/* ==========================================================================
   Diagnóstico de Primera Zona de Fresnel — hoja de estilos
   Adaptado del sistema de diseño de Contexto/diseno-referencia.html
   ("Modernist"): instrumento técnico, no landing page. Radios en 0,
   tipografía Archivo, un solo acento rojo industrial, cifras tabulares.
   ========================================================================== */

/* Fuente variable (peso 400-800 en un solo archivo), subconjunto "latin"
   (cubre español completo: á é í ó ú ñ ü ¿ ¡ están en Latin-1). Vendorizada
   en vendor/fonts — sin Google Fonts en producción. */
@font-face {
  font-family: "Archivo";
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url("vendor/fonts/archivo-latin.woff2") format("woff2");
}

:root {
  --color-bg: #f3f2f2;
  --color-surface: #eae9e9;
  --color-text: #201e1d;
  --color-accent: #ec3013;
  --color-divider: color-mix(in srgb, #201e1d 40%, transparent);

  --color-neutral-100: #f8f4f4;
  --color-neutral-300: #d7d3d3;
  --color-neutral-400: #bab6b6;
  --color-neutral-600: #7d7979;
  --color-neutral-700: #605d5d;

  --color-accent-100: #fff2ef;
  --color-accent-600: #dd2b0f;
  --color-accent-700: #ae1800;
  --color-accent-800: #7c1405;

  /* Estados del veredicto: la única paleta semántica de la interfaz (ver
     brief de diseño). No hay verde en este sistema — "viable" usa un
     azul-gris frío en vez de un verde ajeno a la paleta; "invasión" y
     "bloqueada" escalan en intensidad dentro de la misma familia roja. */
  --color-ok: #3d6470;
  --color-ok-bg: #e2ebee;
  --color-invasion: var(--color-accent);
  --color-invasion-bg: var(--color-accent-100);
  --color-bloqueada: var(--color-accent-800);
  --color-bloqueada-bg: #f6e4e0;

  --font-heading: "Archivo", system-ui, sans-serif;
  --font-heading-weight: 800;
  --font-body: "Archivo", system-ui, sans-serif;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;

  --radius-sm: 0px;
  --radius-md: 0px;

  --shadow-md: 0 3px 10px color-mix(in srgb, #2d2b2b 16%, transparent);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-2);
}
h3 {
  font-size: 20px;
}

input[type="number"],
input[type="text"] {
  font-variant-numeric: tabular-nums;
}

a {
  color: var(--color-accent);
}

:focus {
  outline: none;
}
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
::selection {
  background: color-mix(in srgb, var(--color-accent) 30%, transparent);
}

.hr {
  height: 2px;
  border: 0;
  margin: 0;
  background: var(--color-divider);
}

/* — botones — */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 13px;
  color: var(--color-text);
  background: transparent;
  border: 1px solid var(--color-divider);
  padding: 7px 14px;
  border-radius: var(--radius-md);
  white-space: nowrap;
}
.btn:hover {
  background: color-mix(in srgb, var(--color-text) 7%, transparent);
}
.btn:active {
  background: color-mix(in srgb, var(--color-text) 14%, transparent);
}
.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background: var(--color-accent-600);
}
.btn-primary:active {
  background: var(--color-accent-700);
}
.btn[aria-pressed="true"] {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

/* — campos — */
.field {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.field > label {
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  opacity: 0.55;
}
.input {
  width: 100%;
  min-height: 32px;
  padding: 4px 8px;
  font: inherit;
  font-size: 13px;
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-text);
  caret-color: var(--color-accent);
  background: var(--color-bg);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
}
.input:hover {
  border-color: color-mix(in srgb, var(--color-text) 45%, transparent);
}
.input:focus-visible {
  border-color: var(--color-accent);
  outline-offset: 0;
}
.input[aria-invalid="true"] {
  border-color: var(--color-accent);
  background: var(--color-accent-100);
}
/* Quita las flechas nativas de <input type=number>: en los campos angostos
   de coordenadas recortaban los dígitos. Los controles que sí necesitan
   incrementar/decrementar (altura de torre, frecuencia) siguen siendo
   editables a mano; no se pierde funcionalidad. */
.input::-webkit-outer-spin-button,
.input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.input[type="number"] {
  -moz-appearance: textfield;
}
.field-error {
  font-size: 11px;
  color: var(--color-accent-700);
  min-height: 14px;
}

.seg {
  display: inline-flex;
  overflow: hidden;
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
}
.seg-opt {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}
.seg-opt + .seg-opt {
  border-left: 1px solid var(--color-divider);
}
.seg-opt:has(input:checked) {
  background: var(--color-text);
  color: var(--color-bg);
}
.seg-opt:not(:has(input:checked)):hover {
  background: color-mix(in srgb, var(--color-text) 7%, transparent);
}
.seg-opt:has(input:focus-visible) {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
}
.seg-opt input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

/* — tabla de valores — */
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.table th {
  text-align: left;
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-text) 60%, transparent);
  padding: 6px 8px;
  border-bottom: 2px solid var(--color-divider);
}
.table td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--color-divider);
}
.table tbody tr:hover {
  background: color-mix(in srgb, var(--color-text) 4%, transparent);
}
.table td.num {
  text-align: right;
  font-family: var(--font-heading);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}
.table td.unit {
  font-size: 11px;
  opacity: 0.55;
  width: 44px;
}

/* — kicker (micro-etiqueta con punto de acento) — */
.kicker {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 12px;
}
.kicker::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  flex: none;
}

/* ==========================================================================
   Layout de la aplicación
   ========================================================================== */

.app {
  min-height: 100vh;
  background: var(--color-bg);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border-bottom: 2px solid var(--color-divider);
  flex-wrap: wrap;
}
.nav-brand {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 18px;
  margin-right: auto;
}
.nav-sub {
  font-size: 11.5px;
  opacity: 0.65;
}

.main {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4) var(--space-6);
  max-width: 1400px;
  margin: 0 auto;
}

.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
}

/* — panel de estado (carga / error / entradas inválidas) — */
.estado-banner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-left: 6px solid var(--color-neutral-600);
  background: var(--color-surface);
  font-size: 13.5px;
}
.estado-banner[data-tipo="carga"] {
  border-left-color: var(--color-neutral-600);
}
.estado-banner[data-tipo="error"] {
  border-left-color: var(--color-bloqueada);
  background: var(--color-bloqueada-bg);
}
.estado-banner strong {
  font-family: var(--font-heading);
}
.estado-banner .btn {
  margin-left: auto;
  flex: none;
}

/* — fila de entrada: sitios A/B + control de frecuencia — */
.fila-entrada {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: stretch;
}

.panel-sitios {
  flex: 2 1 380px;
  min-width: 280px;
  display: flex;
  flex-direction: column;
}
.sitio-row {
  display: flex;
}
.sitio-row + .sitio-row {
  border-top: 1px solid var(--color-divider);
}
.sitio-badge {
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 13px;
  color: #fff;
  background: var(--color-text);
  flex: none;
}
.sitio-row[data-sitio="A"] .sitio-badge {
  background: var(--color-accent);
}
.sitio-main {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: var(--space-2) var(--space-3);
  border-right: 1px solid var(--color-divider);
  min-width: 0;
}
.sitio-coords {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
.sitio-coords-label {
  font-size: 9px;
  font-weight: 800;
  opacity: 0.5;
  letter-spacing: 0.02em;
}
.sitio-coords-inputs {
  display: flex;
  gap: 4px;
}
.sitio-coords-inputs .input {
  width: 82px;
}
.sitio-altura {
  width: 76px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-2);
  gap: 3px;
  flex: none;
}
.altura-gauge {
  position: relative;
  width: 14px;
  height: 34px;
  background: var(--color-neutral-300);
  border: 1px solid var(--color-divider);
  flex: none;
}
.altura-gauge-fill {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-text);
}
.sitio-row[data-sitio="A"] .altura-gauge-fill {
  background: var(--color-accent);
}
.sitio-altura .input {
  width: 56px;
  padding: 2px 3px;
  text-align: center;
  font-size: 11px;
}

/* — control de frecuencia — */
.panel-frecuencia {
  flex: 3 1 460px;
  min-width: 300px;
  background: var(--color-surface);
  border: 2px solid var(--color-accent);
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.frecuencia-cabecera {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
}
.frecuencia-valor {
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.frecuencia-valor .valor {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 28px;
  font-variant-numeric: tabular-nums;
}
.frecuencia-valor .unidad {
  font-size: 14px;
  opacity: 0.6;
  margin-left: 2px;
}
.frecuencia-presets {
  display: flex;
  gap: 4px;
  align-items: center;
  flex-wrap: wrap;
}
.frecuencia-presets .field {
  width: 100px;
  margin-left: 4px;
}

.ruler {
  position: relative;
  height: 52px;
  background: var(--color-neutral-300);
  border: 1px solid var(--color-divider);
  cursor: pointer;
  touch-action: none;
  overflow: hidden;
}
.ruler-tick {
  position: absolute;
  top: 0;
  width: 1px;
  background: var(--color-divider);
}
.ruler-edge-label {
  position: absolute;
  bottom: 2px;
  font-size: 9px;
  opacity: 0.5;
}
.ruler-fader {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-accent);
  pointer-events: none;
}
.ruler-lens {
  position: absolute;
  top: -2px;
  width: 62px;
  height: 22px;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translateX(-50%);
  pointer-events: none;
}
@media (prefers-reduced-motion: no-preference) {
  .ruler-lens {
    transition: opacity 0.15s;
  }
}

/* — barra de casos demo — */
.demo-toolbar {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  flex-wrap: wrap;
}
.demo-toolbar-label {
  font-size: 11px;
  font-weight: 800;
  opacity: 0.55;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* — cuadrícula principal: gráfico + columna derecha — */
.grid-principal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: flex-start;
}
.col-grafico {
  flex: 5 1 640px;
  min-width: 320px;
}
.col-lateral {
  flex: 2 1 300px;
  min-width: 260px;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.panel-grafico {
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.panel-grafico-cabecera {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
}
#grafico {
  min-height: 460px;
}

/* — veredicto — */
.veredicto {
  border-left: 10px solid var(--color-neutral-600);
}
.veredicto-cabecera {
  padding: var(--space-4) var(--space-4) var(--space-3);
}
.veredicto-kicker {
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: 0.02em;
  margin-bottom: 6px;
}
.veredicto-titulo {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(22px, 3vw, 28px);
  line-height: 1.05;
}
.veredicto-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.veredicto-stat {
  padding: var(--space-3) var(--space-4);
  border-right: 1px solid var(--color-divider);
}
.veredicto-stat:last-child {
  border-right: none;
}
.veredicto-stat-label {
  font-size: 10px;
  font-weight: 800;
  opacity: 0.55;
  margin-bottom: 2px;
}
.veredicto-stat-valor {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 30px;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.veredicto-stat-valor .unidad {
  font-size: 15px;
  opacity: 0.6;
  margin-left: 2px;
}
.veredicto-explicacion {
  padding: var(--space-3) var(--space-4);
  font-size: 13.5px;
  line-height: 1.5;
}

/* — mapa — */
.panel-mapa {
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.mapa-cabecera {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}
#mapa {
  height: 260px;
  background: var(--color-bg);
  border: 1px solid var(--color-divider);
}
.mapa-caption {
  font-size: 11px;
  opacity: 0.6;
  font-variant-numeric: tabular-nums;
}

/* — panel de valores — */
.panel-valores {
  padding: var(--space-4);
}
.panel-valores h4 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 12px;
}

/* — avanzado — */
.avanzado {
  padding: 0;
}
.avanzado > summary {
  list-style: none;
  cursor: pointer;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.avanzado > summary::-webkit-details-marker {
  display: none;
}
.avanzado > summary::before {
  content: "▸";
  color: var(--color-accent);
  transition: transform 0.15s;
}
.avanzado[open] > summary::before {
  transform: rotate(90deg);
}
.avanzado-body {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  padding: 0 var(--space-4) var(--space-4);
}
.avanzado-body .field {
  width: 160px;
}

/* — pie de página — */
.footer {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 2px solid var(--color-divider);
}
.footer > div {
  padding: 10px 16px;
  border-right: 1px solid var(--color-divider);
}
.footer > div:last-child {
  border-right: none;
}
.footer-label {
  font-size: 9px;
  font-weight: 800;
  opacity: 0.5;
  margin-bottom: 2px;
}
.footer-valor {
  font-size: 11.5px;
  font-weight: 700;
}

/* ==========================================================================
   Responsive — hasta móvil. El gráfico de perfil es lo primero que debe
   verse: en pantallas angostas se reordena por encima de los controles de
   entrada, no solo se apila en el orden de escritorio.
   ========================================================================== */
@media (max-width: 860px) {
  .main {
    padding: var(--space-2) var(--space-2) var(--space-6);
  }
  .estado-banner {
    order: 0;
  }
  .demo-toolbar {
    order: 0;
  }
  .grid-principal {
    order: 1;
  }
  .fila-entrada {
    order: 2;
  }
  .avanzado {
    order: 3;
  }
  .footer {
    order: 4;
  }
  .col-grafico,
  .col-lateral {
    flex-basis: 100%;
  }
  .sitio-coords-inputs .input {
    width: 72px;
  }
  .footer {
    grid-template-columns: 1fr;
  }
  .footer > div {
    border-right: none;
    border-bottom: 1px solid var(--color-divider);
  }
  .footer > div:last-child {
    border-bottom: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}