/* Multiblog — sistema visual público. docs/Design.md es la fuente; este
   archivo es su única implementación (docs/slices/04.md T1). */

:root {
  --color-bg: #f2f2f3;
  --color-text: #1d1f20;
  --rule-strong: rgba(29, 31, 32, 0.16);
  --rule-weak: rgba(29, 31, 32, 0.1);

  --font-heading: "Barlow Condensed", system-ui, sans-serif;
  --font-body: "Barlow", system-ui, sans-serif;
  --font-serif: "Literata", Georgia, serif;

  /* El servidor sólo inyecta --sp (accent_color del espacio) en la raíz del
     shell de espacio; --sp-deep y --sp-line se derivan acá siempre con la
     misma fórmula (Design.md §1), así un espacio nuevo no necesita CSS. */
  --sp: #5980a6;
  --sp-deep: color-mix(in oklab, var(--sp) 72%, #101110);
  --sp-line: color-mix(in oklab, var(--sp) 32%, #f2f2f3);

  /* Todas las fotos van en blanco y negro (Design.md §1), expuesto acá
     para poder cambiarlo globalmente. */
  --ph: grayscale(1) contrast(1.08);
  --ph-gradient: linear-gradient(180deg, rgba(15, 16, 17, 0.12) 0%, rgba(15, 16, 17, 0.78) 100%);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  background: var(--color-bg);
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 600;
}

p {
  margin: 0;
}

a {
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
}

/* — marcos .blueprint: tarjetas de espacio y galería de post — */
.blueprint {
  position: relative;
  border: 1px solid var(--rule-strong);
}
.blueprint > .corner {
  position: absolute;
  width: 11px;
  height: 11px;
  color: color-mix(in srgb, var(--color-text) 55%, transparent);
}
.blueprint > .corner::before,
.blueprint > .corner::after {
  content: "";
  position: absolute;
  background: currentColor;
}
.blueprint > .corner::before {
  left: 5px;
  top: 0;
  width: 1px;
  height: 100%;
}
.blueprint > .corner::after {
  top: 5px;
  left: 0;
  width: 100%;
  height: 1px;
}
.blueprint > .corner.tl {
  top: -6px;
  left: -6px;
}
.blueprint > .corner.tr {
  top: -6px;
  right: -6px;
}
.blueprint > .corner.bl {
  bottom: -6px;
  left: -6px;
}
.blueprint > .corner.br {
  bottom: -6px;
  right: -6px;
}

/* — tags — */
.tag {
  display: inline-flex;
  align-items: center;
  font-size: 11px;
  letter-spacing: 0.02em;
  padding: 3px 10px;
  text-decoration: none;
}
.tag-outline {
  border: 1px solid var(--sp);
  color: var(--sp-deep);
}

/* — botones — */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  padding: 8px 14px;
  border: 1px solid var(--rule-strong);
  color: var(--color-text);
  background: transparent;
}
.btn-secondary:hover {
  background: color-mix(in srgb, var(--color-text) 7%, transparent);
}

/* ══════════════════════════════════════════════════════════════════════
   Shell central — divermente.com (Design.md §2)
   ══════════════════════════════════════════════════════════════════════ */

.central {
  max-width: 1200px;
  margin-inline: auto;
}

.central-hero {
  position: relative;
  height: 520px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 34px 48px 44px;
  background: var(--color-bg);
  color: var(--color-text);
}
/* Sin foto: fondo papel, texto en tinta. Con foto (S7, Design.md §2.1):
   imagen a sangre en blanco y negro detrás, degradado y texto en blanco. */
.central-hero.has-cover {
  color: #fff;
}
.central-hero__photo {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: var(--ph);
}
.central-hero.has-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: var(--ph-gradient);
}
.central-hero__nav,
.central-hero > div:last-child {
  position: relative;
  z-index: 2;
}
.central-hero__nav {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.central-hero__brand {
  font-family: var(--font-heading);
  font-size: 15px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.central-hero__links {
  display: flex;
  gap: 26px;
  font-size: 13px;
  letter-spacing: 0.04em;
}
.central-hero__links a {
  text-decoration: none;
}
.central-hero h1 {
  font-size: 66px;
  line-height: 1.02;
  max-width: 15ch;
}
.central-hero__lead {
  margin: 18px 0 0;
  font-size: 17px;
  max-width: 54ch;
}

.central-section {
  padding: 40px 48px 44px;
  border-top: 1px solid var(--rule-strong);
}
.central-section__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 26px;
}
.central-section__title {
  font-family: var(--font-heading);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.central-section__count {
  font-size: 12px;
  color: color-mix(in srgb, var(--color-text) 50%, transparent);
}

.space-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.space-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 22px 22px 20px;
  text-decoration: none;
  color: var(--color-text);
}
.space-card__name {
  display: flex;
  align-items: center;
  gap: 9px;
}
.space-card__dot {
  width: 9px;
  height: 9px;
  display: block;
}
.space-card__name span:last-child {
  font-family: var(--font-heading);
  font-size: 22px;
}
.space-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.55;
  color: color-mix(in srgb, var(--color-text) 70%, transparent);
}
.space-card__meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-top: 14px;
  margin-top: auto;
  border-top: 1px solid var(--rule-weak);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: color-mix(in srgb, var(--color-text) 55%, transparent);
}

.latest-list {
  display: flex;
  flex-direction: column;
}
.latest-item {
  display: grid;
  grid-template-columns: 18px 1fr 92px;
  align-items: baseline;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--rule-weak);
  text-decoration: none;
  color: var(--color-text);
}
.latest-item:last-child {
  border-bottom: none;
}
.latest-item__dot {
  width: 8px;
  height: 8px;
  display: block;
  transform: translateY(-2px);
}
.latest-item__title {
  display: block;
  font-family: var(--font-heading);
  font-size: 23px;
  line-height: 1.2;
}
.latest-item__excerpt {
  display: block;
  margin-top: 5px;
  font-size: 14px;
  color: color-mix(in srgb, var(--color-text) 62%, transparent);
}
.latest-item__date {
  text-align: right;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: color-mix(in srgb, var(--color-text) 50%, transparent);
}

.tag-row {
  display: flex;
  align-items: baseline;
  gap: 36px;
  flex-wrap: wrap;
}
.tag-row__title {
  font-family: var(--font-heading);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  white-space: nowrap;
}
.tag-row__tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.central-footer {
  padding: 18px 48px 26px;
  border-top: 1px solid var(--rule-strong);
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: color-mix(in srgb, var(--color-text) 50%, transparent);
}

/* ══════════════════════════════════════════════════════════════════════
   Shell de espacio — {espacio}.divermente.com (Design.md §3)
   ══════════════════════════════════════════════════════════════════════ */

.space-shell {
  max-width: 1040px;
  margin-inline: auto;
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr);
}
.space-canto {
  background: var(--sp);
}

.space-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 40px;
  border-bottom: 2px solid var(--sp);
}
.space-nav__name {
  font-family: var(--font-heading);
  font-size: 17px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.space-nav__links {
  display: flex;
  gap: 24px;
  font-size: 13px;
  letter-spacing: 0.04em;
}
.space-nav__links a {
  text-decoration: none;
}
.space-nav__links a:last-child {
  color: var(--sp-deep);
}

.space-hero {
  position: relative;
  height: 320px;
  display: flex;
  align-items: flex-end;
  padding: 0 40px 32px;
  background: var(--color-bg);
  color: var(--color-text);
}
/* Sin foto: fondo papel, filete y H1 en tinta. Con foto (S7): imagen a
   sangre en blanco y negro detrás, degradado y filete/título/entradilla en
   blanco. */
.space-hero.has-cover {
  color: #fff;
}
.space-hero__photo {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: var(--ph);
}
.space-hero.has-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: var(--ph-gradient);
}
.space-hero__inner {
  position: relative;
  z-index: 2;
  width: 100%;
}
.space-hero__rule {
  width: 64px;
  height: 5px;
  background: var(--sp);
  margin-bottom: 16px;
}
.space-hero h1 {
  font-size: 54px;
  line-height: 1.02;
}
.space-hero__lead {
  margin: 10px 0 0;
  font-size: 17px;
  max-width: 54ch;
  font-family: var(--font-serif);
}

.category-bar {
  display: flex;
  border-bottom: 1px solid var(--rule-strong);
}
.category-bar__item {
  flex: 1;
  text-align: center;
  padding: 13px 0;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: color-mix(in srgb, var(--color-text) 65%, transparent);
  border-left: 1px solid var(--rule-weak);
}
.category-bar__item:first-child {
  border-left: none;
}
.category-bar__item.is-active {
  color: var(--color-text);
  border-bottom: 3px solid var(--sp);
}

.post-list {
  padding: 14px 40px 24px;
  max-width: 800px;
}
.post-list__item {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 20px;
  padding: 28px 0;
  border-bottom: 1px solid var(--sp-line);
  text-decoration: none;
  color: var(--color-text);
}
.post-list__item:last-child {
  border-bottom: none;
}
.post-list__index {
  font-family: var(--font-heading);
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--sp);
  padding-top: 4px;
}
.post-list__meta {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-text) 55%, transparent);
  margin-bottom: 8px;
}
.post-list__meta-category {
  color: var(--sp-deep);
}
.post-list__title {
  font-family: var(--font-heading);
  font-size: 34px;
  line-height: 1.08;
}
.post-list__excerpt {
  margin: 8px 0 0;
  font-family: var(--font-serif);
  font-size: 16.5px;
  line-height: 1.65;
  max-width: 62ch;
  color: color-mix(in srgb, var(--color-text) 75%, transparent);
}

.pagination {
  padding: 0 40px 30px;
  display: flex;
  gap: 16px;
  align-items: center;
}
.pagination__count {
  font-size: 12px;
  color: color-mix(in srgb, var(--color-text) 50%, transparent);
}

.space-footer {
  padding: 14px 40px 24px;
  border-top: 1px solid var(--rule-strong);
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: color-mix(in srgb, var(--color-text) 50%, transparent);
}

/* ══════════════════════════════════════════════════════════════════════
   Página de post (Design.md §3, "Página de post")
   ══════════════════════════════════════════════════════════════════════ */

.post-panorama {
  height: 248px;
  background: var(--color-bg);
}
/* Sin foto: fondo papel. Con foto (S7): imagen a sangre en blanco y negro,
   misma altura, sin texto encima (Design.md §3: "el recorte es libre") y
   misma franja de --sp debajo. */
.post-panorama__photo {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: var(--ph);
}
.post-panorama__rule {
  height: 5px;
  background: var(--sp);
}

.post-context {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 40px 0;
}
.post-context__meta {
  font-size: 12.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-text) 55%, transparent);
}
.post-context__meta strong {
  font-weight: inherit;
  color: var(--sp-deep);
}
.post-context__caption {
  font-size: 12px;
  color: color-mix(in srgb, var(--color-text) 50%, transparent);
  text-align: right;
  max-width: 40ch;
}

.post-article {
  padding: 24px 0 56px;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.post-article__lead {
  width: 100%;
  max-width: 640px;
}
.post-article h1 {
  font-size: 54px;
  line-height: 1.02;
}
.post-lead {
  margin: 18px 0 0;
  font-family: var(--font-serif);
  font-size: 20px;
  line-height: 1.55;
  color: color-mix(in srgb, var(--color-text) 78%, transparent);
}

.post-body {
  width: 100%;
  max-width: 640px;
  margin-top: 32px;
  font-family: var(--font-serif);
  font-size: 19px;
  line-height: 1.7;
}
.post-body p {
  margin: 0 0 24px;
}
.post-body h2 {
  font-size: 34px;
  line-height: 1.1;
  margin: 48px 0 14px;
}

/* Bloques ricos (Design.md §3, punto 6), producidos por el registro de
   bloques (src/markdown/blocks/, S6). */
.callout {
  width: 100%;
  max-width: 640px;
  margin: 0 0 28px;
  border-left: 4px solid var(--sp);
  background: color-mix(in srgb, var(--sp) 9%, transparent);
  padding: 20px 24px;
}
.callout__label {
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sp-deep);
  margin-bottom: 6px;
}
.callout p {
  margin: 0;
  font-size: 17.5px;
  line-height: 1.6;
}

.gallery {
  width: 100%;
  max-width: 860px;
  margin: 16px 0 8px;
}
.gallery__grid {
  display: grid;
  grid-template-columns: repeat(var(--gallery-cols, 3), minmax(0, 1fr));
  gap: 14px;
}
.gallery__frame {
  aspect-ratio: 4 / 3;
}
.gallery figcaption {
  margin-top: 10px;
  font-size: 12px;
  color: color-mix(in srgb, var(--color-text) 55%, transparent);
}

.youtube-embed {
  position: relative;
  width: 100%;
  max-width: 640px;
  aspect-ratio: 16 / 9;
  margin: 0 0 28px;
}
.youtube-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.code-block {
  width: 100%;
  max-width: 800px;
  margin: 0 0 24px;
  padding: 22px 24px;
  background: #e9e9ea;
  border: 1px solid var(--rule-strong);
  overflow: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 14px;
  line-height: 1.65;
}

.post-tags {
  width: 100%;
  max-width: 640px;
  margin-top: 44px;
  padding-top: 24px;
  border-top: 1px solid var(--sp-line);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.post-adjacent {
  width: 100%;
  max-width: 640px;
  margin-top: 22px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  font-size: 13.5px;
}
.post-adjacent a {
  text-decoration: none;
  color: var(--sp-deep);
  max-width: 44%;
}
.post-adjacent a:last-child {
  text-align: right;
}

.post-footer {
  padding: 14px 40px 24px;
  border-top: 1px solid var(--rule-strong);
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: color-mix(in srgb, var(--color-text) 50%, transparent);
  word-break: break-all;
}