/* =====================================================================
   Tutoriales Lucio · CODLYX — hoja de estilo de las páginas de tutorial
   ---------------------------------------------------------------------
   Se carga SOLO en /tutoriales/{slug}, no en la portada.
   Contiene el armazón de lectura (sumario, progreso, prosa) y los
   componentes didácticos migrados del laboratorio de Wireshark:
   tarjetas de ejercicio, bloques de terminal, chips de filtro, callouts,
   diagrama de encapsulado y tablas de referencia.
   ===================================================================== */

/* ------------------- Cabecera del tutorial ------------------------ */
.tut-head {
  position: relative;
  padding: 46px 0 34px;
  border-bottom: 1px solid var(--dv-border-subtle);
  background: var(--dv-bg-secondary);
}

.tut-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12px;
  color: var(--dv-text-muted);
}
.tut-breadcrumb li { display: inline-flex; align-items: center; gap: 8px; }
.tut-breadcrumb li + li::before { content: "/"; color: var(--dv-border-strong); }
.tut-breadcrumb a { color: var(--dv-text-muted); }
.tut-breadcrumb a:hover { color: var(--dv-accent); }
.tut-breadcrumb [aria-current="page"] { color: var(--dv-text-primary); }

.tut-head__title { margin: 0 0 10px; }
.tut-head__tagline {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--dv-accent);
  margin: 0 0 16px;
}
.tut-head__desc { max-width: var(--tl-measure); color: var(--dv-text-secondary); margin: 0 0 22px; }

/* Ficha de la máquina sobre la que están escritos los ejercicios.
   Es dato técnico del laboratorio, no adorno: cada ejercicio usa
   estos valores literalmente. */
.tut-machine {
  display: flex;
  flex-wrap: wrap;
  /* fit-content: en una sola línea la ficha mide lo que mide su contenido,
     sin franja vacía a la derecha en pantallas anchas. Al envolverse, los
     elementos crecen para llenar la fila y no queda un hueco dentado. */
  width: fit-content;
  max-width: 100%;
  margin: 0;
  border: 1px solid var(--dv-border-subtle);
  border-radius: var(--dv-radius-sm);
  background: var(--dv-bg-elevated);
  overflow: hidden;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12.5px;
}
.tut-machine div {
  display: flex;
  flex: 1 1 auto;
  align-items: baseline;
  gap: 9px;
  padding: 10px 16px;
  border-right: 1px solid var(--dv-border-subtle);
}
.tut-machine div:last-child { border-right: 0; }
.tut-machine dt, .tut-machine b {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dv-text-muted);
  margin: 0;
}
.tut-machine dd, .tut-machine span {
  margin: 0;
  color: var(--dv-text-primary);
  font-variant-numeric: tabular-nums;
}

/* --------------- Barra de progreso de lectura --------------------- */
/* Solo refleja el scroll de la página actual. No guarda ni envía nada. */
.tut-progress {
  position: fixed;
  top: var(--tl-nav-h);
  left: 0; right: 0;
  height: 2px;
  background: transparent;
  z-index: 999;
  pointer-events: none;
}
.tut-progress__bar {
  height: 100%;
  width: 0;
  background: var(--dv-gradient-brand);
  transition: width 90ms linear;
}

/* --------------------- Armazón de dos columnas -------------------- */
.tut-layout { display: grid; grid-template-columns: 1fr; gap: 40px; padding: 40px 0 80px; }

@media (min-width: 992px) {
  .tut-layout { grid-template-columns: 244px minmax(0, 1fr); gap: 52px; }
}
@media (min-width: 1400px) {
  .tut-layout { grid-template-columns: 260px minmax(0, var(--tl-measure)) 1fr; }
  .tut-layout > .tut-body { grid-column: 2; }
}

/* --------------------------- Sumario ------------------------------ */
.tut-toc { min-width: 0; }

@media (min-width: 992px) {
  .tut-toc {
    position: sticky;
    top: calc(var(--tl-nav-h) + 26px);
    max-height: calc(100vh - var(--tl-nav-h) - 52px);
    overflow-y: auto;
    overscroll-behavior: contain;
  }
}

.tut-toc__title {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dv-text-muted);
  margin: 0 0 12px;
}
.tut-toc__list { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--dv-border-subtle); }
.tut-toc__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 12px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  font-size: 13.5px;
  color: var(--dv-text-muted);
  transition: color 140ms var(--tl-ease), border-color 140ms var(--tl-ease), background-color 140ms var(--tl-ease);
}
.tut-toc__link:hover { color: var(--dv-text-primary); background: var(--dv-bg-elevated); }
.tut-toc__link.is-active {
  color: var(--dv-accent);
  border-left-color: var(--dv-accent);
  background: var(--dv-accent-soft);
  font-weight: 500;
}
.tut-toc__num {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 10.5px;
  color: var(--dv-border-strong);
  min-width: 1.5em;
  font-variant-numeric: tabular-nums;
}
.tut-toc__link.is-active .tut-toc__num { color: var(--dv-accent); }

/* Sumario plegable en móvil: <details> nativo, sin JavaScript. */
.tut-toc__mobile {
  border: 1px solid var(--dv-border-subtle);
  border-radius: var(--dv-radius-md);
  background: var(--dv-bg-elevated);
  overflow: hidden;
}
.tut-toc__mobile > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  cursor: pointer;
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-weight: 600;
  color: var(--dv-text-primary);
  list-style: none;
}
.tut-toc__mobile > summary::-webkit-details-marker { display: none; }
.tut-toc__mobile > summary::after {
  content: "";
  width: 8px; height: 8px;
  border-right: 2px solid var(--dv-text-muted);
  border-bottom: 2px solid var(--dv-text-muted);
  transform: rotate(45deg) translateY(-2px);
  transition: transform 160ms var(--tl-ease);
}
.tut-toc__mobile[open] > summary::after { transform: rotate(-135deg) translateY(-2px); }
.tut-toc__mobile .tut-toc__list { border-left: 0; padding: 0 10px 12px; }

@media (min-width: 992px) { .tut-toc__mobile { display: none; } }
@media (max-width: 991.98px) { .tut-toc__desktop { display: none; } }

/* ------------------------ Cuerpo / prosa -------------------------- */
.tut-body { min-width: 0; }

/* El desplazamiento del ancla lo aporta html{scroll-padding-top} en app.css. */

.tut-body h2 {
  margin: 56px 0 6px;
  padding-top: 22px;
  border-top: 1px solid var(--dv-border-subtle);
}
.tut-body > section:first-child > h2 { margin-top: 0; padding-top: 0; border-top: 0; }

.tut-sub {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 13px;
  color: var(--dv-text-muted);
  margin: 0 0 24px;
}

.tut-body h3 { margin: 34px 0 12px; }
.tut-body h4 {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dv-text-muted);
  margin: 28px 0 10px;
}

.tut-body ul, .tut-body ol { margin: 0 0 20px; padding-left: 1.35em; }
.tut-body li { margin: 0 0 9px; }
.tut-body li::marker { color: var(--dv-accent); }

.tut-body :not(pre) > code {
  font-size: 0.875em;
  padding: 0.14em 0.4em;
  border-radius: 3px;
  background: var(--dv-bg-surface);
  border: 1px solid var(--dv-border-subtle);
  color: var(--dv-text-primary);
  word-break: break-word;
}

kbd {
  font-size: 0.82em;
  padding: 0.16em 0.46em;
  border-radius: 4px;
  background: var(--dv-bg-surface);
  border: 1px solid var(--dv-border-strong);
  border-bottom-width: 2px;
  color: var(--dv-text-primary);
  white-space: nowrap;
}

/* ---------------- Tarjeta de ejercicio (laboratorio) -------------- */
.lab {
  position: relative;
  margin: 28px 0 36px;
  padding: 26px 28px 10px;
  background: var(--dv-surface-card);
  border: 1px solid var(--dv-border-subtle);
  border-radius: var(--dv-radius-md);
  box-shadow: var(--dv-shadow-md);
}
.lab__head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 6px; }
.lab__num {
  flex: none;
  position: relative;
  top: -2px;
  padding: 4px 9px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--dv-text-inverse);
  background: var(--dv-gradient-brand);
  border-radius: 3px;
}
.lab__head h3 { margin: 0; font-size: 21px; }
.lab__goal {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12px;
  color: var(--dv-text-muted);
  margin: 0 0 20px;
}

/* --------------------- Bloque de terminal ------------------------- */
.term {
  position: relative;
  margin: 0 0 20px;
  border: 1px solid var(--dv-border-subtle);
  border-radius: var(--dv-radius-sm);
  background: var(--tl-term-bg);
  overflow: hidden;
}
.term__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 10px 7px 14px;
  border-bottom: 1px solid var(--dv-border-subtle);
  background: rgba(255, 255, 255, 0.02);
}
.term__label {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dv-text-muted);
}
.term__copy {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11px;
  color: var(--dv-text-muted);
  background: transparent;
  border: 1px solid var(--dv-border-subtle);
  border-radius: 3px;
  cursor: pointer;
  transition: color 140ms var(--tl-ease), border-color 140ms var(--tl-ease);
}
.term__copy:hover { color: var(--dv-accent); border-color: var(--dv-accent-border); }
.term__copy.is-done { color: var(--dv-accent); border-color: var(--dv-accent-border); }

.term pre {
  margin: 0;
  padding: 14px 16px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.7;
  color: var(--tl-term-ink);
  tab-size: 4;
}
.term .p { color: var(--dv-accent); user-select: none; }   /* prompt $ */
.term .c { color: var(--tl-term-comment); }                /* comentario */

/* ------------------- Chip de display filter ----------------------- */
/* Los filtros son el elemento que más se copia del laboratorio, así que
   tienen su propio componente con botón de copia directo. */
.filter {
  display: flex;
  align-items: stretch;
  margin: 0 0 20px;
  border: 1px solid var(--tl-l4);
  border-radius: var(--dv-radius-sm);
  background: var(--tl-l4-soft);
  overflow: hidden;
}
.filter__tag {
  display: flex;
  align-items: center;
  flex: none;
  padding: 9px 11px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dv-text-inverse);
  background: var(--tl-l4);
}
.filter__val {
  flex: 1;
  min-width: 0;
  padding: 9px 12px;
  overflow-x: auto;
  white-space: pre;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 13.5px;
  color: var(--dv-text-primary);
}
.filter__copy {
  flex: none;
  padding: 0 12px;
  background: transparent;
  border: 0;
  border-left: 1px solid var(--tl-l4);
  color: var(--tl-l4);
  cursor: pointer;
  transition: background-color 140ms var(--tl-ease);
}
.filter__copy:hover { background: var(--tl-l4-soft); }

/* ---------------------- Callout / aviso --------------------------- */
.note {
  margin: 0 0 22px;
  padding: 16px 20px;
  border: 1px solid var(--tl-warn-border);
  border-left: 3px solid var(--tl-warn);
  border-radius: 0 var(--dv-radius-sm) var(--dv-radius-sm) 0;
  background: var(--tl-warn-soft);
  font-size: 15px;
}
.note p { margin: 0; }
.note p + p { margin-top: 11px; }
.note__label {
  display: block;
  margin-bottom: 6px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--tl-warn);
}
/* Variante informativa, mismo componente distinto color semántico. */
.note--info {
  border-color: var(--dv-accent-border);
  border-left-color: var(--dv-accent);
  background: var(--dv-accent-soft);
}
.note--info .note__label { color: var(--dv-accent); }

/* ------------------ Diagrama de encapsulado ----------------------- */
.encap { margin: 26px 0 28px; overflow-x: auto; padding-bottom: 4px; }
.encap__row {
  display: flex;
  min-width: 620px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11.5px;
}
.encap__row > div {
  padding: 12px 10px;
  border: 1px solid;
  border-right-width: 0;
  text-align: center;
}
.encap__row > div:last-child { border-right-width: 1px; }
.encap__k { display: block; font-size: 12.5px; font-weight: 700; margin-bottom: 3px; }
.encap__b { display: block; font-size: 10px; opacity: 0.75; }

.encap .l2 { flex: 0 0 15%; color: var(--tl-l2); border-color: var(--tl-l2); background: var(--tl-l2-soft); }
.encap .l3 { flex: 0 0 18%; color: var(--tl-l3); border-color: var(--tl-l3); background: var(--tl-l3-soft); }
.encap .l4 { flex: 0 0 18%; color: var(--tl-l4); border-color: var(--tl-l4); background: var(--tl-l4-soft); }
.encap .l7 { flex: 1;       color: var(--tl-l7); border-color: var(--tl-l7); background: var(--tl-l7-soft); }

.encap__legend {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 24px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11.5px;
  color: var(--dv-text-muted);
}
.encap__legend li { display: flex; align-items: center; gap: 8px; }
.encap__legend i {
  width: 9px; height: 9px;
  border-radius: 2px;
  flex: none;
}
.encap__legend .l2 { background: var(--tl-l2); }
.encap__legend .l3 { background: var(--tl-l3); }
.encap__legend .l4 { background: var(--tl-l4); }
.encap__legend .l7 { background: var(--tl-l7); }

/* --------------------- Los tres paneles --------------------------- */
.panes {
  display: grid;
  gap: 1px;
  margin: 24px 0 28px;
  background: var(--dv-border-subtle);
  border: 1px solid var(--dv-border-subtle);
  border-radius: var(--dv-radius-md);
  overflow: hidden;
}
@media (min-width: 780px) { .panes { grid-template-columns: repeat(3, 1fr); } }
.panes > div { background: var(--dv-bg-elevated); padding: 18px 20px; }
.panes dt, .panes__name {
  margin: 0 0 8px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dv-accent);
}
.panes dd, .panes__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--dv-text-secondary);
}
.panes b { color: var(--dv-text-primary); }

/* --------------------------- Figuras ------------------------------ */
.tut-figure { margin: 26px 0 28px; }
.tut-figure svg { display: block; width: 100%; height: auto; max-width: 540px; margin: 0 auto; }
.tut-figure figcaption {
  margin-top: 12px;
  text-align: center;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11.5px;
  color: var(--dv-text-muted);
}

/* --------------------------- Tablas ------------------------------- */
/* El contenedor scrollea, no la página: así una tabla ancha nunca
   provoca scroll horizontal global en móvil. */
.tut-table {
  margin: 0 0 24px;
  overflow-x: auto;
  border: 1px solid var(--dv-border-subtle);
  border-radius: var(--dv-radius-md);
  background: var(--dv-bg-elevated);
}
.tut-table table { width: 100%; min-width: 440px; border-collapse: collapse; font-size: 14px; }
.tut-table th, .tut-table td {
  padding: 10px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--dv-border-subtle);
}
.tut-table tbody tr:last-child td { border-bottom: 0; }
.tut-table th {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dv-text-muted);
  background: var(--dv-bg-surface);
  white-space: nowrap;
}
.tut-table td.f {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 13px;
  color: var(--dv-accent);
  white-space: nowrap;
}
.tut-table td.d { color: var(--dv-text-secondary); }
.tut-table tbody tr:hover td { background: var(--dv-bg-surface); }

/* ------------------------ Nota de cierre -------------------------- */
.tut-legal {
  margin: 40px 0 0;
  padding: 22px 26px;
  border: 1px solid var(--tl-warn-border);
  border-radius: var(--dv-radius-md);
  background: var(--tl-warn-soft);
}
.tut-legal h3 { margin: 0 0 10px; font-size: 18px; color: var(--tl-warn); }
.tut-legal p { margin: 0; font-size: 15px; }

/* --------------------- Pie del tutorial --------------------------- */
.tut-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid var(--dv-border-subtle);
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12px;
  color: var(--dv-text-muted);
}

/* ------------------------ Volver arriba --------------------------- */
.tut-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 900;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border: 1px solid var(--dv-border-subtle);
  border-radius: 50%;
  background: var(--dv-bg-elevated);
  color: var(--dv-text-secondary);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 200ms var(--tl-ease), transform 200ms var(--tl-ease),
              visibility 200ms var(--tl-ease), border-color 160ms var(--tl-ease);
}
.tut-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.tut-top:hover { color: var(--dv-accent); border-color: var(--dv-accent-border); }

@media (max-width: 575.98px) {
  .lab { padding: 22px 18px 8px; }
  .term pre { font-size: 12.5px; }
  .tut-machine div { flex: 1 1 46%; border-right: 0; border-bottom: 1px solid var(--dv-border-subtle); }
}

/* Entradilla del tutorial: fija la promesa antes de la primera sección. */
.tut-lead {
  max-width: var(--tl-measure);
  margin: 0 0 34px;
  font-size: 17.5px;
  line-height: 1.7;
  color: var(--dv-text-secondary);
}

/* =====================================================================
   v1.1.0 — componentes de tutorial extenso
   Genéricos a propósito: capítulos, niveles, bloques plegables, pasos,
   flujo numerado y buscador. Cualquier tutorial futuro los hereda sin
   escribir CSS propio. Lo específico de un tutorial va en su hoja
   tutorial-<slug>.css.
   ===================================================================== */

/* -------------------------- Buscador ------------------------------- */
.tut-search { position: relative; margin: 0 0 34px; }
.tut-search__input {
  width: 100%;
  padding: 12px 16px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 13.5px;
  color: var(--dv-text-primary);
  background: var(--dv-bg-elevated);
  border: 1px solid var(--dv-border-subtle);
  border-radius: var(--dv-radius-sm);
  transition: border-color 150ms var(--tl-ease), box-shadow 150ms var(--tl-ease);
}
.tut-search__input::placeholder { color: var(--dv-text-muted); }
.tut-search__input:focus {
  outline: none;
  border-color: var(--dv-accent);
  box-shadow: 0 0 0 3px var(--dv-accent-ring);
}
.tut-search__status {
  margin: 8px 0 0;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12px;
  color: var(--dv-text-muted);
  min-height: 1.2em;
}
/* Secciones ocultas por el buscador. Atributo propio, no [hidden], para
   no chocar con el <details> del sumario móvil. */
.tut-body > section[data-search-hidden] { display: none; }
mark.tut-hit {
  background: var(--dv-accent-soft);
  color: var(--dv-text-primary);
  border-bottom: 1px solid var(--dv-accent);
  border-radius: 2px;
  padding: 0 1px;
}

/* ------------------------- Capítulo -------------------------------- */
.chapter {
  margin: 64px 0 40px;
  padding: 26px 28px;
  border: 1px solid var(--dv-border-subtle);
  border-left: 3px solid var(--dv-accent);
  border-radius: 0 var(--dv-radius-md) var(--dv-radius-md) 0;
  background: linear-gradient(90deg, var(--dv-accent-soft), transparent 60%);
}
.tut-body > .chapter:first-of-type { margin-top: 24px; }
.chapter__top {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.chapter__num {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dv-accent);
}
/* El h2 del capítulo NO debe heredar el separador superior de .tut-body h2:
   la tarjeta del capítulo ya es el separador. */
.tut-body .chapter__title {
  margin: 0 0 8px;
  padding-top: 0;
  border-top: 0;
  font-size: clamp(24px, 3vw, 32px);
}
.chapter__sub { margin: 0; color: var(--dv-text-secondary); font-size: 15.5px; }

/* --------------------- Insignia de nivel --------------------------- */
.level {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid;
  border-radius: 20px;
  white-space: nowrap;
}
.level--fundamentos { color: var(--tl-l3); border-color: var(--tl-l3); background: var(--tl-l3-soft); }
.level--protocolos  { color: var(--tl-l2); border-color: var(--tl-l2); background: var(--tl-l2-soft); }
.level--intermedio  { color: var(--tl-l4); border-color: var(--tl-l4); background: var(--tl-l4-soft); }
.level--ciber       { color: var(--tl-l7); border-color: var(--tl-l7); background: var(--tl-l7-soft); }
.level--practica    { color: var(--dv-text-secondary); border-color: var(--dv-border-strong); background: var(--dv-bg-surface); }

/* Encabezado de apartado de seguridad dentro de una sección técnica. */
.ciber-head { display: flex; align-items: center; gap: 10px; }
.ciber-head::before {
  content: "";
  width: 3px;
  height: 1.1em;
  border-radius: 2px;
  background: var(--tl-l7);
  flex: none;
}

/* ---------------------- Bloque plegable ---------------------------- */
.reveal {
  margin: 0 0 20px;
  border: 1px solid var(--dv-border-subtle);
  border-radius: var(--dv-radius-sm);
  background: var(--dv-bg-elevated);
  overflow: hidden;
}
.reveal > summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  cursor: pointer;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--dv-accent);
  list-style: none;
}
.reveal > summary::-webkit-details-marker { display: none; }
.reveal > summary::before {
  content: "";
  width: 7px; height: 7px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(-45deg);
  transition: transform 160ms var(--tl-ease);
  flex: none;
}
.reveal[open] > summary::before { transform: rotate(45deg); }
.reveal > summary:hover { color: var(--dv-accent-hover); }
.reveal__body {
  padding: 4px 20px 16px;
  border-top: 1px solid var(--dv-border-subtle);
  font-size: 15px;
}
.reveal__body > :first-child { margin-top: 14px; }
.reveal__body > :last-child { margin-bottom: 0; }

/* ------------------------ Lista de pasos --------------------------- */
.steps { margin: 0 0 22px; padding-left: 0; list-style: none; counter-reset: paso; }
.steps > li {
  position: relative;
  margin: 0 0 12px;
  padding-left: 40px;
  counter-increment: paso;
}
.steps > li::before {
  content: counter(paso, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  width: 26px;
  text-align: center;
  padding: 1px 0;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 10.5px;
  font-weight: 700;
  color: var(--dv-accent);
  background: var(--dv-accent-soft);
  border: 1px solid var(--dv-accent-border);
  border-radius: 3px;
}

/* ------------------- Flujo de análisis numerado -------------------- */
.flow { margin: 0 0 24px; padding-left: 0; list-style: none; counter-reset: paso2; }
.flow > li {
  position: relative;
  margin: 0 0 18px;
  padding: 0 0 0 46px;
  counter-increment: paso2;
}
.flow > li::before {
  content: counter(paso2);
  position: absolute;
  left: 0;
  top: 0;
  width: 30px; height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12px;
  font-weight: 700;
  color: var(--dv-text-inverse);
  background: var(--dv-gradient-brand);
  border-radius: 50%;
}
.flow > li > b {
  display: block;
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 17px;
  color: var(--dv-text-primary);
  margin-bottom: 3px;
}
.flow__tool {
  display: inline-block;
  margin-bottom: 6px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11.5px;
  color: var(--dv-accent);
}
.flow > li > p { margin: 0; font-size: 15px; }

/* ------------------------ Ajustes menores -------------------------- */
/* Ancla heredada: mantiene vivos los enlaces #e1..#e9 de la v1.0.0 sin
   ocupar espacio ni aparecer en el índice. */
.legacy-anchor { display: block; height: 0; overflow: hidden; }

.panes--2 { grid-template-columns: 1fr; }
@media (min-width: 700px) { .panes--2 { grid-template-columns: repeat(2, 1fr); } }

/* La cabecera de un laboratorio ahora lleva insignia de nivel. */
.lab__head { flex-wrap: wrap; }
.lab__head .level { margin-left: auto; }

/* Índice: encabezado de capítulo dentro del sumario. */
.tut-toc__group {
  margin: 16px 0 5px;
  padding: 0 12px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dv-accent);
}
.tut-toc__list > .tut-toc__group:first-child { margin-top: 0; }

/* Línea de objetivo de sección: conserva los «Objetivo:» de los nueve
   ejercicios de la v1.0.0 dentro de las secciones que los sustituyen. */
.tut-goal {
  margin: -14px 0 22px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12.5px;
  color: var(--dv-accent);
}