/*!
 * Syllabus — Bootstrap 6 online course template
 *
 * Design language: a good textbook. Warm paper ground, a single ink-blue accent,
 * a display serif for headings against a plain sans for everything functional,
 * and rules rather than boxes wherever a rule will carry the structure.
 *
 * The structural idea carrying the identity is progress. Course pages list a
 * curriculum and stop, leaving the two questions a student actually has — how
 * much is left, and when would I finish — unanswered. Lessons here tick off and
 * are remembered, and an hours-a-week slider turns what remains into a date.
 */

:root {
  --brand: oklch(46% 0.12 258);
  --kit-section-y: 4.5rem;
  --sy-rule: color-mix(in oklab, var(--bs-fg-body), transparent 88%);
  --sy-mark: oklch(72% 0.15 78);
}

@media (width >= 768px) { :root { --kit-section-y: 6rem; } }

[data-bs-theme="light"] {
  --bs-bg-body: oklch(98.5% 0.006 85);
  --bs-bg-2: oklch(96% 0.009 85);
}

[data-bs-theme="dark"] {
  --bs-bg-body: oklch(19% 0.01 258);
  --bs-bg-2: oklch(23% 0.012 258);
}

.display-serif,
.hero-title,
.section-title,
.prose h2,
.prose h3 {
  font-family: ui-serif, Georgia, "Times New Roman", serif;
  font-weight: 400;
  letter-spacing: -0.015em;
}

.hero-title,
.section-title { text-wrap: balance; line-height: 1.08; }

/* ---------------------------------------------------------------
   Header + footer
   --------------------------------------------------------------- */

.site-header { border-bottom: 1px solid var(--sy-rule); }
.site-footer { border-top: 1px solid var(--sy-rule); }

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--bs-fg-body);
  text-decoration: none;
  font-family: ui-serif, Georgia, serif;
  font-size: 1.25rem;
}

.brand-glyph { color: var(--bs-primary-base); flex: none; }

.site-header .nav-link,
.site-header .btn-solid { text-decoration: none; }

.link-list { list-style: none; padding-left: 0; margin-bottom: 0; }
.link-list li { margin-bottom: 0.5rem; }
.link-list a { color: var(--bs-fg-2, inherit); }

/* ---------------------------------------------------------------
   Hero + shared
   --------------------------------------------------------------- */

.pill {
  display: inline-block;
  padding-block: 0.35rem;
  padding-inline: 0.85rem;
  border: 1px solid var(--sy-rule);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--bs-fg-2, inherit);
}

.hero .btn-solid,
.hero .btn-outline { text-decoration: none; }

.framed { border-radius: var(--bs-radius-6); }

.eyebrow-rule {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 0;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.73rem;
  font-weight: 650;
  color: var(--bs-primary-fg);
}

.eyebrow-rule::before {
  content: "";
  width: 1.5rem;
  height: 1px;
  background-color: currentcolor;
  flex: none;
}

.facts { margin-bottom: 0; border-top: 1px solid var(--sy-rule); }

.facts > div {
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  padding-block: 0.7rem;
  border-bottom: 1px solid var(--sy-rule);
}

.facts dt { font-weight: 600; margin-bottom: 0; }
.facts dd { margin-bottom: 0; text-align: right; color: var(--bs-fg-2, inherit); }

.tick-list { list-style: none; padding-left: 0; margin-bottom: 0; }

.tick-list li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: 0.6rem;
  color: var(--bs-fg-2, inherit);
}

.tick-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.42rem;
  width: 0.8rem;
  height: 0.42rem;
  border-left: 1.8px solid var(--bs-primary-base);
  border-bottom: 1.8px solid var(--bs-primary-base);
  transform: rotate(-45deg);
}

/* ---------------------------------------------------------------
   Outcomes
   --------------------------------------------------------------- */

.outcome { position: relative; }

.outcome-no {
  display: block;
  margin-bottom: 0.9rem;
  font-family: ui-serif, Georgia, serif;
  font-size: 1.5rem;
  color: var(--bs-primary-base);
  opacity: 0.55;
}

/* ---------------------------------------------------------------
   Curriculum
   --------------------------------------------------------------- */

.modules { border-top: 1px solid var(--sy-rule); }

.module { border-bottom: 1px solid var(--sy-rule); }

.module > summary,
.rail-module > summary {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding-block: 1.15rem;
  cursor: pointer;
  list-style: none;
}

.module > summary::-webkit-details-marker,
.rail-module > summary::-webkit-details-marker { display: none; }

.module-no {
  font-family: ui-serif, Georgia, serif;
  font-size: 1.1rem;
  color: var(--bs-primary-base);
  opacity: 0.6;
  flex: none;
}

.module-head { flex: 1; }

.module-title { display: block; font-weight: 600; font-size: 1.05rem; }

.module-meta {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.82rem;
  color: var(--bs-fg-3, inherit);
  font-variant-numeric: tabular-nums;
}

.module > summary::after {
  content: "";
  width: 0.65rem;
  height: 0.65rem;
  border-right: 1.6px solid currentcolor;
  border-bottom: 1.6px solid currentcolor;
  transform: rotate(45deg);
  transition: transform 0.2s ease;
  opacity: 0.45;
  flex: none;
  align-self: center;
}

.module[open] > summary::after { transform: rotate(-135deg); }

.module-body { padding-bottom: 1.25rem; padding-left: 2.1rem; }

.lesson-list { list-style: none; padding-left: 0; margin-bottom: 0; }

.lesson {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.75rem;
  align-items: center;
  padding-block: 0.55rem;
  border-top: 1px solid var(--sy-rule);
}

.lesson label {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0;
  cursor: pointer;
}

/* Ticked lessons recede rather than disappear — you still want to find them. */
.lesson:has(:checked) label { text-decoration: line-through; opacity: 0.55; }

.lesson-kind {
  padding-block: 0.08rem;
  padding-inline: 0.4rem;
  border-radius: 100px;
  font-size: 0.65rem;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.kind-video { background-color: color-mix(in oklab, var(--bs-primary-base), transparent 88%); color: var(--bs-primary-fg); }
.kind-task { background-color: color-mix(in oklab, var(--sy-mark), transparent 82%); color: color-mix(in oklab, var(--sy-mark), black 32%); }

[data-bs-theme="dark"] .kind-task { color: var(--sy-mark); }

.lesson-min {
  font-size: 0.8rem;
  color: var(--bs-fg-3, inherit);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* ---------------------------------------------------------------
   Tracker
   --------------------------------------------------------------- */

.tracker {
  position: sticky;
  top: 5.5rem;
  padding: 1.6rem;
  border: 1px solid var(--sy-rule);
  border-radius: var(--bs-radius-6);
  background-color: var(--bs-bg-body);
}

.tracker-top {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.tracker-k { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.07em; color: var(--bs-fg-3, inherit); font-weight: 650; }
.tracker-v { font-size: 1.15rem; font-weight: 650; font-variant-numeric: tabular-nums; }

.tracker .form-label { font-size: 0.8rem; font-weight: 650; margin-bottom: 0.15rem; }

.tracker-out {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 1.3rem;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
}

.tracker-eta {
  padding-block: 0.75rem;
  padding-inline: 0.95rem;
  border-radius: var(--bs-radius-5);
  background-color: color-mix(in oklab, var(--bs-primary-base), transparent 93%);
  font-size: 0.9rem;
}

.tracker-reset { padding-left: 0; font-size: 0.85rem; }

/* ---------------------------------------------------------------
   Reviews, enrol, FAQ
   --------------------------------------------------------------- */

.review blockquote p { font-size: 1.02rem; text-wrap: pretty; }
.review blockquote p::before { content: "“"; }
.review blockquote p::after { content: "”"; }

.enrol {
  padding: 2rem;
  border: 1px solid var(--sy-rule);
  border-radius: var(--bs-radius-6);
  background-color: var(--bs-bg-body);
}

.enrol-price { font-family: ui-serif, Georgia, serif; font-size: 2.75rem; line-height: 1; }
.enrol-price small { font-family: var(--bs-font-sans-serif, system-ui); font-size: 0.85rem; color: var(--bs-fg-3, inherit); margin-left: 0.4rem; }

.faq { border-top: 1px solid var(--sy-rule); }
.faq details { border-bottom: 1px solid var(--sy-rule); }

.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.1rem;
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
  content: "";
  width: 0.65rem;
  height: 0.65rem;
  border-right: 1.6px solid currentcolor;
  border-bottom: 1.6px solid currentcolor;
  transform: rotate(45deg);
  transition: transform 0.2s ease;
  opacity: 0.5;
  flex: none;
}

.faq details[open] summary::after { transform: rotate(-135deg); }

.faq-body { padding-bottom: 1.2rem; max-width: 46rem; }

/* ---------------------------------------------------------------
   Lesson page
   --------------------------------------------------------------- */

.lesson-page { padding-block: 2.5rem 4rem; }

.player {
  position: relative;
  margin-bottom: 2.5rem;
  border-radius: var(--bs-radius-6);
  overflow: hidden;
  background-color: oklch(20% 0.01 258);
}

.player img { display: block; width: 100%; height: auto; opacity: 0.72; }

.player-btn {
  position: absolute;
  inset: 50% auto auto 50%;
  translate: -50% -50%;
  display: grid;
  place-items: center;
  width: 4.25rem;
  height: 4.25rem;
  border: 0;
  border-radius: 50%;
  background-color: var(--bs-white);
  color: oklch(20% 0.01 258);
  cursor: pointer;
  padding-left: 0.2rem;
  transition: transform 0.2s ease;
}

.player-btn:hover { transform: scale(1.06); }

.player-time {
  position: absolute;
  right: 0.85rem;
  bottom: 0.85rem;
  padding-block: 0.15rem;
  padding-inline: 0.5rem;
  border-radius: var(--bs-radius-3, 6px);
  background-color: oklch(0% 0 0 / 65%);
  color: var(--bs-white);
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
}

/* .prose is a Bootstrap 6 component, not a name going spare: a flex column with
   --bs-content-gap driving the rhythm and `margin-block: 0` on every child. Do
   not reintroduce margins here — they add to the gap instead of replacing it,
   and this file previously pushed the paragraph spacing to 44px that way. Style
   colour, family and borders; leave spacing to the component. */
.prose { max-width: 40rem; }
.prose p { color: var(--bs-fg-2, inherit); text-wrap: pretty; }

.prose blockquote {
  padding-left: 1.25rem;
  border-left: 3px solid var(--bs-primary-base);
}

.prose blockquote p {
  font-family: ui-serif, Georgia, serif;
  font-size: 1.2rem;
  color: var(--bs-fg-body);
}

.lesson-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--sy-rule);
}

.lesson-foot a { text-decoration: none; }

.rail { position: sticky; top: 5.5rem; }

.rail-card {
  padding: 1.35rem;
  border: 1px solid var(--sy-rule);
  border-radius: var(--bs-radius-6);
  background-color: var(--bs-bg-2);
}

.rail-module { border-bottom: 1px solid var(--sy-rule); }

.rail-module > summary {
  font-size: 0.9rem;
  font-weight: 600;
  padding-block: 0.8rem;
  display: block;
}

.rail-list { list-style: none; padding-left: 0; margin-bottom: 0.8rem; }

.rail-list li {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.6rem;
  align-items: center;
  padding-block: 0.4rem;
  font-size: 0.87rem;
}

.rail-list label { margin-bottom: 0; cursor: pointer; }

.rail-list li:has(:checked) label { text-decoration: line-through; opacity: 0.55; }

.rail-list li.is-current {
  margin-inline: -0.6rem;
  padding-inline: 0.6rem;
  border-radius: var(--bs-radius-4);
  background-color: color-mix(in oklab, var(--bs-primary-base), transparent 90%);
}

.rail-list li.is-current label { font-weight: 650; }