/* ============================================================
   Vida útil restante · motores turbofan
   Identidad: monitor de salud de motores / aviación. Tema claro,
   acento turquesa de instrumento. Distinto del cuadro eléctrico
   (predictivo, azul) y del laboratorio de visión (verde).
   ============================================================ */

:root {
  --fondo: #eef1f3;
  --fondo-alt: #e3e8ec;
  --panel: #ffffff;
  --panel-alt: #f4f7f9;
  --linea: #d8dee3;
  --linea-fuerte: #bcc6cd;
  --tinta: #14202a;
  --suave: #4f5e69;
  --tenue: #8794a0;
  --turq: #0d7d8a;            /* acento: turquesa de instrumento */
  --turq-claro: #dcf0f2;
  --ambar: #b8730f;
  --rojo: #c23a34;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  color: var(--tinta);
  -webkit-font-smoothing: antialiased;
  background:
    radial-gradient(1100px 520px at 80% -8%, rgba(13, 125, 138, 0.10), transparent 60%),
    linear-gradient(180deg, #f3f6f7 0%, var(--fondo) 100%);
  background-attachment: fixed;
}

main, .cab, .pie { max-width: 1240px; margin: 0 auto; padding-left: clamp(16px, 4vw, 44px); padding-right: clamp(16px, 4vw, 44px); }

/* ------------------------------------------------------------ Cabecera */
.cab { padding-top: clamp(34px, 6vw, 68px); }
.cab__marca { display: flex; align-items: center; gap: 18px; }

/* Turbina: círculos concéntricos girando lento */
.cab__turbina {
  position: relative;
  width: 48px; height: 48px;
  border-radius: 50%;
  border: 2px solid var(--turq);
  flex-shrink: 0;
}
.cab__turbina::before, .cab__turbina::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  border: 1.5px solid var(--turq);
  opacity: 0.55;
}
.cab__turbina::before { inset: 6px; }
.cab__turbina::after { inset: 15px; background: var(--turq); opacity: 1; animation: giro 6s linear infinite; }
@keyframes giro { to { transform: rotate(360deg); } }

.cab__eyebrow {
  margin: 0 0 4px;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--turq);
}
.cab h1 { margin: 0; font-size: clamp(1.5rem, 3.6vw, 2.2rem); font-weight: 700; letter-spacing: -0.025em; }
.cab__sub { margin: 16px 0 0; font-size: 1.05rem; color: var(--suave); max-width: 62ch; }
.cab__sub em { color: var(--turq); font-style: normal; font-weight: 600; }

/* ------------------------------------------------------------ KPIs */
.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--linea); border: 1px solid var(--linea); border-radius: 10px; overflow: hidden; margin: clamp(28px, 4vw, 44px) 0 18px; }
.kpi { padding: 20px; background: var(--panel); }
.kpi--alta { border-top: 2px solid var(--turq); }
.kpi span { display: block; font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--tenue); }
.kpi b { display: block; margin: 8px 0 2px; font-family: var(--mono); font-size: 2rem; font-weight: 700; font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }
.kpi i { font-style: normal; font-size: 0.75rem; color: var(--tenue); }

/* ------------------------------------------------------------ Paneles */
.panel { padding: 22px; background: var(--panel); border: 1px solid var(--linea); border-radius: 10px; box-shadow: 0 1px 2px rgba(20, 32, 42, 0.04); margin-bottom: 18px; }
.panel__cab { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 16px; }
.panel__cab h2 { margin: 0; font-size: 1.1rem; font-weight: 600; letter-spacing: -0.01em; }
.panel__cab p { margin: 3px 0 0; font-size: 0.85rem; color: var(--tenue); }

.grafica { position: relative; height: 220px; }
.grafica--alta { height: 340px; }

.nota { margin: 14px 0 0; padding-top: 13px; border-top: 1px solid var(--linea); font-size: 0.86rem; line-height: 1.66; color: var(--suave); }
.nota strong { color: var(--tinta); }
.nota em { color: var(--turq); font-style: normal; font-family: var(--mono); }
.nota-techo { color: var(--tenue); }

.texto { margin: 0 0 12px; font-size: 0.92rem; line-height: 1.7; color: var(--suave); }
.texto strong { color: var(--tinta); }
.texto em { color: var(--turq); font-style: normal; font-weight: 500; }

/* Selector de motor */
.selector { display: flex; align-items: center; gap: 8px; }
.selector button {
  width: 38px; height: 38px;
  font: inherit; font-size: 0.9rem;
  color: var(--tinta);
  background: var(--panel-alt);
  border: 1px solid var(--linea-fuerte);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s;
}
.selector button:hover { border-color: var(--turq); color: var(--turq); }
.selector select {
  font: inherit; font-size: 0.9rem;
  padding: 8px 12px;
  color: var(--tinta);
  background: var(--panel-alt);
  border: 1px solid var(--linea-fuerte);
  border-radius: 8px;
  cursor: pointer;
}

.lecturas { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--linea); border: 1px solid var(--linea); border-radius: 8px; overflow: hidden; margin-bottom: 16px; }
.lecturas > div { padding: 12px 14px; background: var(--panel-alt); }
.lecturas span { display: block; font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--tenue); margin-bottom: 4px; }
.lecturas b { font-family: var(--mono); font-size: 1.15rem; font-variant-numeric: tabular-nums; }

.rejilla { display: grid; grid-template-columns: 1.4fr 1fr; gap: 18px; }

/* ------------------------------------------------------------ Pie */
.pie { padding-top: 24px; padding-bottom: 56px; margin-top: 20px; border-top: 1px solid var(--linea-fuerte); font-size: 0.82rem; color: var(--tenue); }
.pie p { margin: 0 0 6px; max-width: 82ch; }
.pie strong { color: var(--suave); }
.pie em { color: var(--suave); font-style: normal; }

/* ------------------------------------------------------------ Adaptación */
@media (max-width: 920px) {
  .kpis { grid-template-columns: 1fr 1fr; }
  .rejilla { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .panel__cab { flex-direction: column; }
  .selector { width: 100%; }
  .selector select { flex: 1; }
  .lecturas { grid-template-columns: 1fr; }
}