,0px));padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.stage-top{display:flex;align-items:center;justify-content:space-between;gap:8px}
.stage-top .side{display:flex;gap:2px}
.remain{display:flex;gap:14px;font-variant-numeric:tabular-nums;font-weight:600;font-size:1.02rem}
.face{flex:1;min-height:0;overflow:auto;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:24px 22px;display:flex;flex-direction:column;cursor:default}
.face.tappable{cursor:pointer}
.face-in{margin-block:auto;display:flex;flex-direction:column;gap:16px}
.tags{display:flex;gap:10px;flex-wrap:wrap}
.tag{font-size:.7rem;letter-spacing:.09em;text-transform:uppercase;color:var(--muted)}
.tag.deck{color:var(--accent);font-weight:600}
.front{font-family:var(--f-card);font-size:clamp(1.35rem,4.6vw,1.75rem);line-height:1.35;white-space:pre-wrap;unicode-bidi:plaintext;text-wrap:pretty;margin:0}
.front.ref{font-size:clamp(1.7rem,6vw,2.2rem)}
.hintbtn{align-self:flex-start;padding-left:0}
.hinttext{font-family:var(--f-card);font-size:1.08rem;line-height:1.6;color:var(--muted);letter-spacing:.06em;margin:0;unicode-bidi:plaintext}
.answer{display:flex;flex-direction:column;gap:12px}
.rule{height:1px;background:var(--line);border:0;margin:2px 0;width:100%}
.back{font-family:var(--f-card);font-size:clamp(1.15rem,4vw,1.42rem);line-height:1.4;white-space:pre-wrap;unicode-bidi:plaintext;margin:0}
.context{font-size:.93rem;color:var(--muted);white-space:pre-wrap;unicode-bidi:plaintext;margin:0}
.source{font-size:.78rem;color:var(--muted);margin:0}
.grades{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
.grade{min-height:66px;border-radius:12px;border:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-weight:600;font-size:.98rem}
.grade .iv{font-size:.78rem;font-weight:500;font-variant-numeric:tabular-nums;opacity:.85}
.g1{background:var(--again-soft);color:var(--again)}.g2{background:var(--hard-soft);color:var(--hard)}
.g3{background:var(--good-soft);color:var(--good)}.g4{background:var(--easy-soft);color:var(--easy)}
.rest{margin-block:auto;display:flex;flex-direction:column;gap:10px}
.rest h2{font-family:var(--f-card);font-weight:400;font-size:1.65rem;margin:0}
.rest p{margin:0;color:var(--muted)}

.sheet{position:fixed;inset:0;z-index:30;background:var(--scrim);display:flex;align-items:flex-end;justify-content:center}
.sheet-in{background:var(--bg);width:100%;max-width:36rem;max-height:92%;overflow:auto;border-radius:18px 18px 0 0;padding-top:16px;padding-bottom:calc(18px + env(safe-area-inset-bottom,0px));padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.sheet-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.sheet-head h2{margin:0;font-family:var(--f-card);font-weight:400;font-size:1.4rem}

.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(84px + env(safe-area-inset-bottom,0px));z-index:40;background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:999px;font-size:.9rem;max-width:calc(100% - 32px);text-align:center}
@media (prefers-reduced-motion:no-preference){
  .btn,.opt,.chip,.grade,.deckrow{transition:background-color .15s,border-color .15s,transform .1s}
  .grade:active,.btn:active{transform:scale(.98)}
}