/* Course site — design "ח". Colors: ink #001a24 (TAU logo) · accent #b3541e (only "this week" and the nearest date)
   · unit color per page via --u-ink / --u-line / --u-tint (set by build.py from the course map's color table). */
*{box-sizing:border-box}
body{margin:0;background:#eef1f1;color:#1c2a31;font-family:'Assistant',system-ui,sans-serif;font-size:17px;line-height:1.5}
a{color:#1c2a31;text-decoration:none}
a:hover{color:#b3541e}
a:focus-visible,summary:focus-visible{outline:3px solid #b3541e;outline-offset:2px;border-radius:8px}
.ln{border-bottom:1px solid #cfd6d9}
.fr{font-family:'Frank Ruhl Libre',serif}
.wrap{max-width:1120px;margin:0 auto;padding:0 40px}
.card{background:#ffffff;border-radius:22px;box-shadow:0 1px 2px rgba(0,26,36,.05),0 6px 24px rgba(0,26,36,.04)}

/* header */
.hdr{display:flex;align-items:center;gap:22px;padding:24px 0 22px;position:relative}
.hdr .logo{height:52px;width:auto;display:block}
.hdr .sep{width:1px;align-self:stretch;background:#d5dcde}
.home{display:block;color:inherit}
.home:hover{color:inherit}
.ttl1{display:block;font-size:21px;font-weight:700;color:#001a24;line-height:1.2}
.ttl2{display:block;font-size:14px;color:#56656d;margin-top:1px}
.gen{display:flex;gap:4px;font-size:15px;margin-inline-start:auto}
.gen a{min-height:44px;display:flex;align-items:center;padding:0 14px;border-radius:10px}
.gen a:hover{background:#e3e8e9;color:#001a24}
.mmenu{display:none}

/* semester menu */
.sheet{margin-top:4px;overflow:hidden}
.menu{padding:20px 32px 18px;background:#f5f7f7;border-bottom:1px solid #e3e7e9}
.mrow{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.unit{display:flex;flex-direction:column;gap:12px}
.ul{display:flex;align-items:flex-end;gap:10px;font-size:13px;font-weight:600;color:#3f4e56;padding-bottom:5px;border-bottom:2px solid var(--u);white-space:nowrap;min-height:30px}
.uic{margin-inline-start:auto;color:var(--ui);display:flex}
.uic:empty{display:none}
.wks{display:flex;gap:10px}
.wk{position:relative;display:flex;flex-direction:column;align-items:center;gap:5px;font-size:12.5px;color:#56656d;font-variant-numeric:tabular-nums;width:56px}
.c{width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;overflow:hidden;font-size:15px;font-weight:600;color:#7a878d;background:#ffffff;flex:none;transition:transform .15s}
.c img{width:100%;height:100%;object-fit:cover}
.f{border:1.5px dashed #b5bfc4}
.exam .c{color:#56656d;font-size:13px}
.exam{color:#56656d}
.sel .c{background:#001a24;color:#ffffff;border-color:#001a24}
.sel{color:#001a24;font-weight:700}
.cur .c{box-shadow:0 0 0 3px #f5f7f7,0 0 0 4.5px #b3541e}
.cur{color:#b3541e;font-weight:700}
.sel::before{content:"";position:absolute;top:calc(100% + 11px);left:50%;width:14px;height:14px;background:#ffffff;border-top:1px solid #e3e7e9;border-left:1px solid #e3e7e9;transform:translateX(-50%) rotate(45deg);z-index:1}
a.wk:hover .c{transform:scale(1.05)}
.mpager{display:block}
.mpg,.un,.ufull{display:none}

/* week */
.hero{display:grid;grid-template-columns:minmax(0,1fr) 150px;gap:24px 48px;align-items:center;padding:40px 44px 34px}
.hero.noimg{grid-template-columns:1fr}
.eyebrow{margin:0 0 12px;font-size:15px;font-weight:700;color:#b3541e}
.h1{font-size:68px;font-weight:900;line-height:1;margin:0;color:#001a24;letter-spacing:-.015em}
.sub{margin:10px 0 0;font-size:25px;color:#56656d;font-weight:500}
.unitline{margin:18px 0 0;font-size:14.5px;color:#56656d}
.eng{margin:0;background:var(--u-tint);border-radius:16px;padding:10px 10px 8px}
.eng img{width:100%;height:auto;display:block;border-radius:6px}
.eng figcaption{margin-top:4px;font-size:12px;line-height:1.35;color:#56656d;text-align:center;direction:ltr}
.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(380px,100%),1fr));border-top:1px solid #e9edee}
.mcard{padding:6px 44px 26px}
.mcard+.mcard{border-inline-start:1px solid #e9edee}
.mh{display:flex;align-items:baseline;gap:12px;padding:18px 0 12px;border-bottom:2px solid var(--u-ink)}
.mh h2{margin:0;font-size:30px;font-weight:700;color:var(--u-ink)}
.mh span{color:#56656d;font-size:15px}
.note{margin:14px 0 2px;font-size:15px;color:#56656d}
.mat{display:flex;gap:14px;align-items:center;min-height:60px;padding:8px 0;border-bottom:1px solid #eef1f2}
.mat:last-child{border-bottom:none}
a.mlink:hover .mt,a.mt:hover{color:#b3541e}
.mlink{display:flex;gap:14px;align-items:center;flex:1 1 auto;min-width:0;color:inherit}
.pills{flex:none;display:flex;gap:8px;align-items:center;margin-inline-start:auto}
.pill{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border:1px solid #d5dcde;border-radius:50%;background:#ffffff;color:var(--u-ink)}
.pill svg{width:16px;height:16px}
.pill.purple{background:#efe6fb;border-color:#c9b3ec;color:#6a3fb0}
.pill.yellow{background:#fdf3c8;border-color:#ecd47a;color:#8a6a00}
.pill.blue{background:#e6effb;border-color:#a9c4ec;color:#1f5fae}
.pill:hover{border-color:var(--u-ink);color:var(--u-ink)}
.ic{flex:none;width:42px;height:42px;border-radius:12px;background:var(--u-tint);display:flex;align-items:center;justify-content:center;color:var(--u-ink);overflow:hidden}
.ic.thumb{background:#000000}
.ic img{width:100%;height:100%;object-fit:cover}
.msub{margin:36px 0 0;padding-bottom:8px;border-bottom:1px solid #eef1f2;font-size:14px;font-weight:700;letter-spacing:.02em;color:var(--u-ink)}
.mh+.msub,.note+.msub{margin-top:18px}
.mt{display:block;font-family:'Frank Ruhl Libre',serif;font-size:20px;font-weight:500;line-height:1.25}
.ms{display:block;font-size:15px;color:#56656d}
.ms .ln{color:#56656d}

/* upcoming tasks: a separate card under the week sheet, always about the current week */
.tasks{margin-top:18px;padding:22px 44px 26px}
.tasksh{margin:0 0 14px;font-size:24px;font-weight:700;color:#001a24}
.ng{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(360px,100%),1fr));gap:14px}
.np{display:flex;flex-direction:column;gap:12px;padding:16px 20px 18px;border:1px solid #e3e8e9;border-radius:16px;background:#fcfcfb;color:#1c2a31}
.nph{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding-bottom:10px;border-bottom:1px solid #eef1f2}
.nk{font-size:14px;font-weight:700;color:var(--u-ink);padding-top:4px}
.dl{flex:none;display:flex;align-items:baseline;gap:6px;color:#001a24;white-space:nowrap}
.dl span{font-size:14px;color:#56656d}
.dl b{font-family:'Frank Ruhl Libre',serif;font-size:26px;font-weight:700;line-height:1}
.dl.soon,.dl.soon span{color:#b3541e}
.tl{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.tl li{display:flex;gap:12px;align-items:center}
.tl .ic{width:36px;height:36px;border-radius:10px}
.tli{flex:1 1 auto;display:flex;align-items:center;justify-content:space-between;gap:10px;min-width:0}
.tli .mt{font-size:18px}
a.mt:hover{color:#b3541e}
.tpills{flex:none;display:flex;gap:8px;margin-inline-start:auto}
.ttext{margin:0;font-size:17px;line-height:1.55;color:#1c2a31}
.tgo{align-self:flex-start;font-size:14px;color:#56656d}
.tnote{margin:auto 0 0;padding-top:10px;border-top:1px dashed #dde3e5;font-size:14px;color:#7a878d}
/* course admin page (info_pages in site.json): a few lines and one button */
.info{padding:6px 44px 40px;max-width:760px;font-size:18px;line-height:1.65;color:#1c2a31}
.info p{margin:0 0 14px}
.steps{margin:0 0 26px;padding-inline-start:24px}
.steps li{margin-bottom:8px}
.adm section{padding:22px 0 26px;border-top:1px solid #e9edee}
.adm section:first-child{border-top:none;padding-top:4px}
.adm h2{margin:0 0 12px;font-size:26px;font-weight:700;color:var(--u-ink)}
.adm .pre{margin:4px 0 10px;color:#56656d;font-size:16px}
/* a link out (syllabus, a form): clear, but quieter than a filled button */
.info .go,.np .go{align-self:flex-start;display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 18px;border:1.5px solid var(--u-ink);border-radius:10px;background:#ffffff;color:var(--u-ink);font-weight:600;font-size:16px;text-decoration:none}
.info .go::after,.np .go::after{content:'←'}
.info .go:hover,.np .go:hover{background:var(--u-tint)}
.tasks .nk{font-size:16px}
.tasks .dl span{font-size:16px}
.tasks .dl b{font-size:32px}
.tasks .ttext{font-size:20px}
.tasks .tnote{font-size:16px;color:#5f6d73;line-height:1.7}
.tasks .tnote .ln{color:var(--u-ink);border-bottom-color:currentColor;font-weight:600}

/* week navigation */
.nav{display:flex;justify-content:space-between;gap:12px;padding:12px 28px;border-top:1px solid #e9edee;background:#f5f7f7}
.nav a,.nav span{display:flex;align-items:center;gap:10px;min-height:56px;padding:0 20px;border-radius:16px;font-size:15.5px}
.nav a:hover{color:#001a24;box-shadow:0 0 0 1.5px #001a24 inset}
.nav span{color:#7a878d;border:1.5px dashed #c6ced2}

.foot{display:flex;flex-wrap:wrap;align-items:center;gap:8px 22px;padding:40px 0 56px;font-size:14.5px;color:#56656d}
.flogo{height:30px;width:auto}
.badge{font-weight:700;color:#001a24;white-space:nowrap}

/* TA sign-in (public footer): the password is the full version's folder name */
.tlog summary{list-style:none;cursor:pointer;min-height:44px;display:flex;align-items:center;text-decoration:underline;text-decoration-color:#cfd6d9;text-underline-offset:3px}
.tlog summary::-webkit-details-marker{display:none}
.tlog summary:hover{color:#001a24}
.tlogf{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:4px}
.tlogf input{font:inherit;font-size:16px;height:44px;width:160px;padding:0 12px;border:1px solid #cfd6d9;border-radius:10px;background:#ffffff;color:#1c2a31;direction:ltr}
.tlogf button{font:inherit;font-size:15px;height:44px;padding:0 18px;border:0;border-radius:10px;background:#001a24;color:#ffffff;cursor:pointer}
.terr{color:#b3541e;font-size:14px}

@media (max-width:640px){
  .wrap{padding:0 12px}
  .hdr{padding:10px 4px;gap:12px}
  .hdr .logo{height:34px}
  .hdr .sep,.gen{display:none}
  .ttl1{font-size:17px}
  .ttl2{font-size:13px}
  .mmenu{display:block;margin-inline-start:auto}
  .mmenu summary{list-style:none;width:44px;height:44px;border-radius:50%;background:#ffffff;display:flex;align-items:center;justify-content:center;cursor:pointer}
  .mmenu summary::-webkit-details-marker{display:none}
  .mmenu nav{position:absolute;inset-inline:4px;top:calc(100% - 2px);z-index:5;background:#ffffff;border-radius:16px;box-shadow:0 10px 30px rgba(0,26,36,.16);padding:6px;display:flex;flex-direction:column}
  .mmenu nav a{min-height:48px;display:flex;align-items:center;padding:0 14px;border-radius:10px}
  .sheet{margin-top:4px;border-radius:20px}
  /* semester menu on the phone: one unit at a time, arrows page between units (right = back, left = forward) */
  .menu{padding:16px 6px 12px}
  .mpager{touch-action:pan-y;display:grid;grid-template-columns:48px minmax(0,1fr) 48px;align-items:center}
  .mpg{display:flex;align-items:center;justify-content:center;width:48px;height:48px;border:0;border-radius:50%;background:transparent;color:#001a24;cursor:pointer;padding:0}
  .mpg svg{width:28px;height:28px;stroke-width:2}
  .mpg:active{background:#e3e8e9}
  .mpg:disabled{color:#c6ced2;cursor:default;background:transparent}
  .sel::before{display:none}
  .mrow{display:block}
  .unit{display:none}
  .unit.on{display:flex;flex-direction:column;align-items:center;gap:12px}
  .ul{display:block;font-size:15px;font-weight:700;color:var(--ui);white-space:normal;text-align:center;border-bottom-width:2px;padding-bottom:6px;min-height:0}
  .uic{display:inline-flex;vertical-align:middle;margin-inline-start:8px}
  .un,.ufull{display:inline}
  .ush{display:none}
  .wks{gap:14px;justify-content:center}
  .wk{width:58px;font-size:12.5px}
  .c{width:54px;height:54px;font-size:15px}
  .exam .c{font-size:13px}
  .in-f{animation:uin-f .22s ease-out}
  .in-b{animation:uin-b .22s ease-out}
  @keyframes uin-f{from{opacity:0;transform:translateX(-28px)}to{opacity:1;transform:none}}
  @keyframes uin-b{from{opacity:0;transform:translateX(28px)}to{opacity:1;transform:none}}
  .hero{grid-template-columns:minmax(0,1fr) 86px;gap:14px;padding:22px 18px;align-items:end}
  .eng{padding:8px 8px 4px;border-radius:12px}
  .eng figcaption,.unitline{display:none}
  .h1{font-size:40px}
  .sub{font-size:17px}
  .mcard{padding:4px 18px 14px}
  .mcard+.mcard{border-inline-start:none;border-top:1px solid #e9edee}
  .mh h2{font-size:26px}
  .mt{font-size:18.5px}
  .pill{width:44px;height:44px}
  .tasks{padding:18px 16px 20px;margin-top:12px;border-radius:20px}
  .tasksh{font-size:21px}
  .np{padding:14px 14px 16px}
  .info{padding:4px 18px 26px;font-size:17px}
  .tasks .dl b{font-size:28px}
  .tasks .ttext{font-size:19px}
  .dl b{font-size:22px}
  .nav{flex-direction:column;gap:4px;padding:8px 10px}
  .nav a,.nav span{justify-content:center}
  .nav i{display:none}
  .foot{justify-content:center;text-align:center;padding:28px 0 40px}
}

/* the portrait toy (week 1: Bernoulli sneezes with probability p) */
.eng{position:relative}
.eng.egg{cursor:pointer;-webkit-tap-highlight-color:transparent}
.port{position:relative;display:block}
.eng.egg .port>img{transform-origin:50% 85%}
.sneeze{position:absolute;inset:0;width:100%;height:100%;opacity:0;pointer-events:none;transition:opacity .12s}
.sneezing .sneeze{opacity:1}
.sneezing .port{animation:sneeze .7s ease-out .38s}
.yawning .port>img{animation:yawn 1.2s ease-in-out}
@keyframes sneeze{0%{transform:none}22%{transform:rotate(-4deg) scale(1.03) translateY(-3px)}34%{transform:rotate(5deg) scale(.97) translateY(4px)}46%{transform:rotate(-2deg)}62%{transform:rotate(1.5deg)}100%{transform:none}}
@keyframes yawn{0%{transform:none}40%{transform:rotate(-3deg) scaleY(1.04)}70%{transform:rotate(-2deg) scaleY(1.02)}100%{transform:none}}
.bubble{position:absolute;z-index:4;top:calc(100% + 10px);inset-inline-end:0;width:min(260px,72vw);padding:12px 14px;background:#ffffff;border:1px solid #d5dcde;border-radius:14px;box-shadow:0 8px 24px rgba(0,26,36,.12);font-family:'Frank Ruhl Libre',serif;font-size:16px;line-height:1.4;color:#001a24;text-align:start;opacity:0;transform:translateY(-4px);transition:opacity .25s,transform .25s;pointer-events:none}
.bubble.on{opacity:1;transform:none}
.bubble::before{content:"";position:absolute;top:-7px;inset-inline-end:28px;width:12px;height:12px;background:#ffffff;border-top:1px solid #d5dcde;border-inline-start:1px solid #d5dcde;transform:rotate(45deg)}
.bubble small{display:block;margin-top:6px;font-family:'Assistant',sans-serif;font-size:12.5px;color:#56656d}
@media (prefers-reduced-motion:reduce){.sneezing .port,.yawning .port>img{animation:none}}

/* the site's own media player (no download button) */
.player{padding:22px 44px 34px;margin-top:4px}
.back{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 14px 0 18px;margin-inline-start:-14px;border-radius:12px;font-size:15.5px}
.back:hover{background:#eef1f1;color:#001a24}
.ptitle{margin:10px 0 18px;font-size:30px;font-weight:700;color:#001a24;line-height:1.25}
.player video{display:block;width:100%;max-height:72vh;border-radius:14px;background:#000}
.player audio{display:block;width:100%;margin-top:6px}
@media (max-width:640px){.player{padding:14px 16px 22px}.ptitle{font-size:22px}}