/* Layout: header with three tabs; page tab = Vilna page centred, drawer slides in from the left edge (RTL) */
:root{
  --paper:#fbf8f1; --bg:#efeadf; --ink:#26221b; --muted:#6f685b; --line:#d9d1c1; --card:#fffdf8;
  --accent:#7a3b1d; --accent-ink:#fff;
  --L-s:rgba(128,124,112,.30); --L-a:rgba(98,88,196,.28); --L-t:rgba(30,140,104,.26); --L-m:rgba(14,104,82,.42);
  --L-s-b:#8a857a; --L-a-b:#6b62c8; --L-t-b:#23906c; --L-m-b:#0f6e56;
  --sel:rgba(233,150,22,.55); --sel-line:#c97b00;
  --sg0:#0f6e56; --sg1:#b8491b; --sg2:#a8780a; --sg3:#5148c0; --sg4:#1d6fae; --sg5:#a62a63;
  --pill:#4c43a8; --pill-ink:#fff;
  --main:"Frank Ruhl Libre","David","Times New Roman",serif;
  --rashi:"Noto Rashi Hebrew","Frank Ruhl Libre",serif;
  --ui:"Assistant","Segoe UI",Arial,sans-serif;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#1e1c18; --bg:#151411; --ink:#ece6d8; --muted:#a69e8d; --line:#3a362e; --card:#24221d;
  --accent:#e0a37c; --accent-ink:#1a1612;
  --L-s:rgba(170,165,150,.22); --L-a:rgba(150,140,240,.26); --L-t:rgba(70,200,150,.22); --L-m:rgba(60,190,150,.34);
  --L-s-b:#a59f91; --L-a-b:#a29bf0; --L-t-b:#4cc39c; --L-m-b:#5fd0ac;
  --sel:rgba(240,160,40,.45); --sel-line:#f0a028; --pill:#8a80ea; --pill-ink:#14121c;
  --sg0:#5fd0ac; --sg1:#f08a5d; --sg2:#e6b84a; --sg3:#a29bf0; --sg4:#6fb4ea; --sg5:#ec7cab; color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#1e1c18; --bg:#151411; --ink:#ece6d8; --muted:#a69e8d; --line:#3a362e; --card:#24221d;
  --accent:#e0a37c; --accent-ink:#1a1612;
  --L-s:rgba(170,165,150,.22); --L-a:rgba(150,140,240,.26); --L-t:rgba(70,200,150,.22); --L-m:rgba(60,190,150,.34);
  --L-s-b:#a59f91; --L-a-b:#a29bf0; --L-t-b:#4cc39c; --L-m-b:#5fd0ac;
  --sel:rgba(240,160,40,.45); --sel-line:#f0a028; --pill:#8a80ea; --pill-ink:#14121c;
  --sg0:#5fd0ac; --sg1:#f08a5d; --sg2:#e6b84a; --sg3:#a29bf0; --sg4:#6fb4ea; --sg5:#ec7cab; color-scheme:dark}

*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font-family:var(--ui);font-size:16px;line-height:1.55}
a{color:var(--accent)}
button{font:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--sel-line);outline-offset:2px}

.top{position:sticky;top:0;z-index:20;display:flex;flex-wrap:wrap;gap:8px 24px;align-items:center;justify-content:space-between;
  padding:10px 16px;background:var(--paper);border-bottom:1px solid var(--line)}
.brand{display:flex;gap:10px;align-items:center}
.mark{display:block;width:40px;height:40px;flex:none}
.site{font-size:.78rem;color:var(--muted);letter-spacing:.04em}
h1{font-family:var(--main);font-size:1.45rem;margin:0;line-height:1.1}
.tabs{display:flex;gap:4px}
.tabs a{padding:6px 14px;border-radius:999px;text-decoration:none;color:var(--ink);border:1px solid transparent}
.tabs a.on{background:var(--ink);color:var(--paper)}
.tabs a:not(.on):hover{border-color:var(--line)}

main{max-width:1180px;margin:0 auto;padding-inline:16px;padding-block:12px 40px}
.tab{display:none}.tab.on{display:block}
.toolbar{display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center;margin:4px 0 6px}
.toolbar>button{padding:4px 12px;border-radius:999px;border:1px solid var(--line);background:var(--card);color:var(--ink)}
.tog{display:flex;gap:6px;align-items:center}
.legend{display:flex;flex-wrap:wrap;gap:4px 12px;font-size:.85rem;color:var(--muted)}
.sw{display:inline-block;width:16px;height:11px;border-radius:3px;vertical-align:middle;margin-left:4px;border:1px solid}
.sw.L-s{background:var(--L-s);border-color:var(--L-s-b)}.sw.L-a{background:var(--L-a);border-color:var(--L-a-b)}
.sw.L-t{background:var(--L-t);border-color:var(--L-t-b)}.sw.L-m{background:var(--L-m);border-color:var(--L-m-b)}
.pill{display:inline-block;font-style:normal;font-size:.72rem;font-weight:600;padding:0 8px;border-radius:999px;background:var(--pill);color:var(--pill-ink);margin-left:4px;vertical-align:1px}
.hint{color:var(--muted);font-size:.9rem;margin:2px 0 12px;max-width:70ch}

/* the daf */
.daf-wrap{background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:18px 32px;overflow-x:auto;display:flex;justify-content:safe center;min-height:300px;position:relative;max-width:100%}
#daf{color:var(--ink);position:relative;flex:none}
.tab{min-width:0}
#daf .u{border-radius:3px;cursor:pointer;transition:background .15s, box-shadow .15s;-webkit-box-decoration-break:clone;box-decoration-break:clone}
.layers #daf .u.L-s{background:var(--L-s)}.layers #daf .u.L-a{background:var(--L-a)}
.layers #daf .u.L-t{background:var(--L-t)}.layers #daf .u.L-m{background:var(--L-m)}
#daf .cm{cursor:pointer;border-radius:2px}
#daf .cm b{font-weight:600}
#daf .tdh{font-family:var(--main);font-weight:700}
#daf .sel,#daf .sel .u{background:var(--sel)!important;box-shadow:0 0 0 1px var(--sel-line)}
.dim #daf .u:not(.sel):not(.sel .u),.dim #daf .cm:not(.sel){opacity:.45}

/* sugyot: a label at each start, a coloured underline per sugya, chips above the page */
.sg-0{--sg:var(--sg0)}.sg-1{--sg:var(--sg1)}.sg-2{--sg:var(--sg2)}.sg-3{--sg:var(--sg3)}.sg-4{--sg:var(--sg4)}.sg-5{--sg:var(--sg5)}
.sg-layer{position:absolute;inset:0;pointer-events:none;z-index:2}
.sg-bar{position:absolute;width:5px;border-radius:2px;background:var(--sg);opacity:.85}
.sg-lab{position:absolute;width:20px;height:20px;padding:0;border:2px solid var(--paper);border-radius:50%;background:var(--sg);color:#fff;
  font:700 11px/16px var(--ui);text-align:center;pointer-events:auto;cursor:pointer}
body:not(.sugyot) .sg-layer{display:none}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:6px 0 4px}
.chip{display:flex;align-items:baseline;gap:6px;border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:999px;padding:3px 12px;font-size:.88rem;max-width:100%}
.chip .cs{color:var(--muted);font-size:.82rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:34ch}
.dot{display:inline-block;width:10px;height:10px;border-radius:50%;background:var(--sg);align-self:center}

/* drawer */
.drawer{position:fixed;top:0;bottom:0;left:0;width:min(440px,100vw);background:var(--card);border-right:1px solid var(--line);
  box-shadow:4px 0 24px rgba(0,0,0,.18);transform:translateX(-105%);transition:transform .22s ease;z-index:40;display:flex;flex-direction:column;
  padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
.drawer.open{transform:none}
.dr-head{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--line)}
.dr-head h2{margin:0;font-family:var(--main);font-size:1.2rem}
.x{border:0;background:transparent;color:var(--muted);font-size:1.1rem;padding:4px 8px}
.dr-body{overflow:auto;padding:12px 16px 32px}
.dr-sec{margin:14px 0 6px;font-size:.8rem;color:var(--muted);letter-spacing:.05em;border-bottom:1px solid var(--line);padding-bottom:2px}
.gem{font-family:var(--main);font-size:1.12rem;line-height:1.9}
.gem .u{border-radius:3px;padding:1px 2px;-webkit-box-decoration-break:clone;box-decoration-break:clone}
.gem .u.L-s{background:var(--L-s)}.gem .u.L-a{background:var(--L-a)}.gem .u.L-t{background:var(--L-t)}.gem .u.L-m{background:var(--L-m)}
.gem .pill{font-family:var(--ui)}
.who{font-family:var(--ui);font-size:.75rem;color:var(--muted)}
.cmt{font-family:var(--main);font-size:1.05rem;line-height:1.9;margin:6px 0;padding-right:10px;border-right:3px solid var(--sel-line)}
.cmt b{font-family:var(--main);font-weight:700}
.hal{border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin:8px 0;background:var(--paper)}
.hal h3{margin:0 0 4px;font-size:1rem;font-family:var(--main)}
.hal .src{font-family:var(--main);font-size:1.02rem;margin:4px 0}
.hal .sum{font-size:.92rem;margin:6px 0}
.hal .links{display:flex;gap:12px;font-size:.88rem}
.crumbs{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.crumbs button{border:1px solid var(--line);background:var(--paper);color:var(--ink);border-radius:999px;padding:2px 10px;font-size:.85rem}

/* tree */
.b{border:1px solid;border-radius:10px;padding:6px 10px 7px;margin:6px 0;min-width:0}
.b.k-s{border-color:var(--L-s-b);background:var(--L-s)}.b.k-a{border-color:var(--L-a-b);background:var(--L-a)}
.b.k-t{border-color:var(--L-t-b);background:var(--L-t)}.b.k-m{border-color:var(--L-m-b);background:var(--L-m)}
.b>.bh{display:flex;flex-wrap:wrap;gap:4px 8px;align-items:baseline;cursor:default}
.b.p>.bh{cursor:pointer}
.b .tt{font-family:var(--main);font-weight:700;font-size:1.05rem}
.b .ss{color:var(--muted);font-size:.9rem}
.b .aim{font-weight:600;color:var(--accent);font-size:.95rem}
.b .aim::before{content:"← ";color:var(--muted);font-weight:400}
.b .go{font-size:.82rem;margin-inline-start:auto;border:0;background:transparent;color:var(--accent);text-decoration:underline;padding:0}
.b .tg{display:inline-block;width:14px;color:var(--muted);transition:transform .15s}
.b.c>.bh .tg{transform:rotate(90deg)}
.b.c>.kids{display:none}
.b.flash{animation:flash 1.4s ease}
@keyframes flash{0%,40%{box-shadow:0 0 0 3px var(--sel-line)}100%{box-shadow:none}}

/* sages */
.sages-scroll{overflow-x:auto;background:var(--paper);border:1px solid var(--line);border-radius:8px}
#sages{display:block;min-width:820px;width:100%;height:auto}
#sages .lane-label{font:600 13px var(--ui);fill:var(--muted)}
#sages .tick{font:12px var(--ui);fill:var(--muted)}
#sages .grid{stroke:var(--line);stroke-width:1}
#sages .node rect{fill:var(--card);stroke:var(--ink);stroke-width:.8;cursor:pointer}
#sages .node text{font:600 13px var(--ui);fill:var(--ink);pointer-events:none}
#sages .node.on rect{fill:var(--sel);stroke:var(--sel-line);stroke-width:1.5}
#sages .edge{fill:none;stroke:var(--L-a-b);stroke-width:1.4;opacity:.45}
#sages .edge.to-stam{stroke:var(--L-s-b);stroke-dasharray:4 3}
#sages .edge.hl{opacity:1;stroke-width:2.4;stroke:var(--sel-line)}
#sages .edge.fade{opacity:.08}
.sage-info{margin-top:12px;min-height:3em}
.sage-info h3{margin:0 0 4px;font-family:var(--main)}
.sage-info ul{margin:4px 0;padding-inline-start:18px}

.foot{max-width:1180px;margin:0 auto;padding-inline:16px;padding-block:8px 28px;color:var(--muted);font-size:.8rem}
@media (prefers-reduced-motion:reduce){.drawer,#daf .u,.b .tg{transition:none}.b.flash{animation:none}}

/* focus daf navigation */
.dafnav{display:flex;align-items:center;gap:6px}
.arrow{width:30px;height:30px;border-radius:50%;border:1px solid var(--line);background:var(--card);color:var(--ink);font:700 1.2rem/1 var(--main);padding:0}
.arrow:disabled{opacity:.35;cursor:not-allowed}
.range{color:var(--muted);font-size:.85rem;margin-inline-start:4px}
.amudim{display:inline-flex;flex-wrap:wrap;gap:4px}
.amudim button{font-family:var(--main);font-size:1.05rem;padding:2px 12px;border-radius:8px;border:1px solid var(--line);background:var(--card);color:var(--muted)}
.amudim button.focus{color:var(--ink);border:2px solid var(--accent);font-weight:700}
.amudim button.on{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
#daf .out{opacity:.32}
#daf .hadran{opacity:.6;font-weight:700}
.unit{border:1px solid var(--line);border-radius:14px;padding:8px 10px;margin:10px 0;background:var(--card)}
.unit>.uh{display:flex;flex-wrap:wrap;gap:4px 10px;align-items:baseline;margin:2px 2px 4px}
.unit>.uh .tt{font-family:var(--main);font-weight:700;font-size:1.15rem}
.unit>.uh .ur{color:var(--muted);font-size:.85rem}
.unit>.uh .aim{font-weight:600;color:var(--accent)}
.sgn{display:inline-block;font-size:.72rem;font-weight:700;padding:0 8px;border-radius:999px;background:var(--sg);color:#fff;margin-left:2px}

/* one dropdown per mishnah */
.mdrop{position:relative}
.mdrop>summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:6px;padding:3px 12px;border:1px solid var(--line);
  border-radius:999px;background:var(--card);font-family:var(--main);font-size:.98rem;white-space:nowrap}
.mdrop>summary::-webkit-details-marker{display:none}
.mdrop[open]>summary{border-color:var(--accent)}
.mdrop .caret{font-size:.7rem;color:var(--muted)}
.mdrop .menu{position:absolute;top:calc(100% + 4px);inset-inline-start:0;z-index:30;min-width:260px;max-width:min(380px,calc(100vw - 32px));
  background:var(--card);border:1px solid var(--line);border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.18);padding:6px}
.menu-aim{font-size:.82rem;color:var(--accent);font-weight:600;padding:2px 8px 6px;border-bottom:1px solid var(--line);margin-bottom:4px}
.mi{display:flex;align-items:baseline;gap:8px;width:100%;text-align:start;border:0;background:transparent;color:var(--ink);padding:5px 8px;border-radius:6px}
.mi:hover,.mi:focus-visible{background:var(--bg)}
.mi .dot{align-self:center;flex:none}
.mi-n{font-weight:600;font-size:.85rem;white-space:nowrap}
.mi-a{color:var(--muted);font-size:.85rem}

/* guided tour */
.tour-btn{border:0;border-radius:999px;padding:7px 18px;background:var(--accent);color:var(--accent-ink);font:700 1rem var(--ui);
  box-shadow:0 2px 0 rgba(0,0,0,.15),0 0 0 3px color-mix(in srgb,var(--accent) 25%,transparent)}
.tour-btn::before{content:"▶ ";font-size:.8em}
.touring .tour-btn::before{content:"■ "}
.tour-spot{position:fixed;z-index:60;pointer-events:none;border:3px solid var(--sel-line);border-radius:10px;
  box-shadow:0 0 0 4px color-mix(in srgb,var(--sel-line) 30%,transparent),0 0 24px color-mix(in srgb,var(--sel-line) 45%,transparent);
  transition:top .55s cubic-bezier(.3,.7,.3,1),left .55s cubic-bezier(.3,.7,.3,1),width .55s cubic-bezier(.3,.7,.3,1),height .55s cubic-bezier(.3,.7,.3,1),opacity .2s}
.tour-spot.none{opacity:0}
.tour-card{position:fixed;z-index:70;width:min(360px,calc(100vw - 24px));background:var(--card);color:var(--ink);border:2px solid var(--accent);
  border-radius:14px;box-shadow:0 12px 36px rgba(0,0,0,.28);padding:12px 14px;top:80px;left:12px;
  transition:top .45s cubic-bezier(.3,.7,.3,1),left .45s cubic-bezier(.3,.7,.3,1)}
.tc-head{display:flex;align-items:baseline;gap:8px}
.tc-head h2{margin:0;font-family:var(--main);font-size:1.15rem;flex:1}
.tc-step{font-size:.78rem;color:var(--muted);white-space:nowrap}
.tc-text{font-size:1rem;line-height:1.65;margin:8px 0 10px}
.tc-text b{color:var(--accent)}
.tc-nav{display:flex;justify-content:space-between;gap:8px}
.tc-nav button{border:1px solid var(--line);background:var(--paper);color:var(--ink);border-radius:999px;padding:5px 14px;font-weight:600}
.tc-nav button.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.tc-nav button:disabled{opacity:.35;cursor:default}
.tour-hl{position:relative}
#daf .seg.tour-hl .u{box-shadow:0 0 0 1px var(--sel-line)}
@media (prefers-reduced-motion:reduce){.tour-spot,.tour-card{transition:none}}
/* tour visuals: a small thumbnail beside the text; click to enlarge inside the card */
.tc-body{display:flex;gap:10px;align-items:flex-start;margin:8px 0 10px}
.tc-body .tc-text{margin:0;flex:1;min-width:0}
.tc-fig{margin:0;flex:none;width:92px;text-align:center}
.tc-imgbtn{padding:0;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--paper);display:block;width:100%;cursor:zoom-in}
.tc-imgbtn img{display:block;width:100%;height:auto}
.tc-fig figcaption{font-size:.7rem;color:var(--muted);line-height:1.3;margin-top:3px}
.tour-card.big{width:min(520px,calc(100vw - 24px))}
.tour-card.big .tc-body{flex-direction:column}
.tour-card.big .tc-fig{width:100%}
.tour-card.big .tc-imgbtn{cursor:zoom-out}
.tour-card.big .tc-fig figcaption{font-size:.85rem}
#tree .b.tour-hl{box-shadow:0 0 0 2px var(--sel-line)}
/* topic picture at the top of the detail window: small beside its caption, full width on click */
.dr-fig{display:flex;gap:10px;align-items:center;margin:8px 0 4px;padding:6px;border:1px solid var(--line);border-radius:10px;background:var(--paper)}
.dr-imgbtn{flex:none;width:96px;padding:0;border:0;border-radius:6px;overflow:hidden;background:transparent;cursor:zoom-in}
.dr-imgbtn img{display:block;width:100%;height:auto}
.dr-fig figcaption{font-size:.88rem;color:var(--ink);line-height:1.45}
.dr-fig.big{flex-direction:column;align-items:stretch}
.dr-fig.big .dr-imgbtn{width:100%;cursor:zoom-out}

.bart-sec .cmt{border-right-color:var(--L-m-b)}
.src-link{font-size:.85rem;display:inline-block;margin:2px 0 6px}
.b .bart-sec{padding:4px 6px}
.m-sum{font-size:1rem;margin:4px 0 6px}
details.bart>summary{cursor:pointer;color:var(--accent);font-size:.88rem;margin:2px 0 4px}