/* CPN Guías — hoja de estilos compartida
   Layout: banda azul con el logo arriba; debajo, índice lateral fijo + columna de lectura de ~68ch.
   Para cambiar colores, edite solo los tokens de :root. */
:root {
  --azul: #005ba9;          /* azul CPN */
  --azul-hondo: #0a2a4f;    /* navy para textos y banda oscura */
  --magenta: #ec008c;
  --magenta-suave: #fde6f3;
  --papel: #ffffff;
  --papel-2: #f3f6fb;       /* neutro con tinte azul */
  --tinta: #13233a;
  --tinta-2: #4a5a70;
  --linea: #d9e1ec;
  --banda: #005ba9;
  --banda-2: #004a8c;
  --ok: #0f7a4a;

  --f-display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --f-texto: "Atkinson Hyperlegible", "Segoe UI", system-ui, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --r: 10px;
  --ancho: 68ch;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --papel: #0b1626; --papel-2: #12213a; --tinta: #e8eef7; --tinta-2: #a9b8cc;
    --linea: #24365a; --azul: #5aa6ee; --azul-hondo: #cfe3ff; --magenta: #ff4db0;
    --magenta-suave: #3a0f2a; --banda: #0a3b72; --banda-2: #082f5c; --ok: #4fd08f;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --papel: #0b1626; --papel-2: #12213a; --tinta: #e8eef7; --tinta-2: #a9b8cc;
  --linea: #24365a; --azul: #5aa6ee; --azul-hondo: #cfe3ff; --magenta: #ff4db0;
  --magenta-suave: #3a0f2a; --banda: #0a3b72; --banda-2: #082f5c; --ok: #4fd08f;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
body {
  margin: 0; background: var(--papel); color: var(--tinta);
  font-family: var(--f-texto); font-size: 1.0625rem; line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: var(--azul); text-underline-offset: 3px; }
a:hover { color: var(--magenta); }
:focus-visible { outline: 3px solid var(--magenta); outline-offset: 2px; border-radius: 4px; }
h1, h2, h3 { font-family: var(--f-display); line-height: 1.15; text-wrap: balance; color: var(--azul-hondo); margin: 0; }
code, .mono { font-family: var(--f-mono); font-size: .9em; }

/* ---------- Banda superior ---------- */
.banda { background: var(--banda); color: #fff; padding-inline: 16px; }
.banda-in { max-width: 1120px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 14px; flex-wrap: wrap; }
.banda a.marca { display: flex; align-items: center; gap: 14px; color: #fff; text-decoration: none; min-width: 0; }
.banda .logo { height: 58px; width: auto; }
.banda .sitio { font-family: var(--f-display); font-weight: 700; font-size: 1.05rem; letter-spacing: .02em; padding-left: 14px; border-left: 2px solid rgba(255,255,255,.35); white-space: nowrap; }
.banda .sitio small { display: block; font-family: var(--f-texto); font-weight: 400; font-size: .78rem; opacity: .8; letter-spacing: .06em; text-transform: uppercase; }
.banda nav { display: flex; gap: 6px; flex-wrap: wrap; }
.banda nav a { color: #fff; text-decoration: none; font-size: .9rem; padding: 6px 12px; border-radius: 999px; border: 1px solid rgba(255,255,255,.35); }
.banda nav a:hover, .banda nav a[aria-current="page"] { background: #fff; color: #005ba9; }
.filete { height: 5px; background: var(--magenta); }
@media (max-width: 560px) { .banda .logo { height: 44px; } .banda .sitio { display: none; } }

/* ---------- Contenedor ---------- */
.pagina { padding-inline: 16px; }
.pagina-in { max-width: 1120px; margin: 0 auto; padding-block: 40px 72px; }

/* ---------- Portada (hub) ---------- */
.intro { max-width: 60ch; display: grid; gap: 12px; margin-bottom: 36px; }
.eyebrow { font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: var(--magenta); font-weight: 700; }
.intro h1 { font-size: clamp(2rem, 4.5vw, 2.9rem); }
.intro p { margin: 0; color: var(--tinta-2); font-size: 1.12rem; }

.areas { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 18px; }
.area { display: grid; gap: 10px; align-content: start; padding: 22px; border: 1px solid var(--linea); border-radius: var(--r); background: var(--papel); text-decoration: none; color: inherit; min-width: 0; }
a.area:hover { border-color: var(--azul); box-shadow: 0 6px 22px rgba(0,91,169,.12); color: inherit; }
.area h2 { font-size: 1.35rem; }
.area p { margin: 0; color: var(--tinta-2); font-size: .98rem; }
.area ul { margin: 0; padding-left: 1.1em; color: var(--tinta-2); font-size: .95rem; }
.area .ir { color: var(--azul); font-weight: 700; font-size: .95rem; }
.area.pronto { background: var(--papel-2); border-style: dashed; }
.area.pronto h2 { color: var(--tinta-2); }
.chip { justify-self: start; font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; font-weight: 700; padding: 3px 10px; border-radius: 999px; background: var(--magenta-suave); color: var(--magenta); }
.chip.gris { background: var(--linea); color: var(--tinta-2); }

/* ---------- Guía con índice ---------- */
.guia { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 48px; align-items: start; }
.indice { position: sticky; top: calc(env(safe-area-inset-top, 0px) + 20px); display: grid; gap: 4px; font-size: .95rem; }
.indice .t { font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; color: var(--tinta-2); font-weight: 700; margin-bottom: 6px; }
.indice a { display: grid; grid-template-columns: 26px 1fr; gap: 8px; align-items: baseline; padding: 7px 10px; border-radius: 8px; color: var(--tinta); text-decoration: none; }
.indice a:hover { background: var(--papel-2); color: var(--tinta); }
.indice a b { font-family: var(--f-mono); font-size: .8rem; color: var(--magenta); }
@media (max-width: 880px) {
  .guia { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .indice { position: static; display: flex; flex-wrap: wrap; gap: 6px; }
  .indice .t { flex-basis: 100%; margin-bottom: 0; }
  .indice a { display: inline-flex; gap: 6px; padding: 5px 12px; border: 1px solid var(--linea); border-radius: 999px; font-size: .88rem; }
}
.lectura { max-width: var(--ancho); min-width: 0; display: grid; gap: 56px; }
.cabeza { display: grid; gap: 10px; }
.cabeza h1 { font-size: clamp(1.9rem, 4vw, 2.6rem); }
.cabeza p { margin: 0; color: var(--tinta-2); font-size: 1.1rem; }

section.parte { display: grid; gap: 18px; scroll-margin-top: 24px; }
.parte-tit { display: grid; gap: 6px; padding-top: 22px; border-top: 2px solid var(--linea); }
.parte-tit .num { font-family: var(--f-mono); font-size: .8rem; color: var(--magenta); font-weight: 700; letter-spacing: .08em; }
.parte-tit h2 { font-size: clamp(1.5rem, 3vw, 1.9rem); }
.parte-tit p { margin: 0; color: var(--tinta-2); }

/* Pasos numerados (son una secuencia real) */
ol.pasos { list-style: none; margin: 0; padding: 0; display: grid; gap: 26px; counter-reset: paso; }
ol.pasos > li { counter-increment: paso; display: grid; grid-template-columns: 36px minmax(0, 1fr); gap: 14px; }
ol.pasos > li::before {
  content: counter(paso); width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center;
  background: var(--azul); color: #fff; font-family: var(--f-display); font-weight: 700; font-size: 1rem;
}
:root[data-theme="dark"] ol.pasos > li::before { color: #0b1626; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) ol.pasos > li::before { color: #0b1626; } }
.paso { display: grid; gap: 10px; min-width: 0; padding-top: 5px; }
.paso p { margin: 0; }
.paso ul { margin: 0; padding-left: 1.2em; display: grid; gap: 4px; }
.btn-ui { font-weight: 700; color: var(--azul-hondo); background: var(--papel-2); border: 1px solid var(--linea); border-radius: 6px; padding: 1px 7px; white-space: nowrap; font-size: .95em; }

/* Capturas */
figure.captura { margin: 4px 0 0; border: 1px solid var(--linea); border-radius: var(--r); overflow: hidden; background: var(--papel-2); }
figure.captura img { display: block; width: 100%; }
figure.captura.estrecha { max-width: 460px; }
figure.captura figcaption { font-size: .85rem; color: var(--tinta-2); padding: 8px 12px; border-top: 1px solid var(--linea); background: var(--papel); }
figure.captura.pendiente { border: 2px dashed var(--linea); }
figure.captura.pendiente .hueco { min-height: 150px; display: grid; place-items: center; text-align: center; padding: 20px; color: var(--tinta-2); font-size: .9rem; gap: 6px; }
figure.captura.pendiente .hueco strong { color: var(--magenta); font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; }

/* Notas */
.nota { border-radius: var(--r); padding: 14px 16px; background: var(--papel-2); border: 1px solid var(--linea); display: grid; gap: 6px; font-size: .98rem; }
.nota.importante { background: var(--magenta-suave); border-color: transparent; }
.nota .n-t { font-weight: 700; color: var(--azul-hondo); }
.nota.importante .n-t { color: var(--magenta); }
.nota p { margin: 0; }

/* Ficha del semestre */
.ficha { border: 2px solid var(--azul); border-radius: 14px; overflow: hidden; }
.ficha-cab { background: var(--azul); color: #fff; padding: 14px 18px; display: flex; justify-content: space-between; align-items: baseline; gap: 10px; flex-wrap: wrap; }
:root[data-theme="dark"] .ficha-cab { color: #0b1626; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .ficha-cab { color: #0b1626; } }
.ficha-cab h3 { color: inherit; font-size: 1.15rem; }
.ficha-cab span { font-size: .85rem; opacity: .9; }
.ficha dl { margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.ficha dl div { padding: 14px 18px; border-bottom: 1px solid var(--linea); border-right: 1px solid var(--linea); display: grid; gap: 2px; }
.ficha dt { font-size: .74rem; letter-spacing: .1em; text-transform: uppercase; color: var(--tinta-2); font-weight: 700; }
.ficha dd { margin: 0; font-family: var(--f-display); font-weight: 700; font-size: 1.2rem; color: var(--azul-hondo); font-variant-numeric: tabular-nums; }
.ficha dd small { display: block; font-family: var(--f-texto); font-weight: 400; font-size: .85rem; color: var(--tinta-2); }

/* Rejilla de horarios */
.horarios { display: grid; gap: 12px; }
.franja { display: grid; gap: 8px; }
.franja-t { font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; font-weight: 700; color: var(--tinta-2); }
.slots { display: grid; grid-template-columns: repeat(auto-fill, minmax(84px, 1fr)); gap: 6px; }
.slot { font-family: var(--f-mono); font-size: .85rem; text-align: center; padding: 7px 4px; border: 1px solid var(--azul); color: var(--azul); border-radius: 6px; font-variant-numeric: tabular-nums; }
.slot.ultimo { background: var(--azul); color: #fff; }
:root[data-theme="dark"] .slot.ultimo { color: #0b1626; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .slot.ultimo { color: #0b1626; } }
.almuerzo { font-size: .9rem; text-align: center; padding: 9px; border-radius: 6px; background: repeating-linear-gradient(135deg, var(--papel-2) 0 8px, var(--papel) 8px 16px); border: 1px dashed var(--linea); color: var(--tinta-2); }

/* Correo */
.correo-campos { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.campo { display: grid; gap: 4px; font-size: .88rem; font-weight: 700; color: var(--tinta-2); }
.campo input { font: inherit; font-weight: 400; font-size: 1rem; color: var(--tinta); background: var(--papel); border: 1px solid var(--linea); border-radius: 8px; padding: 9px 11px; min-width: 0; }
.campo input:focus { border-color: var(--azul); outline: none; box-shadow: 0 0 0 3px rgba(0,91,169,.2); }
.correo { border: 1px solid var(--linea); border-radius: var(--r); overflow: hidden; }
.correo-cab { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 10px 14px; background: var(--papel-2); border-bottom: 1px solid var(--linea); flex-wrap: wrap; }
.correo-cab .asunto { font-size: .92rem; min-width: 0; }
.correo-cuerpo { padding: 18px; white-space: pre-wrap; font-size: 1rem; line-height: 1.65; overflow-wrap: anywhere; }
.correo-cuerpo mark { background: var(--magenta-suave); color: var(--tinta); border-radius: 4px; padding: 0 3px; }
.acciones { display: flex; gap: 8px; flex-wrap: wrap; }
button.copiar { font: inherit; font-size: .9rem; font-weight: 700; cursor: pointer; border: 0; border-radius: 999px; padding: 8px 16px; background: var(--magenta); color: #fff; }
button.copiar.sec { background: transparent; color: var(--azul); border: 1px solid var(--azul); }
button.copiar:hover { filter: brightness(1.08); }

/* Checklist */
ul.check { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
ul.check li { display: grid; grid-template-columns: 22px 1fr; gap: 8px; }
ul.check li::before { content: "✓"; color: var(--ok); font-weight: 700; }

.pie { padding-inline: 16px; border-top: 1px solid var(--linea); background: var(--papel-2); }
.pie-in { max-width: 1120px; margin: 0 auto; padding-block: 22px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: .88rem; color: var(--tinta-2); }