@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,opsz,wght@0,8..60,400;0,8..60,500;0,8..60,600;1,8..60,400&family=Inter:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --color-ink: #16233B;
  --color-primary: #0D3B7A;
  --color-secondary: #1A6BB5;
  --color-wash: #EEF3FA;
  --color-paper: #FDFDFB;
  --color-muted: #5B6B82;
  --color-line: #D9E3F2;

  --font-display: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;

  --measure: 68ch;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-secondary); text-decoration: none; }
a:hover { color: var(--color-primary); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-secondary);
}

/* ---------- Masthead ---------- */

.masthead {
  position: relative;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-wash);
  background-size: cover;
  background-position: center;
  transition: background-image 0.2s ease;
}

.masthead__inner {
  position: relative;
  max-width: 920px;
  margin: 0 auto;
  padding: 3.25rem 1.5rem 2.5rem;
}

.masthead__brand {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.masthead__name {
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-primary);
}

.masthead__name a { color: inherit; }

nav.masthead__nav {
  display: flex;
  gap: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

nav.masthead__nav a { color: var(--color-ink); border-bottom: 1px solid transparent; }
nav.masthead__nav a:hover { color: var(--color-primary); border-color: var(--color-primary); }

.masthead__tagline {
  margin-top: 1.1rem;
  max-width: 46ch;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--color-ink);
  opacity: 0.85;
}

/* Photo-backed masthead: light text over a blue gradient scrim so any
   photo stays legible without needing to pick "the right" image. */
.masthead--photo {
  min-height: 260px;
  display: flex;
  align-items: flex-end;
}

.masthead--photo .masthead__name,
.masthead--photo .masthead__name a { color: #fff; }
.masthead--photo nav.masthead__nav a { color: rgba(255,255,255,0.88); }
.masthead--photo nav.masthead__nav a:hover { color: #fff; border-color: #fff; }
.masthead--photo .masthead__tagline { color: rgba(255,255,255,0.92); opacity: 1; }

/* ---------- Layout ---------- */

main.page {
  max-width: 920px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}

section + section { margin-top: 3.5rem; }

.section__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--color-line);
  padding-bottom: 0.6rem;
  margin-bottom: 0.25rem;
}

.section__title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--color-primary);
}

.section__count {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-muted);
}

/* ---------- Index / TOC list ---------- */

ol.toc {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc__item {
  display: grid;
  grid-template-columns: 2.6rem 1fr auto;
  align-items: baseline;
  gap: 1rem;
  padding: 1.05rem 0;
  border-bottom: 1px solid var(--color-line);
  transition: background-color 0.15s ease;
}

.toc__item:hover { background-color: var(--color-wash); }

.toc__num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-muted);
}

.toc__body { min-width: 0; }

.toc__title {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--color-ink);
}

.toc__item:hover .toc__title { color: var(--color-primary); }

.toc__title .arrow {
  display: inline-block;
  transform: translateX(-4px);
  opacity: 0;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.toc__item:hover .toc__title .arrow { transform: translateX(0); opacity: 1; }

.toc__summary {
  margin-top: 0.25rem;
  font-size: 0.92rem;
  color: var(--color-muted);
  max-width: 62ch;
}

.toc__date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-muted);
  white-space: nowrap;
}

.toc__pdf-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  color: var(--color-secondary);
  border: 1px solid var(--color-secondary);
  border-radius: 3px;
  padding: 0.05rem 0.35rem;
}

/* ---------- Empty states ---------- */

.empty-state {
  padding: 2rem 0;
  color: var(--color-muted);
  font-style: italic;
}

.empty-state a { font-style: normal; }

/* ---------- Article page ---------- */

.article__header {
  margin-bottom: 2.25rem;
}

.article__back {
  display: inline-block;
  margin-bottom: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.article__title {
  font-family: var(--font-display);
  font-size: 2.1rem;
  line-height: 1.2;
  font-weight: 600;
  color: var(--color-ink);
  margin: 0.4rem 0 0.6rem;
}

.article__meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-muted);
}

.prose {
  max-width: var(--measure);
  font-size: 1.06rem;
}

.prose p {
  margin: 1.1rem 0;
  text-align: justify;
  text-justify: inter-word;
  hyphens: auto;
  -webkit-hyphens: auto;
}

.prose h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--color-primary);
  margin-top: 2.4rem;
  border-top: 1px solid var(--color-line);
  padding-top: 1.4rem;
}

.prose h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--color-ink);
  margin-top: 1.8rem;
}


.prose a { text-decoration: underline; text-decoration-color: var(--color-line); text-underline-offset: 3px; }

.prose blockquote {
  margin: 1.6rem 0;
  padding: 0.2rem 0 0.2rem 1.2rem;
  border-left: 3px solid var(--color-secondary);
  color: var(--color-muted);
  font-family: var(--font-display);
  font-style: italic;
}

.prose ul, .prose ol { padding-left: 1.4rem; }
.prose li { margin: 0.4rem 0; }

.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--color-wash);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

.prose pre {
  background: var(--color-ink);
  color: var(--color-wash);
  padding: 1rem 1.2rem;
  border-radius: 4px;
  overflow-x: auto;
}
.prose pre code { background: none; padding: 0; color: inherit; }

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  margin: 1.6rem 0;
}
.prose th, .prose td {
  border: 1px solid var(--color-line);
  padding: 0.5rem 0.7rem;
  text-align: left;
}
.prose th { font-family: var(--font-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.04em; background: var(--color-wash); }

/* ---------- Forms (login / admin) ---------- */

.card {
  max-width: 480px;
  margin: 4rem auto;
  padding: 2rem;
  border: 1px solid var(--color-line);
  border-radius: 6px;
  background: var(--color-wash);
}

.field { margin-bottom: 1.1rem; }
.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 0.35rem;
}

input[type="text"], input[type="password"], input[type="date"], textarea, input[type="file"] {
  width: 100%;
  padding: 0.6rem 0.7rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-ink);
  background: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: 4px;
}

textarea { min-height: 220px; font-family: var(--font-mono); font-size: 0.88rem; resize: vertical; }

button, .btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-paper);
  background: var(--color-primary);
  border: 1px solid var(--color-primary);
  border-radius: 4px;
  padding: 0.6rem 1.1rem;
  cursor: pointer;
}
button:hover, .btn:hover { background: var(--color-secondary); border-color: var(--color-secondary); color: var(--color-paper); }

.btn--ghost {
  background: transparent;
  color: var(--color-primary);
}
.btn--ghost:hover { background: var(--color-wash); color: var(--color-primary); }

.btn--danger { background: transparent; color: #7A2E2E; border-color: #C9B7B7; }
.btn--danger:hover { background: #F7ECEC; color: #7A2E2E; border-color: #C9B7B7; }

.flash {
  max-width: 920px;
  margin: 1.25rem auto 0;
  padding: 0 1.5rem;
}
.flash__item {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.6rem 0.9rem;
  border-radius: 4px;
  margin-bottom: 0.6rem;
  border: 1px solid var(--color-line);
}
.flash__item--success { background: var(--color-wash); color: var(--color-primary); border-color: var(--color-secondary); }
.flash__item--error { background: #F7ECEC; color: #7A2E2E; border-color: #C9B7B7; }

.admin__panel {
  border: 1px solid var(--color-line);
  border-radius: 6px;
  padding: 1.6rem;
  margin-bottom: 1.5rem;
}

.admin__panel h2 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--color-primary);
  margin-top: 0;
}

.admin__panel .hint {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: -0.5rem;
  margin-bottom: 1rem;
}

.admin__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--color-line);
  font-size: 0.9rem;
}
.admin__row:last-child { border-bottom: none; }

/* ---------- Footer ---------- */

footer.site-footer {
  max-width: 920px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 3rem;
  border-top: 1px solid var(--color-line);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-muted);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ---------- Responsive ---------- */

@media (max-width: 640px) {
  .masthead__inner { padding: 2.25rem 1.25rem 1.75rem; }
  .masthead__name { font-size: 1.55rem; }
  main.page { padding: 2rem 1.25rem 3.5rem; }
  .toc__item { grid-template-columns: 2rem 1fr; }
  .toc__date { grid-column: 2; }
  .article__title { font-size: 1.6rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

/* ---------- Author bylines (index + article/pdf) ---------- */

.toc__authors {
  margin-top: 0.15rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-secondary);
}
.toc__authors a { color: inherit; }
.toc__authors a:hover { color: var(--color-primary); }

.article__authors {
  margin-top: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-secondary);
}
.article__authors a { color: inherit; text-decoration: underline; text-decoration-color: var(--color-line); }
.article__authors a:hover { color: var(--color-primary); }

/* ---------- Quiénes somos / author cards ---------- */

.author-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
}

.author-card {
  border: 1px solid var(--color-line);
  border-radius: 8px;
  padding: 1.4rem;
  text-align: left;
}

.author-card__photo, .author-profile__photo {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--color-wash);
  border: 1px solid var(--color-line);
}

.author-card__photo--placeholder, .author-profile__photo--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--color-secondary);
  background: var(--color-wash);
}

.author-card__name {
  margin-top: 0.9rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--color-ink);
}

.author-card__role {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--color-secondary);
  text-transform: uppercase;
  margin-top: 0.2rem;
}

.author-card__bio {
  margin-top: 0.7rem;
  font-size: 0.88rem;
  color: var(--color-muted);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.author-card__link {
  display: inline-block;
  margin-top: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ---------- Author profile page ---------- */

.author-profile {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  flex-wrap: wrap;
}

.author-profile__body { flex: 1; min-width: 240px; }

.author-profile__name {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--color-ink);
  margin: 0 0 0.2rem;
}

.author-profile__role {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-secondary);
}

.author-profile__bio {
  margin-top: 1rem;
  max-width: 62ch;
  font-size: 1rem;
  white-space: pre-line;
}

/* ---------- Admin: image gallery ---------- */

.img-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 0.8rem;
  margin-top: 1rem;
}

.img-gallery__item {
  border: 1px solid var(--color-line);
  border-radius: 6px;
  overflow: hidden;
  background: var(--color-paper);
}

.img-gallery__item img {
  width: 100%;
  height: 90px;
  object-fit: cover;
  display: block;
}

.img-gallery__meta {
  padding: 0.5rem;
}

.img-gallery__path {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 0.3rem;
  border: 1px solid var(--color-line);
  border-radius: 3px;
  background: var(--color-wash);
  margin-bottom: 0.4rem;
}

.img-gallery__actions { display: flex; gap: 0.4rem; }
.img-gallery__actions form { flex: 1; }
.img-gallery__actions button { width: 100%; font-size: 0.65rem; padding: 0.4rem 0.5rem; }

.cover-current {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.2rem;
  padding: 0.8rem;
  background: var(--color-wash);
  border-radius: 6px;
}
.cover-current img {
  width: 140px;
  height: 70px;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid var(--color-line);
}
.cover-current__empty {
  width: 140px;
  height: 70px;
  border-radius: 4px;
  border: 1px dashed var(--color-line);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--color-muted);
  text-align: center;
  padding: 0.3rem;
}

.badge-active {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-primary);
  border: 1px solid var(--color-secondary);
  border-radius: 3px;
  padding: 0.1rem 0.35rem;
  margin-left: 0.4rem;
}

/* ---------- Admin: author checkboxes on upload forms ---------- */

.author-checks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.2rem;
  padding: 0.6rem 0;
}
.author-checks label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  text-transform: none;
  letter-spacing: normal;
  color: var(--color-ink);
}
.author-checks input[type="checkbox"] { width: auto; }

.admin__photo-preview {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--color-line);
  margin-bottom: 0.6rem;
}

/* ---------- X (Twitter) link buttons ---------- */

.btn-x {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  color: var(--color-ink);
  background: transparent;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
  text-decoration: none;
}
.btn-x:hover {
  color: #fff;
  background: var(--color-ink);
  border-color: var(--color-ink);
}