/* trackertast — portada.css
 * Estilos específicos de la portada, hero y escena interactiva pixel art nativa.
 * 100% offline, compatible con tema claro y oscuro, y responsivo de 320px a pantallas anchas.
 */

.envoltura { max-width: 1180px; margin: 0 auto; padding-inline: var(--gutter); }
.version { font-size: 11px; color: var(--gris); font-weight: 400; margin-left: 2px; }
.ceja { color: var(--acento); margin: 0 0 12px; font-weight: 600; }
.ceja.pixel { font-family: var(--pixel); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; }
.lectura { max-width: var(--ancho-prosa); font-family: var(--serif); font-size: 18px; line-height: 1.7; }
.lectura p { margin: 0 0 16px; }

/* ---------------------------------------------------------------- hero */
.hero {
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: clamp(24px, 4.5vw, 64px);
  align-items: center; padding-block: clamp(36px, 6vw, 76px) clamp(28px, 4vw, 54px);
}
.hero h1 {
  font-size: clamp(32px, 5vw, 58px); font-weight: 800; letter-spacing: -0.035em; line-height: 1.08;
  margin: 0 0 18px;
}
.bajada {
  font-family: var(--serif); font-size: clamp(17px, 1.8vw, 20px); line-height: 1.6; color: var(--tinta-2);
  margin: 0 0 24px; max-width: 38em;
}
.acciones { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 22px; }
.boton {
  display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 10px 20px;
  border-radius: 6px; font-weight: 700; font-size: 15px; background: var(--acento); color: var(--sobre-acento);
  text-decoration: none; transition: filter 0.15s ease;
}
.boton:hover { filter: brightness(1.1); }
.boton.secundario { background: transparent; color: var(--tinta); box-shadow: inset 0 0 0 1.5px var(--linea); }
.boton.secundario:hover { box-shadow: inset 0 0 0 1.5px var(--tinta); }
.instalar-caja {
  display: flex; flex-direction: column; gap: 6px; margin-top: 14px;
}
.instalar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin: 0; font-size: 14px; color: var(--gris);
}
.instalar code {
  background: var(--papel-2); color: var(--tinta); padding: 8px 12px; border-radius: 6px; font-size: 14px;
  border: 1px solid var(--linea); font-family: var(--mono);
}
.instalar-sub { font-size: 12.5px; color: var(--gris); margin-left: 2px; }

/* ---------------------------------------------------------------- escena pixel art interactiva */
.taller-seccion {
  padding-block: clamp(32px, 5vw, 64px);
  border-top: 1px solid var(--linea);
}
.taller-cabecera {
  display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; flex-wrap: wrap;
  margin-bottom: 20px;
}
.etiqueta-demo {
  display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 4px;
  font-family: var(--pixel); font-size: 11px; letter-spacing: 0.06em;
  background: var(--acento-suave); color: var(--acento); border: 1px solid var(--acento);
}

.scene-scroll {
  overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: 8px; border: 1px solid var(--linea);
  background: var(--codigo-fondo); margin-bottom: 18px; box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}
.scene-scroll:focus-visible { outline: 3px solid var(--acento); }

#escena-canvas {
  display: block; width: 100%; max-width: 960px; height: auto; margin: 0 auto;
  image-rendering: pixelated; image-rendering: crisp-edges;
}

.barra-transporte {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px 18px;
  padding: 12px 16px; background: var(--papel-2); border: 1px solid var(--linea); border-radius: 8px;
  margin-bottom: 16px;
}
.transporte-botones { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.btn-icono {
  display: inline-flex; align-items: center; justify-content: center; min-width: 44px; min-height: 44px;
  border-radius: 6px; border: 1px solid var(--linea); background: var(--papel); color: var(--tinta);
  font-size: 18px; cursor: pointer; transition: background 0.15s, border-color 0.15s;
}
.btn-icono:hover:not(:disabled) { background: var(--papel-2); border-color: var(--tinta-2); }
.btn-icono:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-play {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-width: 120px; min-height: 44px;
  padding: 0 16px; border-radius: 6px; border: 1px solid var(--acento); background: var(--acento);
  color: var(--sobre-acento); font-weight: 700; font-size: 14px; cursor: pointer;
  transition: filter 0.15s ease;
}
.btn-play:hover:not(:disabled) { filter: brightness(1.1); }
.btn-play:disabled { opacity: 0.45; cursor: not-allowed; }

.contador-etapas {
  font-family: var(--pixel); font-size: 13px; font-weight: 600; color: var(--acento);
  padding: 8px 12px; background: var(--papel); border: 1px solid var(--linea); border-radius: 4px;
}
.estado-movimiento { font-size: 13.5px; color: var(--gris); margin: 0; font-style: italic; }

/* Selector de etapas (pestañas) */
.nav-etapas {
  display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 8px; margin-bottom: 22px;
}
.btn-etapa {
  display: flex; flex-direction: column; align-items: flex-start; justify-content: center;
  min-height: 52px; padding: 8px 12px; border-radius: 6px; border: 1px solid var(--linea);
  background: var(--papel); color: var(--tinta); cursor: pointer; text-align: left;
  transition: border-color 0.15s, background 0.15s; font-family: var(--sans);
}
.btn-etapa:hover { border-color: var(--acento); background: var(--papel-2); }
.btn-etapa[aria-current="step"], .btn-etapa.activa {
  border-color: var(--acento); background: var(--acento-suave); font-weight: 700;
}
.btn-etapa .num { font-family: var(--pixel); font-size: 11px; color: var(--acento); margin-bottom: 2px; }
.btn-etapa .nom { font-size: 13.5px; line-height: 1.25; }

/* Panel de detalle de la etapa */
.panel-etapa {
  display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.95fr); gap: 24px;
  margin-bottom: 20px;
}
.etapa-caja {
  padding: 22px 24px; border-radius: 8px; border: 1px solid var(--linea); background: var(--papel);
}
.etapa-cabeza {
  display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-bottom: 12px; flex-wrap: wrap;
}
.etapa-caja h3 { margin: 0 0 12px; font-size: clamp(20px, 2.4vw, 26px); font-weight: 800; }
.bajada-etapa { font-family: var(--serif); font-size: 17px; line-height: 1.6; color: var(--tinta-2); margin: 0 0 18px; }

/* Comando copiable */
.comando-copiable-box {
  display: grid; gap: 8px; margin-bottom: 20px;
}
.comando-etiqueta { font-size: 12.5px; font-weight: 700; color: var(--gris); text-transform: uppercase; font-family: var(--pixel); }
.comando-copiable {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  background: var(--codigo-fondo); border: 1px solid var(--linea); border-radius: 6px; padding: 10px 14px;
}
.comando-copiable code {
  color: var(--codigo-clave); font-size: 13.5px; line-height: 1.45; word-break: break-all;
}
.btn-copiar {
  display: inline-flex; align-items: center; justify-content: center; min-height: 36px; padding: 0 12px;
  border-radius: 4px; border: 1px solid #33483E; background: #1C2B26; color: #DDE5E1;
  font-size: 12.5px; font-weight: 600; cursor: pointer; flex-shrink: 0; font-family: var(--sans);
  transition: background 0.15s;
}
.btn-copiar:hover { background: #283C35; color: #FFFFFF; }

/* Ficha de artefactos */
.artefactos-dl {
  display: grid; grid-template-columns: auto 1fr; gap: 8px 16px; font-size: 14.5px;
  padding: 14px 16px; background: var(--papel-2); border-radius: 6px; border: 1px solid var(--linea);
  margin: 0;
}
.artefactos-dl dt { font-family: var(--pixel); font-size: 11px; color: var(--gris); align-self: baseline; }
.artefactos-dl dd { margin: 0; color: var(--tinta-2); }

/* Caja de límites y responsabilidades */
.responsabilidad-caja {
  padding: 22px 24px; border-radius: 8px; border: 1px solid var(--linea); background: var(--papel-2);
  display: flex; flex-direction: column; gap: 14px;
}
.responsabilidad-caja h4 { margin: 0; font-size: 17px; font-weight: 800; }
.responsabilidad-item { display: grid; gap: 4px; }
.responsabilidad-item strong { font-size: 14px; color: var(--tinta); }
.responsabilidad-item p { margin: 0; font-family: var(--serif); font-size: 15px; color: var(--tinta-2); line-height: 1.5; }

.nota-simulacion {
  padding: 12px 16px; border-radius: 6px; background: var(--papel-2); border: 1px dashed var(--linea);
  font-size: 13.5px; color: var(--gris); line-height: 1.55; margin-top: 14px;
}
.nota-simulacion strong { color: var(--tinta-2); }

/* ---------------------------------------------------------------- terminales y bloques */
.terminal {
  border-radius: 8px; overflow: hidden; border: 1px solid var(--linea); background: var(--codigo-fondo);
  margin-block: 20px;
}
.terminal-barra {
  margin: 0; padding: 8px 14px; background: var(--papel-2); color: var(--gris); font-size: 11px;
  display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--linea);
}
.terminal pre {
  margin: 0; padding: 16px 18px; background: var(--codigo-fondo); color: var(--codigo-tinta);
  overflow-x: auto; font-size: 13.5px; line-height: 1.55; white-space: pre-wrap; overflow-wrap: anywhere;
}
.t-verde { color: #86EFAC; font-weight: 600; }
.t-cyan { color: #5EEAD4; }
.t-rojo { color: #FF8A7E; }
.t-gris { color: #8C9E96; }

/* ---------------------------------------------------------------- capítulos y tarjetas */
.capitulo { padding-block: clamp(40px, 7vw, 84px); border-top: 1px solid var(--linea); }
.capitulo-cabeza { max-width: 48rem; margin-bottom: 26px; }
.capitulo h2 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; letter-spacing: -0.025em; margin: 0 0 10px; }

/* ---------------------------------------------------------------- recorrido 60s */
.paso-60s {
  margin-bottom: 28px; border: 1px solid var(--linea); border-radius: 8px; background: var(--papel);
  padding: 20px 22px;
}
.paso-60s-cabeza { display: flex; align-items: baseline; gap: 12px; margin-bottom: 10px; flex-wrap: wrap; }
.paso-60s-cabeza h3 { margin: 0; font-size: 20px; font-weight: 700; }
.paso-60s p { margin: 0 0 12px; font-family: var(--serif); font-size: 16.5px; color: var(--tinta-2); }
.paso-60s .terminal { margin: 0; }

/* ---------------------------------------------------------------- responsabilidades (4 columnas) */
.cuatro-responsabilidades {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; margin-top: 24px;
}
.tarjeta-resp {
  padding: 22px 20px; border: 1px solid var(--linea); border-radius: 8px; background: var(--papel);
  display: grid; gap: 8px; align-content: start;
}
.tarjeta-resp strong { font-size: 18px; color: var(--tinta); }
.tarjeta-resp p { font-family: var(--serif); font-size: 15px; color: var(--tinta-2); margin: 0; line-height: 1.55; }
.tarjeta-resp ul { margin: 0; padding-left: 18px; font-size: 14.5px; color: var(--tinta-2); }
.tarjeta-resp li { margin-bottom: 4px; }

/* ---------------------------------------------------------------- tarjetas de arquitectura */
.tarjetas-3 {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-top: 24px;
}
.tarjeta {
  padding: 22px 20px; border: 1px solid var(--linea); border-radius: 8px; background: var(--papel);
  display: grid; gap: 8px; align-content: start;
}
.tarjeta strong { font-size: 18px; color: var(--tinta); }
.tarjeta p { font-family: var(--serif); font-size: 15.5px; color: var(--tinta-2); margin: 0; line-height: 1.55; }

/* ---------------------------------------------------------------- recorridos (por dónde seguir) */
.recorridos { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.recorrido {
  display: grid; gap: 6px; align-content: start; padding: 20px; border: 1px solid var(--linea); border-radius: 8px;
  color: var(--tinta); text-decoration: none; background: var(--papel); transition: border-color 0.15s, transform 0.15s;
}
.recorrido:hover { border-color: var(--acento); transform: translateY(-2px); }
.recorrido .pixel { color: var(--acento); font-size: 11px; }
.recorrido strong { font-size: 18px; }
.recorrido span:last-child { color: var(--tinta-2); font-size: 14.5px; line-height: 1.5; font-family: var(--serif); }

/* ---------------------------------------------------------------- pie */
.pie {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; padding-block: 28px 44px;
  border-top: 1px solid var(--linea); color: var(--gris); font-size: 14px;
}
.pie img, .pie svg { image-rendering: pixelated; flex-shrink: 0; }
.pie a { color: var(--tinta-2); }
.pie a:hover { color: var(--acento); }

/* ---------------------------------------------------------------- responsive */
@media (max-width: 960px) {
  .hero { grid-template-columns: minmax(0, 1fr); }
  .panel-etapa { grid-template-columns: minmax(0, 1fr); }
  .cuatro-responsabilidades { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tarjetas-3 { grid-template-columns: minmax(0, 1fr); }
  .recorridos { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .nav-etapas { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .barra-transporte { flex-direction: column; align-items: stretch; }
  .transporte-botones { justify-content: space-between; }
}

@media (max-width: 560px) {
  .nav-etapas { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .recorridos { grid-template-columns: minmax(0, 1fr); }
  .cuatro-responsabilidades { grid-template-columns: minmax(0, 1fr); }
  .paso-60s { padding: 14px 16px; }
  .comando-copiable { flex-direction: column; align-items: stretch; }
  .btn-copiar { width: 100%; }
}

@media (max-width: 440px) {
  :root { --gutter: 14px; }
  .hero { padding-block: 24px 32px; }
  .acciones { flex-direction: column; align-items: stretch; }
  .boton { justify-content: center; }
  .terminal pre { padding: 12px 14px; font-size: 12.5px; }
  .nav-etapas { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 320px) {
  :root { --gutter: 10px; }
  .btn-icono { min-width: 40px; min-height: 40px; }
  .btn-play { min-width: 100px; padding: 0 10px; font-size: 13px; }
  .artefactos-dl { grid-template-columns: minmax(0, 1fr); }
}