/* ─────────────────────────────────────────────────────────────
   /basics — page-specific styles
   inherits tokens & nav/hero/btn/section__head from ../styles.css
   ───────────────────────────────────────────────────────────── */

/* offset for sticky nav on anchor jumps */
:where(#book, #articles, [id^="a-"]) { scroll-margin-top: 80px; }

/* prominent "back home" link in nav (upper right) */
.nav__list .nav__back {
  color: var(--ink);
  font-weight: 500;
  padding: .35rem .65rem;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  margin-left: .25rem;
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.nav__list .nav__back::after { display: none; }
.nav__list .nav__back:hover {
  color: var(--green-deep);
  border-color: var(--green);
  background: var(--green-soft);
}
@media (max-width: 600px) {
  .nav__list .nav__back { padding: .25rem .5rem; font-size: .72rem; }
}

/* ─── hero override: tighten + recolor cue ─── */
.basics__hero { padding: clamp(3.25rem, 8vw, 6rem) 0 clamp(2rem, 5vw, 3rem); }
.basics__hero .hero__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.25;
  letter-spacing: -0.005em;
  font-weight: 400;
}
.basics__hero .hero__sig {
  margin-top: 1.75rem;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink-soft);
}
.basics__hero .hero__sig a {
  color: var(--green-deep);
  text-decoration-color: var(--rule-strong);
}
.basics__hero .hero__sig a:hover {
  text-decoration-color: var(--green);
}

/* ─── book section ─── */
.basics__book {
  padding: clamp(2rem, 5vw, 3.5rem) 0 clamp(1.5rem, 4vw, 2.75rem);
}
.basics__book > .container { max-width: var(--max); }

.basics__h2 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(1.7rem, 3.2vw, 2.2rem);
  line-height: 1.18;
  letter-spacing: -0.012em;
  margin: 0 0 .5rem;
  color: var(--ink);
  text-wrap: balance;
}
.basics__h2 em { font-style: italic; color: var(--ink); }

.basics__subtitle {
  font-family: var(--mono);
  font-size: .82rem;
  letter-spacing: .02em;
  color: var(--ink-mute);
  margin: 0 0 1.5rem;
}

.basics__lede {
  font-family: var(--serif);
  font-size: 1.08rem;
  line-height: 1.6;
  color: var(--ink-soft);
  margin: 0 0 2rem;
}
.basics__lede em { color: var(--ink); font-style: italic; }

/* numbered chapter list */
.basics__chapters {
  list-style: none;
  margin: 0 0 2rem;
  padding: 0;
  counter-reset: chap;
  display: grid;
  gap: clamp(1.25rem, 2.5vw, 1.75rem);
}
.basics__chapters > li {
  display: grid;
  grid-template-columns: 2.75rem 1fr;
  gap: .75rem 1.1rem;
  align-items: baseline;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
}
.basics__chapters > li:first-child { border-top: 0; padding-top: 0; }
.basics__num {
  font-family: var(--mono);
  font-size: .82rem;
  font-weight: 500;
  color: var(--green);
  letter-spacing: .04em;
  padding-top: .15rem;
}
.basics__chapters h3 {
  font-family: var(--display);
  font-weight: 500;
  font-size: 1.18rem;
  line-height: 1.3;
  margin: 0 0 .55rem;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.basics__chapters p {
  font-family: var(--serif);
  font-size: 1rem;
  line-height: 1.62;
  color: var(--ink-soft);
  margin: 0;
}

.basics__buy {
  margin: 1.75rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

/* ─── articles index (TOC) ─── */
.basics__index {
  padding: clamp(1.75rem, 4vw, 2.75rem) 0;
}
.basics__index > .container { max-width: var(--max); }

.basics__toc {
  list-style: none;
  counter-reset: toc;
  padding: 0;
  margin: 1rem 0 0;
  display: grid;
  gap: .55rem;
}
.basics__toc li {
  counter-increment: toc;
  display: flex;
  align-items: baseline;
  gap: .75rem;
  padding: .55rem 0;
  border-bottom: 1px dotted var(--rule);
  font-family: var(--serif);
  font-size: 1rem;
  line-height: 1.5;
}
.basics__toc li::before {
  content: counter(toc, decimal-leading-zero);
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--green);
  letter-spacing: .04em;
  flex: 0 0 1.85rem;
}
.basics__toc a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
  flex: 1 1 auto;
}
.basics__toc a:hover {
  color: var(--green-deep);
  border-bottom-color: var(--green);
}
.basics__toc span {
  font-family: var(--mono);
  font-size: .76rem;
  color: var(--ink-mute);
  letter-spacing: .02em;
  flex: 0 0 auto;
  white-space: nowrap;
}

/* ─── article body ─── */
.basics__article {
  padding: clamp(2rem, 5vw, 3.25rem) 0 clamp(1.5rem, 4vw, 2.5rem);
}
.basics__article > .container { max-width: var(--max); }

.article__source {
  font-family: var(--mono);
  font-size: .78rem;
  letter-spacing: .02em;
  color: var(--ink-mute);
  margin: 0 0 1rem;
}
.article__source em { font-style: italic; }
.article__source a {
  color: var(--green-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--rule-strong);
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.article__source a:hover {
  color: var(--green);
  border-bottom-color: var(--green);
}

.article__dek {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.12rem;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: .5rem 0 1.75rem;
  text-wrap: balance;
}

.basics__article p {
  font-family: var(--serif);
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--ink);
  margin: 0 0 1.15rem;
}
.basics__article p em { font-style: italic; color: var(--ink); }

.article__h3 {
  font-family: var(--display);
  font-weight: 500;
  font-size: 1.25rem;
  line-height: 1.3;
  letter-spacing: -0.005em;
  color: var(--ink);
  margin: 2rem 0 .9rem;
}

/* figure */
.article__fig {
  margin: 1.75rem 0 1.5rem;
  padding: 0;
}
.article__fig img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--rule);
  background: var(--paper-soft);
  border-radius: 2px;
}
.article__fig figcaption {
  font-family: var(--mono);
  font-size: .76rem;
  line-height: 1.55;
  letter-spacing: .015em;
  color: var(--ink-mute);
  margin-top: .65rem;
  padding-left: .15rem;
}

/* pull quote: ES original + EN translation */
.article__pull {
  margin: 2rem 0;
  padding: 1.1rem 1.25rem 1.1rem 1.4rem;
  border-left: 2px solid var(--green);
  background: var(--green-soft);
  border-radius: 0 2px 2px 0;
}
.article__pull p {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.05rem;
  line-height: 1.55;
}
.article__pull p:first-child {
  font-style: italic;
  color: var(--ink-soft);
  margin-bottom: .4rem;
}
.article__pull p:last-child {
  color: var(--ink);
}

/* numbered list inside articles */
.article__list {
  margin: 1rem 0 1.5rem;
  padding-left: 1.4rem;
  font-family: var(--serif);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--ink);
}
.article__list li {
  margin: 0 0 .65rem;
  padding-left: .25rem;
}
.article__list li strong {
  color: var(--ink);
  font-weight: 500;
}

/* ─── small screens ─── */
@media (max-width: 600px) {
  .basics__chapters > li {
    grid-template-columns: 1fr;
    gap: .35rem;
  }
  .basics__num { padding-top: 0; }
  .basics__toc li { flex-wrap: wrap; }
  .basics__toc a { flex: 1 1 0; min-width: 0; }
  .basics__toc span { flex: 0 0 100%; padding-left: 2.6rem; }
  .article__pull { padding: .9rem 1rem; }
}