/* PedagogAI content pages: comment bank + blog */
:root {
  --ink: #1d2a24; --ink-soft: #46524c; --ink-muted: #6f7974;
  --paper: #fbf8f1; --paper-deep: #f2ecdf; --card: #ffffff;
  --green: #2f5d46; --green-dark: #1f4232; --green-tint: #e7efe9;
  --marker: #ffe36e; --coral: #d9573f; --line: #e2dccd;
  --em: #b23a2b; --em-bg: #fdecea; --dev: #8a5a00; --dev-bg: #fff3d6;
  --pro: #1f4232; --pro-bg: #e2efe6; --ext: #23408e; --ext-bg: #e6edfb;
  --serif: 'Fraunces', Georgia, serif; --sans: 'DM Sans', system-ui, -apple-system, sans-serif;
  --radius: 14px; --shadow: 0 1px 2px rgba(29,42,36,.06), 0 12px 32px -14px rgba(29,42,36,.2);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--sans); background: var(--paper); color: var(--ink); font-size: 17px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: var(--green); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 760px; margin: 0 auto; padding: 0 24px; }
.mark { background: linear-gradient(180deg, transparent 55%, var(--marker) 55%, var(--marker) 92%, transparent 92%); }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; letter-spacing: -0.015em; line-height: 1.18; }
.eyebrow { font-size: .8rem; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; color: var(--green); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: 700 .98rem var(--sans); text-decoration: none; border-radius: 999px; padding: 13px 22px; border: 2px solid transparent; cursor: pointer; }
.btn-primary { background: var(--green); color: #fff; }
.btn-primary:hover { background: var(--green-dark); }
.btn-ghost { background: var(--card); color: var(--ink); border-color: var(--line); }

/* nav + footer */
.site-nav { position: sticky; top: 0; z-index: 40; background: rgba(251,248,241,.94); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.site-nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 62px; gap: 12px; }
.logo { font-family: var(--serif); font-size: 1.3rem; font-weight: 600; text-decoration: none; color: var(--ink); }
.logo span { color: var(--green); font-style: italic; }
.site-nav ul { display: flex; align-items: center; gap: 22px; list-style: none; font-size: .94rem; }
.site-nav ul a { text-decoration: none; color: var(--ink-soft); }
.site-nav ul a[aria-current="page"] { color: var(--ink); font-weight: 700; }
.site-nav .btn { padding: 8px 16px; font-size: .9rem; color: #fff; }
.site-footer { border-top: 1px solid var(--line); padding: 28px 0; font-size: .9rem; color: var(--ink-muted); margin-top: 40px; }
.site-footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.site-footer a { color: var(--ink-soft); text-decoration: none; margin-right: 18px; }

/* page header */
.page-hero { padding: 56px 0 30px; }
.page-hero h1 { font-size: clamp(2rem, 4.6vw, 3.1rem); margin: 10px 0 14px; }
.page-hero .lede { font-size: 1.1rem; color: var(--ink-soft); max-width: 680px; }
.meta { font-size: .88rem; color: var(--ink-muted); margin-top: 14px; }

/* callouts */
.formula { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 26px 0; }
.formula div { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.formula b { display: block; font-family: var(--serif); font-size: 1.1rem; margin-bottom: 4px; }
.formula span { color: var(--ink-soft); font-size: .95rem; }
.example { background: var(--card); border-left: 4px solid var(--green); border-radius: 0 var(--radius) var(--radius) 0; padding: 18px 22px; margin: 18px 0; box-shadow: var(--shadow); }
.example .tag { font-size: .72rem; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; color: var(--ink-muted); display: block; margin-bottom: 6px; }
.note { background: var(--paper-deep); border-radius: var(--radius); padding: 16px 20px; font-size: .95rem; color: var(--ink-soft); margin: 18px 0; }

/* comment bank */
.bank-tools { position: sticky; top: 62px; z-index: 30; background: rgba(251,248,241,.96); backdrop-filter: blur(6px); border-block: 1px solid var(--line); padding: 12px 0; margin: 10px 0 24px; }
.bank-tools .wrap { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.chip { font: 600 .85rem var(--sans); border: 1px solid var(--line); background: var(--card); color: var(--ink-soft); padding: 7px 13px; border-radius: 999px; cursor: pointer; }
.chip[aria-pressed="true"] { background: var(--ink); color: #fff; border-color: var(--ink); }
.search { flex: 1; min-width: 200px; font: 400 .95rem var(--sans); padding: 9px 14px; border: 1px solid var(--line); border-radius: 999px; background: var(--card); }
.bank-tools .btn { padding: 8px 14px; font-size: .86rem; }
.toc { display: flex; flex-wrap: wrap; gap: 8px; margin: 6px 0 30px; }
.toc a { font-size: .88rem; text-decoration: none; background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 6px 11px; color: var(--ink-soft); }
.subject { margin: 0 0 44px; scroll-margin-top: 140px; }
.subject > h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 4px; }
.subject > p { color: var(--ink-soft); margin-bottom: 16px; }
.levels { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.level-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 18px 8px; }
.level-card h3 { font-family: var(--sans); font-size: .82rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; display: inline-block; padding: 4px 10px; border-radius: 999px; margin-bottom: 10px; }
.lv-Emerging h3 { color: var(--em); background: var(--em-bg); }
.lv-Developing h3 { color: var(--dev); background: var(--dev-bg); }
.lv-Proficient h3 { color: var(--pro); background: var(--pro-bg); }
.lv-Extending h3 { color: var(--ext); background: var(--ext-bg); }
.lv-all h3 { color: var(--green-dark); background: var(--green-tint); }
.group-label { font-size: .72rem; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; color: var(--ink-muted); margin: 8px 0 4px; }
.cmts { list-style: none; }
.cmts li { display: flex; gap: 10px; align-items: flex-start; justify-content: space-between; padding: 8px 0; border-top: 1px dashed var(--line); font-size: .96rem; }
.cmts li:first-child { border-top: 0; }
.copy { flex-shrink: 0; font: 600 .76rem var(--sans); color: var(--green); background: var(--green-tint); border: 0; border-radius: 6px; padding: 4px 9px; cursor: pointer; }
.copy.done { background: var(--green); color: #fff; }
.hidden { display: none !important; }
.swap { width: 100%; border-collapse: collapse; background: var(--card); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); font-size: .95rem; }
.swap th, .swap td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.swap th { background: var(--paper-deep); font-size: .8rem; letter-spacing: .05em; text-transform: uppercase; }
.swap td:first-child { color: var(--ink-muted); text-decoration: line-through; text-decoration-color: rgba(217,87,63,.6); width: 32%; }

/* signup + cta */
.signup { background: var(--green); color: #eef3ef; border-radius: 18px; padding: 30px; margin: 40px 0; }
.signup h2 { color: #fff; font-size: 1.6rem; margin-bottom: 6px; }
.signup p { color: #cfdcd3; }
.signup form { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
.signup input[type=email] { flex: 1; min-width: 220px; font: 400 1rem var(--sans); padding: 13px 16px; border-radius: 999px; border: 0; }
.signup .btn { background: var(--marker); color: var(--ink); }
.signup small { display: block; margin-top: 10px; color: #b9cbbf; font-size: .8rem; }
.signup .msg { margin-top: 10px; font-weight: 700; color: #fff; min-height: 1em; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.cta { background: var(--card); border: 2px solid var(--green); border-radius: 18px; padding: 28px; margin: 40px 0; display: flex; gap: 20px; align-items: center; justify-content: space-between; flex-wrap: wrap; box-shadow: var(--shadow); }
.cta h2 { font-size: 1.45rem; margin-bottom: 4px; }
.cta p { color: var(--ink-soft); }

/* article */
article.post { padding-bottom: 20px; }
article.post h2 { font-size: 1.6rem; margin: 38px 0 12px; }
article.post h3 { font-size: 1.2rem; margin: 26px 0 8px; }
article.post p { margin: 0 0 14px; }
article.post ul, article.post ol { margin: 0 0 16px 22px; }
article.post li { margin-bottom: 6px; }
.post-list { display: grid; gap: 18px; margin: 10px 0 30px; }
.post-card { display: block; text-decoration: none; color: inherit; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; }
.post-card:hover { border-color: var(--green); }
.post-card h2 { font-size: 1.35rem; margin-bottom: 6px; color: var(--ink); }
.post-card p { color: var(--ink-soft); font-size: .97rem; }
.post-card .more { color: var(--green); font-weight: 700; font-size: .9rem; margin-top: 8px; display: inline-block; }
.related { border-top: 1px solid var(--line); margin-top: 30px; padding-top: 20px; }
.related h2 { font-size: 1.2rem; margin-bottom: 10px; }

@media (max-width: 760px) {
  body { font-size: 16px; }
  .wrap, .narrow { padding: 0 16px; }
  .site-nav ul li.hide-sm { display: none; }
  .formula, .levels { grid-template-columns: 1fr; }
  .bank-tools { position: static; }
  .swap td:first-child { width: 40%; }
  .signup, .cta { padding: 22px; }
}
@media print {
  .site-nav, .bank-tools, .signup, .cta, .copy, .site-footer, .toc, .no-print { display: none !important; }
  body { background: #fff; font-size: 11pt; }
  .level-card { break-inside: avoid; border-color: #bbb; }
  .subject { break-inside: auto; }
  a { color: inherit; text-decoration: none; }
}