@font-face{font-family:"Barlow Condensed";font-style:normal;font-weight:500;font-display:swap;src:url("fuentes/barlow-condensed-latin-500-normal.woff2") format("woff2")}
@font-face{font-family:"Barlow Condensed";font-style:normal;font-weight:700;font-display:swap;src:url("fuentes/barlow-condensed-latin-700-normal.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:400;font-display:swap;src:url("fuentes/ibm-plex-sans-latin-400-normal.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:500;font-display:swap;src:url("fuentes/ibm-plex-sans-latin-500-normal.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:600;font-display:swap;src:url("fuentes/ibm-plex-sans-latin-600-normal.woff2") format("woff2")}
/* Economizando: cabecera con marca y menú; tablero oscuro tipo estación de servicio; paneles claros debajo. */
:root{
  --bg:#eef1f4; --panel:#ffffff; --ink:#14212e; --muted:#566575; --line:#d3dae1;
  --board:#14212e; --board-ink:#f4f6f8; --accent:#f2a900;
  --down:#1a7f4b; --up:#b93a1e;
  --display:"Barlow Condensed","Arial Narrow",sans-serif;
  --body:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
}
/* Oscuro: por preferencia del dispositivo, salvo que el visitante elija otra cosa en Accesibilidad. */
@media (prefers-color-scheme: dark){
  :root:not(.tema-claro):not(.tema-contraste){
    --bg:#0e161e; --panel:#17222d; --ink:#e8edf2; --muted:#9aa8b6; --line:#2b3947;
    --board:#060b10; --accent:#ffbf1f; --down:#4cc38a; --up:#ff8a6b;
    color-scheme:dark;
  }
}
:root.tema-oscuro{
    --bg:#0e161e; --panel:#17222d; --ink:#e8edf2; --muted:#9aa8b6; --line:#2b3947;
    --board:#060b10; --accent:#ffbf1f; --down:#4cc38a; --up:#ff8a6b;
    color-scheme:dark;
}
:root.tema-claro{color-scheme:light}
/* Alto contraste: negro, blanco y amarillo; supera 7:1 en todos los textos. */
:root.tema-contraste{
  --bg:#000; --panel:#000; --ink:#fff; --muted:#fff; --line:#fff;
  --board:#000; --board-ink:#fff; --accent:#ffe100; --down:#7dffb4; --up:#ffb3a8;
  color-scheme:dark;
}
:root.tema-contraste .board,:root.tema-contraste .panel{border:2px solid #fff}
:root.tema-contraste .chg.down{color:#7dffb4}:root.tema-contraste .chg.up{color:#ffb3a8}
:root.tema-contraste input,:root.tema-contraste select{border:2px solid #fff}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:1rem;line-height:1.5}
.wrap{max-width:980px;margin:0 auto;padding:24px 16px 48px;display:flex;flex-direction:column;gap:20px}
h1{font-family:var(--display);font-weight:700;font-size:2.1rem;line-height:1.05;margin:0;text-wrap:balance}
h2{font-family:var(--display);font-weight:700;font-size:1.45rem;margin:0 0 12px;text-wrap:balance}
.board{background:var(--board);color:var(--board-ink);border-radius:10px;padding:20px;display:flex;flex-direction:column;gap:16px}
.board-top{display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;align-items:center;font-size:.92rem}
.board-top strong{color:var(--accent);font-weight:600}
.board select{background:transparent;color:var(--board-ink);border:1px solid rgba(255,255,255,.65);width:auto}
.board select option{color:#14212e}
.prices{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.price{border-top:3px solid var(--accent);padding-top:10px;display:flex;flex-direction:column;gap:2px}
.price .name{font-size:.9rem;opacity:.85}
.price .num{font-family:var(--display);font-weight:700;font-size:3.2rem;line-height:1;font-variant-numeric:tabular-nums}
.price .num small{font-size:1.1rem;font-weight:500;opacity:.8}
.price .gal{font-size:.88rem;opacity:.8;font-variant-numeric:tabular-nums}
.chg{font-size:.9rem;font-weight:600;font-variant-numeric:tabular-nums}
.chg.down{color:#5fd39a}.chg.up{color:#ff9a7d}.chg.same{opacity:.75}
.alert{background:var(--panel);border:1px solid var(--up);border-left-width:5px;border-radius:8px;padding:12px 16px}
.cols{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:20px}
.form{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px}
label{display:flex;flex-direction:column;gap:4px;font-size:.85rem;color:var(--muted);font-weight:500}
input,select{font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:8px 10px;width:100%}
input:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:1px}
.results{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.res{display:flex;justify-content:space-between;gap:12px;align-items:baseline;border-top:1px solid var(--line);padding-top:10px}
.res b{font-family:var(--display);font-size:1.7rem;font-variant-numeric:tabular-nums}
.res .d{font-size:.9rem;font-weight:600}
.d.down{color:var(--down)}.d.up{color:var(--up)}
.chart{overflow-x:auto}
.chart svg{display:block;width:100%;height:auto;min-width:320px}
.chart svg text{font-family:var(--body);font-size:11px;fill:var(--muted)}
.chart svg .val{fill:var(--ink);font-weight:600}
.note{font-size:.85rem;color:var(--muted);margin:10px 0 0;max-width:65ch}
[hidden]{display:none!important}
.prices.dos{grid-template-columns:repeat(2,1fr)}
.titulo-tablero{margin:0;color:var(--board-ink);font-size:1.25rem}
.destaque{margin:0;font-size:1.05rem}
.destaque strong{color:var(--accent)}
@media (max-width:720px){.cols{grid-template-columns:1fr}.price .num{font-size:2.3rem}}
@media (max-width:420px){.prices{grid-template-columns:1fr}.form{grid-template-columns:1fr}}
.en-linea{flex-direction:row;align-items:center;gap:8px;color:inherit}
.uso{border:1px solid var(--line);border-radius:8px;margin:14px 0 0;padding:10px 12px;display:flex;flex-direction:column;gap:8px}
.uso legend{font-size:.85rem;color:var(--muted);font-weight:500;padding:0 6px}
.opcion{display:flex;flex-direction:row;flex-wrap:wrap;align-items:center;gap:8px;font-size:.95rem;color:var(--ink)}
.opcion input[type=radio]{width:auto;accent-color:var(--accent)}
.opcion input[type=number]{width:5.5em}
.res b small{font-family:var(--body);font-size:.85rem;font-weight:500;color:var(--muted)}
main{display:flex;flex-direction:column;gap:20px}
.opcion label{flex-direction:row;font-size:inherit;color:inherit;font-weight:400}
.opcion input[type=radio]{width:1.15rem;height:1.15rem;flex:none}
input[type=radio]:focus-visible,summary:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.tabla-historial{margin-top:12px;font-size:.9rem}
.mas{margin-top:18px;border-top:1px solid var(--line);padding-top:6px}
.mas[open]>.form{margin-top:8px}
.mas summary,.tabla-historial summary{cursor:pointer;color:var(--muted);font-weight:500;padding:6px 0}
table{border-collapse:collapse;width:100%;margin-top:8px;font-variant-numeric:tabular-nums}
caption{text-align:left;color:var(--muted);padding-bottom:6px}
th,td{text-align:left;padding:6px 10px 6px 0;border-bottom:1px solid var(--line)}
td:last-child,th:last-child{text-align:right;padding-right:0}
/* Espacio reservado para lo que se dibuja al cargar los datos, para que la página no salte. */
#grafica{aspect-ratio:440/260;min-width:0}
#notaGrafica{min-height:2.6em}
.board-top>span{min-height:1.5em}
.acciones{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;margin:0}
.acciones .note{margin:0}
.boton{display:inline-block;background:var(--accent);color:#14212e;font-weight:600;text-decoration:none;border-radius:8px;padding:10px 16px}
.boton:hover{filter:brightness(1.08)}
.boton:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
/* Tamaño de letra elegido en Accesibilidad. Todo el sitio está en rem, así que escala junto. */
html.letra-1{font-size:112.5%}
html.letra-2{font-size:125%}
html.letra-3{font-size:150%}
/* Espaciado de lectura (valores de la pauta WCAG 1.4.12). */
html.espaciado body{line-height:1.8;letter-spacing:.06em;word-spacing:.16em}
html.espaciado p,html.espaciado .note{margin-bottom:1em}
/* Enlaces y botones bien marcados. */
html.enlaces-resaltados a{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px}
html.enlaces-resaltados .boton,html.enlaces-resaltados button,html.enlaces-resaltados summary{outline:2px solid var(--ink);outline-offset:2px}
/* Enlace para saltar directo al contenido con el teclado. */
.saltar{position:absolute;left:12px;top:-60px;background:var(--accent);color:#14212e;font-weight:600;padding:8px 14px;border-radius:6px;z-index:10}
.saltar:focus{top:12px}
main:focus{outline:none}
/* Botón y panel de Accesibilidad. */
.a11y{position:relative}
.a11y summary{list-style:none;cursor:pointer;display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-weight:600;font-size:.9rem;background:var(--panel);color:var(--ink)}
.a11y summary::-webkit-details-marker{display:none}
.a11y summary span{font-family:var(--display);font-weight:700}
.a11y summary:focus-visible,.a11y-panel input:focus-visible,.a11y-panel button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.a11y-panel{position:absolute;right:0;top:calc(100% + 8px);z-index:5;width:min(330px,calc(100vw - 32px));background:var(--panel);color:var(--ink);border:1px solid var(--line);border-radius:10px;padding:14px 16px;box-shadow:0 10px 30px rgba(0,0,0,.25);display:flex;flex-direction:column;gap:12px}
.a11y-panel fieldset{border:0;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.a11y-panel legend{font-family:var(--display);font-weight:700;font-size:1.05rem;margin-bottom:4px;padding:0}
.a11y-panel label{flex-direction:row;align-items:center;gap:8px;font-size:.95rem;color:var(--ink);font-weight:400}
.a11y-panel input{width:1.1rem;height:1.1rem;accent-color:var(--accent);flex:none}
.a11y-pie{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.a11y-pie button{font:inherit;font-weight:600;cursor:pointer;background:transparent;color:var(--ink);border:1px solid var(--line);border-radius:6px;padding:6px 12px}
#a11y-estado{font-size:.85rem;color:var(--muted)}
.a11y-panel .note{margin:0}
@media (max-width:520px){.a11y-panel{position:fixed;left:16px;right:16px;top:auto;width:auto;bottom:16px;max-height:80vh;overflow:auto}}
/* ---------- Cabecera y marca ---------- */
a{color:var(--ink);text-underline-offset:3px}
.cabecera{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.marca{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-family:var(--display);font-weight:700;font-size:1.35rem;letter-spacing:.03em;text-transform:uppercase}
.logo{width:2rem;height:2rem;flex:none;display:block}
.menu{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.menu a{text-decoration:none;font-weight:600;padding:6px 12px;border-radius:999px;color:var(--ink)}
.menu a:hover{background:var(--panel)}
.menu a[aria-current="page"]{background:var(--ink);color:var(--bg)}
.a11y summary svg{width:1.15rem;height:1.15rem;flex:none}
.a11y summary span{font-family:var(--body);font-weight:600}
@media (max-width:620px){.menu{margin-left:0;order:3;width:100%}.a11y{margin-left:auto}}
/* ---------- Portada ---------- */
.portada{padding:12px 0 4px;display:flex;flex-direction:column;gap:10px}
.antetitulo{margin:0;font-size:.8rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.portada h1{font-size:clamp(2.2rem,5vw,3.4rem);max-width:18ch}
.bajada{margin:0;color:var(--muted);font-size:1.08rem;max-width:60ch}
.resumen h2{margin:0;color:var(--board-ink);font-size:1.25rem}
.resumen .boton{margin-left:auto}
.tarjetas{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.tarjeta{display:flex;flex-direction:column;gap:6px;background:var(--panel);border:1px solid var(--line);border-left:5px solid var(--accent);border-radius:10px;padding:18px 20px;text-decoration:none;color:var(--ink)}
.tarjeta h2{margin:0}
.tarjeta p{margin:0;color:var(--muted)}
a.tarjeta:hover{border-color:var(--accent)}
.tarjeta.proxima{border-left-color:var(--line)}
.tarjeta-etiqueta{font-size:.75rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.pasos{margin:0;padding-left:1.3rem;display:flex;flex-direction:column;gap:8px;max-width:70ch}
/* ---------- Páginas de texto ---------- */
.encabezado-pagina{display:flex;flex-direction:column;gap:8px}
.texto{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:28px clamp(18px,4vw,40px);max-width:760px}
.texto h1{margin-bottom:10px}
.texto h2{margin:26px 0 8px;font-size:1.3rem}
.texto p,.texto li{max-width:68ch}
.texto ul{padding-left:1.3rem}
.correo-grande{font-family:var(--display);font-size:clamp(1.4rem,4vw,2rem);font-weight:700;word-break:break-word}
.no-encontrada .acciones{margin-top:18px}
.fuente-datos{font-size:.85rem;color:var(--muted);margin:0;max-width:80ch}
/* ---------- Calculadora ---------- */
.modos{display:inline-flex;background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:3px;margin-bottom:14px}
.modo{font:inherit;font-weight:600;font-size:.92rem;border:0;border-radius:999px;padding:7px 14px;background:transparent;color:var(--ink);cursor:pointer}
.modo[aria-pressed="true"]{background:var(--ink);color:var(--bg)}
.modo:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.calc .form+.form{margin-top:12px}
.calc .ancho{grid-column:1/-1;margin:0}
.calc .ancho a{color:inherit}
select:disabled{opacity:.7}
.periodos{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:18px}
.periodo{display:flex;flex-direction:column;gap:2px;border:1px solid var(--line);border-radius:8px;padding:10px 12px;min-width:0}
.periodo span{font-size:.8rem;color:var(--muted);font-weight:600}
.periodo b{font-family:var(--display);font-size:1.6rem;line-height:1.1;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
.periodo small{font-size:.78rem;color:var(--muted);font-variant-numeric:tabular-nums}
.periodo.destacado{background:var(--board);border-color:var(--board);color:var(--board-ink)}
.periodo.destacado span,.periodo.destacado small{color:var(--board-ink);opacity:.85}
.periodo.destacado b{color:var(--accent)}
@media (max-width:420px){.periodos{grid-template-columns:1fr}.periodo{flex-direction:row;flex-wrap:wrap;align-items:baseline;justify-content:space-between}}
/* ---------- Pie ---------- */
.pie{margin-top:12px;padding-top:20px;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr auto;gap:14px 24px;font-size:.88rem;color:var(--muted)}
.pie-marca p{margin:6px 0 0;max-width:42ch}
.pie .marca{font-size:1.1rem}
.pie .logo{width:1.6rem;height:1.6rem}
.pie-enlaces{display:flex;flex-wrap:wrap;gap:6px 16px;align-content:flex-start}
.pie-enlaces a{color:var(--ink);font-weight:500}
.pie-legal{grid-column:1/-1;margin:0}
.pie-legal a{color:inherit}
@media (max-width:620px){.pie{grid-template-columns:1fr}}
/* Filas de resultados: la etiqueta se ajusta y la cifra nunca se parte. */
.res{flex-wrap:wrap}
.res>span:first-child{flex:1 1 11rem}
.res>span:last-child{white-space:nowrap;text-align:right;margin-left:auto}
.res .d{white-space:normal}
@media (max-width:420px){.prices.dos{grid-template-columns:1fr}}
td:not(:first-child){white-space:nowrap}