/* =========================================================
   Páginas «Exposición 1» a «Exposición 4»
   Se carga después de styles.css (base, cabecera y pie compartidos).
   Todas las clases propias llevan el prefijo dt-.
   ========================================================= */

.dt { --a: #5BB8F0; --t: #DDF1FD; }
.dt-e1 { --a: #5BB8F0; --t: #DDF1FD; }
.dt-e2 { --a: #FF7A6B; --t: #FFE3DF; }
.dt-e3 { --a: #FFD45E; --t: #FFF3C9; }
.dt-e4 { --a: #7FD8B5; --t: #D9F5E9; }

.dt-papel { height: 560px; }
.dt-sec { margin-top: 88px; }

/* ---------- Aparición al desplazarse ---------- */
@keyframes dt-sube { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
.js .dt-rev { opacity: 0; }
.js .dt-rev.is-in { animation: dt-sube .6s var(--curva) both; }

/* ---------- Migas ---------- */
.dt-migas {
  display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; padding-bottom: 10px;
  font-family: var(--f-mono); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--texto-2);
}
.dt-migas a { color: var(--texto-2); text-decoration: none; display: inline-flex; align-items: center; min-height: 44px; }
.dt-migas a:hover { color: var(--tinta); text-decoration: underline; text-underline-offset: 4px; }
.dt-migas strong { color: var(--tinta); font-weight: 700; }

/* ---------- Botones ---------- */
.dt-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 54px; padding: 0 28px; border-radius: 999px;
  font: 700 16px/1.2 var(--f-texto); text-decoration: none; text-align: center;
  transition: transform .2s var(--curva), box-shadow .2s var(--curva), background-color .2s;
}
.dt-btn--claro { background: #fff; color: var(--tinta); border: 2px solid var(--tinta); box-shadow: 0 4px 0 var(--tinta); }
.dt-btn--claro:hover { background: #FFE9A3; transform: translateY(-2px); box-shadow: 0 6px 0 var(--tinta); }
.dt-btn--claro:active { transform: translateY(4px); box-shadow: 0 1px 0 var(--tinta); }
.dt-btn--oscuro { background: var(--tinta); color: #fff; font-size: 15px; box-shadow: 0 5px 0 #0C1226; }
.dt-btn--oscuro:hover { transform: translateY(-2px); box-shadow: 0 7px 0 #0C1226; }
.dt-btn--oscuro:active { transform: translateY(4px); box-shadow: 0 1px 0 #0C1226; }
.dt-btn__f { display: inline-block; transition: transform .2s var(--curva); }
.dt-btn--oscuro:hover .dt-btn__f { transform: translate(3px, -3px); }

/* ---------- Panel de encabezado ---------- */
.dt-panel { margin-top: 22px; padding: 48px; background: var(--t); border-radius: 44px; }
.dt-fila1 { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 22px; }
.dt-etq {
  display: inline-block; padding: 6px 14px; background: var(--a); border: 2px solid var(--tinta); border-radius: 999px;
  font-family: var(--f-mono); font-weight: 500; font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--tinta);
}
.dt-fila2 { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 48px; align-items: start; }
.dt-fila2 h1 { margin: 0; font-family: var(--f-titulo); font-weight: 800; font-size: clamp(30px, 3.7vw, 52px); line-height: 1.05; letter-spacing: -.025em; color: var(--tinta); }
.dt-breve { margin: 22px 0 0; max-width: 54ch; font-size: 20px; line-height: 1.6; color: var(--texto-2); }
.dt-marco {
  margin: 0; border: 3px solid var(--tinta); border-radius: 28px; overflow: hidden; background: #fff;
  box-shadow: 0 8px 0 rgba(31, 42, 68, .16);
}
.dt-marco img { display: block; width: 100%; height: auto; }
.dt-pie-foto { margin: 22px 0 0; font-family: var(--f-mono); font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--texto-2); }
.dt-portada-col { min-width: 0; }
.dt-portada-col .dt-pie-foto { margin-top: 14px; }

.dt-fila3 {
  display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 24px 32px;
  margin-top: 40px; padding-top: 30px; border-top: 3px dotted rgba(31, 42, 68, .2);
}
.dt-rotulo { margin: 0 0 12px; font-family: var(--f-mono); font-weight: 500; font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--texto-2); }
.dt-integ { display: flex; flex-wrap: wrap; gap: 12px; margin: 0; padding: 0; list-style: none; }
.dt-integ li {
  display: inline-flex; align-items: center; gap: 12px; padding: 6px 20px 6px 6px; background: #fff; border: 2px solid var(--tinta); border-radius: 999px;
  box-shadow: 0 4px 0 rgba(31, 42, 68, .14); font-size: 15px; font-weight: 700; color: var(--tinta);
}
.dt-integ .dt-ini {
  display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; background: var(--a); border: 2px solid var(--tinta); border-radius: 50%;
  font-family: var(--f-mono); font-size: 12px; font-weight: 500; letter-spacing: .02em;
}
.dt-integ li.dt-vacio { padding: 10px 20px; background: transparent; border: 2px dashed #B8C5E3; box-shadow: none; color: #6C7BA0; }
.dt-accion { display: flex; flex-direction: column; align-items: flex-end; gap: 12px; max-width: 260px; margin-left: auto; }
.dt-accion .dt-nota { margin: 0; font-size: 14px; line-height: 1.5; color: var(--texto-2); text-align: right; }

/* ---------- Títulos de sección ---------- */
.dt-eyebrow {
  display: inline-flex; align-items: center; gap: 10px; margin: 0 0 12px;
  font-family: var(--f-mono); font-weight: 500; font-size: 12px; line-height: 1.4; letter-spacing: .14em; text-transform: uppercase; color: var(--texto-2);
}
.dt-eyebrow::before { content: ""; width: 8px; height: 8px; flex-shrink: 0; border-radius: 50%; background: var(--a); }
.dt-eyebrow--sol::before { background: #FFD45E; }
.dt-sec h2 { margin: 0; font-family: var(--f-titulo); font-weight: 800; font-size: clamp(30px, 3.4vw, 44px); line-height: 1.05; letter-spacing: -.02em; color: var(--tinta); }
.dt-apoyo { margin: 12px 0 0; font-size: 18px; line-height: 1.5; color: var(--texto-2); }
.dt-texto p { margin: 18px 0 0; max-width: 68ch; font-size: 19px; line-height: 1.7; color: #3A4A6E; }
.dt-texto h2 + p { margin-top: 22px; }

.dt-elementos { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin: 30px 0 0; padding: 0; list-style: none; }
.dt-elementos li { padding: 22px; background: var(--t); border-radius: 28px; }
.dt-elementos span { display: block; margin-bottom: 6px; font-family: var(--f-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--texto-2); }
.dt-elementos strong { font-family: var(--f-titulo); font-weight: 800; font-size: 22px; line-height: 1.15; color: var(--tinta); }

/* ---------- Temas ---------- */
.dt-temas { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 330px), 1fr)); gap: 16px; margin: 30px 0 0; padding: 0; list-style: none; }
.dt-temas li {
  display: flex; align-items: center; gap: 14px; padding: 14px 18px 14px 14px; background: #fff; border: 2px solid var(--borde); border-radius: 24px;
  font-size: 16px; font-weight: 700; line-height: 1.35; color: var(--tinta);
  transition: transform .2s var(--curva), border-color .2s, box-shadow .2s var(--curva);
}
.dt-temas li:hover { transform: translateY(-4px); border-color: var(--tinta); box-shadow: 0 6px 0 var(--tinta); }
.dt-temas li > span:first-child {
  display: inline-flex; align-items: center; justify-content: center; flex: 0 0 40px; width: 40px; height: 40px; background: var(--a); border: 2px solid var(--tinta); border-radius: 50%;
  font-family: var(--f-titulo); font-weight: 800; font-size: 16px;
}

/* ---------- Secciones centradas ---------- */
.dt-centro { text-align: center; }
.dt-figura { max-width: 860px; margin: 30px auto 0; }
.dt-figura .dt-marco { border-radius: 26px; box-shadow: 0 7px 0 rgba(31, 42, 68, .14); }
.dt-figura figcaption { margin-top: 14px; font-size: 15px; line-height: 1.5; color: var(--texto-2); }
.dt-figura figcaption b { display: block; margin-bottom: 4px; font-family: var(--f-mono); font-weight: 500; font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--tinta); }
.dt-centro .dt-btn { margin-top: 26px; }

/* ---------- Carrusel ---------- */
.dt-carr {
  position: relative; max-width: 960px; margin: 28px auto 0; aspect-ratio: 16 / 9; overflow: hidden; background: #fff;
  border: 3px solid var(--tinta); border-radius: 26px; box-shadow: 0 7px 0 rgba(31, 42, 68, .14); text-align: left;
}
.dt-pista { display: flex; height: 100%; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; scroll-behavior: smooth; overscroll-behavior-x: contain; }
.dt-pista::-webkit-scrollbar { display: none; }
.dt-slide { flex: 0 0 100%; min-width: 0; height: 100%; scroll-snap-align: start; scroll-snap-stop: always; }
.dt-slide img { display: block; width: 100%; height: 100%; object-fit: cover; user-select: none; }
.dt-carr--contain .dt-slide { padding-bottom: 40px; background: var(--t); }
.dt-carr--contain .dt-slide img { object-fit: contain; }
.dt-flecha {
  position: absolute; top: 50%; translate: 0 -50%; z-index: 2; display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; padding: 0;
  color: var(--tinta); background: #fff; border: 3px solid var(--tinta); border-radius: 50%; box-shadow: 0 4px 0 var(--tinta); cursor: pointer;
  transition: transform .18s var(--curva), background-color .18s;
}
.dt-flecha svg { width: 20px; height: 20px; }
.dt-flecha:hover { background: var(--a); transform: scale(1.1); }
.dt-flecha--ant { left: 12px; }
.dt-flecha--sig { right: 12px; }
.dt-cont {
  position: absolute; top: 12px; right: 12px; z-index: 2; padding: 5px 12px; background: #fff; border: 2px solid var(--tinta); border-radius: 999px;
  font-family: var(--f-mono); font-size: 12px; line-height: 1.2; color: var(--tinta);
}
.dt-puntos {
  position: absolute; left: 50%; bottom: 12px; translate: -50% 0; z-index: 2; display: flex; align-items: center; gap: 6px; padding: 6px 10px;
  background: #fff; border: 2px solid var(--tinta); border-radius: 999px;
}
.dt-punto { position: relative; width: 12px; height: 12px; padding: 0; background: #fff; border: 2px solid var(--tinta); border-radius: 999px; cursor: pointer; transition: width .2s var(--curva), background-color .2s; }
.dt-punto::after { content: ""; position: absolute; inset: -12px -3px; }
.dt-punto[aria-current="true"] { width: 26px; background: var(--a); }
.dt-carr--muchos .dt-puntos { gap: 4px; padding: 6px 8px; }
.dt-carr--muchos .dt-punto { width: 8px; height: 8px; border-width: 1.5px; }
.dt-carr--muchos .dt-punto[aria-current="true"] { width: 20px; }

/* ---------- Más exposiciones ---------- */
.dt-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-top: 20px; }
.dt-nav--una { grid-template-columns: minmax(0, 620px); }
.dt-nav a {
  display: block; padding: 22px 26px; background: #fff; border: 2px solid var(--borde); border-radius: 30px; text-decoration: none; color: var(--tinta);
  transition: transform .2s var(--curva), border-color .2s, box-shadow .2s var(--curva);
}
.dt-nav a:hover { transform: translateY(-5px); border-color: var(--tinta); box-shadow: 0 7px 0 var(--tinta); }
.dt-nav a span { display: block; margin-bottom: 8px; font-family: var(--f-mono); font-weight: 500; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--texto-2); }
.dt-nav a strong { font-family: var(--f-titulo); font-weight: 800; font-size: 22px; line-height: 1.15; }
.dt-nav .dt-sig { grid-column: 2; text-align: right; }
.dt-nav--una .dt-sig, .dt-nav--una a { grid-column: auto; text-align: left; }
.dt-volver { margin-top: 34px; }

@media (max-width: 900px) {
  .dt-sec { margin-top: 64px; }
  .dt-panel { padding: 28px 22px; border-radius: 32px; }
  .dt-fila2 { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .dt-elementos, .dt-nav { grid-template-columns: minmax(0, 1fr); }
  .dt-nav .dt-sig { grid-column: auto; }
  .dt-accion { align-items: flex-start; margin-left: 0; }
  .dt-accion .dt-nota { text-align: left; }
  .dt-texto p { font-size: 18px; }
}
@media (max-width: 520px) {
  .dt-carr { border-radius: 20px; }
  .dt-flecha { width: 44px; height: 44px; left: auto; }
  .dt-flecha--ant { left: 8px; } .dt-flecha--sig { right: 8px; }
  .dt-integ li { font-size: 14px; }
}
@media (prefers-reduced-motion: reduce) {
  .js .dt-rev { opacity: 1; animation: none; }
  .dt-btn, .dt-btn__f, .dt-temas li, .dt-nav a, .dt-flecha, .dt-punto { transition: none; }
  .dt-btn:hover, .dt-temas li:hover, .dt-nav a:hover, .dt-flecha:hover { transform: none; }
  .dt-pista { scroll-behavior: auto; }
}