/* ===================================================================
   Curso de Bash · detomas.net
   Paleta y tipografía tomadas de assets/css/main.css del sitio real.
   =================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Space+Mono:wght@400;700&display=swap');

:root {
  --bg-base:       #080b14;
  --bg-card:       #0e1628;
  --bg-card-hover: #131d35;
  --bg-surface:    #1a2540;
  --border:        rgba(99,102,241,0.15);
  --border-hover:  rgba(99,102,241,0.4);

  --accent:       #6366f1;
  --accent-light: #818cf8;
  --accent-dim:   rgba(99,102,241,0.12);
  --accent-glow:  rgba(99,102,241,0.25);

  --text-primary:   #f0f2ff;
  --text-secondary: #8892b0;
  --text-muted:     #4a5580;

  --ok:    #6ee7b7;
  --warn:  #fcd34d;
  --error: #fca5a5;

  --font-main: 'Space Grotesk', Arial, sans-serif;
  --font-mono: 'Space Mono', Consolas, monospace;

  --radius:    10px;
  --radius-lg: 16px;
  --trans:     0.2s ease;

  --sidebar: 280px;
  --lectura: 760px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg-base);
  background-image: radial-gradient(circle, rgba(99,102,241,0.06) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Barra superior ---------- */

.barra {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 24px;
  background: rgba(8,11,20,0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.marca {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 16px;
  color: var(--text-primary);
  text-decoration: none;
  white-space: nowrap;
}
.marca span { color: var(--accent-light); }

.barra-curso {
  color: var(--text-secondary);
  font-size: 14px;
  border-left: 1px solid var(--border);
  padding-left: 16px;
}

.barra-acciones { margin-left: auto; display: flex; gap: 10px; align-items: center; }

.boton {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: var(--trans);
}
.boton:hover { border-color: var(--border-hover); background: var(--bg-card-hover); }
.boton-principal { background: var(--accent); border-color: var(--accent); color: #fff; }
.boton-principal:hover { background: #4f46e5; border-color: #4f46e5; }

/* ---------- Estructura ---------- */

.envoltorio {
  display: grid;
  grid-template-columns: var(--sidebar) minmax(0, 1fr);
  gap: 48px;
  max-width: 1240px;
  margin: 0 auto;
  padding: 32px 24px 80px;
}

/* ---------- Índice lateral ---------- */

.lateral {
  position: sticky;
  top: 84px;
  align-self: start;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
  padding-right: 8px;
}

.lateral-titulo {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 12px;
}

.lateral ol { list-style: none; margin: 0; padding: 0; counter-reset: cap; }

.lateral li { counter-increment: cap; }

.lateral a {
  display: flex;
  gap: 10px;
  padding: 7px 10px;
  border-radius: 8px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14.5px;
  line-height: 1.4;
  transition: var(--trans);
}
.lateral a::before {
  content: counter(cap);
  flex-shrink: 0;
  width: 20px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  padding-top: 2px;
}
.lateral a:hover { background: var(--bg-card); color: var(--text-primary); }
.lateral a.activo {
  background: var(--accent-dim);
  color: var(--accent-light);
  font-weight: 600;
}
.lateral a.activo::before { color: var(--accent-light); }

/* ---------- Contenido ---------- */

.contenido { max-width: var(--lectura); min-width: 0; }

.migas {
  font-size: 13.5px;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.migas a { color: var(--text-secondary); text-decoration: none; }
.migas a:hover { color: var(--accent-light); }

h1, h2, h3, h4 { font-weight: 700; line-height: 1.25; color: var(--text-primary); }

h1 {
  font-size: 2.2rem;
  margin: 0 0 28px;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.5rem;
  margin: 48px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

h3 { font-size: 1.18rem; margin: 32px 0 12px; color: var(--accent-light); }
h4 { font-size: 1.02rem; margin: 24px 0 10px; color: var(--text-secondary); }

p { margin: 0 0 16px; }

a { color: var(--accent-light); text-decoration: none; border-bottom: 1px solid transparent; }
a:hover { border-bottom-color: var(--accent-light); }

strong { color: var(--text-primary); font-weight: 600; }
em { color: var(--text-secondary); }

ul, ol { margin: 0 0 16px; padding-left: 24px; }
li { margin-bottom: 7px; }
li::marker { color: var(--accent); }

hr { border: none; border-top: 1px solid var(--border); margin: 40px 0; }

/* ---------- Código ---------- */

code {
  font-family: var(--font-mono);
  font-size: 0.86em;
  background: var(--bg-surface);
  padding: 2px 6px;
  border-radius: 5px;
  color: #c7d0f5;
  word-break: break-word;
}

.bloque-codigo { position: relative; margin: 0 0 20px; }

pre {
  margin: 0;
  padding: 18px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.65;
}
pre code {
  background: none;
  padding: 0;
  font-size: inherit;
  color: var(--text-primary);
  white-space: pre;
  word-break: normal;
}

.copiar {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--bg-surface);
  color: var(--text-secondary);
  font-family: var(--font-main);
  font-size: 12px;
  cursor: pointer;
  opacity: 0;
  transition: var(--trans);
}
.bloque-codigo:hover .copiar { opacity: 1; }
.copiar:hover { border-color: var(--border-hover); color: var(--text-primary); }
.copiar.hecho { color: var(--ok); border-color: var(--ok); }
@media (hover: none) { .copiar { opacity: 1; } }

/* -------------------------------------------------------------------
   Resaltado de sintaxis.
   Las clases las genera pandoc (skylighting). Comprobadas sobre el HTML
   ya generado, no supuestas: cf, bu, at y ex son las que más aparecen en
   los ejemplos de bash y son fáciles de olvidar.
   ------------------------------------------------------------------- */
pre .kw,
pre .cf { color: #818cf8; font-weight: 700; }   /* if, then, fi, for, while */
pre .bu,
pre .ex,
pre .fu { color: #7dd3fc; }                      /* echo, cd, ls, grep... */
pre .st,
pre .ss { color: #6ee7b7; }                      /* cadenas */
pre .co { color: var(--text-muted); font-style: italic; }  /* comentarios */
pre .at,
pre .dt { color: #fbbf24; }                      /* opciones: -l, -rf */
pre .dv, pre .bn, pre .fl { color: #fcd34d; }    /* números */
pre .va { color: #f0abfc; }                      /* variables */
pre .op { color: var(--text-secondary); }        /* operadores */
pre .pp { color: var(--text-muted); }            /* shebang */
pre .er { color: var(--error); }

/* ---------- Cajas de aviso ---------- */

blockquote {
  margin: 0 0 20px;
  padding: 16px 20px;
  background: var(--accent-dim);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}
blockquote > :last-child { margin-bottom: 0; }
blockquote p:first-child strong:first-child {
  display: block;
  margin-bottom: 6px;
  color: var(--accent-light);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
blockquote pre { background: rgba(8,11,20,0.6); }

/* ---------- Tablas ---------- */

.tabla-scroll { overflow-x: auto; margin: 0 0 20px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15.5px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
th {
  padding: 11px 14px;
  background: var(--accent-dim);
  color: var(--accent-light);
  text-align: left;
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
td { padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: top; }
tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--bg-card-hover); }

/* ---------- Navegación entre capítulos ---------- */

.nav-caps {
  display: flex;
  gap: 16px;
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.nav-caps a {
  flex: 1;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  transition: var(--trans);
}
.nav-caps a:hover { border-color: var(--border-hover); background: var(--bg-card-hover); }
.nav-caps .siguiente { text-align: right; }
.nav-caps .etiqueta {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 3px;
}
.nav-caps .nombre { color: var(--text-primary); font-weight: 600; font-size: 15px; }

/* ---------- Portada del curso ---------- */

.portada { text-align: center; padding: 40px 0 8px; }
.portada .icono { font-size: 3.4rem; line-height: 1; margin-bottom: 12px; }
.portada h1 { font-size: 2.7rem; margin-bottom: 12px; }
.portada h1 span { color: var(--accent-light); }
.portada .lema { color: var(--text-secondary); font-size: 1.1rem; max-width: 620px; margin: 0 auto 24px; }
.portada .datos {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 28px;
  color: var(--text-muted);
  font-size: 14px;
  font-family: var(--font-mono);
  margin-bottom: 32px;
}

.rejilla-caps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin: 32px 0;
}

.tarjeta-cap {
  display: block;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: var(--trans);
}
.tarjeta-cap:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}
.tarjeta-cap .num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.1em;
}
.tarjeta-cap h3 { margin: 6px 0 8px; font-size: 1.1rem; color: var(--text-primary); }
.tarjeta-cap p { margin: 0; font-size: 14.5px; color: var(--text-secondary); line-height: 1.55; }

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

.pie {
  border-top: 1px solid var(--border);
  padding: 28px 24px 40px;
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
}
.pie a { color: var(--text-secondary); }

/* ---------- Móvil ---------- */

.abrir-indice { display: none; }

@media (max-width: 980px) {
  body { font-size: 16px; }

  .envoltorio {
    grid-template-columns: 1fr;
    gap: 0;
    padding: 20px 18px 60px;
  }

  .lateral {
    position: static;
    max-height: none;
    margin-bottom: 28px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    display: none;
  }
  .lateral.abierto { display: block; }

  .abrir-indice { display: inline-flex; }

  .barra { padding: 10px 16px; gap: 10px; }
  .barra-curso { display: none; }

  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.3rem; margin-top: 36px; }

  .portada h1 { font-size: 2rem; }
  .nav-caps { flex-direction: column; }
  pre { font-size: 13px; padding: 14px; }
  table { font-size: 14px; }
}

@media print {
  .barra, .lateral, .nav-caps, .copiar, .pie { display: none; }
  body { background: #fff; color: #000; }
  .envoltorio { display: block; padding: 0; }
}