/* ============================================================
   Repositorio Académico — identidad institucional congelada
   Colores multiversidadreal.edu.mx · Titillium Web / Lato / Open Sans
   Temas claro y oscuro por tokens; el usuario elige (data-theme).
   ============================================================ */
:root {
  --ground: #F4F6FA;
  --surface: #FFFFFF;
  --surface-2: #E9EEF6;
  --ink: #1D2433;
  --ink-soft: #5A6478;
  --line: #D7DFEB;
  --navy: #24356B;
  --navy-ink: #FFFFFF;
  --blue: #1A57BF;
  --blue-ink: #FFFFFF;
  --blue-soft: #E3ECFA;
  --gold: #C98A12;
  --gold-soft: #FBEED3;
  --ok: #1E7A46;
  --ok-soft: #DFF2E7;
  --brandtext: #24356B;
  --logo-plate: transparent;
  --display: "Titillium Web", "Segoe UI", Arial, sans-serif;
  --sans: "Lato", -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --btnfont: "Open Sans", "Lato", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground: #0F1420; --surface: #171E2E; --surface-2: #1F2839; --ink: #E6EAF2;
    --ink-soft: #97A1B6; --line: #2A3550; --navy: #2E4184; --navy-ink: #FFFFFF;
    --blue: #6E9FE8; --blue-ink: #0F1420; --blue-soft: #1E2E4D;
    --gold: #E8B24A; --gold-soft: #33270F; --ok: #5BC98A; --ok-soft: #12291C;
    --brandtext: #AFC4F0; --logo-plate: #F4F6FA;
  }
}
:root[data-theme="dark"] {
  --ground: #0F1420; --surface: #171E2E; --surface-2: #1F2839; --ink: #E6EAF2;
  --ink-soft: #97A1B6; --line: #2A3550; --navy: #2E4184; --navy-ink: #FFFFFF;
  --blue: #6E9FE8; --blue-ink: #0F1420; --blue-soft: #1E2E4D;
  --gold: #E8B24A; --gold-soft: #33270F; --ok: #5BC98A; --ok-soft: #12291C;
  --brandtext: #AFC4F0; --logo-plate: #F4F6FA;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15.5px;
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
main { flex: 1; }
a { color: var(--blue); }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

/* --- Navbar --- */
.site-nav {
  background: var(--navy);
  color: var(--navy-ink);
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 12px clamp(16px, 4vw, 40px);
  flex-wrap: wrap;
}
.site-nav .logo-nav { height: 42px; width: auto; display: block; background: #FFFFFF; border-radius: 8px; padding: 3px 8px; }
.site-nav .brand { font-family: var(--display); font-size: 15.5px; font-weight: 700; letter-spacing: .02em; }
.site-nav .brand a { color: inherit; text-decoration: none; }
.site-nav .brand small { display: block; font-family: var(--sans); font-size: 10px; letter-spacing: .18em; text-transform: uppercase; opacity: .78; font-weight: 700; }
.site-nav nav { margin-left: auto; display: flex; gap: 18px; font-size: 13.5px; align-items: center; flex-wrap: wrap; }
.site-nav nav a { color: var(--navy-ink); opacity: .85; text-decoration: none; }
.site-nav nav a:hover { opacity: 1; text-decoration: underline; }

/* --- Selector de tema: fijo en la esquina, misma posición en toda pantalla --- */
.theme-seg {
  position: fixed;
  top: 14px;
  right: max(16px, env(safe-area-inset-right));
  z-index: 60;
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: 0 1px 4px rgba(15, 25, 50, .18);
}
.theme-seg button { font: 700 15px/1 var(--btnfont); border: none; background: transparent; color: var(--ink-soft); padding: 7px 12px; cursor: pointer; }
.theme-seg button.on { background: var(--blue); color: var(--blue-ink); }
/* aire para que los headers no queden debajo del selector */
.site-nav { padding-right: 112px; }
.results-head { padding-right: 112px; }

/* --- Botones e inputs --- */
.btn {
  font: 700 14px var(--btnfont);
  border-radius: 999px;
  padding: 12px 26px;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  display: inline-block;
}
.btn.primary { background: var(--blue); color: var(--blue-ink); }
.btn.quiet { background: var(--surface); color: var(--ink); border-color: var(--line); }
.btn.sm { padding: 7px 16px; font-size: 12.5px; }
.searchrow { display: flex; gap: 10px; max-width: 640px; margin: 0 auto; }
.searchrow input {
  flex: 1;
  font: 15.5px var(--sans);
  color: var(--ink);
  background: var(--surface);
  border: 1.5px solid var(--line);
  border-radius: 999px;
  padding: 13px 22px;
  min-width: 0;
}
.searchrow input::placeholder { color: var(--ink-soft); }
.searchrow input:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px var(--blue-soft); }

/* --- Portada --- */
.home { padding: 56px 20px 72px; text-align: center; }
.home .logo-hero-wrap { display: inline-block; background: var(--logo-plate); border-radius: 14px; padding: 10px 22px; margin-bottom: 6px; }
.home .logo-hero { height: 120px; width: auto; display: block; }
.home .wordmark { font-family: var(--display); font-size: clamp(30px, 5vw, 44px); font-weight: 700; color: var(--brandtext); margin: 0; letter-spacing: .01em; }
.home .tag { color: var(--ink-soft); margin: 10px auto 34px; max-width: 52ch; }
.chips { display: flex; gap: 8px; justify-content: center; margin: 18px 0 0; flex-wrap: wrap; }
.chip {
  font: 700 12.5px var(--btnfont);
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink-soft);
  border-radius: 999px;
  padding: 5px 14px;
  text-decoration: none;
}
.chip.on, .chip:hover { background: var(--blue-soft); border-color: var(--blue); color: var(--blue); }
.home .stats { margin-top: 40px; display: flex; justify-content: center; gap: 36px; flex-wrap: wrap; color: var(--ink-soft); font-size: 13px; }
.home .stats b { display: block; font-family: var(--display); font-weight: 700; font-size: 24px; color: var(--ink); font-variant-numeric: tabular-nums; }
.home .quick { margin-top: 40px; display: flex; gap: 26px; justify-content: center; flex-wrap: wrap; font-size: 13.5px; }
.home .quick a { font-weight: 700; text-decoration: none; }
.home .quick a:hover { text-decoration: underline; }

/* --- Cabecera compacta (buscar/ficha): buscador siempre al centro --- */
.results-head {
  display: grid;
  grid-template-columns: 1fr minmax(auto, 560px) 1fr;
  align-items: center;
  gap: 14px;
  padding: 14px clamp(16px, 4vw, 40px);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}
.results-head .head-left { display: flex; align-items: center; gap: 14px; min-width: 0; }
.results-head .logo-mini { height: 34px; width: auto; background: #FFFFFF; border-radius: 6px; padding: 2px 6px; flex: none; }
.results-head .mini-brand { font-family: var(--display); font-weight: 700; color: var(--brandtext); font-size: 15px; white-space: nowrap; text-decoration: none; }
.results-head .searchrow { width: 100%; margin: 0; justify-self: center; }
.results-head .searchrow input { padding: 9px 18px; font-size: 14px; }
.results-head .btn { padding: 9px 20px; font-size: 13px; }
@media (max-width: 860px) {
  .results-head { grid-template-columns: 1fr; }
  .results-head .searchrow { max-width: none; }
  .results-head > span[aria-hidden] { display: none; }
}

/* --- Resultados --- */
.crumb-wrap { max-width: 1100px; margin: 0 auto; padding: 14px clamp(16px, 4vw, 40px) 0; }
.crumb-wrap .crumb { margin-bottom: 0; }
.results-body { display: grid; grid-template-columns: 230px 1fr; gap: 0; max-width: 1100px; margin: 0 auto; }
@media (max-width: 760px) { .results-body { grid-template-columns: 1fr; } .filters { border-right: none !important; border-bottom: 1px solid var(--line); } }
.filters { border-right: 1px solid var(--line); padding: 22px 18px; font-size: 13.5px; }
.filters h4 { font-family: var(--btnfont); font-size: 11px; text-transform: uppercase; letter-spacing: .1em; color: var(--ink-soft); margin: 18px 0 8px; }
.filters h4:first-child { margin-top: 0; }
.filters label { display: flex; align-items: center; gap: 8px; margin: 6px 0; }
.filters select { width: 100%; font: 13.5px var(--sans); color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: 6px 8px; }
.rlist { padding: 20px clamp(14px, 3vw, 26px) 40px; }
.rmeta { display: flex; justify-content: space-between; align-items: center; gap: 10px; color: var(--ink-soft); font-size: 13px; margin-bottom: 14px; flex-wrap: wrap; }
.rcard { border: 1px solid var(--line); border-radius: 8px; background: var(--surface); padding: 14px 18px; margin-bottom: 12px; }
.rcard .name { font-family: var(--display); font-size: 17px; font-weight: 700; margin: 0 0 3px; }
.rcard .name a { color: var(--blue); text-decoration: none; }
.rcard .name a:hover { text-decoration: underline; }
.rcard .prog { color: var(--ink-soft); font-size: 13.5px; margin: 0 0 10px; }
.rcard .snippet { color: var(--ink-soft); font-size: 13px; line-height: 1.5; margin: -4px 0 10px; }
.rcard .snippet b { color: var(--ink); font-weight: 700; }
.rcard .snippet mark { background: var(--gold-soft); color: var(--gold); padding: 0 3px; border-radius: 3px; font-weight: 700; }
.vacio { text-align: center; color: var(--ink-soft); padding: 60px 20px; }

/* --- Badges --- */
.badges { display: flex; gap: 6px; flex-wrap: wrap; }
.badge { font: 700 11.5px var(--btnfont); border-radius: 5px; padding: 3px 9px; letter-spacing: .02em; text-decoration: none; }
.badge.nivel { background: var(--navy); color: var(--navy-ink); }
.badge.estatus { background: var(--ok-soft); color: var(--ok); }
.badge.doc { background: var(--blue-soft); color: var(--blue); }
a.badge.doc:hover { text-decoration: underline; }
.badge.pending { background: var(--surface-2); color: var(--ink-soft); border: 1px dashed var(--line); }
.badge.year { background: var(--gold-soft); color: var(--gold); }

/* --- Paginación --- */
.pager { display: flex; gap: 6px; justify-content: center; margin-top: 20px; flex-wrap: wrap; }
.pager a, .pager span { min-width: 32px; text-align: center; padding: 5px 8px; border: 1px solid var(--line); border-radius: 6px; font-size: 13px; color: var(--ink-soft); background: var(--surface); text-decoration: none; }
.pager .cur { background: var(--navy); color: var(--navy-ink); border-color: var(--navy); }
.pager a:hover { border-color: var(--blue); color: var(--blue); }

/* --- Ficha --- */
.ficha { padding: 26px clamp(16px, 4vw, 40px) 44px; max-width: 780px; margin: 0 auto; }
.crumb { font-size: 12.5px; color: var(--ink-soft); margin-bottom: 18px; }
.crumb a { text-decoration: none; }
.ficha .name { font-family: var(--display); font-size: clamp(24px, 4vw, 30px); font-weight: 700; margin: 0 0 8px; line-height: 1.15; }
.ficha .sub { color: var(--ink-soft); font-size: 14.5px; margin: 0 0 12px; }
.docrow { display: flex; align-items: center; gap: 16px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); padding: 14px 18px; margin: 10px 0; flex-wrap: wrap; }
.docrow.pending { border-style: dashed; background: transparent; }
.docrow .ico { width: 40px; height: 48px; border: 1.5px solid var(--line); border-radius: 4px; position: relative; background: var(--surface-2); flex: none; }
.docrow .ico::after { content: "PDF"; position: absolute; bottom: 4px; left: 50%; transform: translateX(-50%); font: 700 8.5px var(--btnfont); color: var(--blue); letter-spacing: .05em; }
.docrow.pending .ico::after { content: "···"; color: var(--ink-soft); }
.docrow .txt { flex: 1; min-width: 200px; }
.docrow .txt b { display: block; font-size: 15px; }
.docrow .txt span { color: var(--ink-soft); font-size: 12.5px; }
.docrow .acts { display: flex; gap: 8px; }
.legalnote { margin-top: 22px; font-size: 12.5px; color: var(--ink-soft); border-left: 3px solid var(--gold); background: var(--gold-soft); border-radius: 0 6px 6px 0; padding: 10px 14px; }

/* --- Visor de PDF --- */
.visor { max-width: 1100px; margin: 0 auto; padding: 22px clamp(16px, 4vw, 40px) 40px; }
.visor-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 14px; flex-wrap: wrap; margin-bottom: 14px; }
.visor-head h1 { font-family: var(--display); font-weight: 700; font-size: clamp(20px, 3vw, 26px); margin: 0 0 4px; }
.visor-head .sub { color: var(--ink-soft); font-size: 13.5px; margin: 0; }
.visor-head .acts { display: flex; gap: 8px; }
.visor-frame { width: 100%; height: min(78vh, 900px); border: 1px solid var(--line); border-radius: 8px; background: var(--surface-2); }
.soft-note { color: var(--ink-soft); font-size: 12px; margin-top: 10px; }

/* --- Índice A–Z --- */
.indice { max-width: 900px; margin: 0 auto; padding: 26px clamp(16px, 4vw, 40px) 44px; }
.indice h1 { font-family: var(--display); font-weight: 700; }
.indice .letra { font-family: var(--display); font-weight: 700; color: var(--brandtext); font-size: 20px; border-bottom: 1px solid var(--line); margin: 26px 0 10px; padding-bottom: 4px; }
.indice ul { list-style: none; margin: 0; padding: 0; columns: 2; column-gap: 40px; }
@media (max-width: 640px) { .indice ul { columns: 1; } }
.indice li { margin: 6px 0; break-inside: avoid; }
.indice li small { color: var(--ink-soft); }

/* --- Footer --- */
.site-foot {
  border-top: 1px solid var(--line);
  padding: 14px clamp(16px, 4vw, 40px);
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: var(--ink-soft);
}
.site-foot a { color: var(--ink-soft); }