:root {
  --bg: #0b1220;
  --bg-elev: #121b2e;
  --bg-card: #172238;
  --bg-soft: #1d2b45;
  --line: #2c3d5c;
  --text: #e8eef8;
  --muted: #8fa0bb;
  --gold: #e4b84a;
  --gold-dim: #b8922e;
  --teal: #3ecfbf;
  --itil: #5b8def;
  --cobit: #c084fc;
  --iso: #fb923c;
  --ok: #34d399;
  --bad: #f87171;
  --warn: #fbbf24;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  --radius: 16px;
  --font: "IBM Plex Sans", "Segoe UI", sans-serif;
  --serif: "IBM Plex Serif", Georgia, serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(62, 207, 191, 0.08), transparent 50%),
    radial-gradient(900px 500px at 100% 0%, rgba(228, 184, 74, 0.08), transparent 45%),
    var(--bg);
  color: var(--text);
  font-family: var(--font);
}

button, input { font-family: inherit; }

button {
  cursor: pointer;
}

.carga {
  min-height: 100vh;
  display: grid;
  place-items: center;
  color: var(--muted);
}

.shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 20px 64px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 28px;
}

.marca {
  display: flex;
  gap: 14px;
  align-items: center;
}

.sello {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(160deg, #2a3d2a, #1a2740);
  border: 1px solid #3d5a3a;
  display: grid;
  place-items: center;
  color: var(--gold);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.marca h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 600;
}

.marca p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.puntos {
  text-align: right;
  color: var(--muted);
  font-size: 0.88rem;
}

.puntos strong {
  display: block;
  color: var(--gold);
  font-size: 1.35rem;
}

.metodo {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
  box-shadow: var(--shadow);
  margin-bottom: 28px;
}

.metodo h2 {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 1.2rem;
}

.metodo .lead {
  margin: 0 0 16px;
  color: var(--muted);
}

.pasos {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.paso {
  background: var(--bg-soft);
  border-radius: 12px;
  padding: 12px 14px;
  border: 1px solid transparent;
}

.paso b {
  display: block;
  margin-bottom: 4px;
  color: var(--gold);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.paso span { font-size: 0.92rem; color: #d5deec; }

.marcas-leyenda {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  padding: 5px 10px;
  font-size: 0.78rem;
  font-weight: 600;
  border: 1px solid var(--line);
}

.chip.itil { background: rgba(91, 141, 239, 0.15); color: #9bb8f5; }
.chip.cobit { background: rgba(192, 132, 252, 0.15); color: #d8b4fe; }
.chip.iso { background: rgba(251, 146, 60, 0.15); color: #fdba74; }
.chip.ok { background: rgba(52, 211, 153, 0.14); color: #6ee7b7; }
.chip.bad { background: rgba(248, 113, 113, 0.14); color: #fca5a5; }
.chip.neutro { background: var(--bg-soft); color: var(--muted); }
.chip.critica { background: rgba(248, 113, 113, 0.16); color: #fca5a5; }
.chip.alta { background: rgba(251, 146, 60, 0.16); color: #fdba74; }
.chip.media { background: rgba(251, 191, 36, 0.16); color: #fde68a; }

button.chip {
  font-family: inherit;
  margin: 2px 0;
}

.grid-casos {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}

.tarjeta-caso, .tarjeta-modo, .opcion, .ficha, .pregunta-caja {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.tarjeta-caso, .tarjeta-modo {
  padding: 18px;
  text-align: left;
  color: inherit;
  width: 100%;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.tarjeta-caso:hover, .tarjeta-modo:hover, .opcion:hover {
  transform: translateY(-2px);
  border-color: var(--gold-dim);
}

.tarjeta-caso .id {
  color: var(--gold);
  font-weight: 700;
  font-size: 0.82rem;
}

.tarjeta-caso h3, .tarjeta-modo h3 {
  margin: 6px 0 4px;
  font-family: var(--serif);
  font-size: 1.12rem;
}

.tarjeta-caso p, .tarjeta-modo p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.barra-progreso {
  margin-top: 12px;
  height: 6px;
  background: #24324c;
  border-radius: 99px;
  overflow: hidden;
}

.barra-progreso i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--teal), var(--gold));
}

.aviso {
  margin-top: 18px;
  padding: 14px 16px;
  border: 1px dashed var(--line);
  border-radius: 12px;
  color: var(--muted);
  font-size: 0.9rem;
}

.aviso input { margin-top: 10px; }

.acciones {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0;
}

.btn {
  border: 0;
  border-radius: 10px;
  padding: 10px 16px;
  font-weight: 600;
  background: var(--bg-soft);
  color: var(--text);
}

.btn.primario {
  background: linear-gradient(180deg, #f0c65c, #c99622);
  color: #23180a;
}

.btn.ghost {
  background: transparent;
  border: 1px solid var(--line);
}

.secciones {
  display: grid;
  gap: 14px;
}

.ficha { padding: 18px 20px; }

.ficha h3 {
  margin: 0 0 10px;
  font-family: var(--serif);
}

.lista {
  margin: 0;
  padding-left: 18px;
  color: #d7e0ee;
}

.lista li { margin: 6px 0; }

.dos-col {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 14px;
}

.grid-modos {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.hud {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.pregunta-caja { padding: 22px; }

.enunciado {
  font-family: var(--serif);
  font-size: 1.25rem;
  margin: 0 0 8px;
}

.contexto {
  color: var(--muted);
  margin: 0 0 16px;
}

.evidencia {
  background: #10192b;
  border-left: 3px solid var(--gold);
  padding: 12px 14px;
  border-radius: 0 10px 10px 0;
  margin: 0 0 18px;
}

.opciones {
  display: grid;
  gap: 10px;
}

.opcion {
  padding: 14px 16px;
  text-align: left;
  color: inherit;
}

.opcion.correcta {
  border-color: var(--ok);
  background: rgba(52, 211, 153, 0.1);
}

.opcion.incorrecta {
  border-color: var(--bad);
  background: rgba(248, 113, 113, 0.1);
}

.opcion:disabled { cursor: default; transform: none; }

.feedback {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.feedback h4 {
  margin: 0 0 8px;
  font-family: var(--serif);
}

.mini-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.mini {
  background: var(--bg-soft);
  border-radius: 10px;
  padding: 10px 12px;
}

.mini b {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gold);
  margin-bottom: 4px;
}

.resultado {
  text-align: center;
  padding: 36px 20px;
}

.resultado .nota {
  font-family: var(--serif);
  font-size: 3rem;
  color: var(--gold);
  margin: 8px 0;
}

.ruta-pasos {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.ruta-pasos span {
  font-size: 0.75rem;
  padding: 4px 8px;
  border-radius: 99px;
  background: var(--bg-soft);
  color: var(--muted);
}

.ruta-pasos span.activo {
  background: rgba(228, 184, 74, 0.18);
  color: var(--gold);
}

.tablero {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.col-marco {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  min-height: 280px;
}

.col-marco.itil { border-top: 4px solid var(--itil); }
.col-marco.cobit { border-top: 4px solid var(--cobit); }
.col-marco.iso { border-top: 4px solid var(--iso); }

.col-marco h3 {
  margin: 0 0 6px;
  font-family: var(--serif);
  font-size: 1.05rem;
}

.col-marco .rol {
  color: var(--muted);
  font-size: 0.82rem;
  margin: 0 0 14px;
}

.marco-btn {
  width: 100%;
  text-align: left;
  margin-bottom: 8px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  color: inherit;
}

.marco-btn .meta {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  margin-top: 4px;
}

.marco-btn.hecho {
  border-color: rgba(52, 211, 153, 0.45);
  background: rgba(52, 211, 153, 0.08);
}

.marco-btn.activo {
  border-color: var(--gold);
  box-shadow: 0 0 0 1px var(--gold);
}

.check {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.check .caja {
  width: 18px;
  height: 18px;
  border: 2px solid #6b7c99;
  border-radius: 4px;
  flex: 0 0 18px;
  margin-top: 2px;
}

.check.marcada .caja {
  background: var(--gold);
  border-color: var(--gold);
}

.solucion-card {
  background: var(--bg-soft);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 10px;
}

.solucion-card h4 {
  margin: 0 0 8px;
  font-family: var(--serif);
}

.mapa-cierre {
  display: grid;
  gap: 10px;
}

@media (max-width: 860px) {
  .pasos, .dos-col, .grid-modos, .mini-grid, .tablero { grid-template-columns: 1fr; }
  .topbar { flex-direction: column; }
  .puntos { text-align: left; }
}