:root {
  --bg: #f5f6f8; --card: #fff; --text: #1b2430; --muted: #66707d;
  --line: #e2e6ea; --accent: #1f5fa8; --accent-soft: #e4eefa;
  --a: #1f5fa8; --b: #c2570c; --warn: #fff4d6; --warn-line: #e6c56a;
  --shadow: 0 1px 2px rgba(16,24,40,.05), 0 1px 3px rgba(16,24,40,.06);
  --shadow-h: 0 4px 14px rgba(16,24,40,.10);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12161b; --card: #1a2028; --text: #e6e9ed; --muted: #99a3b0;
    --line: #2b333d; --accent: #6aa7ec; --accent-soft: #1d2b3d;
    --a: #6aa7ec; --b: #f0925a; --warn: #33290f; --warn-line: #6b5820;
    --shadow: 0 1px 2px rgba(0,0,0,.4); --shadow-h: 0 4px 14px rgba(0,0,0,.5);
  }
}
:root[data-theme="dark"] {
  --bg: #12161b; --card: #1a2028; --text: #e6e9ed; --muted: #99a3b0;
  --line: #2b333d; --accent: #6aa7ec; --accent-soft: #1d2b3d;
  --a: #6aa7ec; --b: #f0925a; --warn: #33290f; --warn-line: #6b5820;
  --shadow: 0 1px 2px rgba(0,0,0,.4); --shadow-h: 0 4px 14px rgba(0,0,0,.5);
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--accent); }
main { max-width: 960px; margin: 0 auto; padding: 24px 16px 48px; }
h1 { font-size: 1.6rem; margin: 0; }
h2 { font-size: 1.05rem; margin: 0 0 12px; }
.sub { color: var(--muted); margin: 4px 0 24px; }
.muted { color: var(--muted); }

nav.top { background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
nav.top .in { max-width: 960px; margin: 0 auto; padding: 8px 16px; display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
nav.top a { text-decoration: none; color: var(--muted); padding: 6px 12px; border-radius: 99px; font-size: .92rem; white-space: nowrap; }
nav.top a:hover { color: var(--text); background: var(--bg); }
nav.top a.on { color: var(--accent); background: var(--accent-soft); font-weight: 600; }
nav.top .sp { flex: 1; }
nav.top a.sga { color: var(--accent); border: 1px solid var(--line); }
#copiar, #sesion { background: none; color: var(--muted); border: 1px solid var(--line); border-radius: 99px; padding: 5px 10px; font: inherit; font-size: .8rem; cursor: pointer; white-space: nowrap; }
#copiar:hover, #sesion:hover { color: var(--text); border-color: var(--accent); }

.ok { color: #1a7f4b; font-weight: 600; }
.bad { color: #c62828; font-weight: 600; }
:root[data-theme="dark"] .ok { color: #5fd18f; }
:root[data-theme="dark"] .bad { color: #ff7b7b; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .ok { color: #5fd18f; }
  :root:not([data-theme="light"]) .bad { color: #ff7b7b; }
}

.tl { list-style: none; margin: 0; padding: 0; }
.tl li { display: flex; gap: 12px; align-items: flex-start; padding: 10px 0; border-bottom: 1px solid var(--line); }
.tl li:last-child { border-bottom: 0; }
.tl .fecha { min-width: 130px; color: var(--muted); font-size: .88rem; }
.tl .que { flex: 1; }
.tl .que small { display: block; color: var(--muted); }
.tl .est { font-size: .78rem; border-radius: 99px; padding: 2px 10px; white-space: nowrap; border: 1px solid var(--line); color: var(--muted); }
.tl li.curso .est { background: var(--warn); border-color: var(--warn-line); color: var(--text); font-weight: 600; }
.tl li.prox .est { background: var(--accent-soft); border-color: transparent; color: var(--accent); }
.tl li.pasado { opacity: .55; }
@media (max-width: 560px) { .tl li { flex-wrap: wrap; } .tl .fecha { min-width: 100%; } .tl .que { flex-basis: 100%; } }
#tema { background: var(--card); color: var(--text); border: 1px solid var(--line); border-radius: 99px;
  padding: 6px 14px; font: inherit; font-size: .88rem; cursor: pointer; white-space: nowrap; }
#tema:hover { border-color: var(--accent); }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin-bottom: 16px; }
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 16px; }
.kpi { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.kpi b { display: block; font-size: 1.7rem; line-height: 1.2; }
.kpi span { color: var(--muted); font-size: .85rem; }
.bar { height: 10px; background: var(--line); border-radius: 99px; overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--accent); }
.row { display: flex; justify-content: space-between; gap: 12px; color: var(--muted); font-size: .88rem; margin-top: 8px; flex-wrap: wrap; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; }
.scroll { overflow-x: auto; }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 6px; }
.grid th, .grid td { text-align: center; border: 1px solid var(--line); padding: 6px 4px; font-size: .8rem; }
.grid td.hora { color: var(--muted); white-space: nowrap; background: var(--bg); }
.grid th.hoy { color: var(--accent); background: var(--accent-soft); }
.cls { border-radius: 6px; padding: 4px; font-weight: 600; color: #fff; }
.cls small { display: block; font-weight: 400; opacity: .9; }
.note { background: var(--warn); border: 1px solid var(--warn-line); border-radius: 10px; padding: 10px 12px; font-size: .88rem; margin-top: 12px; }
.empty { color: var(--muted); font-size: .92rem; padding: 4px 0; }
.mats { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px; margin-bottom: 16px; }
.mat { display: block; text-decoration: none; color: inherit; background: var(--card); border: 1px solid var(--line);
  border-left: 4px solid var(--accent); border-radius: 12px; padding: 14px 16px; }
.mat:hover { border-color: var(--accent); }
.mat b { display: block; font-size: 1.05rem; }
.mat span { color: var(--muted); font-size: .85rem; display: block; }
.crumb { font-size: .85rem; color: var(--muted); margin-bottom: 8px; }
footer { color: var(--muted); font-size: .8rem; margin-top: 24px; }

#json { width: 100%; font: .82rem/1.4 ui-monospace, monospace; background: var(--bg); color: var(--text);
  border: 1px solid var(--line); border-radius: 8px; padding: 10px; }
details summary { cursor: pointer; color: var(--accent); margin: 12px 0 8px; }
.btn { background: var(--accent); color: #fff; border: 0; border-radius: 99px; padding: 6px 16px; font: inherit; cursor: pointer; }

.frm { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.frm input { font: inherit; background: var(--bg); color: var(--text); border: 1px solid var(--line); border-radius: 8px; padding: 6px 8px; min-width: 0; }
.frm input[name="nombre"], .frm input[name="titulo"], .frm input[name="url"], .frm input[name="correo"] { flex: 1 1 180px; }
.mini { width: 5.5rem; font: inherit; background: var(--bg); color: var(--text); border: 1px solid var(--line); border-radius: 8px; padding: 4px 6px; }
.cp, .wa { font-size: .85rem; margin-left: 6px; white-space: nowrap; }
.cp { text-decoration: underline; }
.x { background: none; border: 0; color: var(--muted); cursor: pointer; font: inherit; }
.x:hover { color: #c62828; }

nav.top .links, nav.top .acts { display: flex; gap: 6px; align-items: center; }
nav.top .acts { margin-left: auto; }
@media (max-width: 640px) {
  main { padding: 16px 12px 40px; }
  nav.top { position: static; }
  nav.top .in { flex-direction: column; align-items: stretch; gap: 6px; padding: 8px 12px; }
  nav.top .links, nav.top .acts { overflow-x: auto; flex-wrap: nowrap; scrollbar-width: none; }
  nav.top .acts { margin-left: 0; justify-content: space-between; }
  nav.top a, #copiar, #sesion, #tema { flex: 0 0 auto; }
  #copiar, #sesion, #tema, nav.top a.sga { padding: 5px 10px; font-size: .8rem; }
  .card { padding: 14px; }
  h1 { font-size: 1.35rem; }
}

@media (max-width: 640px) {
  nav.top .acts { gap: 4px; }
  #copiar, #sesion, #tema, nav.top a.sga { padding: 5px 8px; }
  .cls { font-size: .72rem; padding: 3px; }
  .grid td.hora { font-size: .72rem; white-space: normal; }
}

/* ---- Pulido de UI/UX ---- */
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { -webkit-font-smoothing: antialiased; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
button, .btn, a.mat, .card { transition: border-color .15s, box-shadow .15s, background-color .15s, transform .15s; }
button { -webkit-tap-highlight-color: transparent; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }

h1 { font-size: 1.75rem; letter-spacing: -.01em; }
h2 { font-size: 1.05rem; letter-spacing: -.005em; }
main > h2 { margin: 24px 0 12px; }
.card, .kpi, .mat { box-shadow: var(--shadow); }
.card { border-radius: 14px; padding: 18px; }
.card > h2 { padding-bottom: 10px; margin-bottom: 14px; border-bottom: 1px solid var(--line); }
.kpi { border-radius: 14px; }
.kpi b { letter-spacing: -.02em; }
.kpi .peq { font-size: 1.05rem; text-transform: capitalize; }

nav.top { background: color-mix(in srgb, var(--card) 88%, transparent); backdrop-filter: saturate(1.4) blur(8px); box-shadow: var(--shadow); }
nav.top a[aria-current="page"] { color: var(--accent); background: var(--accent-soft); font-weight: 600; }
#copiar:hover, #sesion:hover, #tema:hover { background: var(--bg); }
#sesion { color: var(--accent); border-color: var(--accent); }

.proxima { display: flex; flex-direction: column; gap: 2px; border-left: 4px solid var(--accent); }
.proxima b { font-size: 1.25rem; letter-spacing: -.01em; }
.proxima .etq { color: var(--accent); font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; }
.proxima span:not(.etq) { text-transform: capitalize; }
.proxima .muted { text-transform: none !important; font-size: .9rem; }

.mat { border-left-color: var(--c, var(--accent)); border-radius: 14px; }
.mat:hover { box-shadow: var(--shadow-h); transform: translateY(-1px); border-color: var(--c, var(--accent)); }
.mat span { margin-top: 2px; }
.mat .prox { color: var(--text); font-size: .85rem; margin-top: 6px; }
.mat .prox::before { content: "• "; color: var(--c, var(--accent)); }

.tl li { padding: 12px 4px; }
tbody tr:hover td { background: color-mix(in srgb, var(--accent-soft) 45%, transparent); }
.grid tbody tr:hover td { background: none; }
.grid td { vertical-align: middle; }

.pill { display: inline-block; font-size: .72rem; font-weight: 600; border-radius: 99px; padding: 1px 8px; margin-left: 6px; white-space: nowrap; }
.pill.aviso { background: var(--warn); border: 1px solid var(--warn-line); }
.pill.mal { background: #fde8e8; color: #b42318; border: 1px solid #f5b5b0; }
:root[data-theme="dark"] .pill.mal { background: #3a1717; color: #ff9a92; border-color: #6b2a2a; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .pill.mal { background: #3a1717; color: #ff9a92; border-color: #6b2a2a; } }

.empty { background: var(--bg); border: 1px dashed var(--line); border-radius: 10px; padding: 12px; text-align: center; }
.card ol, .card ul { padding-left: 1.3rem; margin: 0; }
.card li { margin: 4px 0; }
.card ol li::marker { color: var(--accent); font-weight: 600; }
.tl { padding: 0; }

.btn { font-weight: 600; padding: 7px 18px; }
.btn:hover { filter: brightness(1.08); box-shadow: var(--shadow-h); }
.btn:active { transform: translateY(1px); }
.frm input:focus, .mini:focus, #json:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px var(--accent-soft); }
.x { padding: 2px 6px; border-radius: 6px; }
.x:hover { background: var(--bg); }

.cp { background: var(--bg); border: 1px solid var(--line); border-radius: 99px; padding: 1px 10px; text-decoration: none; color: var(--text); }
.cp:hover { border-color: var(--accent); color: var(--accent); }
a.wa { display: inline-block; background: #1a7f4b; color: #fff; border-radius: 99px; padding: 1px 10px; text-decoration: none; font-weight: 600; }
a.wa:hover { filter: brightness(1.12); }

@media (max-width: 640px) {
  nav.top { position: sticky; top: 0; }
  .card { padding: 14px; }
  .kpis { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .kpi { padding: 12px; }
  .kpi b { font-size: 1.45rem; }
  .card > h2 { margin-bottom: 10px; }
  /* Tablas de datos: la primera columna se mantiene visible al deslizar. */
  .scroll table:not(.grid) th:first-child, .scroll table:not(.grid) td:first-child { position: sticky; left: 0; background: var(--card); }
  .frm > * { flex: 1 1 100%; }
  .frm .btn { flex: 0 0 auto; }
  .tl .fecha { min-width: 100%; font-weight: 600; }
}
@media print {
  nav.top, .frm, .x, #sesion, #copiar, #tema { display: none !important; }
  body { background: #fff; }
  .card, .kpi, .mat { box-shadow: none; break-inside: avoid; }
}