/* Mejoras de accesibilidad, participación y lectura guiada. */
:root {
  --focus-ring: #d98500;
  --surface: #ffffff;
  --soft-blue: #eaf3ff;
  --shadow-soft: 0 18px 42px rgba(9, 35, 61, .12);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 4px;
}

.button-secondary {
  background: var(--surface);
  border: 1px solid #8bb9e7;
  color: var(--ink);
}

.button-secondary:hover {
  background: var(--soft-blue);
  border-color: var(--blue);
}

.sample-section {
  border-top: 1px solid var(--line);
}

.sample-note {
  color: var(--muted);
  max-width: 22rem;
}

.sample-grid,
.participate-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: minmax(0, 1.15fr) minmax(16rem, .85fr);
}

.sample-reading,
.sample-question,
.participate-actions {
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: clamp(1.25rem, 3vw, 2.25rem);
}

.sample-reading {
  background: var(--surface);
}

.sample-question {
  background: var(--ink);
  color: #fff;
}

.sample-question p,
.sample-question .sample-label {
  color: #d9edf7;
}

.sample-label {
  color: var(--teal);
  font-size: .75rem;
  font-weight: 800;
  letter-spacing: .12em;
  margin: 0 0 .9rem;
}

.sample-grid h3 {
  font-family: var(--serif);
  font-size: clamp(1.55rem, 3vw, 2.3rem);
  line-height: 1.05;
  margin: 0 0 1rem;
}

.sample-reading blockquote {
  border-left: 4px solid var(--gold);
  font-family: var(--serif);
  font-size: 1.18rem;
  line-height: 1.55;
  margin: 1.25rem 0;
  padding-left: 1rem;
}

.evidence-hint {
  border-top: 1px solid rgba(255, 255, 255, .25);
  margin-top: 1.5rem;
  padding-top: 1rem;
}

.participate-section {
  background: linear-gradient(135deg, #f6fbfd, #edf6fb);
  border-top: 1px solid var(--line);
}

.participate-steps {
  counter-reset: participation;
  display: grid;
  gap: .8rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.participate-steps li {
  align-items: baseline;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: .8rem;
  display: grid;
  gap: .25rem .8rem;
  grid-template-columns: auto 1fr;
  padding: 1rem;
}

.participate-steps li::before {
  background: var(--blue);
  border-radius: 50%;
  color: #fff;
  content: counter(participation);
  counter-increment: participation;
  font-size: .8rem;
  font-weight: 800;
  grid-row: span 2;
  height: 1.65rem;
  line-height: 1.65rem;
  text-align: center;
  width: 1.65rem;
}

.participate-steps span {
  color: var(--muted);
}

.participate-actions {
  align-self: stretch;
  background: var(--ink);
  box-shadow: var(--shadow-soft);
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.participate-actions .button-primary {
  align-self: flex-start;
}

.participate-actions p {
  color: #d9edf7;
  font-size: .93rem;
  line-height: 1.55;
  margin: 1.2rem 0 0;
}

.participate-actions a:not(.button) {
  color: #fff;
  text-decoration-thickness: 2px;
}

.audience-grid a { color: #125ecb; }
.institution-callout .eyebrow { color: #d6fff9; }
.institution-callout p:not(.eyebrow) { color: #e1fffb; }

.feedback-section { max-width: 820px; }
.feedback-form { display: grid; gap: .75rem; margin-top: 2.5rem; }
.feedback-form label { font-weight: 750; }
.feedback-form select, .feedback-form textarea { border: 1px solid var(--line); border-radius: .6rem; color: var(--ink); font: inherit; padding: .8rem; }
.feedback-form textarea { resize: vertical; }
.feedback-form .consent { color: var(--muted); font-size: .9rem; font-weight: 500; }
.feedback-form .button { justify-self: start; margin-top: .5rem; }
.form-status { color: var(--teal); font-weight: 650; margin: 0; }

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
}

@media (max-width: 760px) {
  .sample-grid,
  .participate-grid {
    grid-template-columns: 1fr;
  }

  .actions .button {
    text-align: center;
    width: 100%;
  }

  .participate-actions .button-primary {
    align-self: stretch;
  }
}

.article-hero { max-width: 900px; padding-bottom: 1.5rem; }
.article-hero h1, .article-page h1 { font-family: var(--serif); font-weight: 500; letter-spacing: -.055em; line-height: .98; }
.article-index { max-width: 900px; padding-top: 1.5rem; }
.article-card { background: var(--surface); border: 1px solid var(--line); border-radius: 1rem; box-shadow: var(--shadow-soft); padding: clamp(1.4rem, 3vw, 2.25rem); }
.article-card h3 { font-family: var(--serif); font-size: clamp(1.8rem, 3vw, 2.7rem); font-weight: 500; letter-spacing: -.04em; line-height: 1.05; margin: .55rem 0 .85rem; }
.article-card h3 a { color: var(--ink); text-decoration-thickness: 2px; text-underline-offset: .16em; }
.article-kicker { color: var(--blue); font-size: .78rem; font-weight: 800; letter-spacing: .13em; margin: 0; }
.text-link { color: var(--blue); font-weight: 750; }
.editorial-note { border-top: 1px solid var(--line); max-width: 900px; }
.article-page { margin: 0 auto; max-width: 900px; padding: clamp(3rem, 7vw, 6rem) clamp(1.2rem, 4vw, 2.5rem); }
.article-header { border-bottom: 1px solid var(--line); margin-bottom: 3rem; padding-bottom: 2rem; }
.article-number { align-items: center; background: var(--ink); border-radius: 999px; color: #fff; display: inline-flex; font-size: .78rem; font-weight: 800; letter-spacing: .08em; margin: 0 0 1rem; padding: .45rem .8rem; text-transform: uppercase; }
.article-page h1 { font-size: clamp(2.8rem, 7vw, 5.4rem); margin: .7rem 0 1.3rem; }
.article-page h2 { font-family: var(--serif); font-size: clamp(2rem, 4vw, 3rem); font-weight: 500; letter-spacing: -.045em; line-height: 1.05; margin: 3.4rem 0 1rem; }
.article-page h3 { font-size: 1.18rem; margin: 2rem 0 .6rem; }
.article-page p, .article-page li { font-size: 1.05rem; line-height: 1.7; }
.article-page blockquote { border-left: 4px solid var(--teal); color: var(--ink); font-family: var(--serif); font-size: 1.35rem; line-height: 1.45; margin: 1.4rem 0; padding: .5rem 0 .5rem 1.2rem; }
.article-meta { display: flex; flex-wrap: wrap; gap: 1rem 2.5rem; margin: 2rem 0 0; }
.article-meta div { max-width: 16rem; }
.article-meta dt { color: var(--muted); font-size: .78rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.article-meta dd { margin: .25rem 0 0; }
.article-callout { background: #edf8ff; border-left: 4px solid var(--blue); border-radius: 0 .75rem .75rem 0; line-height: 1.6; margin: 1.5rem 0; padding: 1.1rem 1.25rem; }
.spec-grid, .avoid-grid { display: grid; gap: 1rem; grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 1.5rem 0; }
.spec-grid div, .avoid-grid div { background: var(--surface); border: 1px solid var(--line); border-radius: .75rem; padding: 1rem; }
.spec-grid strong { display: block; margin-bottom: .25rem; }
.spec-grid span { color: var(--muted); line-height: 1.5; }
.avoid-grid h3 { margin: 0 0 .4rem; }
.avoid-grid p { color: var(--muted); font-size: .96rem; margin: 0; }
.article-steps { counter-reset: article-step; list-style: none; margin: 1.5rem 0; padding: 0; }
.article-steps li { border-bottom: 1px solid var(--line); padding: 1rem 0 1rem 3rem; position: relative; }
.article-steps li::before { background: var(--blue); border-radius: 50%; color: #fff; content: counter(article-step); counter-increment: article-step; font-size: .8rem; font-weight: 800; height: 1.65rem; left: 0; line-height: 1.65rem; position: absolute; text-align: center; top: 1.15rem; width: 1.65rem; }
.options-list { background: #fafcff; border: 1px solid var(--line); border-radius: .75rem; margin: 1rem 0; padding: .55rem 1.2rem .55rem 3.1rem; }
.options-list li { border-bottom: 1px solid var(--line); padding: .8rem .2rem; }
.options-list li:last-child { border-bottom: 0; }
.tag { color: var(--muted); display: block; font-size: .83rem; }
.tag.key { color: #087c82; font-weight: 750; }
.check-list { list-style: "✓  "; padding-left: 1.5rem; }
.check-list li { margin: .55rem 0; padding-left: .35rem; }
.references { padding-left: 1.25rem; }
.references li { margin: .8rem 0; }
.article-update { border-top: 1px solid var(--line); color: var(--muted); font-size: .93rem !important; margin-top: 2rem; padding-top: 1.2rem; }

@media (max-width: 620px) {
  .spec-grid, .avoid-grid { grid-template-columns: 1fr; }
  .article-meta { display: grid; grid-template-columns: 1fr; }
}