/* ╔══════════════════════════════════════════════════════════════════╗
   ║  CPU SIM — styles.css                                           ║
   ║  Sistema de diseño unificado para todos los módulos             ║
   ╚══════════════════════════════════════════════════════════════════╝ */


/* ================================================================
   §1  VARIABLES DE DISEÑO — Constantes y paleta de colores
   ================================================================ */

:root {
  /* Colores base */
  --teal:    #6CBDB5;
  --teal-lt: #93CCC6;
  --cream:   #E3DFBA;
  --sage:    #C8D6BF;

  /* Paleta de procesos (consistente en ambos temas) */
  --p0: #6CBDB5;
  --p1: #4fa89f;
  --p2: #C8D6BF;
  --p3: #d4c97a;
  --p4: #93CCC6;
  --p5: #a8c8c2;
  --p6: #b5d4ce;
  --p7: #d4e3c8;
  --p8: #e8e4c6;
  --p9: #b0c9c4;

  /* Tipografía */
  --mono: 'Courier New', monospace;
  --sans: 'Segoe UI', sans-serif;

  /* Transición suave de tema */
  --transition-theme: background 0.25s, color 0.25s, border-color 0.25s;
}


/* ================================================================
   §2  TEMAS — Oscuro (default) y Claro
   ================================================================ */

/* ── Tema oscuro ── */
html[data-theme="dark"] {
  --bg:       #111615;
  --surface:  #1a1f1e;
  --surface2: #212926;
  --border:   #2e3a38;
  --border2:  #3a4a47;
  --text:     #dde8e6;
  --text-sec: #8aafa8;
  --muted:    #5a7870;
  --dark:     #0d1211;
  --input-bg: #141918;
  --row-odd:  #1a1f1e;
  --row-even: #1e2523;
  --log-bg:   #0f1413;
  --log-text: #8aafa8;
  --hero-bg:  #0d1211;
  --card-bg:  #1a1f1e;
  --card-hover: rgba(108,189,181,0.06);
  --tag-bg:   rgba(108,189,181,0.1);
  --tag-border: rgba(108,189,181,0.25);
  --metrics-bg: rgba(227,223,186,0.05);
  --header-bg: #0d1211;
  --footer-bg: #141918;
  --footer-border: #2e3a38;
  --footer-text: #5a7870;
  color-scheme: dark;
}

/* ── Tema claro ── */
html[data-theme="light"] {
  --bg:       #f5f3e8;
  --surface:  #fdfcf6;
  --surface2: #f0ede0;
  --border:   #dddbc8;
  --border2:  #c8c4a8;
  --text:     #1A1F1E;
  --text-sec: #4a5a52;
  --muted:    #7a8a82;
  --dark:     #1A1F1E;
  --input-bg: #f5f3e8;
  --row-odd:  #fdfcf6;
  --row-even: #f5f3e8;
  --log-bg:   #1A1F1E;
  --log-text: #8aafa8;
  --hero-bg:  #1A1F1E;
  --card-bg:  #fdfcf6;
  --card-hover: rgba(108,189,181,0.06);
  --tag-bg:   rgba(108,189,181,0.12);
  --tag-border: rgba(108,189,181,0.3);
  --metrics-bg: #f0ede0;
  --header-bg: #1A1F1E;
  --footer-bg: #fdfcf6;
  --footer-border: #dddbc8;
  --footer-text: #7a8a82;
  color-scheme: light;
}


/* ================================================================
   §3  BASE — Reset y estilos globales
   ================================================================ */

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 13px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: var(--transition-theme);
}

.hidden { display: none !important; }
.screen { flex: 1; display: flex; flex-direction: column; min-height: 0; background: var(--bg); }


/* ================================================================
   §4  HEADER
   ================================================================ */

header {
  background: var(--header-bg);
  border-bottom: 2px solid var(--teal);
  padding: 13px 24px;
  display: flex;
  align-items: center;
  gap: 14px;
}

header .logo {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--teal);
  letter-spacing: 3px;
  border: 1px solid var(--teal);
  padding: 2px 7px;
  border-radius: 2px;
}

header h1 {
  font-size: 14px;
  font-weight: 600;
  color: var(--cream);
  letter-spacing: 0.3px;
}

.header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-back {
  margin-left: 0;
  background: transparent;
  border: 1px solid rgba(108,189,181,0.4);
  color: var(--teal-lt);
  font-size: 11px;
  padding: 5px 14px;
  cursor: pointer;
  transition: all 0.15s;
  border-radius: 3px;
  font-family: var(--mono);
  letter-spacing: 0.5px;
}

.header-back:hover {
  background: rgba(108,189,181,0.15);
  border-color: var(--teal);
  color: var(--cream);
}

.theme-toggle {
  background: transparent;
  border: 1px solid rgba(108,189,181,0.35);
  color: var(--teal-lt);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  padding: 0;
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: rgba(108,189,181,0.12);
  border-color: var(--teal);
  transform: rotate(20deg) scale(1.1);
  color: var(--cream);
}


/* ================================================================
   §5  FOOTER
   ================================================================ */

.footer {
  background: var(--footer-bg);
  border-top: 1px solid var(--footer-border);
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.footer span:first-child { color: var(--teal); }
.footer span:last-child  { color: var(--footer-text); }


/* ================================================================
   §6  PANTALLA DE INICIO — LAUNCHER
   ================================================================ */

#screen-home { flex: 1; display: flex; flex-direction: column; }

/* ── Hero ── */
.home-hero {
  position: relative;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--header-bg);
}

.home-hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 60% at 20% 50%, rgba(108,189,181,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 80% 40%, rgba(200,214,191,0.08) 0%, transparent 60%),
    repeating-linear-gradient(
      0deg, transparent, transparent 39px,
      rgba(108,189,181,0.04) 39px, rgba(108,189,181,0.04) 40px
    ),
    repeating-linear-gradient(
      90deg, transparent, transparent 79px,
      rgba(108,189,181,0.04) 79px, rgba(108,189,181,0.04) 80px
    );
}

.home-hero-content {
  position: relative;
  text-align: center;
  padding: 40px 24px;
  z-index: 1;
}

.home-sub {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--teal);
  letter-spacing: 2.5px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.home-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--cream);
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}

.home-desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}

/* ── Grid de cards ── */
.home-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  padding: 32px 32px 40px;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.home-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 28px 24px;
  cursor: pointer;
  transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.home-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--teal), var(--teal-lt));
  opacity: 0;
  transition: opacity 0.18s;
}

.home-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(108,189,181,0.12);
  border-color: var(--teal);
}

.home-card:hover::before { opacity: 1; }

.home-card-icon { font-size: 28px; line-height: 1; }

.home-card-num {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--teal);
  letter-spacing: 2px;
  margin-bottom: 2px;
}

.home-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}

.home-card p {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.6;
  flex: 1;
}

.home-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  list-style: none;
  padding: 0;
  margin: 4px 0 0;
}

.home-card-tags li {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--teal);
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  padding: 2px 7px;
  border-radius: 3px;
  letter-spacing: 0.3px;
}

.home-card-cta {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--teal);
  letter-spacing: 0.5px;
  margin-top: 4px;
  transition: letter-spacing 0.15s;
}

.home-card:hover .home-card-cta { letter-spacing: 1.5px; }


/* ================================================================
   §7  COMPONENTES REUTILIZABLES
   ================================================================ */

/* ── Layout ── */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 20px 24px;
  flex: 1;
}

/* ── Panel ── */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 16px;
  overflow: hidden;
}

.panel-header {
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
  padding: 7px 14px;
  font-size: 10px;
  font-family: var(--mono);
  color: var(--muted);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-header::before { content: '◆'; color: var(--teal); font-size: 8px; }
.panel-body { padding: 14px; }

/* ── Controles ── */
.controls-row {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  flex-wrap: wrap;
}

.field { display: flex; flex-direction: column; gap: 4px; }

label {
  font-size: 10px;
  color: var(--muted);
  font-family: var(--mono);
  letter-spacing: 0.8px;
  text-transform: uppercase;
}

input[type=number], select {
  background: var(--input-bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 9px;
  font-family: var(--mono);
  font-size: 12px;
  border-radius: 4px;
  width: 90px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

select { width: 185px; cursor: pointer; }

input[type=number]:focus, select:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 2px rgba(108,189,181,0.18);
}

/* ── Botones ── */
button {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 7px 16px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s;
  text-transform: uppercase;
}

button:hover { background: var(--cream); border-color: var(--muted); color: var(--dark); }
button.primary { background: var(--teal); border-color: var(--teal); color: #fff; font-weight: 600; }
button.primary:hover { background: #5aada5; }
button.danger { color: #a09070; border-color: #ccc4a0; }
button.danger:hover { background: #f0ede0; color: var(--dark); }

/* ── Tablas ── */
table { width: 100%; border-collapse: collapse; font-family: var(--mono); font-size: 12px; }

thead th {
  background: var(--cream);
  border: 1px solid var(--border);
  padding: 7px 10px;
  text-align: center;
  color: var(--muted);
  font-weight: 700;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

tbody tr:nth-child(odd)  { background: var(--row-odd); }
tbody tr:nth-child(even) { background: var(--row-even); }
tbody tr:hover { background: rgba(108,189,181,0.07); }

tbody td {
  border: 1px solid var(--border);
  padding: 5px 10px;
  text-align: center;
}

tbody td input[type=number] {
  width: 70px;
  padding: 3px 6px;
  text-align: center;
  border-color: transparent;
  background: transparent;
}

tbody td input[type=number]:focus {
  border-color: var(--teal);
  background: var(--surface);
  box-shadow: 0 0 0 2px rgba(108,189,181,0.15);
}

.pid-cell { color: var(--teal); font-weight: bold; font-size: 13px; }

.results-table thead th { font-size: 10px; }
.results-table td { font-size: 12px; }


/* ================================================================
   §8  DIAGRAMA DE GANTT
   Posicionamiento absoluto: cada bloque con left/width exactos
   ================================================================ */

/* Wrapper con scroll horizontal */
.gantt-scroll-wrapper {
  overflow-x: auto;
  overflow-y: visible;
  padding-bottom: 4px;
}

.gantt-inner { display: block; position: relative; }

/* Fila (label + track) */
.gantt-row {
  display: flex;
  align-items: center;
  margin-bottom: 4px;
}

.gantt-label {
  width: 56px;
  min-width: 56px;
  flex-shrink: 0;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  text-align: right;
  padding-right: 8px;
  user-select: none;
}

/* Pista */
.gantt-track {
  position: relative;
  height: 34px;
  flex-shrink: 0;
  border: 1px solid var(--border);
  background: var(--input-bg);
  border-radius: 3px;
  overflow: visible;
}

/* Líneas de cuadrícula */
.g-grid {
  position: absolute;
  top: 0; bottom: 0;
  width: 1px;
  background: var(--border);
  opacity: 0.6;
  pointer-events: none;
}

/* Bloque de proceso/idle/ctx */
.gantt-block {
  position: absolute;
  top: 1px;
  height: calc(100% - 2px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  border-radius: 2px;
  overflow: hidden;
  cursor: default;
  transition: filter 0.12s;
  border: none;
}

.gantt-block:hover { filter: brightness(0.88); }

/* Etiquetas de tiempo encima del bloque */
.time-label-wrap {
  position: absolute;
  top: -18px;
  left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  pointer-events: none;
}

.tl {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--muted);
  background: var(--surface);
  padding: 0 2px;
  border-radius: 2px;
  white-space: nowrap;
  user-select: none;
  line-height: 1.2;
}

.tl-start { transform: translateX(-50%); }
.tl-end   { transform: translateX(50%);  }

/* Eje temporal */
.gantt-axis-row {
  position: relative;
  margin-left: 56px;
  height: 18px;
  margin-bottom: 2px;
}

.axis-tick {
  position: absolute;
  font-family: var(--mono);
  font-size: 9px;
  color: var(--muted);
  transform: translateX(-50%);
  white-space: nowrap;
  user-select: none;
}

/* Estado idle */
.gantt-block.idle {
  background: rgba(200,214,191,0.18);
  border: 1px dashed rgba(122,138,130,0.35);
  color: var(--muted);
  font-style: italic;
  font-weight: 400;
}

/* Estado ctx switch */
.gantt-block.ctx {
  background: repeating-linear-gradient(
    45deg,
    rgba(122,138,130,0.30) 0px, rgba(122,138,130,0.30) 3px,
    rgba(122,138,130,0.08) 3px, rgba(122,138,130,0.08) 6px
  );
  border: 1px solid rgba(122,138,130,0.5);
  color: var(--muted);
  font-size: 8px;
  letter-spacing: 0.5px;
  font-weight: 400;
}

/* Paleta de procesos */
.p0 { background: var(--p0); color: #fff; }
.p1 { background: var(--p1); color: #fff; }
.p2 { background: var(--p2); color: var(--dark); }
.p3 { background: var(--p3); color: var(--dark); }
.p4 { background: var(--p4); color: var(--dark); }
.p5 { background: var(--p5); color: var(--dark); }
.p6 { background: var(--p6); color: var(--dark); }
.p7 { background: var(--p7); color: var(--dark); }
.p8 { background: var(--p8); color: var(--dark); }
.p9 { background: var(--p9); color: var(--dark); }

/* Separador CPU / procesos */
.gantt-separator {
  height: 1px;
  background: var(--border);
  margin: 6px 0 6px 56px;
  opacity: 0.6;
}


/* ================================================================
   §9  LEYENDA Y MÉTRICAS
   ================================================================ */

/* ── Leyenda ── */
.legend {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  padding: 8px 14px;
  border-top: 1px solid var(--border);
  background: var(--bg);
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
  align-items: center;
}

.legend-item { display: flex; align-items: center; gap: 5px; }

.legend-dot {
  width: 10px; height: 10px;
  border-radius: 2px;
  flex-shrink: 0;
}

.legend-dot.idle {
  background: rgba(200,214,191,0.4);
  border: 1px dashed rgba(122,138,130,0.5);
}

.legend-dot.ctx {
  background: repeating-linear-gradient(45deg,
    rgba(122,138,130,0.5) 0px, rgba(122,138,130,0.5) 2px,
    transparent 2px, transparent 4px);
  border: 1px solid rgba(122,138,130,0.5);
}

/* ── Barra de métricas ── */
.metrics {
  display: flex;
  flex-wrap: wrap;
  border-top: 1px solid var(--border);
  background: var(--metrics-bg);
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 10px 22px;
  border-right: 1px solid var(--border);
}

.metric:last-child { border-right: none; }

.metric .m-label {
  font-size: 9px;
  font-family: var(--mono);
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.metric .m-value {
  font-size: 18px;
  font-family: var(--mono);
  color: var(--teal);
  font-weight: 700;
}

.metric .m-detail {
  font-size: 9px;
  font-family: var(--mono);
  color: var(--muted);
  letter-spacing: 0.3px;
}


/* ── §9.1  Eficiencia — estados de color ── */

/** Eficiencia alta (≥ 80%): destaca en verde teal */
.metric-efficiency {
  position: relative;
  border-left: 2px solid var(--teal);
  padding-left: 20px;
}

.metric-efficiency .m-value {
  font-size: 20px;
}

.metric-efficiency.eff-high .m-value { color: var(--teal); }
.metric-efficiency.eff-mid  .m-value { color: var(--cream); }
.metric-efficiency.eff-low  .m-value { color: #ff5555; }

.metric-efficiency.eff-high { border-left-color: var(--teal); }
.metric-efficiency.eff-mid  { border-left-color: var(--cream); }
.metric-efficiency.eff-low  { border-left-color: #ff5555; }


/* ================================================================
   §10  LOG DE EJECUCIÓN
   ================================================================ */

.log-box {
  background: var(--header-bg);
  padding: 12px 14px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--log-text);
  max-height: 300px;
  overflow-y: auto;
  line-height: 2;
}

.log-box .ctx-line { color: var(--teal-lt); }
.log-box .run-line { color: var(--sage); }
.log-box .end-line { color: #90b0a0; font-style: italic; }
.log-box .sep      { color: #2e3c3a; }
.log-box .hdr      { color: var(--teal); letter-spacing: 1px; font-weight: bold; }


/* ================================================================
   §11  MÓDULO 2 — ENVEJECIMIENTO (AGING)
   ================================================================ */

.aging-section {
  background: var(--bg);
  flex: 1;
}

.aging-hero {
  max-width: 1280px;
  margin: 0 auto;
  padding: 28px 24px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--header-bg);
}

.aging-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 2px;
  color: var(--teal);
  border: 1px solid var(--teal);
  padding: 2px 8px;
  border-radius: 2px;
  margin-bottom: 10px;
}

.aging-hero h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--cream);
  margin-bottom: 8px;
}

.aging-hero p {
  font-size: 13px;
  color: #93a89c;
  line-height: 1.6;
}

.aging-hero code {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--teal-lt);
  background: rgba(108,189,181,0.1);
  padding: 2px 8px;
  border-radius: 3px;
  border: 1px solid rgba(108,189,181,0.2);
}

.aging-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 20px 24px 0;
}

.ag-calc-cell {
  font-family: var(--mono);
  font-size: 11px;
  color: #93a89c;
  text-align: left !important;
  padding: 5px 12px !important;
}

.ag-pred-cell {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--teal) !important;
  font-size: 13px;
}

.ag-next-row td { color: rgba(108,189,181,0.5) !important; font-style: italic; }
.ag-next-row .ag-pred-cell { color: var(--teal) !important; font-style: normal; }

.ag-chart-wrap {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid rgba(108,189,181,0.15);
  border-radius: 4px;
  padding: 16px;
}

#ag-canvas { width: 100% !important; height: 280px !important; }

.ag-chart-legend {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
}

.ag-leg-dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; }

.ag-td-input input[type=number] {
  width: 80px;
  padding: 3px 6px;
  text-align: center;
  background: transparent;
  border-color: transparent;
}

.ag-td-input input[type=number]:focus {
  border-color: var(--teal);
  background: var(--input-bg);
}


/* ================================================================
   §12  MÓDULO 3 — EFICIENCIA Y SOBRECARGA
   ================================================================ */

#ov-canvas {
  width: 100%;
  height: 280px;
  background: #1a1f1e;
  border-radius: 4px;
  display: block;
}


/* ================================================================
   §13  MÓDULO 4 — RESOLUCIÓN DE EJERCICIOS
   ================================================================ */

.ex-presets-row { display: flex; gap: 10px; flex-wrap: wrap; }
.ex-preset-btn { 
  display: flex; flex-direction: column; align-items: flex-start; gap: 4px;
  background: var(--surface2); border: 1px solid var(--border);
  padding: 10px 14px; border-radius: 6px; cursor: pointer; transition: all 0.15s;
  text-transform: none; font-family: var(--sans); height: auto;
}
.ex-preset-btn:hover { background: var(--card-hover); border-color: var(--teal); box-shadow: 0 4px 12px rgba(108,189,181,0.08); }
.ex-preset-num { font-family: var(--mono); font-size: 11px; font-weight: bold; color: var(--teal); letter-spacing: 0.5px; }
.ex-preset-desc { font-size: 12px; color: var(--text); }

.ex-compare-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}
.ex-compare-header {
  background: var(--surface2);
  padding: 10px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: bold;
  color: var(--muted);
  text-transform: uppercase;
  text-align: center;
}
.ex-compare-header:first-child { text-align: left; }
.ex-compare-label {
  background: var(--surface);
  padding: 10px;
  font-size: 13px;
  color: var(--text);
  display: flex;
  align-items: center;
}
.ex-compare-val {
  background: var(--surface);
  padding: 10px;
  font-family: var(--mono);
  font-size: 16px;
  font-weight: bold;
  color: var(--text);
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}
.ex-better { color: var(--teal); background: rgba(108,189,181,0.05); }
.ex-worse { color: #ff6b6b; } /* color rojizo suave */

.ex-detail-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 12px;
}
.ex-detail-block {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 12px;
}
.ex-detail-title {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.ex-detail-formula {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--teal-lt);
  margin-bottom: 6px;
  line-height: 1.4;
}
.ex-detail-calc {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text);
}
.ex-detail-calc strong { color: var(--cream); font-size: 14px; }

.ex-quantum-note {
  margin-top: 12px;
  font-size: 12px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
}
.ex-q-badge {
  font-family: var(--mono);
  font-size: 11px;
  background: var(--tag-bg);
  color: var(--teal);
  padding: 2px 6px;
  border-radius: 3px;
  border: 1px solid var(--tag-border);
}

.ex-th-group { background: var(--surface2); color: var(--teal); border-bottom: none; }
.ex-th-group-2 { color: var(--cream); }
.ex-col-sep { border-left: 2px solid var(--border) !important; }

/* ── Fórmulas tipo LaTeX (Módulo 4) ── */
.math-block {
  font-family: 'Times New Roman', Cambria, 'MathJax_Math', serif;
  font-size: 17px;
  color: var(--cream);
  background: var(--surface2);
  padding: 8px 16px;
  border-radius: 4px;
  border-left: 2px solid var(--teal);
  margin-top: 6px;
  display: inline-block;
  letter-spacing: 0.5px;
}
.math-var { font-style: italic; }
.math-sub { font-size: 12px; vertical-align: sub; font-style: italic; margin-left: 1px; }
.math-frac {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  vertical-align: middle;
  margin: 0 6px;
  line-height: 1.2;
}
.math-num {
  padding: 0 6px 2px;
  border-bottom: 1px solid var(--cream);
}
.math-den {
  padding: 2px 6px 0;
}

/* ================================================================
   §14  OVERRIDES POR TEMA — Light mode
   ================================================================ */

html[data-theme="light"] .log-box {
  background: var(--log-bg);
  color: var(--log-text);
}

html[data-theme="light"] header {
  background: var(--header-bg);
}

/* Hero siempre oscuro en ambos temas */
.home-hero { background: var(--header-bg); }
.home-hero-content .home-title { color: var(--cream); }
.home-hero-content .home-sub   { color: var(--teal-lt); }
.home-hero-content .home-desc  { color: #93a89c; }

html[data-theme="light"] .home-card {
  background: var(--card-bg);
  border-color: var(--border);
  color: var(--text);
}

html[data-theme="light"] .home-card h3 { color: var(--text); }
html[data-theme="light"] .home-card p  { color: var(--muted); }

html[data-theme="light"] .panel-header {
  background: var(--surface2);
  color: var(--muted);
}

html[data-theme="light"] .metric .m-value { color: var(--teal); }
html[data-theme="light"] .metric .m-label { color: var(--muted); }

html[data-theme="light"] .gantt-block.idle {
  background: rgba(200,214,191,0.25);
}

html[data-theme="light"] .gantt-track {
  background: var(--surface2);
}

html[data-theme="light"] .tl { background: var(--surface); }
html[data-theme="light"] .axis-tick { color: var(--muted); }
html[data-theme="light"] .legend { background: var(--surface); }

html[data-theme="light"] tbody tr:nth-child(odd)  { background: var(--surface); }
html[data-theme="light"] tbody tr:nth-child(even) { background: var(--surface2); }

html[data-theme="light"] .math-block { background: var(--border); color: var(--dark); border-left-color: var(--teal); }
html[data-theme="light"] .math-num { border-bottom-color: var(--dark); }

/* ================================================================
   §15  SCROLLBAR
   ================================================================ */

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--teal-lt); }