:root {
  color-scheme: light;
  /* Tokens compartidos para mantener coherentes los controles del encabezado y el pie. */
  --font-heading: "Space Grotesk", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-soft: #eef2f8;
  --text: #172033;
  --muted: #637087;
  --line: #dfe5ef;
  --header-bg: rgb(245 247 251 / 90%);
  --shadow: 0 18px 50px rgb(21 34 58 / 7%);
  --dwcc: #8b5cf6;
  --dwcc-soft: #f0eaff;
  --sinf: #f97316;
  --sinf-soft: #fff0e5;
  --imso: #10b981;
  --imso-soft: #e4f9f0;
  --radius-lg: 24px;
  --radius-control: 12px;
  --transition-control: border-color .18s ease, background-color .18s ease, transform .18s ease;
  --content-width: 1280px;
}
/* El modo oscuro cambia la paleta sin duplicar las reglas de los componentes. */
html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b1020;
  --surface: #151d32;
  --surface-soft: #1b2740;
  --text: #f3f4f6;
  --muted: #a7b2c7;
  --line: #2a3650;
  --header-bg: rgb(11 16 32 / 90%);
  --shadow: 0 18px 50px rgb(0 0 0 / 20%);
  --dwcc-soft: #2a2045;
  --sinf-soft: #3b261b;
  --imso-soft: #14382e;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body { min-height: 100vh; margin: 0; display: flex; flex-direction: column; background: var(--bg); color: var(--text); font-family: var(--font-body); line-height: 1.55; transition: background-color .2s ease, color .2s ease; }
button, a { font: inherit; }
a { color: inherit; }
button { color: inherit; }
svg { display: block; }
/* Los iconos SVG comparten el trazo; cada componente define su tamano y color. */
.back-button svg, .theme-icon, .decor-icon, .course-icon svg, .course-topics svg, .course-link svg {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}
[hidden] { display: none !important; }
.skip-link { position: fixed; z-index: 1000; top: 8px; left: 8px; padding: 10px 14px; transform: translateY(-150%); border-radius: 10px; background: var(--text); color: var(--bg); }
.skip-link:focus { transform: translateY(0); }
.site-header { position: sticky; top: 0; z-index: 100; border-bottom: 1px solid color-mix(in srgb, var(--imso) 30%, var(--line)); background: linear-gradient(105deg, color-mix(in srgb, var(--surface) 92%, var(--dwcc-soft)), var(--header-bg) 52%, color-mix(in srgb, var(--surface) 92%, var(--imso-soft))); box-shadow: 0 8px 26px rgb(21 34 58 / 9%); backdrop-filter: blur(18px); transition: background-color .2s ease, box-shadow .2s ease; }
.header-inner { width: min(calc(100% - 48px), 1360px); min-height: 60px; margin: 0 auto; display: grid; grid-template-columns: 1fr minmax(250px, 1.3fr) 1fr; align-items: center; gap: 24px; transition: min-height .2s ease; }
.site-header.is-compact .header-inner { min-height: 54px; }
.header-brand-group, .header-actions { display: flex; align-items: center; }
.header-brand-group { gap: 14px; }
.brand-name { display: inline-flex; align-items: center; justify-content: center; padding: 4px 9px; border: 1px solid color-mix(in srgb, var(--imso) 30%, var(--line)); border-radius: var(--radius-control); background: color-mix(in srgb, var(--imso-soft) 62%, var(--surface)); text-decoration: none; transition: var(--transition-control); }
.brand-name:hover { border-color: var(--imso); transform: translateY(-1px); }
.brand-icon { display: block; width: 58px; height: 24px; object-fit: contain; }
.brand-icon--dark { display: none; }
/* Las variantes de los logotipos siguen el tema aplicado al elemento html. */
html[data-theme="dark"] .brand-icon--light, html[data-theme="dark"] .footer-logo--light { display: none; }
html[data-theme="dark"] .brand-icon--dark, html[data-theme="dark"] .footer-logo--dark { display: block; }
.back-button, .theme-toggle { display: inline-flex; align-items: center; justify-content: center; gap: 9px; border: 1px solid var(--line); background: var(--surface); cursor: pointer; transition: var(--transition-control); }
.back-button { width: 38px; height: 38px; border-radius: var(--radius-control); }
.back-button svg { width: 18px; stroke: currentColor; stroke-width: 1.8; }
.header-logo-wrap { display: flex; justify-content: center; align-items: center; min-width: 0; }
.header-horizontal-logo { display: block; width: min(100%, 340px); max-height: 52px; object-fit: contain; }
.header-logo-fallback { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: .84rem; white-space: nowrap; }
.fallback-rule { display: inline-block; width: 1px; height: 32px; background: var(--line); }
.header-actions { justify-content: flex-end; }
.theme-toggle { min-height: 40px; padding: 8px 12px; border-radius: var(--radius-control); font-size: .82rem; font-weight: 600; }
.theme-icon { width: 17px; height: 17px; stroke: currentColor; stroke-width: 1.7; }
html[data-theme="light"] .theme-icon--moon, html[data-theme="dark"] .theme-icon--sun { display: none; }
.back-button:hover, .theme-toggle:hover { border-color: var(--muted); transform: translateY(-1px); }
button:focus-visible, a:focus-visible { outline: 3px solid var(--dwcc); outline-offset: 3px; }
main { flex: 1; }
.courses-section { width: min(calc(100% - 48px), var(--content-width)); margin: 0 auto; padding: 18px 0 16px; }
.section-heading { max-width: 720px; margin: 0 auto 16px; text-align: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 6px; color: var(--muted); font-size: .74rem; font-weight: 700; letter-spacing: .14em; }
.eyebrow-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--imso); box-shadow: 0 0 0 4px var(--imso-soft); }
.eyebrow-separator { color: var(--line); }
h1, h2, p { margin-top: 0; }
h1, h2 { font-family: var(--font-heading); }
h1 { margin-bottom: 6px; font-size: clamp(1.85rem, 3.4vw, 2.55rem); line-height: 1.08; letter-spacing: -.055em; }
h1 span { color: var(--dwcc); }
.section-description { margin: 0; color: var(--muted); font-size: clamp(.9rem, 1.5vw, 1rem); }
.course-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; align-items: stretch; }
.course-card { --accent: var(--dwcc); --accent-soft: var(--dwcc-soft); --card-bg: var(--surface); --card-bg-2: var(--accent-soft); position: relative; display: flex; flex-direction: column; min-width: 0; min-height: 0; padding: 22px; overflow: hidden; isolation: isolate; border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line)); border-radius: var(--radius-lg); background:
    radial-gradient(120% 80% at 100% -10%, color-mix(in srgb, var(--accent) 42%, transparent), transparent 52%),
    radial-gradient(90% 70% at -10% 110%, color-mix(in srgb, var(--accent) 28%, transparent), transparent 48%),
    linear-gradient(165deg, var(--card-bg) 0%, var(--card-bg-2) 100%);
  box-shadow: var(--shadow), inset 0 1px 0 rgb(255 255 255 / 35%); transition: transform .2s ease, border-color .2s ease, background-color .2s ease, box-shadow .2s ease; }
.course-card::after { position: absolute; right: -42px; bottom: -78px; width: 190px; height: 190px; border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent); border-radius: 50%; content: ""; pointer-events: none; }
.course-card::before { position: absolute; right: -7px; bottom: -43px; width: 130px; height: 130px; border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent); border-radius: 50%; content: ""; pointer-events: none; }
.course-card:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--accent) 70%, var(--line)); box-shadow: 0 24px 55px color-mix(in srgb, var(--accent) 22%, rgb(15 23 42 / 8%)); }
.course-card--dwcc { --accent: var(--dwcc); --accent-soft: var(--dwcc-soft); --card-bg: #f3e8ff; --card-bg-2: #d8b4fe; }
.course-card--sinf { --accent: var(--sinf); --accent-soft: var(--sinf-soft); --card-bg: #ffedd5; --card-bg-2: #fdba74; }
.course-card--imso { --accent: var(--imso); --accent-soft: var(--imso-soft); --card-bg: #d1fae5; --card-bg-2: #6ee7b7; }
html[data-theme="dark"] .course-card--dwcc { --card-bg: #3b0764; --card-bg-2: #6b21a8; }
html[data-theme="dark"] .course-card--sinf { --card-bg: #7c2d12; --card-bg-2: #c2410c; }
html[data-theme="dark"] .course-card--imso { --card-bg: #064e3b; --card-bg-2: #047857; }
.card-decor { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.decor-orb { position: absolute; border-radius: 50%; filter: blur(2px); }
.decor-orb--a { top: -36px; right: -28px; width: 150px; height: 150px; background: radial-gradient(circle, color-mix(in srgb, var(--accent) 55%, white) 0%, transparent 72%); opacity: .55; }
.decor-orb--b { bottom: -48px; left: -34px; width: 130px; height: 130px; background: radial-gradient(circle, color-mix(in srgb, var(--accent) 45%, white) 0%, transparent 70%); opacity: .4; }
.decor-icon { position: absolute; width: 28px; height: 28px; stroke: var(--accent); stroke-width: 1.7; opacity: .28; }
.decor-icon--tl { top: 72px; right: 22px; width: 34px; height: 34px; transform: rotate(-8deg); }
.decor-icon--tr { top: 18px; right: 86px; width: 22px; height: 22px; opacity: .22; transform: rotate(12deg); }
.decor-icon--br { right: 28px; bottom: 78px; width: 36px; height: 36px; opacity: .2; transform: rotate(18deg); }
.decor-icon--ml { top: 148px; right: 96px; width: 24px; height: 24px; opacity: .18; transform: rotate(-16deg); }
.course-card:hover .decor-icon { opacity: .42; }
.card-topline { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.course-code { color: color-mix(in srgb, var(--accent) 55%, var(--text)); font-size: .72rem; font-weight: 700; letter-spacing: .12em; }
.course-accent { width: 42px; height: 4px; border-radius: 20px; background: var(--accent); }
.course-icon { position: relative; z-index: 1; display: grid; place-items: center; width: 44px; height: 44px; flex: 0 0 auto; margin: 12px 0 10px; border-radius: 14px; background: color-mix(in srgb, white 55%, var(--accent-soft)); color: var(--accent); box-shadow: 0 8px 18px color-mix(in srgb, var(--accent) 18%, transparent); }
html[data-theme="dark"] .course-icon { background: color-mix(in srgb, black 28%, var(--accent-soft)); }
.course-icon svg { width: 32px; stroke: currentColor; stroke-width: 2; }
.course-copy { position: relative; z-index: 1; }
.course-topics { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 0; padding: 0; list-style: none; }
.course-topics li { display: inline-flex; align-items: center; gap: 6px; padding: 6px 10px; border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent); border-radius: 999px; background: color-mix(in srgb, white 42%, transparent); color: var(--text); font-size: .72rem; font-weight: 700; letter-spacing: .04em; }
html[data-theme="dark"] .course-topics li { background: color-mix(in srgb, black 22%, transparent); }
.course-topics svg { width: 14px; height: 14px; stroke: var(--accent); stroke-width: 1.8; }
.course-overline { margin: 0 0 5px; color: var(--accent); font-size: .7rem; font-weight: 700; letter-spacing: .12em; }
.course-copy h2 { margin: 0; font-size: 1.72rem; line-height: 1.1; letter-spacing: -.04em; }
.course-full-name { margin: 8px 0 8px; font-weight: 600; }
.course-description { max-width: none; margin: 0; color: var(--muted); font-size: .88rem; }
.course-link { position: relative; z-index: 1; display: inline-flex; align-items: center; justify-content: space-between; gap: 12px; width: fit-content; min-width: 0; margin-top: auto; padding: 12px 8px 0 0; color: var(--text); font-size: .84rem; font-weight: 700; text-decoration: none; }
.course-link svg { width: 20px; stroke: var(--accent); stroke-width: 1.8; transition: transform .18s ease; }
.course-link:hover svg { transform: translateX(4px); }
.course-link:focus-visible { outline-color: var(--accent); }
.course-link--disabled { color: var(--muted); cursor: not-allowed; }
.course-link--disabled svg { stroke: var(--accent); }
.card-status { position: relative; z-index: 1; margin: 8px 0 0; color: var(--muted); font-size: .75rem; }
.local-note { display: flex; justify-content: center; align-items: center; gap: 8px; margin: 12px 0 0; color: var(--muted); text-align: center; font-size: .77rem; }
.local-note-mark { color: var(--dwcc); font-size: 1rem; }
.site-footer { display: grid; grid-template-columns: 1fr minmax(280px, 2fr) 1fr; align-items: center; gap: 16px; padding: 18px max(24px, calc((100vw - var(--content-width)) / 2)); border-top: 1px solid color-mix(in srgb, var(--dwcc) 28%, var(--line)); background: linear-gradient(105deg, color-mix(in srgb, var(--surface) 94%, var(--dwcc-soft)), var(--surface) 48%, color-mix(in srgb, var(--surface) 94%, var(--imso-soft))); box-shadow: inset 0 1px 0 rgb(255 255 255 / 35%); }
.footer-home, .footer-top { width: fit-content; padding: 7px 11px; border: 1px solid color-mix(in srgb, var(--dwcc) 24%, var(--line)); border-radius: 11px; background: color-mix(in srgb, var(--surface) 78%, var(--dwcc-soft)); color: var(--muted); font-size: .8rem; text-decoration: none; transition: border-color .18s ease, background-color .18s ease, color .18s ease, transform .18s ease; }
.footer-home { display: inline-flex; align-items: center; gap: 9px; }
.footer-logo { display: block; width: 40px; height: 40px; border-radius: 9px; object-fit: cover; }
.footer-home:hover, .footer-top:hover { border-color: color-mix(in srgb, var(--imso) 60%, var(--line)); background: color-mix(in srgb, var(--imso-soft) 55%, var(--surface)); color: var(--text); transform: translateY(-1px); }
.footer-author { text-align: center; }
.footer-author strong { display: inline-block; padding-bottom: 3px; border-bottom: 2px solid color-mix(in srgb, var(--imso) 60%, transparent); font-family: var(--font-heading); font-size: .9rem; }
.footer-author p { max-width: 600px; margin: 5px auto 0; color: var(--muted); font-size: .72rem; }
.footer-top { justify-self: end; }
.footer-logo--dark { display: none; }
@media (max-width: 980px) {
  .courses-section { width: min(calc(100% - 32px), var(--content-width)); }
  .course-grid { gap: 14px; }
  .course-card { padding: 18px; }
  .course-copy h2 { font-size: 1.5rem; }
  .course-topics li { padding: 5px 8px; font-size: .68rem; }
}
@media (max-width: 760px) {
  .header-inner { width: min(calc(100% - 28px), 600px); min-height: 72px; grid-template-columns: 1fr auto; gap: 12px; }
  .site-header.is-compact .header-inner { min-height: 60px; }
  .header-brand-group { gap: 9px; }
  .brand-name { font-size: 1.25rem; }
  .header-logo-wrap { grid-column: 1 / -1; grid-row: 2; justify-content: flex-start; padding: 0 0 10px 2px; }
  .header-horizontal-logo { width: min(100%, 320px); max-height: 48px; object-position: left center; }
  .header-logo-fallback { font-size: .72rem; }
  .header-actions { grid-column: 2; grid-row: 1; }
  .theme-toggle { width: 40px; min-width: 40px; height: 40px; padding: 0; }
  .theme-label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
  .courses-section { width: min(calc(100% - 28px), 560px); padding-top: 16px; }
  .section-heading { margin-bottom: 16px; }
  .course-grid { grid-template-columns: 1fr; gap: 16px; }
  .course-card { grid-column: 1; width: 100%; min-height: 0; padding: 22px; }
  .site-footer { grid-template-columns: 1fr; justify-items: center; gap: 12px; padding: 24px 20px; }
  .footer-home, .footer-top { justify-self: center; }
  .footer-author { grid-row: 1; }
}
@media (max-width: 380px) {
  .back-button { width: 34px; height: 34px; }
  .brand-name { font-size: 1.12rem; }
  .course-card { padding: 19px; }
  .eyebrow { font-size: .65rem; letter-spacing: .1em; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}