/* ============================================================
   Marblehead 101 — course stylesheet
   Locked design: matches identity-mockups/b2-course.html and
   identity-mockups/landing.html (mockups removed at merge).
   Inherits CSS custom properties from assets/site.css.
   ============================================================ */

/* ---- Sticky course bar (chapter pages only) ---- */
.m101-stickybar {
  position: sticky; top: 0; z-index: 20;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.m101-stickybar .row {
  padding: 10px 16px;
  display: flex; align-items: center; gap: 12px;
  max-width: 1180px; margin: 0 auto;
}
.m101-stickybar .brand {
  font-size: 13px; font-weight: 700; color: var(--text);
  text-decoration: none; white-space: nowrap;
}
.m101-stickybar .brand .scope { color: var(--text-muted); font-weight: 600; }
.m101-stickybar .where {
  flex: 1;
  font-size: 12px;
  color: var(--text-subtle);
  font-weight: 600;
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.m101-stickybar .toc-btn {
  background: var(--c-navy); color: #fff;
  border: 0;
  padding: 7px 12px 7px 10px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 700;
  font-family: inherit;
  display: inline-flex; align-items: center; gap: 6px;
  cursor: pointer;
}
.m101-stickybar .toc-btn::before {
  content: ""; width: 14px; height: 10px;
  background:
    linear-gradient(currentColor, currentColor) 0 0 / 100% 2px no-repeat,
    linear-gradient(currentColor, currentColor) 0 50% / 100% 2px no-repeat,
    linear-gradient(currentColor, currentColor) 0 100% / 100% 2px no-repeat;
}
.m101-stickybar .track { height: 3px; background: var(--divider); }
.m101-stickybar .fill { height: 100%; background: var(--c-buoy); }

/* ---- Layout: sidebar + main ---- */
.m101-layout {
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px 16px 80px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
.m101-syllabus { display: none; }
@media (min-width: 980px) {
  .m101-stickybar .toc-btn { display: none; }
  .m101-layout {
    grid-template-columns: 240px 1fr;
    gap: 56px;
    padding: 32px 24px 80px;
  }
  .m101-syllabus {
    display: block;
    position: sticky; top: 80px;
    align-self: start;
    font-size: 14px;
  }
}
.m101-syllabus .label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-subtle);
  font-weight: 700;
  margin: 0 0 12px;
}
.m101-syllabus ol {
  list-style: none; padding: 0; margin: 0;
  counter-reset: m101lec;
}
.m101-syllabus li { counter-increment: m101lec; margin: 0; }
.m101-syllabus a {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 9px 10px;
  text-decoration: none;
  color: var(--text-muted);
  border-radius: 6px;
  line-height: 1.35;
}
.m101-syllabus a::before {
  content: counter(m101lec, decimal-leading-zero);
  font-variant-numeric: tabular-nums;
  color: var(--text-subtle);
  font-weight: 700;
  font-size: 12px;
  padding-top: 2px;
  min-width: 22px;
}
.m101-syllabus li.done a::before { content: "✓"; color: var(--c-sage); }
.m101-syllabus li.cur a {
  background: var(--c-navy);
  color: #fff;
  font-weight: 600;
}
.m101-syllabus li.cur a::before { color: rgba(255,255,255,0.7); }
.m101-syllabus a:hover:not([class*=cur]) { background: var(--divider); color: var(--text); }

/* ---- Chapter body ---- */
.m101-main { min-width: 0; }
.m101-chiprow {
  display: flex; align-items: center; gap: 12px; margin: 0 0 18px;
  flex-wrap: wrap;
}
.m101-chip {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--c-navy);
  color: #fff;
  padding: 6px 14px 6px 8px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}
.m101-chip .num {
  background: #fff;
  color: var(--c-navy);
  width: 20px; height: 20px;
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 11px;
  font-weight: 800;
}
.m101-chiprow .meta { font-size: 13px; color: var(--text-subtle); }
.m101-main h1 {
  font-size: 34px;
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 800;
  margin: 0 0 14px;
}
@media (min-width: 700px) { .m101-main h1 { font-size: 42px; } }
.m101-dek {
  font-size: 19px;
  color: var(--text-muted);
  margin: 0 0 28px;
  line-height: 1.5;
  max-width: 640px;
}
@media (min-width: 700px) { .m101-dek { font-size: 20px; } }
.m101-objectives {
  background: var(--surface);
  border-left: 3px solid var(--c-teal);
  padding: 16px 20px;
  margin: 0 0 32px;
  border-radius: 0 8px 8px 0;
}
.m101-objectives .label {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--c-teal); font-weight: 700; margin: 0 0 10px;
}
.m101-objectives ul { margin: 0; padding-left: 18px; color: var(--text-muted); font-size: 15px; }
.m101-objectives li { margin: 4px 0; }
.m101-main p { margin: 0 0 18px; max-width: 660px; }
.m101-main h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 36px 0 14px;
  letter-spacing: -0.01em;
}
.m101-main ul,
.m101-main ol {
  margin: 0 0 18px;
  padding-left: 22px;
  max-width: 660px;
  color: var(--text);
}
.m101-main ul { list-style: disc; }
.m101-main ol { list-style: decimal; }
.m101-main li {
  line-height: 1.55;
  margin: 6px 0;
}
.m101-main li::marker { color: var(--c-buoy); }
.m101-main li strong { color: var(--text); }
.m101-main li > p { margin: 0 0 8px; }
.m101-stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px;
  margin: 24px 0 32px;
  max-width: 660px;
}
.m101-stats .s {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}
.m101-stats .v { font-size: 26px; font-weight: 800; letter-spacing: -0.02em; color: var(--c-navy); line-height: 1; }
@media (min-width: 700px) { .m101-stats .v { font-size: 30px; } }
.m101-stats .l { font-size: 11px; color: var(--text-subtle); margin-top: 6px; text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600; }
.m101-main a.inline { color: var(--c-teal); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }

/* ---- Go deeper ---- */
.m101-digin {
  margin: 40px 0 0;
  padding: 24px 22px;
  background: var(--surface);
  border-radius: 14px;
  border: 1px solid var(--border);
}
.m101-digin-label {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--text-subtle); font-weight: 700; margin: 0 0 14px;
}
.m101-digin-grid {
  display: grid; grid-template-columns: 1fr; gap: 10px;
}
@media (min-width: 700px) {
  .m101-digin-grid { grid-template-columns: repeat(3, 1fr); gap: 12px; }
}
.m101-digin-card {
  background: var(--bg);
  border-radius: 10px;
  padding: 16px 18px;
  text-decoration: none;
  color: var(--text);
  border: 1px solid transparent;
}
.m101-digin-card:hover { border-color: var(--c-navy); }
.m101-digin-card .tag {
  font-size: 10px; text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--c-teal); font-weight: 700; margin: 0 0 6px;
}
.m101-digin-card .ttl { font-size: 15px; font-weight: 700; line-height: 1.3; margin: 0 0 4px; }
.m101-digin-card .desc { font-size: 13px; color: var(--text-muted); line-height: 1.4; margin: 0; }

/* ---- Pager ---- */
.m101-pager {
  margin-top: 40px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
@media (min-width: 700px) {
  .m101-pager { grid-template-columns: 1fr 1fr; gap: 12px; }
}
.m101-pager a {
  text-decoration: none;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
}
.m101-pager a:hover { border-color: var(--c-navy); }
.m101-pager .dir { font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-subtle); font-weight: 700; margin-bottom: 4px; }
.m101-pager .ttl { font-size: 15px; font-weight: 700; }
@media (min-width: 700px) { .m101-pager .next { text-align: right; } }
.m101-pager .next.primary { background: var(--c-navy); color: #fff; border-color: var(--c-navy); }
.m101-pager .next.primary .dir { color: rgba(255,255,255,0.7); }

/* ---- Sources (auto-injected by assets/citations.js) ---- */
.m101-main .sources-list {
  margin: 48px 0 32px;
  padding: 24px 0 0;
  border-top: 1px solid var(--border);
  max-width: 660px;
}
.m101-main .sources-list-heading {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--c-buoy);
  margin: 0 0 16px;
}
.m101-main .sources-list-ol {
  font-size: 14px;
  line-height: 1.55;
  color: var(--text-muted);
  padding-left: 28px;
  margin: 0;
  font-variant-numeric: tabular-nums;
}
.m101-main .sources-list-ol li {
  margin: 0 0 12px;
  padding-left: 6px;
  scroll-margin-top: 80px;
}
.m101-main .sources-list-ol li::marker {
  color: var(--c-buoy);
  font-weight: 700;
}
.m101-main .sources-list-ol li:target {
  background: color-mix(in srgb, var(--c-teal) 14%, transparent);
  border-radius: 4px;
  padding: 4px 8px;
  margin-left: -8px;
}
.m101-main .sources-list-ol li a:not(.sources-backref) {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: var(--c-text-faint, var(--border));
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  word-break: break-word;
}
.m101-main .sources-list-ol li a:not(.sources-backref):hover {
  color: var(--c-buoy);
  text-decoration-color: var(--c-buoy);
}
.m101-main .sources-list-ol .sources-backref {
  display: inline-block;
  margin-left: 6px;
  font-size: 11px;
  font-style: normal;
  color: var(--text-subtle);
  text-decoration: none;
  padding: 1px 5px;
  border-radius: 3px;
}
.m101-main .sources-list-ol .sources-backref:hover {
  background: var(--divider);
  color: var(--text);
}

/* ---- Mobile drawer ---- */
.m101-drawer-scrim {
  position: fixed; inset: 0;
  background: rgba(15,42,61,0.4);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.18s, visibility 0.18s;
  z-index: 50;
}
.m101-drawer {
  position: fixed; left: 0; right: 0; bottom: 0;
  background: var(--surface);
  border-radius: 18px 18px 0 0;
  box-shadow: 0 -10px 30px rgba(15,42,61,0.18);
  padding: 12px 0 24px;
  transform: translateY(100%);
  transition: transform 0.22s;
  z-index: 60;
  max-height: 80vh; overflow: auto;
}
.m101-drawer::before {
  content: ""; width: 38px; height: 4px;
  background: var(--border);
  border-radius: 2px;
  display: block;
  margin: 0 auto 14px;
}
.m101-drawer .dlabel {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--text-subtle); font-weight: 700;
  padding: 0 24px 12px;
  margin: 0;
}
.m101-drawer ol {
  list-style: none; padding: 0; margin: 0; counter-reset: m101drw;
}
.m101-drawer li { counter-increment: m101drw; margin: 0; }
.m101-drawer a {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 14px 24px;
  text-decoration: none;
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.3;
  border-top: 1px solid var(--divider);
}
.m101-drawer a::before {
  content: counter(m101drw, decimal-leading-zero);
  font-variant-numeric: tabular-nums;
  color: var(--text-subtle);
  font-weight: 700;
  font-size: 13px;
  padding-top: 2px;
  min-width: 24px;
}
.m101-drawer li.done a::before { content: "✓"; color: var(--c-sage); }
.m101-drawer li.cur a {
  background: var(--bg);
  color: var(--text);
  font-weight: 700;
}
body.m101-drawer-open .m101-drawer-scrim { opacity: 1; visibility: visible; }
body.m101-drawer-open .m101-drawer { transform: translateY(0); }

/* ============================================================
   Landing page styles (marblehead-101/index.html)
   ============================================================ */
.m101-hero {
  padding: 64px 24px 48px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.m101-hero-inner { max-width: 760px; margin: 0 auto; }
.m101-hero .eyebrow {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--c-buoy);
  font-weight: 700;
  margin: 0 0 14px;
}
.m101-hero h1 {
  font-size: 64px;
  line-height: 1.02;
  letter-spacing: -0.025em;
  font-weight: 900;
  margin: 0 0 18px;
  color: var(--text);
}
@media (max-width: 700px) { .m101-hero h1 { font-size: 44px; } .m101-hero { padding: 40px 20px 36px; } }
.m101-hero .lede {
  font-size: 22px;
  line-height: 1.4;
  color: var(--text-muted);
  margin: 0 0 28px;
  max-width: 640px;
}
@media (max-width: 700px) { .m101-hero .lede { font-size: 18px; } }
.m101-hero .meta {
  display: flex; gap: 22px; flex-wrap: wrap;
  font-size: 13px; color: var(--text-subtle);
  margin: 0 0 32px;
}
.m101-hero .meta span { display: inline-flex; align-items: center; gap: 8px; }
.m101-hero .meta .num { font-weight: 800; color: var(--text); font-size: 18px; line-height: 1; }
.m101-hero .actions { display: flex; gap: 12px; flex-wrap: wrap; }
.m101-btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 22px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  border: 1px solid transparent;
}
.m101-btn.primary { background: var(--c-navy); color: #fff; border-color: var(--c-navy); }
.m101-btn.primary:hover { background: #102842; }
.m101-btn.secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
.m101-btn.secondary:hover { border-color: var(--c-navy); }

.m101-syllabus-page {
  max-width: 1000px;
  margin: 0 auto;
  padding: 64px 24px 96px;
}
@media (max-width: 700px) { .m101-syllabus-page { padding: 40px 16px 64px; } }
.m101-group { margin: 0 0 56px; }
.m101-group:last-child { margin-bottom: 0; }
.m101-group-head {
  display: flex; align-items: baseline; gap: 16px;
  margin: 0 0 20px;
}
.m101-group-head .roman {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--c-buoy);
  font-variant-numeric: tabular-nums;
  text-transform: uppercase;
}
.m101-group-head h2 {
  margin: 0;
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--text);
}
.m101-group-head .desc {
  color: var(--text-subtle);
  font-size: 14px;
  margin: 0;
  flex: 1;
  text-align: right;
}
@media (max-width: 700px) {
  .m101-group-head { flex-wrap: wrap; gap: 6px 14px; }
  .m101-group-head h2 { font-size: 22px; }
  .m101-group-head .desc { text-align: left; flex-basis: 100%; font-size: 13px; margin-top: 4px; }
}
.m101-group-rule { height: 1px; background: var(--border); margin: 0 0 22px; }

.m101-chapters {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 760px) { .m101-chapters { grid-template-columns: 1fr; } }
.m101-ch {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px 24px;
  text-decoration: none;
  color: var(--text);
  display: grid;
  grid-template-columns: 44px 1fr auto;
  gap: 18px;
  align-items: start;
  transition: border-color 0.12s, transform 0.12s;
}
.m101-ch:hover { border-color: var(--c-navy); transform: translateY(-1px); }
.m101-ch.done .num::after { content: " ✓"; color: var(--c-sage); font-size: 18px; }
.m101-ch .num {
  font-size: 26px;
  font-weight: 900;
  color: var(--c-buoy);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  padding-top: 2px;
}
.m101-ch .body { min-width: 0; }
.m101-ch .ttl {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 6px;
  letter-spacing: -0.005em;
}
.m101-ch .desc {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.45;
}
.m101-ch .read {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-subtle);
  font-weight: 700;
  white-space: nowrap;
  padding-top: 5px;
}
@media (max-width: 700px) {
  .m101-ch { padding: 18px 20px; gap: 14px; grid-template-columns: 32px 1fr; grid-template-rows: auto auto; }
  .m101-ch .num { font-size: 22px; padding-top: 1px; }
  .m101-ch .read { grid-column: 1 / -1; padding-top: 4px; }
}

.m101-why {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  max-width: 760px;
}
.m101-why p { margin: 0; color: var(--text-subtle); font-size: 14px; line-height: 1.6; }