/* assets/lesson.css — shared stylesheet for every lesson and reference sheet.
   Tufte-inspired: serif text, wide margins, hairline rules, sidenotes.
   Everything degrades to a plain readable page in print. */

:root{
  --ink:#12120f;
  --paper:#fdfcf8;
  --muted:#6b6b62;
  --rule:#d9d6cc;
  --accent:#8a3324;
  --good:#1c6b3c;
  --bad:#9b2c2c;
  --chip:#f1eee5;
  --mono:ui-monospace,"Cascadia Mono",Consolas,monospace;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,serif;
}
*{box-sizing:border-box}
/* Author styles beat the browser's hidden rule, so state it explicitly: revealers
   and warnings start hidden until their script says otherwise. */
[hidden]{display:none!important}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--serif);font-size:19px;line-height:1.55}
.wrap{max-width:740px;margin:0 auto;padding:52px 26px 90px}

/* ---------- typography ---------- */
h1{font-size:2rem;line-height:1.15;font-weight:400;margin:0 0 .4rem;letter-spacing:-.01em}
h2{font-size:1.25rem;font-weight:600;margin:2.6rem 0 .6rem;border-bottom:1px solid var(--rule);padding-bottom:.35rem}
h3{font-size:1.03rem;font-weight:600;margin:1.8rem 0 .4rem;font-variant:small-caps;letter-spacing:.04em}
p{margin:0 0 1rem}
a{color:var(--accent);text-underline-offset:2px}
ul,ol{margin:0 0 1rem;padding-left:1.3rem}
li{margin:.3rem 0}
small,.small{font-size:15px}
hr{border:0;border-top:1px solid var(--rule);margin:2.4rem 0}
.eyebrow{font-family:var(--mono);font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:0 0 .7rem}
.lede{font-size:1.06rem;color:#33332d;margin-bottom:1.6rem}
.sub{color:var(--muted);font-size:17px}
.meta{font-size:14px;color:var(--muted);font-family:var(--mono)}
.hinglish{font-size:16px;background:#f7f4ec;border-left:3px solid var(--chip);padding:.6rem .8rem;margin:0 0 1.2rem;color:#3d3d36}
blockquote{margin:1.2rem 0;padding:0 0 0 1rem;border-left:2px solid var(--rule);color:#3d3d36;font-style:italic}
code,kbd{font-family:var(--mono);font-size:.86em}
code{background:var(--chip);padding:.08em .3em;border-radius:3px}
pre{background:var(--chip);border:1px solid var(--rule);border-radius:6px;padding:.7rem .8rem;overflow-x:auto;font-size:14.5px;line-height:1.5;margin:0 0 1rem}
pre code{background:none;padding:0}
kbd{background:var(--chip);border:1px solid var(--rule);border-bottom-width:2px;border-radius:4px;padding:.06em .34em}

/* ---------- sidenotes ---------- */
aside.note{font-size:15.5px;line-height:1.4;color:var(--muted);margin:0 0 1.1rem;padding-left:.9rem;border-left:2px solid var(--chip)}
aside.note b{color:#3d3d36}
figure{margin:1.6rem 0}
figcaption{font-size:14.5px;color:var(--muted);margin-top:.4rem}
@media (min-width:1180px){
  .wrap{margin-left:14vw}
  aside.note{float:right;clear:right;width:250px;margin:0 -300px 1rem 0;padding-left:0;border-left:0;border-top:1px solid var(--rule);padding-top:.5rem}
}

/* ---------- chunk bank ---------- */
.chunks{display:grid;gap:.55rem;margin:1.1rem 0}
.chunk{display:flex;flex-wrap:wrap;gap:.6rem;align-items:baseline;background:#fff;border:1px solid var(--rule);border-left:3px solid var(--accent);border-radius:0 6px 6px 0;padding:.55rem .75rem}
.chunk p{margin:0;flex:1 1 300px}
.chunk .why{flex:0 0 100%;font-size:15px;color:var(--muted);font-style:italic}
.chunk .say{flex:0 0 auto}

/* ---------- buttons ---------- */
.say{font-family:var(--mono);font-size:13px;padding:.18rem .55rem;background:var(--chip);border:1px solid var(--rule);border-radius:999px;cursor:pointer;white-space:nowrap}
.say:hover{background:#e9e5d8}
.say::before{content:"\1F50A "}
.mic{font-family:var(--serif);font-size:16px;padding:.45rem 1rem;background:var(--ink);color:#fff;border:0;border-radius:999px;cursor:pointer}
.mic:hover{background:#33332d}
.mic[disabled]{opacity:.45;cursor:default}
.timer,.check,.clear,.reveal{font-family:var(--serif);font-size:15px;padding:.35rem .8rem;background:#fff;border:1px solid var(--rule);border-radius:999px;cursor:pointer}
.timer:hover,.check:hover,.clear:hover,.reveal:hover{border-color:var(--ink)}
button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ---------- drills ---------- */
.drill{background:#fff;border:1px solid var(--rule);border-radius:8px;padding:1rem 1.1rem;margin:1rem 0}
.drill .target{font-size:1.05rem;margin:0 0 .3rem}
.drill .target::before{content:"\201C";color:var(--muted)}
.drill .target::after{content:"\201D";color:var(--muted)}
.status{font-size:15px;color:var(--muted);margin:.55rem 0 0;min-height:1.25em}
.heard{display:inline-block;font-family:var(--mono);font-size:15px;background:var(--chip);border-radius:4px;padding:.3rem .55rem;margin-bottom:.4rem}
.score{font-weight:700}
.score.good{color:var(--good)}
.score.bad{color:var(--bad)}
.done-flag{font-family:var(--mono);font-size:12px;color:var(--good);border:1px solid var(--good);border-radius:999px;padding:.1rem .5rem;margin-left:.5rem;display:none}
.drill.passed .done-flag{display:inline-block}
.hint{display:block;font-size:15.5px;color:#44443c;background:#f7f4ec;border:1px dashed var(--rule);border-radius:6px;padding:.55rem .8rem}
.hint b{font-variant:small-caps}

/* ---------- quizzes ---------- */
.quiz{border-top:1px solid var(--rule);padding-top:1rem;margin:2.4rem 0}
.opts{list-style:none;padding:0;margin:.9rem 0 0}
.opts button{display:block;width:100%;text-align:left;font-family:var(--serif);font-size:17px;line-height:1.4;padding:.65rem .85rem;margin:0 0 .5rem;background:#fff;border:1px solid var(--rule);border-radius:6px;cursor:pointer}
.opts button:hover:not(:disabled){border-color:var(--ink);background:#fffdf5}
.opts button:disabled{cursor:default;opacity:.9}
.opts button.right{border-color:var(--good);background:#eef7f0}
.opts button.wrong{border-color:var(--bad);background:#fbeeee}
.verdict{display:none;margin-top:.7rem;padding:.7rem .9rem;background:#fff;border-left:3px solid var(--rule);font-size:16.5px}
.verdict.show{display:block}
.verdict.right{border-left-color:var(--good)}
.verdict.wrong{border-left-color:var(--bad)}

/* ---------- word-order builder ---------- */
.slot{min-height:2.6rem;border:1px dashed var(--rule);background:#fffdf5;border-radius:6px;padding:.45rem .6rem;font-size:17px;margin:0 0 .6rem}
.builder{display:flex;flex-wrap:wrap;gap:.4rem;margin:0 0 .6rem}
.builder .w{font-family:var(--serif);font-size:16px;padding:.3rem .6rem;background:#fff;border:1px solid var(--rule);border-radius:6px;cursor:pointer}
.builder .w:hover{border-color:var(--ink)}
.builder .w.used{opacity:.22;pointer-events:none}

/* ---------- sentence-stress widget ---------- */
.stressline{display:flex;flex-wrap:wrap;gap:.35rem;align-items:baseline;margin:0 0 .7rem}
.sw{font-family:var(--serif);font-size:1.06rem;padding:.18rem .5rem;background:#fff;border:1px dashed var(--rule);border-radius:6px;cursor:pointer;line-height:1.3}
.sw:hover{border-color:var(--ink)}
.sw.hit{background:#fdf1e6;border-style:solid;border-color:var(--accent);font-weight:700;text-transform:uppercase;letter-spacing:.02em}
.stress.passed .stressline{background:#f4faf6;border-radius:6px}

/* ---------- transcript / listening script ---------- */
.script{margin:1rem 0}
.script p{margin:0 0 .45rem;font-family:var(--mono);font-size:15px;line-height:1.45;background:#fff;border:1px solid var(--rule);border-left:3px solid var(--rule);border-radius:0 6px 6px 0;padding:.45rem .65rem}
/* readable variant: serif, larger, for scripts meant to be read aloud rather than scanned */
.script.readable p{font-family:var(--serif);font-size:17px;line-height:1.6;padding:.6rem .7rem}
.listen-note{font-size:15.5px;color:var(--muted)}
.listen-note b{color:#3d3d36}

/* ---------- hub (index.html) ---------- */
.cards{display:grid;gap:.7rem;margin:1rem 0}
@media (min-width:720px){.cards.two{grid-template-columns:1fr 1fr}}
.card{display:block;text-decoration:none;color:inherit;background:#fff;border:1px solid var(--rule);border-left:3px solid var(--accent);border-radius:0 8px 8px 0;padding:.85rem .95rem}
.card:hover{border-color:var(--ink)}
.card .t{display:block;font-size:1.08rem;font-weight:600;margin-bottom:.15rem}
.card .d{display:block;font-size:15.5px;color:var(--muted)}
.card .m{display:block;font-family:var(--mono);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-top:.4rem}
.card.now{border-left-color:var(--good)}
.steps{counter-reset:s;list-style:none;padding:0;margin:1rem 0}
.steps li{counter-increment:s;position:relative;padding-left:2.2rem;margin:.6rem 0}
.steps li::before{content:counter(s);position:absolute;left:0;top:.15rem;width:1.55rem;height:1.55rem;border-radius:50%;background:var(--chip);color:#3d3d36;font-family:var(--mono);font-size:12px;display:flex;align-items:center;justify-content:center}

/* ---------- tables & footer ---------- */
table.data{width:100%;border-collapse:collapse;font-size:16.5px;margin:1rem 0}
table.data th,table.data td{border-bottom:1px solid var(--rule);padding:.45rem .55rem;text-align:left;vertical-align:top}
table.data th{font-weight:400;font-variant:small-caps;letter-spacing:.04em;color:var(--muted)}
.lessonfoot{margin-top:3rem;padding-top:1rem;border-top:1px solid var(--rule);font-size:15px;color:var(--muted)}
.lessonfoot a{margin-right:1rem}

/* ---------- phones ---------- */
button,a{-webkit-tap-highlight-color:rgba(18,18,15,.07);touch-action:manipulation}
@media (max-width:660px){
  body{font-size:17.5px}
  .wrap{padding:26px 15px 72px}
  h1{font-size:1.62rem}
  h2{font-size:1.14rem;margin-top:2.1rem}
  .lede{font-size:1rem}
  /* wide tables scroll sideways instead of squashing */
  table.data{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;font-size:15.5px}
  table.data th,table.data td{padding:.4rem .45rem}
  /* chunk rows stack so the audio button is easy to hit */
  .chunk{flex-direction:column;gap:.45rem}
  .chunk p{flex:1 1 auto}
  .chunk .say{align-self:flex-start}
  /* thumb-sized controls */
  .say{font-size:15px;padding:.4rem .7rem;min-height:38px}
  .mic{width:100%;min-height:48px;font-size:17px}
  .sw{font-size:1rem;padding:.35rem .5rem;min-height:40px}
  .stressline{gap:.3rem}
  .opts button{font-size:16.5px;padding:.7rem .8rem}
  .builder .w,.timer,.check,.clear,.reveal,.play{min-height:42px}
  .slot{font-size:16px}
  .script.readable p{font-size:16.5px}
  .lessonfoot a{display:inline-block;margin:.15rem .8rem .15rem 0}
}

/* ---------- print ---------- */
@media print{
  :root{--paper:#fff}
  body{font-size:11.5pt}
  .wrap{max-width:none;padding:0}
  .say,.mic,.timer,.check,.clear,.reveal,.opts button,.builder,.status,.noprint{display:none!important}
  .verdict{display:block!important;border-left-color:var(--rule)}
  .script[hidden]{display:block!important}
  h2{break-after:avoid}
  .drill,.chunk{break-inside:avoid}
}