/* Learning edition — Gramineae Cowork style (paper / ink / pistachio; glyph + word for states).
   Same class names as the kit's original learning.css; only the look changed. */
.learn-intro{max-width:68ch;font:400 21px/1.6 var(--serif)}
.learn-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.learn-card{background:var(--surface);padding:28px;border:1px solid var(--line);border-radius:var(--r);margin:24px 0}
.learn-card h2,.learn-card h3{font-family:var(--serif);font-weight:400;line-height:1.2;letter-spacing:-.3px}
.learn-card h2{font-size:32px;margin:0 0 12px}
.learn-card h3{font-size:26px;margin:0 0 14px}
.learn-card p,.learn-card li{font-size:17px;line-height:1.7}
.learn-card p{max-width:68ch}
.learn-tabs{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0}
.learn-button{background:var(--surface);border:1px solid var(--control);color:var(--ink);padding:0 16px;min-height:44px;border-radius:var(--r);font:500 14px/1.3 var(--sans);text-decoration:none;display:inline-flex;align-items:center;gap:8px;cursor:pointer;transition:background .12s}
.learn-button:hover{background:var(--pistachio)}
.learn-button[aria-pressed=true]{background:var(--pistachio);border-color:var(--ink)}
.learn-button.primary{background:var(--ink);border-color:var(--ink);color:var(--surface)}
.learn-button.primary:hover{opacity:.9;background:var(--ink)}
.learn-button:disabled{opacity:.5;cursor:default}
.learn-button:disabled:hover{background:var(--surface)}
.learn-note{display:block;width:100%;min-height:110px;resize:vertical;border:1px solid var(--control);border-radius:var(--r);background:var(--surface);padding:12px 14px;color:var(--ink);font:16px/1.6 var(--sans);margin:12px 0}
.learn-small{font-size:14px;color:var(--muted);line-height:1.6}
.learn-field{display:block;margin:20px 0}
.learn-field span{display:block;margin-bottom:8px;font-size:15px}
.learn-field input[type=range]{width:100%;accent-color:var(--ink);min-height:32px}
.learn-field select{width:100%;min-height:44px;padding:0 12px;background:var(--surface);color:var(--ink);border:1px solid var(--control);border-radius:var(--r);font-size:16px}
.learn-result{background:var(--positive-bg);padding:18px 20px;line-height:1.7;margin:16px 0;border-radius:var(--r);font-size:16px}
.learn-sources{font-size:14px;display:flex;flex-wrap:wrap;gap:6px 16px;line-height:1.6;margin-top:22px;padding-top:12px;border-top:1px solid var(--line)}
.learn-sources a{color:var(--ink);font-weight:500;text-underline-offset:3px}
.learn-sources a:hover{color:var(--positive)}
.learn-figure{margin:24px 0}
.learn-figure img{display:block;width:100%;max-height:520px;object-fit:contain;background:var(--image);border:1px solid var(--line)}
.learn-figure figcaption{font-size:13px;color:var(--muted);line-height:1.55;padding-top:8px}
.look-list{padding-left:22px}
.look-list li{margin:6px 0}

/* stories: readable main text */
.story-body{max-width:68ch;font-size:18px;line-height:1.75}
.story-body p{margin:0 0 18px}
.story-body h3{font:400 32px/1.2 var(--serif);letter-spacing:-.4px;margin:8px 0 16px}
.story-kicker{font-size:12px;font-weight:500;letter-spacing:.8px;text-transform:uppercase;color:var(--muted)}
.story-article{border-top:2px solid var(--ink);padding:40px 0}
.story-article:first-child{padding-top:24px}
.learn-details{border-top:1px solid var(--line);padding:14px 0}
.learn-details summary{font-weight:500;cursor:pointer;line-height:1.5;min-height:32px;display:list-item}
.learn-details summary:hover{color:var(--positive)}
.learn-details[open] summary{margin-bottom:12px}

/* comparison lab */
.compare-lab-photos{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.compare-lab-photos figure{margin:0;min-width:0}
.compare-window{height:360px;overflow:hidden;background:var(--image);border:1px solid var(--line);display:flex;align-items:center;justify-content:center}
.compare-window img{width:100%;height:100%;object-fit:contain;transition:filter .2s,transform .2s}
.compare-lab-photos figcaption{font-size:14px;line-height:1.5;padding-top:8px}
.compare-lab-photos.gray img{filter:grayscale(1)}
.compare-lab-photos.zoom img{transform:scale(1.65)}

/* author's teaching diagrams (not photos, not engineering) */
.learn-diagram{width:100%;height:auto;display:block;background:var(--surface);border:1px solid var(--line)}
.learn-diagram text{font-family:var(--sans);fill:var(--ink);font-size:15px}

/* quiz */
.quiz-options{display:grid;gap:8px;margin:18px 0}
.quiz-options button{text-align:left;line-height:1.45;justify-content:flex-start;padding:10px 16px}
.quiz-options button[data-picked=true]{outline:2px solid var(--ink);outline-offset:2px;background:var(--pistachio)}

.course-meter{height:4px;background:var(--line);max-width:450px;margin:12px 0}
.course-meter span{display:block;height:100%;background:var(--ink);transition:width .2s}
.glossary-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px 24px}
.glossary-grid article{border-top:1px solid var(--line);padding-top:16px;line-height:1.65}
.glossary-grid h3{font:400 24px/1.2 var(--serif);margin:0 0 8px}
.lab-switches{display:flex;flex-wrap:wrap;gap:8px}
.learn-header-note{padding:16px 20px;background:var(--surface);border:1px solid var(--line);border-left:2px solid var(--ink);line-height:1.65;margin:24px 0;font-size:16px}
.learn-header-note a{font-weight:500}
.learn-day-links{display:flex;gap:8px;flex-wrap:wrap;margin:22px 0}
.task-check{display:flex;align-items:flex-start;gap:12px;line-height:1.6;margin:12px 0;font-size:16px;cursor:pointer}
.task-check input{margin-top:4px;min-width:18px;min-height:18px;accent-color:var(--ink)}
.task-check:has(input:checked){color:var(--muted)}
.new-course-banner{grid-column:1/-1;border-top:1px solid var(--line);padding-top:24px;color:var(--ink)}
.new-course-banner a{color:var(--ink);font-weight:500}
.study-end{font:400 22px/1.55 var(--serif);max-width:68ch;padding:28px 0;border-top:2px solid var(--ink)}
.learn-save-status{font-size:13px;color:var(--muted);min-height:1.5em}
.learn-object{font:400 18px/1.65 var(--serif)}
.chapter-title{overflow-wrap:anywhere}
.regional-index{display:flex;flex-wrap:wrap;gap:8px}
.regional-index a{min-height:40px;display:inline-flex;align-items:center;padding:0 12px;border:1px solid var(--control);border-radius:var(--r);background:var(--surface);text-decoration:none;font-size:14px}
.regional-index a:hover{background:var(--pistachio)}
.cover-p{max-width:570px}

@media(max-width:800px){
  .learn-grid,.glossary-grid{grid-template-columns:1fr}
  .learn-card{padding:20px}
  .compare-window{height:240px}
  .story-body{font-size:17px}
  .learn-card h2{font-size:28px}
  .learn-intro{font-size:19px}
}
@media(max-width:480px){
  .compare-window{height:180px}
  .compare-lab-photos{gap:8px}
  .learn-tabs button{flex:1 1 40%}
  .learn-card{padding:16px}
  .learn-diagram text{font-size:17px}
  .learn-button{max-width:100%;overflow-wrap:anywhere}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media print{
  .learn-tabs,.lab-switches,.learn-button{display:none}
  .story-article,.learn-card{break-inside:auto}
  .learn-details>div{display:block}
  .compare-window{height:220px}
  .learn-note{min-height:70px}
  .chapter{display:block!important}
  .learn-day-panel[hidden]{display:block!important}
}