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

:root {
  /* Acero cepillado y cristal templado: los materiales del objeto real */
  --steel-950: #0F1317;
  --steel-900: #161B21;
  --steel-850: #1B2128;
  --steel-800: #222A33;
  --steel-700: #2E3843;
  --steel-500: #56646F;
  --steel-300: #93A2AF;
  --steel-100: #DCE4EB;

  /* Canto del cristal templado: el unico color frio saturado */
  --glass: #7FD1E3;
  --glass-dim: rgba(127, 209, 227, 0.14);

  /* Indicadores del pasillo: flecha verde, cruz roja */
  --go: #34D97F;
  --stop: #FF4F60;
  --warn: #FFB13D;

  --radius: 3px;
  --rail: 232px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--steel-950);
  color: var(--steel-100);
  font-family: 'Barlow', system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.5;
}

body::before {
  /* Textura sutil de metal cepillado */
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    92deg, transparent 0 2px, rgba(255, 255, 255, 0.012) 2px 3px
  );
  pointer-events: none;
  z-index: 0;
}

.mono { font-family: 'IBM Plex Mono', ui-monospace, monospace; }

.eyebrow {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel-500);
}

h1, h2, h3 {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin: 0;
}

/* ---------------------------------------------------------- login */
#login {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: var(--steel-950);
  z-index: 50;
}

.login-card {
  width: min(360px, 90vw);
  border: 1px solid var(--steel-700);
  background: var(--steel-900);
  padding: 32px;
}

.login-card h1 {
  font-size: 30px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.login-card .eyebrow { margin-bottom: 26px; display: block; }

/* ---------------------------------------------------------- shell */
#app { display: none; position: relative; z-index: 1; }
#app.on { display: grid; grid-template-columns: var(--rail) 1fr; min-height: 100vh; }

.rail {
  border-right: 1px solid var(--steel-800);
  background: var(--steel-900);
  padding: 22px 0;
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

.brand {
  padding: 0 20px 22px;
  border-bottom: 1px solid var(--steel-800);
  margin-bottom: 14px;
}

.brand strong {
  display: block;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.rail nav { display: flex; flex-direction: column; }

.rail nav button {
  appearance: none;
  border: 0;
  background: none;
  color: var(--steel-300);
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-align: left;
  padding: 10px 20px;
  cursor: pointer;
  border-left: 2px solid transparent;
}

.rail nav button:hover { color: var(--steel-100); background: var(--steel-850); }

.rail nav button.sel {
  color: var(--glass);
  border-left-color: var(--glass);
  background: var(--glass-dim);
}

.rail .foot { margin-top: auto; padding: 16px 20px 0; border-top: 1px solid var(--steel-800); }

main { padding: 30px 34px 70px; max-width: 1180px; }

.head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 26px;
  flex-wrap: wrap;
}

.head h2 { font-size: 27px; letter-spacing: 0.05em; text-transform: uppercase; }

.panel { display: none; }
.panel.on { display: block; }

/* ---------------------------------------------------------- mimico */
.lane {
  border: 1px solid var(--steel-800);
  background: var(--steel-900);
  margin-bottom: 12px;
}

.lane-top {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  padding: 14px 16px;
  align-items: center;
}

.lane-id {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--glass);
  letter-spacing: 0.04em;
}

.lane-label {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.lane-meta { font-size: 12.5px; color: var(--steel-500); }

/* Diagrama: pedestal | cristal | pedestal */
.mimic {
  display: grid;
  grid-template-columns: 13px 1fr 13px;
  gap: 5px;
  align-items: center;
  height: 40px;
  width: 168px;
}

.pedestal { height: 100%; background: var(--steel-700); border-radius: 1px; }

.corridor {
  position: relative;
  height: 100%;
  background: repeating-linear-gradient(
    45deg, transparent 0 5px, rgba(147, 162, 175, 0.07) 5px 10px
  );
  overflow: hidden;
}

/* Las dos hojas de cristal */
.corridor::before, .corridor::after {
  content: '';
  position: absolute;
  top: 6px;
  bottom: 6px;
  width: 50%;
  background: linear-gradient(180deg, rgba(127, 209, 227, 0.5), rgba(127, 209, 227, 0.22));
  border: 1px solid rgba(127, 209, 227, 0.65);
  transition: transform 420ms cubic-bezier(0.32, 0.72, 0.28, 1);
}

.corridor::before { left: 0; }
.corridor::after { right: 0; }

.lane.open .corridor::before { transform: translateX(-102%); }
.lane.open .corridor::after { transform: translateX(102%); }

.lane.fault .corridor::before,
.lane.fault .corridor::after {
  background: linear-gradient(180deg, rgba(255, 79, 96, 0.4), rgba(255, 79, 96, 0.16));
  border-color: rgba(255, 79, 96, 0.7);
}

.lane.off { opacity: 0.42; }

.lamp {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--steel-700);
  display: inline-block;
  vertical-align: -1px;
  margin-right: 7px;
}

.lamp.go { background: var(--go); box-shadow: 0 0 9px rgba(52, 217, 127, 0.7); }
.lamp.stop { background: var(--stop); box-shadow: 0 0 9px rgba(255, 79, 96, 0.7); }
.lamp.warn { background: var(--warn); }

.lane-stats {
  display: flex;
  gap: 22px;
  padding: 9px 16px;
  border-top: 1px solid var(--steel-850);
  background: var(--steel-850);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11.5px;
  color: var(--steel-500);
  flex-wrap: wrap;
}

.lane-stats b { color: var(--steel-100); font-weight: 500; }
.lane-stats .bad { color: var(--stop); }

.lane-edit {
  display: none;
  padding: 16px;
  border-top: 1px solid var(--steel-800);
  grid-template-columns: repeat(auto-fit, minmax(178px, 1fr));
  gap: 13px;
}

.lane.editing .lane-edit { display: grid; }

/* ---------------------------------------------------------- forms */
label.f { display: block; }

label.f span {
  display: block;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--steel-500);
  margin-bottom: 5px;
}

input, select, textarea {
  width: 100%;
  background: var(--steel-950);
  border: 1px solid var(--steel-700);
  color: var(--steel-100);
  padding: 8px 10px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  border-radius: var(--radius);
}

input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--glass);
  outline-offset: -1px;
  border-color: transparent;
}

button.btn {
  appearance: none;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  padding: 8px 15px;
  border-radius: var(--radius);
  border: 1px solid var(--steel-700);
  background: var(--steel-800);
  color: var(--steel-100);
  cursor: pointer;
}

button.btn:hover { border-color: var(--steel-500); }
button.btn:focus-visible { outline: 2px solid var(--glass); outline-offset: 2px; }

button.btn.primary { background: var(--glass); border-color: var(--glass); color: var(--steel-950); }
button.btn.primary:hover { filter: brightness(1.1); }
button.btn.ghost { background: none; }
button.btn.danger { color: var(--stop); border-color: rgba(255, 79, 96, 0.4); background: none; }
button.btn.sm { padding: 5px 10px; font-size: 12px; }

.row { display: flex; gap: 9px; align-items: center; flex-wrap: wrap; }

.card {
  border: 1px solid var(--steel-800);
  background: var(--steel-900);
  padding: 18px;
  margin-bottom: 13px;
}

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 13px; }

.hint { font-size: 12.5px; color: var(--steel-500); margin-top: 7px; }

.keyline {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  background: var(--steel-950);
  border: 1px solid var(--steel-800);
  padding: 9px 11px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 7px;
  word-break: break-all;
}

#toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  background: var(--steel-800);
  border: 1px solid var(--steel-700);
  border-left: 3px solid var(--glass);
  padding: 12px 17px;
  font-size: 13.5px;
  max-width: 340px;
  opacity: 0;
  transform: translateY(9px);
  transition: opacity 180ms, transform 180ms;
  pointer-events: none;
  z-index: 90;
}

#toast.on { opacity: 1; transform: none; }
#toast.err { border-left-color: var(--stop); }

.empty { border: 1px dashed var(--steel-700); padding: 34px; text-align: center; color: var(--steel-500); }

@media (max-width: 780px) {
  #app.on { grid-template-columns: 1fr; }
  .rail { position: static; height: auto; }
  .rail nav { flex-direction: row; overflow-x: auto; }
  main { padding: 20px 16px 60px; }
  .lane-top { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 1ms !important; }
}