/* The styles of the study page (first written for the old one-page site). The phone bar and other MVC-only styles are in mvc.css. */
:root{color-scheme:light;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}body{margin:0}[hidden]{display:none!important}img{max-width:100%}
/* Layout: sticky control bar, vertical subjects list on the left, one reading column of study notes */
:root{
  --bg:#f3f5f8; --paper:#ffffff; --ink:#18233a; --muted:#5d6880; --line:#d9dee8;
  --accent:#1f5fae; --accent-soft:#e3ecf8; --play:#0f7a6a; --play-soft:#dcf1ec;
  --f-display:"Frank Ruhl Libre", Georgia, "Times New Roman", serif;
  --f-body:"IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-he:"IBM Plex Sans Hebrew", "Arial Hebrew", "Noto Sans Hebrew", Arial, sans-serif;
  --bar-h:58px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#10151f; --paper:#171e2b; --ink:#e4e9f2; --muted:#98a3b8; --line:#2a3446;
  --accent:#7fb0f0; --accent-soft:#1d2c44; --play:#5ad0bb; --play-soft:#173a35; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#10151f; --paper:#171e2b; --ink:#e4e9f2; --muted:#98a3b8; --line:#2a3446;
  --accent:#7fb0f0; --accent-soft:#1d2c44; --play:#5ad0bb; --play-soft:#173a35; color-scheme:dark}

*{box-sizing:border-box}
html{scroll-padding-top:calc(var(--bar-h) + 14px)}
body{background:var(--bg);color:var(--ink);font:16px/1.6 var(--f-body)}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--paper)}
a{color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.bar{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:var(--paper);border-bottom:1px solid var(--line);
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:10px}
.bar-in{max-width:1180px;margin:0 auto;display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center}
.brand{font:700 1.25rem/1 var(--f-display);display:flex;gap:8px;align-items:baseline;white-space:nowrap}
.brand .he-mark,.brand .hw{font-family:var(--f-he);color:var(--accent);font-weight:600}
.controls{display:flex;flex-wrap:wrap;gap:10px 14px;align-items:center;margin-left:auto}
.controls label{font-size:.8rem;color:var(--muted);display:flex;gap:6px;align-items:center;text-transform:uppercase;letter-spacing:.05em}
input[type=search],select{font:inherit;font-size:.9rem;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:6px 10px;min-width:0}
input[type=search]{width:min(240px,60vw)}
select{max-width:200px}
input[type=range]{accent-color:var(--accent);width:90px}
.switch{cursor:pointer;user-select:none}
.switch input{position:absolute;opacity:0;width:1px;height:1px}
.switch .track{width:34px;height:20px;border-radius:999px;background:var(--line);position:relative;transition:background .15s;flex:none}
.switch .track::after{content:"";position:absolute;top:3px;left:3px;width:14px;height:14px;border-radius:50%;background:var(--paper);transition:transform .15s;box-shadow:0 1px 2px rgba(0,0,0,.25)}
.switch input:checked + .track{background:var(--accent)}
.switch input:checked + .track::after{transform:translateX(14px)}
.switch input:focus-visible + .track{outline:2px solid var(--accent);outline-offset:2px}
.niq-demo{font:600 1rem/1 var(--f-he);color:var(--accent);text-transform:none;letter-spacing:0}
.niq-on .he{line-height:1.55;padding-block:0 1px}
.about-link{font:500 .85rem/1 var(--f-body);text-decoration:none;color:var(--accent);background:var(--accent-soft);border-radius:999px;padding:6px 11px;align-self:center}
.about-link:hover{background:var(--accent);color:var(--paper)}
button.about-link{border:0;cursor:pointer}
.review-btn .rev-n{display:inline-block;min-width:1.4em;padding:0 5px;margin-left:2px;border-radius:999px;background:var(--accent);color:var(--paper);font-size:.8em;text-align:center}
.review-btn .rev-n:empty,#teacherLink .rev-n:empty,#parentLink .rev-n:empty,#boardLink .rev-n:empty{display:none}
#boardLink .rev-n{display:inline-block;min-width:1.4em;padding:0 5px;margin-left:2px;border-radius:999px;background:#c62828;color:#fff;font-size:.8em;text-align:center}
#parentLink .rev-n{display:inline-block;min-width:1.4em;padding:0 5px;margin-left:2px;border-radius:999px;background:var(--accent);color:var(--paper);font-size:.8em;text-align:center}
#teacherLink .rev-n{display:inline-block;min-width:1.4em;padding:0 5px;margin-left:2px;border-radius:999px;background:var(--accent);color:var(--paper);font-size:.8em;text-align:center}
#teacherLink .req-n{background:#e8710a}
.rev-prog{color:var(--muted);font-size:.9em;margin:0 0 8px}
.rev-q{font-size:1.05rem;margin:6px 0 12px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.rev-big{font:500 1.9rem/1.3 var(--f-he)}
.rev-res{min-height:1.4em;margin:10px 0}
.rev-miss li{margin:4px 0}
.rev-streak{font-size:1.1rem;font-weight:600}
.rep-wrap{position:fixed;inset:0;z-index:50;background:rgba(10,15,25,.45);display:flex;align-items:flex-start;justify-content:center;padding:8vh 16px 16px;overflow:auto}
.rep{background:var(--paper);color:var(--ink);border:1px solid var(--line);border-radius:14px;box-shadow:0 18px 50px rgba(0,0,0,.25);width:min(560px,100%);padding:16px 18px 18px}
.rep-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.rep-head h3{margin:0;font:600 1.1rem/1.3 var(--f-body)}
.rep-x,.rep-rm{border:0;background:transparent;color:var(--muted);font-size:1.3rem;line-height:1;cursor:pointer;padding:2px 6px;border-radius:6px}
.rep-x:hover,.rep-rm:hover{background:var(--bg);color:var(--ink)}
.rep-tip{color:var(--muted);font-size:.9rem;margin:6px 0 12px}
.rep-kinds{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.rep-kinds button{font:500 .85rem/1.2 var(--f-body);border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:999px;padding:7px 11px;cursor:pointer}
.rep-kinds button[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:var(--paper)}
.rep textarea{width:100%;font:inherit;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);padding:9px 11px;resize:vertical}
.rep-lab2{margin:12px 0 4px;font:600 .75rem/1.2 var(--f-body);text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.rep-ctx{display:grid;gap:4px}
.rep-part{display:flex;align-items:center;gap:8px;background:var(--bg);border-radius:8px;padding:5px 6px 5px 10px;font-size:.9rem}
.rep-lab{color:var(--muted);min-width:7.5em}
.rep-val{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rep-he{flex:1;font:600 1.05rem/1.3 var(--f-he);color:var(--accent);text-align:left}
.rep-row{display:flex;gap:8px;margin-top:14px}
.rep-row button{font:500 .9rem/1 var(--f-body);border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:8px;padding:10px 14px;cursor:pointer}
.rep-row button.primary{background:var(--accent);border-color:var(--accent);color:var(--paper)}
.rep-msg{margin-top:8px;font-size:.9rem;color:var(--muted)} .rep-msg.bad{color:#c62828}
.rep-done{font-size:1.05rem;margin:14px 0 0}
.fx-report{margin-top:6px}
/* Shoresh: the root letters violet and bold; while the word is selected or playing they take the word's own colour and the
   other letters fade, so they never clash with the blue or the green */
.he .rt,.rt-demo{color:#7c3aed;font-weight:800}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .he .rt,:root:not([data-theme="light"]) .rt-demo{color:#c4b5fd}}
:root[data-theme="dark"] .he .rt,:root[data-theme="dark"] .rt-demo{color:#c4b5fd}
.he:hover:has(.rt),.he.speaking:has(.rt){color:color-mix(in srgb,var(--paper) 60%,transparent)}
.he:hover .rt.rt.rt,.he.speaking .rt.rt.rt{color:var(--paper)}
.rate-val{font-variant-numeric:tabular-nums;min-width:3ch;color:var(--ink);text-transform:none;letter-spacing:0;font:inherit;background:none;border:0;padding:2px 4px;cursor:pointer;border-radius:6px}
.rate-val:hover{background:var(--accent-soft)}
.rate-step{font:600 1rem/1 var(--f-body);width:30px;height:30px;padding:0;border:1px solid var(--line);border-radius:50%;background:var(--paper);color:var(--accent);cursor:pointer;flex:none;touch-action:manipulation}
.rate-step:hover{border-color:var(--accent)}
.rate-step:active{background:var(--accent-soft)}

.notice{max-width:1180px;margin:12px auto 0;border:1px solid var(--line);border-left:4px solid #c9821b;background:var(--paper);
  border-radius:6px;padding:12px 14px;font-size:.92rem}
.notice strong{display:block;margin-bottom:4px}
.notice ul{margin:6px 0 0;padding-left:20px}

.wrap{max-width:1120px;margin:0 auto;display:grid;grid-template-columns:240px minmax(0,1fr);gap:28px;align-items:start;
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:20px 80px}
.all-btn{display:none;flex:none;font:600 .8rem/1 var(--f-body);color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:999px;
  padding:7px 12px 7px 10px;cursor:pointer;gap:6px;align-items:center}
.all-btn svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2}
.all-btn[aria-expanded=true]{background:var(--accent);color:var(--paper);border-color:var(--accent)}
.side{position:sticky;top:calc(var(--bar-h) + env(safe-area-inset-top,0px) + 16px);max-height:calc(100vh - var(--bar-h) - 32px);
  overflow-y:auto;overscroll-behavior:contain;background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:12px 8px 12px 10px;
  scrollbar-width:thin;scrollbar-color:var(--line) transparent}
.side h2{font:600 .72rem/1 var(--f-body);text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:2px 6px 10px}
.side-list{display:flex;flex-direction:column;gap:1px;counter-reset:u}
.side-list a{display:flex;gap:8px;align-items:baseline;padding:5px 8px;border-radius:6px;color:var(--ink);text-decoration:none;font-size:.88rem;line-height:1.3}
.side-list a::before{counter-increment:u;content:counter(u);font-size:.7rem;color:var(--muted);font-variant-numeric:tabular-nums;min-width:2ch;text-align:right;flex:none}
.side-list a:hover{background:var(--accent-soft)}
.side-list a.on{background:var(--accent-soft);color:var(--accent);font-weight:600}
.side-list a.on::before{color:var(--accent)}
.panel{position:fixed;left:0;right:0;top:var(--bar-bottom,100px);bottom:0;z-index:4;background:color-mix(in srgb,var(--bg) 70%,transparent);
  backdrop-filter:blur(3px);overflow:auto;
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:14px 40px}
.panel-in{max-width:1180px;margin:0 auto;background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:16px 18px;
  box-shadow:0 12px 32px rgba(10,20,40,.18)}
.panel h2{font:600 .72rem/1 var(--f-body);text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 0 12px}
.panel-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:2px 10px;counter-reset:u}
.panel-grid a{display:flex;gap:8px;align-items:baseline;padding:6px 8px;border-radius:6px;color:var(--ink);text-decoration:none;font-size:.9rem}
.panel-grid a::before{counter-increment:u;content:counter(u);font-size:.72rem;color:var(--muted);font-variant-numeric:tabular-nums;min-width:2ch;text-align:right}
.panel-grid a:hover{background:var(--accent-soft)}
.panel-grid a.on{background:var(--accent-soft);color:var(--accent);font-weight:600}

main{min-width:0}
.howto{max-width:1180px;margin:8px auto 0;font-size:.88rem;color:var(--muted)}
.howto summary{cursor:pointer;display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--accent);list-style:none;padding:2px 0;user-select:none}
.howto summary::-webkit-details-marker{display:none}
.howto summary::before{content:"";width:7px;height:7px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(-45deg);transition:transform .15s;margin-right:2px}
.howto[open] summary::before{transform:rotate(45deg)}
.howto ul{margin:6px 0 2px;padding-left:20px;display:grid;gap:3px;max-width:90ch}
.howto b{color:var(--ink);font-weight:600}
.howto-count{margin:4px 0 2px;font-size:.8rem}
.unit{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:8px 28px 22px;margin-bottom:22px}
.unit h1{font:700 1.75rem/1.2 var(--f-display);margin:18px 0 6px;text-wrap:balance}
.unit h2{font:600 .78rem/1.2 var(--f-body);text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:26px 0 8px;padding-top:12px;border-top:1px solid var(--line)}
.unit h3{font:600 1.05rem/1.3 var(--f-body);margin:18px 0 6px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.unit p,.unit li{max-width:68ch}
.unit ul,.unit ol{padding-left:22px;margin:6px 0}
.unit li{margin:3px 0}
.tbl{overflow-x:auto;margin:10px 0}
.tbl{scrollbar-width:thin;scrollbar-color:var(--line) transparent}
.tbl.more-r{-webkit-mask-image:linear-gradient(to right,#000 calc(100% - 40px),transparent);mask-image:linear-gradient(to right,#000 calc(100% - 40px),transparent)}
.tbl.more-l{-webkit-mask-image:linear-gradient(to left,#000 calc(100% - 40px),transparent);mask-image:linear-gradient(to left,#000 calc(100% - 40px),transparent)}
.tbl.more-l.more-r{-webkit-mask-image:linear-gradient(to right,transparent,#000 40px,#000 calc(100% - 40px),transparent);mask-image:linear-gradient(to right,transparent,#000 40px,#000 calc(100% - 40px),transparent)}
table{border-collapse:collapse;font-size:.92rem;min-width:100%}
th,td{border:1px solid var(--line);padding:6px 10px;text-align:left;vertical-align:top}
th{background:var(--bg);font-weight:600}

/* the tappable Hebrew word */
.he{font:500 1.12em/1.3 var(--f-he);color:var(--accent);background:var(--accent-soft);border:0;border-radius:5px;
  padding:1px 6px 2px;margin:0 1px;cursor:pointer;unicode-bidi:isolate;direction:rtl;display:inline;
  -webkit-tap-highlight-color:transparent;transition:background .15s,color .15s}
.he:hover{background:var(--accent);color:var(--paper)}
.he.speaking{background:var(--play);color:var(--paper);box-shadow:0 0 0 3px var(--play-soft)}
.no-voice .he{cursor:default}

.he.custom{box-shadow:inset 0 -2px 0 var(--play)}
.fixer{position:fixed;z-index:30;max-height:calc(100vh - 16px);max-height:calc(100dvh - 16px);overflow:auto;overscroll-behavior:contain;width:min(320px,calc(100vw - 32px));background:var(--paper);color:var(--ink);border:1px solid var(--line);
  border-radius:10px;box-shadow:0 10px 28px rgba(10,20,40,.22);padding:12px;display:flex;flex-direction:column;gap:8px;font-size:.85rem}
.fixer .fx-head{display:flex;align-items:center;justify-content:space-between;gap:8px}
.fixer .fx-close{font-size:1.2rem;line-height:1;padding:3px 9px}
.fixer .say-fix[hidden]{display:none}
.fixer h4{margin:0;font:600 .72rem/1.2 var(--f-body);text-transform:uppercase;letter-spacing:.07em;color:var(--muted)}
.fixer .word{font:600 1.3rem/1.3 var(--f-he);color:var(--accent)}
.fixer input{font:500 1.1rem/1.3 var(--f-he);color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:6px 8px;width:100%;direction:rtl}
.fixer .row{display:flex;gap:6px;flex-wrap:wrap}
.fixer button{font:500 .8rem/1 var(--f-body);border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:6px;padding:7px 10px;cursor:pointer}
.fixer button.primary{background:var(--accent);border-color:var(--accent);color:var(--paper)}
.fixer .tip{color:var(--muted);line-height:1.4}
.fixer .pw{display:flex;flex-direction:column;gap:4px}
.fixer .pw input{direction:ltr;font:inherit;font-size:.9rem}
.fixer .word + .say-fix + .niq-h{border-top:0;margin-top:2px;padding-top:0}
.fixer .niq-h{margin-top:6px;padding-top:8px;border-top:1px solid var(--line)}
.fixer .marks{display:flex;flex-wrap:wrap;gap:4px;direction:rtl}
.fixer .marks button{font:500 1.15rem/1 var(--f-he);padding:4px 7px;min-width:34px}
.fixer .rec-btn.on{background:#c62828;border-color:#c62828;color:#fff}
.fixer button:disabled{opacity:.45;cursor:default}
.fixer .sense-row button.on{background:var(--accent-soft);border-color:var(--accent);color:var(--accent);font-weight:600}
.fixer .opt-row{flex-direction:column;align-items:stretch}
.fixer .opt-row button{text-align:left}
.fixer .sense-row span{font:600 1.05rem/1 var(--f-he)}
.fixer button.shared{background:var(--play-soft);border-color:transparent;color:var(--play)}
.fixer .shared-row button{background:var(--play-soft);border-color:transparent;color:var(--play)}
.linkbtn{font:inherit;color:var(--accent);background:none;border:0;padding:0;text-decoration:underline;cursor:pointer}
.unit-nav{position:sticky;top:calc(var(--bar-h) + env(safe-area-inset-top,0px));z-index:3;display:flex;justify-content:space-between;align-items:center;gap:10px;
  background:var(--paper);margin:-8px -28px 0;padding:10px 28px;border-bottom:1px solid var(--line);border-radius:10px 10px 0 0}
.unit-nav button{font:500 .85rem/1.2 var(--f-body);color:var(--accent);background:var(--accent-soft);border:0;border-radius:999px;padding:7px 12px;cursor:pointer;
  display:inline-flex;align-items:center;gap:6px;min-width:0;max-width:48%}
.unit-nav button span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.unit-nav button.next{margin-left:auto}
.unit-nav .arr{font-size:1.1em;line-height:1;flex:none}
.unit-nav button:hover{background:var(--accent);color:var(--paper)}
.searching .unit-nav{display:none}
/* practice sentences and listening quiz */
.practice{margin-top:28px;padding-top:6px;border-top:2px solid var(--line)}
.practice .px-tip{color:var(--muted);margin:4px 0 10px}
.px-bar{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0 4px}
/* the exercise buttons as an accordion: one per row, the open exercise right under its button */
.px-bar.px-acc{flex-direction:column;flex-wrap:nowrap;align-items:stretch;max-width:560px;gap:6px}
.px-bar.px-acc>button{text-align:start;display:flex;align-items:center;gap:8px;padding:11px 12px}
.px-bar.px-acc>button::before{content:"▸";font-size:.8em;opacity:.7;transition:transform .15s}
.px-bar.px-acc>button[aria-expanded=true]::before{transform:rotate(90deg)}
.px-bar.px-acc>button[aria-expanded=true]{box-shadow:inset 0 0 0 2px currentColor}
.px-bar.px-acc>.px-box{margin:0 0 6px;max-width:none}
.px-acc-tail{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-top:4px}
.px-bar button,.px-box button{font:500 .85rem/1 var(--f-body);border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:8px;padding:9px 12px;cursor:pointer}
.px-bar .px-quiz{background:var(--accent);border-color:var(--accent);color:var(--paper)}
.px-list .px-en{color:var(--muted);cursor:pointer;border-radius:4px;transition:color .15s}
.practice:not(.px-on) .px-en:not(.seen){color:transparent;background:var(--line);user-select:none}
.searching .practice .px-en{color:var(--muted);background:none}
.px-box{margin:12px 0 18px;padding:14px;border:1px solid var(--line);border-radius:10px;background:var(--paper);display:flex;flex-direction:column;gap:10px;max-width:560px}
.px-box[hidden]{display:none}
.px-q{font-size:.8rem;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.px-choices{display:grid;gap:8px}
.px-choices button{text-align:left;padding:11px 12px;line-height:1.3}
.px-choices button.ok{background:var(--play-soft);border-color:var(--play);color:var(--play);font-weight:600}
.px-choices button.no{background:#fdecea;border-color:#c62828;color:#c62828}
.px-choices button:disabled{cursor:default;opacity:1}
.px-ans{font:600 1.25rem/1.4 var(--f-he);color:var(--accent)}
.px-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.px-score{font-weight:600}
.ph-line{display:flex;flex-wrap:wrap;gap:6px;min-height:52px;align-items:center;padding:6px 0;border-bottom:2px solid var(--line)}
.ph-tiles{display:flex;flex-wrap:wrap;gap:8px;padding-top:4px}
.ph-hint{color:var(--muted);font-size:.85rem}
.px-box .ph-tile,.px-box .ph-word{font:600 1.25rem/1.2 var(--f-he);padding:8px 12px;border-radius:10px}
.px-box .ph-tile{background:var(--paper);border:1px solid var(--line);box-shadow:0 2px 0 var(--line)}
.px-box .ph-tile:disabled{opacity:.25}
.px-box .ph-word{background:var(--accent-soft);border:1px solid var(--accent);color:var(--accent)}
.px-box .ph-word.ok{background:var(--play-soft);border-color:var(--play);color:var(--play)}
.px-box .ph-word.no{background:#fdecea;border-color:#c62828;color:#c62828}
.px-bar .px-puz{background:#fdf0e0;border-color:transparent;color:#a2560b}
.px-box .abc-mW{font:600 1.3rem/1.2 var(--f-he);padding:9px}
.px-box .abc-match .abc-mW:disabled:not(.ok){opacity:.45;cursor:default}
.px-bar .px-speak{background:#fdf0e0;border-color:transparent;color:#a2560b}
.px-words{font:600 1.25rem/1.6 var(--f-he)}
.px-words .w-ok{color:var(--play)}
.px-words .w-no{color:#c62828;text-decoration:underline wavy}
.px-said{font:500 1.05rem/1.4 var(--f-he)}
.px-good{color:var(--play);font-weight:600}
.px-try{color:#a2560b;font-weight:600}
.px-box .primary{background:var(--accent);border-color:var(--accent);color:var(--paper)}
/* user + progress */
.user-btn{font:500 .85rem/1 var(--f-body);border:1px solid var(--line);background:var(--accent-soft);color:var(--accent);border-radius:999px;padding:7px 12px;cursor:pointer;white-space:nowrap}
.stats-dlg{position:fixed;inset:0;z-index:20;background:rgba(10,15,25,.45);display:flex;align-items:flex-start;justify-content:center;padding:max(16px,env(safe-area-inset-top)) 16px 16px;overflow:auto}
.stats-dlg[hidden]{display:none}
.stats-dlg.locked{background:var(--bg)}
body.locked{overflow:hidden}
.stats-dlg.locked .stats-card::before{content:'עברית  Duo Hebrew';display:block;font:700 1.1rem/1.2 var(--f-display);color:var(--accent);margin-bottom:10px}
.stats-card{background:var(--paper);color:var(--ink);border-radius:14px;max-width:760px;width:100%;padding:18px 18px 22px;box-shadow:0 10px 40px rgba(0,0,0,.25)}
.stats-card h3{margin:18px 0 8px;font:600 .78rem/1.2 var(--f-body);text-transform:uppercase;letter-spacing:.07em;color:var(--muted)}
.stats-head{display:flex;align-items:center;gap:10px;justify-content:space-between;flex-wrap:wrap}
.stats-head h2{margin:0;font:700 1.4rem/1.2 var(--f-display)}
.stats-card button{font:500 .85rem/1 var(--f-body);border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:8px;padding:8px 11px;cursor:pointer}
.stats-card .primary{background:var(--accent);border-color:var(--accent);color:var(--paper)}
.stats-card input[type=text]{font:inherit;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);width:min(260px,100%)}
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:8px}
.tile{background:var(--bg);border-radius:10px;padding:10px 12px}
.tile b{display:block;font:600 1.5rem/1.2 var(--f-body);font-variant-numeric:tabular-nums}
.tile span{color:var(--muted);font-size:.8rem}
.days{display:flex;align-items:flex-end;gap:3px;height:90px;padding-top:6px}
.days div{flex:1;background:var(--accent);border-radius:3px 3px 0 0;min-height:2px;position:relative}
.days div.zero{background:var(--line)}
.days-lab{display:flex;justify-content:space-between;color:var(--muted);font-size:.75rem}
.stats-tbl{width:100%;border-collapse:collapse;font-size:.9rem}
.stats-tbl th,.stats-tbl td{border-bottom:1px solid var(--line);padding:6px 6px;text-align:start;vertical-align:top}
.stats-tbl th{color:var(--muted);font-weight:600;font-size:.8rem}
.stats-tbl td.num{text-align:end;font-variant-numeric:tabular-nums;white-space:nowrap}
.stats-tbl a{cursor:pointer}
.stats-empty{color:var(--muted)}
.user-pick{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:6px}
.signin-row{margin:8px 0}
.emoji-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(44px,1fr));gap:6px;margin:8px 0;max-width:560px}
.stats-card .emoji-grid button{font-size:1.5rem;line-height:1;padding:8px 0;background:var(--bg)}
.stats-card .emoji-grid button.on{background:var(--accent-soft);border-color:var(--accent);box-shadow:0 0 0 2px var(--accent) inset}
.emoji-new summary{cursor:pointer;color:var(--accent);margin-top:6px}
.stats-card button.emoji-me{font-size:1.4rem;line-height:1;padding:4px 7px;vertical-align:middle;background:var(--accent-soft);border-color:transparent}
.stats-card input[type=password]{font:inherit;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);width:min(260px,100%)}
.signin-msg{color:#c62828;min-height:1.2em;margin:4px 0}
.user-chip{display:inline-flex}
.class-ask{margin-top:14px}
.class-ask textarea{width:100%;box-sizing:border-box;font:inherit;margin:6px 0}
.class-ask input[type=email]{font:inherit;padding:5px 8px;border:1px solid var(--line);border-radius:6px;background:var(--bg);color:var(--ink);max-width:100%}
.class-ask summary{cursor:pointer;color:var(--accent)}
.link-btn{background:none;border:0;padding:0;color:var(--accent);text-decoration:underline;cursor:pointer;font:inherit;font-size:.9em}
#statsDlg details.acc,.stats-card details.acc{border:1px solid var(--line);border-radius:10px;margin:8px 0;padding:0 12px}
details.acc>summary{cursor:pointer;list-style:none;display:flex;align-items:center;gap:8px;padding:10px 0}
details.acc>summary::-webkit-details-marker{display:none}
details.acc>summary::before{content:'▸';color:var(--accent);transition:transform .15s}
details.acc[open]>summary::before{transform:rotate(90deg)}
details.acc>summary h3{margin:0}
details.acc .acc-body{padding:0 0 12px}
/* tables in a panel keep a fixed height and scroll inside it; the header row stays on top */
details.acc .tbl{max-height:min(55vh,420px);overflow:auto}
details.acc .tbl th{position:sticky;top:0;z-index:1}
.signin-about{margin:-4px 0 12px;color:var(--muted)}
.user-chip .primary{border-radius:8px 0 0 8px}
.user-chip .user-del{border-radius:0 8px 8px 0;border-left:0;padding:8px 9px;color:var(--muted)}
.miss-he{font:600 1.05rem/1.3 var(--f-he)}
.stats-card button.he{background:var(--accent-soft);color:var(--accent);border-color:transparent;padding:4px 9px}
/* alphabet */
li .ex-he{display:block;margin-top:2px;text-align:left}
.ex-sent strong{font-weight:800;text-decoration:underline;text-underline-offset:4px}
table.abc td.abc-v .he{font-size:1.8rem;line-height:1.2;padding:2px 12px}
table.abc td.abc-l .he{font-size:1.9rem;line-height:1.1;padding:2px 12px}
table.abc .abc-mean{color:var(--muted)}
table.abc td.abc-v{font:500 1.8rem/1.2 var(--f-he);text-align:center;color:var(--accent)}
table.abc .abc-niq{font:500 1.15rem/1.3 var(--f-he)}
.abc-practice{margin-top:28px;padding-top:6px;border-top:2px solid var(--line)}
.abc-practice .abc-btn{font:500 .85rem/1 var(--f-body);border:1px solid var(--line);background:var(--play-soft);color:var(--play);border-radius:8px;padding:9px 12px;cursor:pointer}
.abc-big{font:600 4rem/1.1 var(--f-he);color:var(--accent);text-align:center;padding:6px 0}
.abc-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.abc-choices.he4 button{font:600 2rem/1.1 var(--f-he);text-align:center}
.abc-choices button{padding:11px 12px;line-height:1.3}
.abc-practice .abc-puz{background:#fdf0e0;color:#a2560b}
.abc-slots,.abc-tiles{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-start}
.abc-slots{padding:6px 0;border-bottom:2px solid var(--line)}
.px-box .abc-slot,.px-box .abc-tile{font:600 2rem/1 var(--f-he);width:56px;height:60px;padding:0;border-radius:10px}
.px-box .abc-slot{background:var(--bg);border:2px dashed var(--line);color:var(--accent)}
.px-box .abc-slot.on{border-style:solid;border-color:var(--accent);background:var(--accent-soft);cursor:pointer}
.px-box .abc-slot.ok{border-color:var(--play);background:var(--play-soft);color:var(--play)}
.px-box .abc-slot.no{border-color:#c62828;background:#fdecea;color:#c62828}
.px-box .abc-tile{background:var(--paper);border:1px solid var(--line);color:var(--ink);box-shadow:0 2px 0 var(--line)}
.px-box .abc-tile:disabled{opacity:.25}
.abc-match{display:grid;grid-template-columns:1fr 1fr;gap:12px;max-width:520px}
.abc-col{display:flex;flex-direction:column;gap:8px}
.px-box .abc-mL{font:600 1.8rem/1 var(--f-he);padding:8px}
.px-box .abc-mN{text-align:left;padding:11px 12px}
.px-box .abc-match button.sel{border-color:var(--accent);background:var(--accent-soft)}
.px-box .abc-match button.ok{border-color:var(--play);background:var(--play-soft);color:var(--play)}
.px-box .abc-match .abc-mL:disabled:not(.ok){opacity:.45;cursor:default}
.px-box .abc-match button.no{border-color:#c62828;background:#fdecea}
.px-bar .px-pquiz{background:var(--play-soft);border-color:transparent;color:var(--play)}
.px-rule{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:10px 14px;margin:6px 0 12px;max-width:720px}
.px-rule p{margin:.3em 0}
.px-rule table{border-collapse:collapse;margin:.5em 0;font-size:.92rem}
.px-rule th,.px-rule td{border:1px solid var(--line);padding:4px 8px;text-align:start}
.px-rule th{color:var(--muted);font-weight:600}
.px-note{color:var(--muted);font-size:.85em}
.practice:not(.px-on) .px-en:not(.seen) .px-note{color:transparent}
.searching .practice .px-en .px-note{color:var(--muted)}
.he-affix{font-family:var(--f-he);font-weight:600;color:var(--accent)}
.px-mean{font-weight:600}
.px-blank{font:500 1.35rem/1.6 var(--f-he)}
.px-gap{display:inline-block;border-bottom:2px solid var(--accent);min-width:3em;text-align:center;color:var(--accent)}
.px-hechoices button{text-align:right;font:500 1.15rem/1.3 var(--f-he)}
details.story .story-h{margin:6px 0 10px;font-size:1.05rem}
.story-s{margin:0 0 6px;padding-left:1.6em}
.story-s li{margin:0 0 10px}
.story-he{font-size:1.25rem;line-height:1.5;text-align:right}
.story-en{color:var(--muted);font-size:.92em;margin-top:2px}
.story-trbar{margin:-4px 0 10px}
details.story.tr-off li:not(.seen) .story-en{color:transparent;background:var(--line);border-radius:4px;cursor:pointer;user-select:none;max-width:22em}
details.story.tr-off li:not(.seen) .story-en *{visibility:hidden}
.story-q{margin:10px 0 14px}
.story-qt{margin:0 0 6px;font-weight:600}
.story-res{margin-top:6px;font-size:.92em}
details.notes{margin:8px 0 18px}
details.notes>summary{cursor:pointer;list-style:none;display:flex;align-items:baseline;gap:8px}
details.notes>summary::-webkit-details-marker{display:none}
details.notes>summary::before{content:'▸';color:var(--accent);display:inline-block;transition:transform .15s;font-size:.9rem}
details.notes[open]>summary::before{transform:rotate(90deg)}
details.notes>summary h2{margin:0;border:0;padding-top:0}
details.notes{border-top:1px solid var(--line);padding-top:14px}
details.notes:not([open])>summary::after{content:'· tap to open';color:var(--muted);font-size:.8rem}
.lang-ru details.notes:not([open])>summary::after{content:'· нажмите, чтобы открыть'}
details.sheet{margin:22px 0 8px;border:1px solid var(--line);border-radius:12px;background:var(--bg)}
details.sheet>summary{cursor:pointer;padding:11px 14px;list-style:none;display:flex;flex-wrap:wrap;gap:4px 10px;align-items:baseline}
details.sheet>summary::-webkit-details-marker{display:none}
details.sheet>summary::before{content:'▸';color:var(--accent);display:inline-block;transition:transform .15s}
details.sheet[open]>summary::before{transform:rotate(90deg)}
.sheet-t{font-weight:600;color:var(--accent)}
.sheet-s{color:var(--muted);font-size:.85em}
.sheet-body{padding:0 14px 14px}
.sheet-body h4{margin:16px 0 6px;font-size:.95rem}
.sheet-intro,.sheet-note{color:var(--muted);font-size:.92em;margin:6px 0}
.sheet-tbl td,.sheet-tbl th{white-space:nowrap}
.sheet-tbl .he{margin:1px 0}
.ru{color:var(--muted)}
.sheet-en{color:var(--muted);font-size:.9em}
.sheet-sep{color:var(--muted);margin:0 2px}
.sheet-plain{font-family:var(--f-he)}
.sheet-prompt{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:1.05rem}
.extlink{font-size:.8em;text-decoration:none;margin-left:3px;padding:0 3px;border-radius:4px;color:var(--muted)}
.extlink:hover{color:var(--accent);background:var(--accent-soft)}
.play-lesson{font:500 .78rem/1 var(--f-body);color:var(--play);background:var(--play-soft);border:0;border-radius:999px;
  padding:6px 11px 6px 9px;cursor:pointer;display:inline-flex;gap:5px;align-items:center}
.play-lesson svg{width:12px;height:12px;fill:currentColor}
.play-lesson[aria-pressed=true]{background:var(--play);color:var(--paper)}
[class~=reading]{background:var(--accent-soft);border-radius:6px;box-shadow:0 0 0 4px var(--accent-soft)}
.unit-nav .read-box{display:flex;gap:6px;flex:none;margin:0 auto}
.unit-nav .read-box button{max-width:none;color:var(--play);background:var(--play-soft);font-size:.82rem;padding:7px 12px 7px 10px}
.unit-nav .read-box button[aria-pressed=true],.unit-nav .read-box button:hover{background:var(--play);color:var(--paper)}
.unit-nav .read-box button[hidden]{display:none}
.bookmarked{position:relative;box-shadow:-6px 0 0 -2px #d97706}
.bookmarked::before{content:'🔖';position:absolute;left:-26px;top:.1em;font-size:15px;line-height:1}
td.bookmarked::before,th.bookmarked::before{left:2px;top:-6px;font-size:12px}
a.has-bm::after{content:' 🔖';font-size:.85em}
a.assigned::after{content:' 📌';font-size:.85em}
a.locked{opacity:.55}
a.locked::before{content:'🔒 ';font-size:.85em}
section.unit-locked>*:not(h1):not(.unit-nav):not(.lock-note){display:none!important}
.lock-note{margin:18px 0;padding:14px 16px;border:1px dashed var(--line);border-radius:12px;background:var(--bg);font-size:1.02rem}
.lock-toast{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);z-index:60;background:var(--play);color:var(--paper);padding:10px 16px;border-radius:999px;box-shadow:0 8px 24px rgba(0,0,0,.2);font-weight:600}
a.assigned.has-bm::after{content:' 📌🔖'}
.class-box{background:var(--bg);border-radius:10px;padding:10px 14px;margin:8px 0 4px}
.class-box p{margin:6px 0}
.class-code{font:600 1rem/1 ui-monospace,Consolas,monospace;letter-spacing:.12em;background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:3px 8px}
.class-note{white-space:pre-wrap}
.class-list{margin:4px 0;padding-left:20px}
.class-join input{font:inherit;padding:7px 10px;border:1px solid var(--line);border-radius:8px;background:var(--paper);color:var(--ink);width:9em;text-transform:uppercase;letter-spacing:.08em}
.class-msg{color:var(--muted);font-size:.9rem}
.class-teachers .class-list{list-style:none;padding:0}
.class-teachers li{display:flex;align-items:center;gap:6px;flex-wrap:wrap;padding:4px 0}
.class-teachers button,.class-req button,.class-box button{font:500 .85rem/1 var(--f-body);border:1px solid var(--line);background:var(--paper);color:var(--ink);border-radius:8px;padding:7px 10px;cursor:pointer}
.class-box button.primary{background:var(--accent);border-color:var(--accent);color:var(--paper)}
.unit-nav button.prev,.unit-nav button.next{max-width:30%}
.unit-nav button.next{margin-left:0}
@media (max-width:560px){ .unit-nav{gap:6px} .unit-nav .read-box button{padding:7px 10px} .unit-nav button.prev,.unit-nav button.next{max-width:26%} }

.empty{display:none;color:var(--muted);padding:30px 0}
mark{background:#ffe58a;color:#18233a;border-radius:2px}

@media (max-width:760px){
  .wrap{grid-template-columns:minmax(0,1fr);gap:0}
  .side{display:none}
  .all-btn{display:inline-flex}
}
@media (max-width:860px){
  .wrap{padding-top:12px}
  .unit{padding:4px 16px 18px}
  .unit-nav{margin:-4px -16px 0;padding:8px 16px}
  .controls{margin-left:0;width:100%}
  input[type=search]{flex:1 1 100%;width:auto}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
/* sign-in: the email and code boxes look like the password box; the small links stay links */
.stats-card .signin input[type=email],.stats-card .signin input[inputmode=numeric]{font:inherit;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);width:min(260px,100%)}
.stats-card .signin input[inputmode=numeric]{width:min(170px,100%);letter-spacing:.15em}
.stats-card .signin .link-btn{background:none;border:0;padding:0;box-shadow:none;color:var(--accent)}
.signin-forgot{border-inline-start:3px solid var(--accent-soft);padding-inline-start:10px;margin:4px 0 8px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
/* ✏️ edit mode (administrator) */
body.editing #content{cursor:text}
body.editing .ed-hl{outline:2px dashed var(--accent);outline-offset:2px;border-radius:4px;background:var(--accent-soft)}
.ed-bar{position:fixed;left:50%;bottom:14px;transform:translateX(-50%);z-index:60;display:flex;gap:10px;align-items:center;flex-wrap:wrap;justify-content:center;
  background:var(--paper);border:2px solid var(--accent);border-radius:14px;padding:8px 14px;box-shadow:0 6px 24px rgba(0,0,0,.18);max-width:calc(100vw - 32px);font-size:.92rem}
.ed-box{width:min(720px,100%)}
.ed-box .ed-lab{display:block;font-weight:600;margin:10px 0 4px}
.ed-box textarea{display:block;width:100%;box-sizing:border-box;font:inherit;font-weight:400;margin-top:4px;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);resize:vertical}
.ed-legend{display:flex;flex-wrap:wrap;gap:6px;margin:6px 0}
.ed-slot{background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:2px 10px;font-size:.88rem}
.ed-slot b{color:var(--accent)}
.ed-orig{font-size:.88rem;color:var(--muted);margin:8px 0 0}
.ed-msg{color:#c62828;min-height:1.2em;margin:6px 0 0}
.ed-bar button{font:500 .9rem/1 var(--f-body);border:1px solid var(--accent);background:var(--accent);color:var(--paper);border-radius:8px;padding:8px 14px;cursor:pointer}
.ed-box input.ed-he{display:block;width:100%;box-sizing:border-box;font:600 1.3rem/1.4 var(--f-he);margin-top:4px;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink)}
body.editing .he.ed-hl{outline:2px dashed #c0392b;outline-offset:2px}
.ed-bar.ed-bar-small{left:auto;right:14px;transform:none;padding:6px}
body.editing .ed-find{outline:3px solid #e8a33d;outline-offset:3px;border-radius:4px;background:#fff3d6;transition:background .3s}
.ed-he-row{display:grid;grid-template-columns:auto 1fr 1fr;gap:8px;align-items:center;margin:6px 0}
.ed-he-row b{color:var(--accent);font-size:.9rem}
.ed-he-row input.ed-he{margin:0}
.fixer .marks button.m-none{border-style:dashed}
.fixer .niq-letters{display:flex;flex-wrap:wrap;gap:4px;margin:6px 0;direction:rtl;align-items:center}
.fixer .niq-letters .niq-l{font:600 1.35rem/1.2 var(--f-he);min-width:38px;padding:4px 6px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);cursor:pointer}
.fixer .niq-letters .niq-l.on{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 2px var(--accent) inset}
.fixer details.fx-sec{border:1px solid var(--line);border-radius:8px;padding:0 10px}
.fixer details.fx-sec>summary{cursor:pointer;list-style:none;display:flex;align-items:center;gap:6px;padding:8px 0;font:600 .72rem/1.2 var(--f-body);text-transform:uppercase;letter-spacing:.07em;color:var(--muted)}
.fixer details.fx-sec>summary::-webkit-details-marker{display:none}
.fixer details.fx-sec>summary::before{content:'▸';color:var(--accent);transition:transform .15s}
.fixer details.fx-sec[open]>summary::before{transform:rotate(90deg)}
.fixer details.fx-sec[open]{padding-bottom:10px}
.fixer details.fx-sec>*:not(summary){margin-top:6px}
.niq-pad{margin:6px 0}
.niq-pad .niq-letters{display:flex;flex-wrap:wrap;gap:4px;margin:6px 0;direction:rtl;align-items:center}
.niq-pad .niq-l{font:600 1.35rem/1.2 var(--f-he);min-width:38px;padding:4px 6px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);cursor:pointer}
.niq-pad .niq-l.on{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 2px var(--accent) inset}
.niq-pad .marks{display:flex;flex-wrap:wrap;gap:4px;direction:rtl}
.niq-pad .marks button{font:500 1.15rem/1 var(--f-he);padding:4px 7px;min-width:34px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);cursor:pointer}
.niq-pad .marks button.m-none{border-style:dashed}
/* 👤 My account (My progress): name, password, email */
.acct-row,.acct-code{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin:8px 0}
.acct-row input,.acct-code input{text-transform:none;letter-spacing:normal;width:auto;min-width:9em;flex:0 1 13em}
.acct-code input{min-width:6em;flex:0 0 7em;letter-spacing:.2em}
.acct-lab{display:inline-block;min-width:6.5em;font-weight:600}
.acct-box .class-msg{flex-basis:auto}
/* an account without an email address is asked for one */
.need-mail{position:fixed;left:50%;bottom:16px;transform:translateX(-50%);z-index:60;max-width:min(620px,calc(100vw - 32px));background:var(--paper);color:var(--ink);border:1px solid var(--accent);border-radius:12px;box-shadow:0 8px 28px rgba(0,0,0,.18);padding:10px 14px;display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.95rem}
.need-mail button{font:500 .85rem/1 var(--f-body);border:1px solid var(--line);background:var(--paper);color:var(--ink);border-radius:8px;padding:7px 10px;cursor:pointer}
.need-mail button.primary{background:var(--accent);border-color:var(--accent);color:var(--paper)}