/* ---------------------------------------------------------
   Apuntes de Ginés López — estilos
   Paleta: fondo casi negro (#121214) heredado de gines.me,
   acento limón por Murcia 🍋
   --------------------------------------------------------- */

:root[data-theme="dark"] {
  --bg: #121214;
  --bg-soft: #17171a;
  --surface: #1a1a1f;
  --surface-hi: #202027;
  --border: #2a2a32;
  --border-hi: #3a3a45;
  --text: #ececf0;
  --text-dim: #9a9aa6;
  --accent: #e8c547;
  --accent-ink: #121214;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4);
}

:root[data-theme="light"] {
  --bg: #fbfbf9;
  --bg-soft: #f4f4f1;
  --surface: #ffffff;
  --surface-hi: #ffffff;
  --border: #e2e2dc;
  --border-hi: #c9c9c1;
  --text: #1b1b1e;
  --text-dim: #63636d;
  --accent: #a37800;
  --accent-ink: #ffffff;
  --shadow: 0 1px 2px rgba(20, 20, 20, .06);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: "Bricolage Grotesque", "Inter", system-ui, sans-serif;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.02em;
  margin: 0;
}

a { color: inherit; }

.wrap {
  width: min(1080px, 100% - 2.5rem);
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-ink);
  padding: .6rem 1rem;
  z-index: 100;
}
.skip:focus { left: 1rem; top: 1rem; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Cabecera ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 4rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  text-decoration: none;
  font-weight: 600;
  margin-right: auto;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 1.9rem; height: 1.9rem;
  border-radius: 7px;
  background: var(--accent);
  color: var(--accent-ink);
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: -.02em;
}

.brand-name { font-size: .95rem; }

.nav {
  display: flex;
  align-items: center;
  gap: 1.35rem;
  font-size: .92rem;
}

.nav a {
  text-decoration: none;
  color: var(--text-dim);
  transition: color .15s ease;
}
.nav a:hover { color: var(--text); }
.nav-out { color: var(--text); }

.theme-toggle {
  display: grid;
  place-items: center;
  width: 2.1rem; height: 2.1rem;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-dim);
  cursor: pointer;
  transition: border-color .15s ease, color .15s ease;
}
.theme-toggle:hover { border-color: var(--border-hi); color: var(--text); }

.theme-icon {
  width: .95rem; height: .95rem;
  border-radius: 50%;
  border: 1.5px solid currentColor;
  background: linear-gradient(90deg, currentColor 0 50%, transparent 50% 100%);
}

/* ---------- Hero ---------- */

.hero {
  padding: clamp(3.5rem, 9vw, 6.5rem) 0 clamp(2.5rem, 6vw, 4rem);
  max-width: 46rem;
  margin-inline: auto;
}

.eyebrow {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: .78rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.1rem;
}

.hero h1 {
  font-size: clamp(2.3rem, 6.5vw, 3.9rem);
  text-wrap: balance;
}

.lead {
  font-size: clamp(1.02rem, 2vw, 1.15rem);
  color: var(--text-dim);
  margin: 1.25rem 0 0;
  max-width: 38rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: .65rem 1.25rem;
  border: 1px solid var(--border-hi);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  font-size: .92rem;
  font-weight: 500;
  text-decoration: none;
  transition: transform .15s ease, border-color .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-1px); border-color: var(--text-dim); }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}
.btn-primary:hover { border-color: var(--accent); }

/* ---------- Secciones ---------- */

.section { padding-block: clamp(2.5rem, 6vw, 4.25rem); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.section-head h2 { font-size: clamp(1.5rem, 3.5vw, 2rem); }

.hash {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  color: var(--accent);
  font-weight: 400;
  margin-right: .15rem;
}

.section-sub {
  margin: 0;
  color: var(--text-dim);
  font-size: .95rem;
}

/* ---------- Filtros ---------- */

.filtros { display: flex; flex-wrap: wrap; gap: .4rem; }

.chip {
  padding: .35rem .9rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--text-dim);
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: .78rem;
  cursor: pointer;
  transition: color .15s ease, border-color .15s ease, background .15s ease;
}
.chip:hover { color: var(--text); border-color: var(--border-hi); }
.chip.is-on {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

/* ---------- Tarjetas de módulo ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.card {
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: var(--shadow);
  transition: border-color .18s ease, transform .18s ease;
}
.card:hover {
  border-color: var(--border-hi);
  transform: translateY(-2px);
}

.card-code {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 1.6rem;
  font-weight: 500;
  letter-spacing: -.04em;
  color: var(--accent);
  margin: 0 0 .6rem;
}

.card-title {
  font-size: 1.08rem;
  font-weight: 600;
  text-wrap: balance;
}

.card-meta {
  margin: .35rem 0 0;
  font-size: .8rem;
  letter-spacing: .02em;
  color: var(--text-dim);
}

.card-desc {
  margin: .85rem 0 1.4rem;
  font-size: .92rem;
  color: var(--text-dim);
}

.card-links {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .35rem 1rem;
}

.link-main {
  font-weight: 600;
  font-size: .93rem;
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 55%, transparent);
  padding-bottom: 1px;
  transition: border-color .15s ease;
}
.link-main:hover { border-bottom-color: var(--accent); }

.link-alt {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: .76rem;
  color: var(--text-dim);
  text-decoration: none;
  padding: .18rem .55rem;
  border: 1px dashed var(--border-hi);
  border-radius: 999px;
}
.link-alt:hover { color: var(--text); border-style: solid; }

.card[hidden] { display: none; }

.vacio {
  margin-top: 1.5rem;
  color: var(--text-dim);
  font-size: .95rem;
}

/* ---------- Recursos ---------- */

.recursos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 1rem;
}

.bloque {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-soft);
}

.bloque h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.lista-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .1rem;
}

.lista-links li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: .5rem 0;
  border-bottom: 1px solid var(--border);
}
.lista-links li:last-child { border-bottom: 0; }

.lista-links a {
  font-size: .92rem;
  font-weight: 500;
  text-decoration: none;
}
.lista-links a:hover { color: var(--accent); }

.lista-links span {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: .7rem;
  color: var(--text-dim);
  white-space: nowrap;
}

/* ---------- FAQ ---------- */

.faq {
  border-top: 1px solid var(--border);
  max-width: 46rem;
}

.faq details { border-bottom: 1px solid var(--border); }

.faq summary {
  list-style: none;
  cursor: pointer;
  padding: 1.1rem 2.5rem 1.1rem 0;
  font-weight: 600;
  font-size: 1rem;
  position: relative;
  transition: color .15s ease;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { color: var(--accent); }

.faq summary::after {
  content: "+";
  position: absolute;
  right: .35rem;
  top: 50%;
  translate: 0 -50%;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 1.15rem;
  color: var(--text-dim);
  transition: rotate .2s ease;
}
.faq details[open] summary::after { rotate: 45deg; }

.faq p {
  margin: 0 0 1.3rem;
  padding-right: 2rem;
  color: var(--text-dim);
  font-size: .95rem;
}
.faq p a { color: var(--text); text-decoration: underline; text-underline-offset: 3px; }

/* Correo antes de que el JS lo convierta en enlace */
.mail {
  font-variant-ligatures: none;
  color: var(--text);
  white-space: nowrap;
}

/* ---------- Pie ---------- */

.site-footer {
  margin-top: clamp(3rem, 8vw, 5rem);
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
  padding-block: 2.5rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1.5rem;
}

.footer-bio p {
  margin: 0;
  max-width: 34rem;
  font-size: .92rem;
  color: var(--text-dim);
}
.footer-bio strong { color: var(--text); }

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
  margin-top: .9rem !important;
}
.footer-links a {
  text-decoration: none;
  color: var(--text);
  border-bottom: 1px solid var(--border-hi);
  padding-bottom: 1px;
  font-size: .9rem;
}
.footer-links a:hover { border-bottom-color: var(--accent); }

.copy {
  margin: 0;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: .74rem;
  color: var(--text-dim);
}

/* ---------- Responsive ---------- */

@media (max-width: 720px) {
  .header-inner { flex-wrap: wrap; min-height: 0; padding-block: .8rem; gap: .75rem; }
  .brand-name { font-size: .9rem; }
  .nav { order: 3; width: 100%; gap: 1rem; overflow-x: auto; padding-bottom: .15rem; }
  .section-head { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}