/* Shared learning navigation. Keep the compact entry and editorial continuation related. */
.reader-toolbar,
.reader-sequence,
.reader-toolbar *,
.reader-sequence * { box-sizing: border-box; }

.reader-toolbar {
  --reader-nav-ink: #153751;
  --reader-nav-muted: #4c637a;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: stretch;
  gap: .7rem;
  width: 100%;
  margin: 1.1rem 0 2rem;
  padding: 1rem;
  border: 1px solid #d6e3ee;
  border-radius: 1.25rem;
  background: #f4f8fc;
  color: var(--reader-nav-ink);
  text-align: left;
}
.reader-toolbar__heading {
  align-self: center;
  margin: 0;
  color: #294b68;
  font-size: .7rem;
  font-weight: 750;
  letter-spacing: .1em;
  line-height: 1.4;
  text-transform: uppercase;
}
.reader-toolbar.reader-toolbar a {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: .8rem;
  min-width: 0;
  min-height: 3.25rem;
  padding: 1rem;
  border: 1px solid #d9e4ef;
  border-radius: .85rem;
  background: #fff;
  color: var(--reader-nav-ink);
  text-align: left;
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: background-color 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}
.reader-toolbar.reader-toolbar a:hover {
  border-color: #8baac6;
  background: #f9fcff;
  box-shadow: 0 4px 12px rgb(18 59 93 / 6%);
  text-decoration: none;
}
.reader-toolbar.reader-toolbar a.reader-toolbar__previous { grid-column: 1; grid-row: 2; }
.reader-toolbar.reader-toolbar a.reader-toolbar__next {
  grid-column: 2;
  grid-row: 2;
  justify-content: space-between;
  border-color: #bed3e8;
  background: #e9f2fc;
  color: #123b5d;
}
.reader-toolbar.reader-toolbar a.reader-toolbar__next:hover { border-color: #6c95bb; background: #e0edfb; }
.reader-toolbar.reader-toolbar a.reader-toolbar__library {
  grid-column: 2;
  grid-row: 1;
  justify-self: end;
  justify-content: flex-start;
  align-self: center;
  gap: .45rem;
  min-height: 44px;
  padding: .2rem .45rem;
  border: 0;
  border-radius: .45rem;
  background: transparent;
  color: #264f76;
  box-shadow: none;
}
.reader-toolbar__library > span:last-child { display: block; }
.reader-toolbar__library small { display: none; }
.reader-toolbar__library strong { font-size: .8rem; font-weight: 650; }
.reader-toolbar__library-mark { display: flex; flex: 0 0 auto; }
.reader-toolbar__library-mark svg { width: 1rem; height: 1rem; }
.reader-toolbar__copy { display: flex; min-width: 0; flex-direction: column; gap: .3rem; }
.reader-toolbar small {
  color: var(--reader-nav-muted);
  font-size: .68rem;
  font-weight: 650;
  line-height: 1.4;
}
.reader-toolbar strong { color: inherit; font-size: .87rem; font-weight: 700; line-height: 1.45; }
.reader-toolbar__direction {
  display: grid;
  width: 2rem;
  height: 2rem;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid #ceddeb;
  border-radius: 50%;
  background: #f3f7fc;
  color: #204e75;
}
.reader-toolbar__next .reader-toolbar__direction { border-color: #a7c5e0; background: #fff; }
.reader-toolbar svg { display: block; width: 1.1rem; height: 1.1rem; flex: 0 0 auto; }
.reader-toolbar a:focus-visible,
.reader-sequence a:focus-visible {
  position: relative;
  z-index: 1;
  outline: 3px solid #2473bc;
  outline-offset: 4px;
}

/* A framed section makes continuation feel intentional, not like another paragraph. */
.reader-sequence {
  width: 100%;
  margin: 3rem auto 1.5rem;
  padding: clamp(1.1rem, 3vw, 2rem);
  border: 1px solid #d6e3ee;
  border-radius: 1.5rem;
  background: linear-gradient(145deg, #f6faff, #f0f5fb);
  color: #123348;
  text-align: left;
}
.reader-sequence-heading { margin: 0 0 1.4rem; }
.reader-sequence-kicker {
  display: flex;
  align-items: center;
  gap: .6rem;
  margin: 0 0 .6rem;
  color: #355875;
  font-size: .67rem;
  font-weight: 750;
  line-height: 1.4;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.reader-sequence-kicker::before {
  content: '';
  width: 1.6rem;
  height: 3px;
  flex: 0 0 auto;
  border-radius: 3px;
  background: #46bfc5;
}
.reader-sequence .reader-sequence-heading h2 {
  margin: 0 0 .65rem;
  color: #102e49;
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 750;
  letter-spacing: -.035em;
  line-height: 1.2;
  text-align: left;
}
.reader-sequence-position {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .3rem .55rem;
  margin: 0;
  color: #405d76;
  font-size: .8rem;
  line-height: 1.6;
  text-align: left;
}
.reader-sequence-route-label { color: #4b647c; font-weight: 500; }
.reader-sequence-route-label::after { content: '/'; margin-left: .55rem; color: #6b8196; }
.reader-sequence-position strong { color: #254864; font-weight: 600; overflow-wrap: anywhere; }
.reader-sequence-grid {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.15fr);
  align-items: stretch;
  gap: .9rem;
}
.reader-sequence-choices { display: grid; grid-template-columns: minmax(0, 1fr); gap: .75rem; min-width: 0; }
.reader-sequence-grid:not(.reader-sequence-grid--single) > .reader-path-card--previous { align-self: start; }
.reader-sequence .reader-sequence-grid a.reader-path-card {
  position: relative;
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  min-width: 0;
  min-height: 4rem;
  padding: 1.4rem;
  border: 1px solid #123b5d;
  border-radius: 1rem;
  background: #123b5d;
  color: #e0eeff;
  text-align: left;
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: border-color 160ms ease, background-color 160ms ease, box-shadow 160ms ease;
}
.reader-sequence .reader-sequence-grid a.reader-path-card:hover {
  border-color: #386d98;
  background: #194b72;
  box-shadow: 0 7px 20px rgb(18 59 93 / 12%);
}
.reader-path-card__copy { display: flex; min-width: 0; flex: 1 1 auto; flex-direction: column; align-items: flex-start; gap: .65rem; text-align: left; }
.reader-sequence .reader-sequence-grid a.reader-path-card .reader-path-card__eyebrow {
  color: #d8eeff;
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .085em;
  line-height: 1.5;
  text-transform: uppercase;
}
.reader-sequence .reader-sequence-grid a.reader-path-card .reader-path-card__title {
  color: #eaf3ff;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -.015em;
  line-height: 1.4;
}
.reader-sequence .reader-sequence-grid a.reader-path-card .reader-path-card__reason { color: #cfdfef; font-size: .82rem; line-height: 1.65; }
.reader-path-card__arrow {
  display: grid;
  width: 2.35rem;
  height: 2.35rem;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid #75a9c9;
  border-radius: 50%;
  background: #1d4d73;
  color: #d5eaff;
}
.reader-path-card__arrow svg { display: block; width: 1.1rem; height: 1.1rem; }
.reader-sequence .reader-sequence-grid a.reader-path-card--suggested .reader-path-card__arrow { align-self: flex-end; }
.reader-sequence .reader-sequence-grid a.reader-path-card--previous {
  flex-direction: column-reverse;
  align-items: flex-start;
  justify-content: flex-end;
  gap: 1.1rem;
  border-color: #d2e0ed;
  background: #fff;
  color: #123348;
}
.reader-sequence .reader-sequence-grid a.reader-path-card--previous:hover { border-color: #92afca; background: #fbfdff; }
.reader-sequence .reader-sequence-grid a.reader-path-card--previous .reader-path-card__eyebrow { color: #4d657b; }
.reader-sequence .reader-sequence-grid a.reader-path-card--previous .reader-path-card__title { color: #163b5b; font-size: 1rem; }
.reader-sequence .reader-sequence-grid a.reader-path-card--previous .reader-path-card__arrow { border-color: #d0dfec; background: #eff5fb; color: #284e71; }
.reader-sequence .reader-sequence-grid a.reader-path-card--previous .reader-path-card__copy { flex: 0 1 auto; }
.reader-sequence-utilities { margin-top: 1.2rem; padding-top: .75rem; border-top: 1px solid #d6e2ee; }
.reader-sequence .reader-sequence-utilities a.reader-path-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.25rem;
  padding: .5rem .1rem;
  color: #21496c;
  text-align: left;
  text-decoration: none;
}
.reader-sequence .reader-sequence-utilities a.reader-path-card:hover { color: #174f87; text-decoration: underline; text-underline-offset: .2em; }
.reader-sequence-utilities .reader-path-card__copy { gap: .2rem; }
.reader-sequence-utilities .reader-path-card__eyebrow { color: #4c657d; font-size: .72rem; line-height: 1.4; }
.reader-sequence-utilities .reader-path-card__title { color: #193e60; font-size: .88rem; font-weight: 650; line-height: 1.5; }
.reader-sequence-utilities .reader-path-card__arrow { width: 2rem; height: 2rem; border: 0; background: transparent; color: #345a7c; }
.reader-sequence-footer { display: flex; align-items: center; justify-content: space-between; gap: .6rem 1.25rem; margin-top: .65rem; }
.reader-sequence .reader-sequence-footer .reader-sequence-note { flex: 1 1 22rem; min-width: 0; margin: 0; color: #4c6379; font-size: .7rem; line-height: 1.6; overflow-wrap: anywhere; }
.reader-sequence-footer .reader-tools.tutorial-top-tools { display: flex; flex: 0 0 auto; width: auto; margin: 0; padding: 0; border: 0; border-radius: 0; background: transparent; }

@media (max-width: 42rem) {
  .reader-toolbar { gap: .6rem; padding: .75rem; border-radius: 1.1rem; }
  .reader-toolbar.reader-toolbar a { gap: .65rem; padding: .85rem; }
  .reader-toolbar.reader-toolbar a.reader-toolbar__previous { grid-column: 1 / -1; grid-row: 2; }
  .reader-toolbar.reader-toolbar a.reader-toolbar__next { grid-column: 1 / -1; grid-row: 3; }
  .reader-toolbar.reader-toolbar a.reader-toolbar__library { grid-column: 2; grid-row: 1; padding: .1rem; }
  .reader-toolbar__previous .reader-toolbar__direction { order: 2; margin-left: auto; }
  .reader-toolbar__previous .reader-toolbar__copy { order: 1; }
  .reader-toolbar strong { font-size: .9rem; }
  .reader-toolbar__library strong { font-size: .76rem; }
  .reader-sequence { margin-top: 2.25rem; border-radius: 1.25rem; }
  .reader-sequence-heading { margin-bottom: 1.2rem; }
  .reader-sequence-grid { grid-template-columns: minmax(0, 1fr); gap: .75rem; }
  .reader-sequence .reader-sequence-grid a.reader-path-card { padding: 1.1rem; }
  .reader-sequence .reader-sequence-grid a.reader-path-card--previous { flex-direction: row; align-items: center; justify-content: space-between; gap: .8rem; }
  .reader-sequence .reader-sequence-grid a.reader-path-card--previous .reader-path-card__copy { flex: 1 1 auto; }
  .reader-sequence .reader-sequence-grid a.reader-path-card--previous .reader-path-card__title { font-size: .95rem; }
  .reader-path-card__copy { gap: .5rem; }
  .reader-sequence-footer { flex-wrap: wrap; }
  .reader-sequence-footer .reader-tools.tutorial-top-tools { margin-left: auto; }
}
@media (max-width: 22rem) {
  .reader-toolbar { padding: .6rem; gap: .5rem; }
  .reader-toolbar__heading { font-size: .62rem; letter-spacing: .06em; }
  .reader-toolbar.reader-toolbar a { padding: .75rem; }
  .reader-toolbar strong { font-size: .84rem; }
  .reader-toolbar__library strong { font-size: .72rem; }
  .reader-sequence { padding: .85rem; }
  .reader-sequence .reader-sequence-grid a.reader-path-card { padding: .95rem; gap: .65rem; }
  .reader-path-card__arrow { width: 2rem; height: 2rem; }
}
@media (prefers-reduced-motion: reduce) {
  .reader-toolbar a,
  .reader-sequence .reader-path-card,
  .reader-sequence .reader-sequence-grid a.reader-path-card { transition: none; }
}
@media print {
  .reader-toolbar { display: none; }
  .reader-sequence { background: #fff; box-shadow: none; }
  .reader-sequence-grid { display: block; }
  .reader-sequence .reader-sequence-grid a.reader-path-card { margin: .75rem 0; background: #fff; border-color: #b8c9d1; box-shadow: none; break-inside: avoid; transition: none; }
  .reader-sequence .reader-sequence-grid a.reader-path-card .reader-path-card__eyebrow,
  .reader-sequence .reader-sequence-grid a.reader-path-card .reader-path-card__title,
  .reader-sequence .reader-sequence-grid a.reader-path-card .reader-path-card__reason,
  .reader-sequence .reader-sequence-grid a.reader-path-card .reader-path-card__arrow { color: #123348; background: transparent; }
}