:root{
    --ink:#0c1420;
    --ink-2:#121e30;
    --panel:#16233a;
    --panel-line:#26374f;
    --paper:#eef1f0;
    --paper-dim:#a8b3bf;
    --amber:#ffb020;
    --amber-dim:#7a5a1e;
    --teal:#2dd4bf;
    --teal-dim:#1c5c54;
    --red-needle:#ff5c5c;
  }
  *{box-sizing:border-box; margin:0; padding:0;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--ink);
    color:var(--paper);
    font-family:'Inter',sans-serif;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  .mono{font-family:'JetBrains Mono',monospace;}
  .display{font-family:'Oswald',sans-serif; text-transform:uppercase;}

  /* subtle texture: brushed panel + rivets */
  body::before{
    content:"";
    position:fixed; inset:0;
    background-image:
      radial-gradient(circle at 1px 1px, rgba(255,255,255,0.035) 1px, transparent 0);
    background-size: 3px 3px;
    pointer-events:none;
    z-index:0;
  }

  header{
    position:sticky; top:0; z-index:50;
    display:flex; align-items:center; justify-content:space-between;
    padding:18px 6vw;
    background:rgba(12,20,32,0.85);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--panel-line);
  }
  .logo{
    display:flex; align-items:center; gap:10px;
    font-family:'Oswald'; font-weight:600; letter-spacing:0.06em; font-size:1.15rem;
  }
  .logo .dot{width:9px; height:9px; border-radius:50%; background:var(--amber); box-shadow:0 0 10px var(--amber);}
  nav{display:flex; gap:28px;}
  nav a{
    color:var(--paper-dim); text-decoration:none; font-size:0.85rem; letter-spacing:0.03em;
    display:flex; align-items:center; gap:6px;
    transition:color .2s;
  }
  nav a:hover{color:var(--paper);}
  nav a .led{width:6px;height:6px;border-radius:50%;background:var(--panel-line);}

  main{position:relative; z-index:1;}

  /* ---------------- HERO ---------------- */
  .hero{
    padding:9vh 6vw 8vh;
    display:grid; grid-template-columns:1.15fr 0.85fr; gap:6vw; align-items:center;
    border-bottom:1px solid var(--panel-line);
  }
  .eyebrow{
    font-family:'JetBrains Mono'; font-size:0.72rem; letter-spacing:0.18em;
    color:var(--teal); text-transform:uppercase; margin-bottom:18px;
    display:flex; align-items:center; gap:10px;
  }
  .eyebrow::before{content:"●"; font-size:0.6rem; animation:blink 1.6s infinite;}
  @keyframes blink{0%,100%{opacity:1;}50%{opacity:0.25;}}

  h1{
    font-family:'Oswald'; font-weight:700; text-transform:none;
    font-size:clamp(2.2rem, 4.6vw, 3.8rem);
    line-height:1.05;
    letter-spacing:-0.01em;
  }
  h1 em{font-style:normal; color:var(--amber);}
  .hero p.sub{
    margin-top:22px; font-size:1.05rem; color:var(--paper-dim); max-width:46ch; line-height:1.6;
  }
  .hero-cta{margin-top:34px; display:flex; gap:14px; flex-wrap:wrap;}
  .btn{
    font-family:'Inter'; font-weight:600; font-size:0.92rem;
    padding:13px 24px; border-radius:3px; text-decoration:none;
    display:inline-flex; align-items:center; gap:8px;
    transition:transform .15s, box-shadow .15s;
  }
  .btn-primary{background:var(--amber); color:#1a1206; box-shadow:0 0 0 1px rgba(255,176,32,0.4);}
  .btn-primary:hover{transform:translateY(-2px); box-shadow:0 6px 18px rgba(255,176,32,0.25);}
  .btn-ghost{border:1px solid var(--panel-line); color:var(--paper);}
  .btn-ghost:hover{border-color:var(--teal); color:var(--teal);}

  /* ticker readout in hero */
  .readout{
    background:var(--panel);
    border:1px solid var(--panel-line);
    border-radius:6px;
    padding:24px;
    position:relative;
  }
  .readout::after{
    content:"AHORRO ESTIMADO / MES"; position:absolute; top:-10px; left:18px;
    background:var(--ink); padding:0 8px; font-family:'JetBrains Mono'; font-size:0.62rem;
    letter-spacing:0.14em; color:var(--paper-dim);
  }
  .readout-row{display:flex; justify-content:space-between; align-items:baseline; padding:10px 0; border-bottom:1px dashed var(--panel-line);}
  .readout-row:last-child{border-bottom:none;}
  .readout-label{font-size:0.82rem; color:var(--paper-dim);}
  .readout-value{font-family:'JetBrains Mono'; font-size:1.15rem; color:var(--teal); font-weight:700;}
  .readout-total{
    margin-top:14px; padding-top:16px; border-top:1px solid var(--panel-line);
    display:flex; justify-content:space-between; align-items:center;
  }
  .readout-total .n{font-family:'JetBrains Mono'; font-size:2.1rem; color:var(--amber); font-weight:700;}

  /* ---------------- CARDS ---------------- */
  .section-head{padding:7vh 6vw 2vh;}
  .section-head .eyebrow{color:var(--amber);}
  .section-head h2{font-family:'Oswald'; font-size:clamp(1.6rem,2.6vw,2.1rem); font-weight:600;}
  .section-head p{color:var(--paper-dim); margin-top:10px; max-width:60ch;}

  .grid{
    display:grid; grid-template-columns:repeat(auto-fit, minmax(230px,1fr)); gap:22px;
    padding:2vh 6vw 8vh;
  }
  .card{
    background:var(--panel); border:1px solid var(--panel-line); border-radius:8px;
    padding:26px; display:flex; flex-direction:column; gap:18px;
    position:relative; overflow:hidden;
    transition:border-color .2s, transform .2s;
  }
  .card:hover{border-color:var(--card-accent, var(--amber)); transform:translateY(-3px);}
  .card-top{display:flex; justify-content:space-between; align-items:flex-start;}
  .card-tag{
    font-family:'JetBrains Mono'; font-size:0.66rem; letter-spacing:0.12em;
    color:var(--paper-dim); border:1px solid var(--panel-line); border-radius:20px;
    padding:4px 10px;
  }
  .card-status{font-family:'JetBrains Mono'; font-size:0.66rem; color:var(--teal);}
  .card h3{font-family:'Oswald'; font-size:1.5rem; font-weight:600; margin-top:4px;}
  .card p.desc{color:var(--paper-dim); font-size:0.9rem; line-height:1.55;}
  .card ul{list-style:none; display:flex; flex-direction:column; gap:7px; margin-top:2px;}
  .card ul li{font-size:0.83rem; color:var(--paper); display:flex; gap:8px; align-items:flex-start;}
  .card ul li::before{content:"▸"; color:var(--card-accent,var(--amber)); flex-shrink:0;}
  .card-footer{margin-top:auto; display:flex; align-items:center; justify-content:space-between; padding-top:8px;}
  .card-link{font-family:'JetBrains Mono'; font-size:0.78rem; color:var(--card-accent,var(--amber)); text-decoration:none;}
  .card-link:hover{text-decoration:underline;}

  /* La tarjeta entera es clicable, no solo el enlace de abajo: se levanta al pasar el
     raton, asi que parecerlo y no serlo despistaba.

     Se hace estirando el propio enlace con un pseudoelemento que cubre la tarjeta, en
     lugar de poner un onclick en el <article> o de envolverlo todo en otra <a>. Asi
     sigue habiendo UN solo enlace con su texto: el lector de pantalla lo anuncia igual,
     el buscador lo rastrea igual, y funciona el clic con el boton central y el
     "abrir en otra pestana". Cada tarjeta tiene un unico enlace, asi que la capa no
     tapa nada; si algun dia se anade otro dentro, habra que darle position:relative y
     z-index:2 para que quede por encima.

     A cambio, el texto de la tarjeta deja de poder seleccionarse con el raton. Es el
     precio conocido de este patron y aqui compensa: son tarjetas para entrar, no para
     copiar de ellas. */
  .card{cursor:pointer;}
  .card-link::after{content:""; position:absolute; inset:0; z-index:1;}
  .card:hover .card-link{text-decoration:underline;}

  /* Con el teclado, el borde de la tarjeta acompana al foco del enlace. */
  .card:focus-within{border-color:var(--card-accent,var(--amber)); transform:translateY(-3px);}
  .card-link:focus-visible{outline:2px solid var(--card-accent,var(--amber)); outline-offset:3px;}

  /* gauge widget */
  .gauge-wrap{display:flex; align-items:center; justify-content:center; padding:6px 0;}
  .gauge{width:100%; max-width:220px;}
  .needle{transform-origin:100px 100px; transition:transform 1.4s cubic-bezier(.2,1,.3,1);}

  .card-cripto{--card-accent:var(--teal);}
  .card-gasolina{--card-accent:var(--amber);}
  .card-viaje{--card-accent:#fb923c;}
  .card-electrico{--card-accent:#8b7cff;}
  .card-caravana{--card-accent:#a3e635;}
  .card-hogar{--card-accent:#ff8fb1;}
  .card-divisas{--card-accent:#4ade80;}
  .card-calorias{--card-accent:#f59e0b;}
  .card-imc{--card-accent:#38bdf8;}
  .card-nomina{--card-accent:#eab308;}
  .card-hipoteca{--card-accent:#fb7185;}
  .card-finiquito{--card-accent:#f97316;}
  .card-embarazo{--card-accent:#f472b6;}
  .card-fechas{--card-accent:#a78bfa;}
  .card-propinas{--card-accent:#34d399;}
  .card-unidades{--card-accent:#34d399;}

  /* ---------------- HOW IT WORKS ---------------- */
  .steps{
    padding:8vh 6vw; border-top:1px solid var(--panel-line);
    display:grid; grid-template-columns:repeat(3,1fr); gap:36px;
  }
  .step .num{font-family:'JetBrains Mono'; color:var(--panel-line); font-size:2.6rem; font-weight:700; line-height:1;}
  .step h4{font-family:'Oswald'; font-size:1.1rem; margin:10px 0 8px; text-transform:none; font-weight:600;}
  .step p{color:var(--paper-dim); font-size:0.88rem; line-height:1.6;}

  footer{
    padding:5vh 6vw; border-top:1px solid var(--panel-line);
    display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:14px;
  }
  footer .fnote{font-size:0.78rem; color:var(--paper-dim); max-width:50ch;}
  footer .flogo{font-family:'Oswald'; letter-spacing:0.06em; font-weight:600;}

  @media (max-width:880px){
    .hero{grid-template-columns:1fr;}
    .grid{grid-template-columns:1fr;}
    .steps{grid-template-columns:1fr;}
    nav{display:none;}
  }

  @media (prefers-reduced-motion: reduce){
    .needle, .eyebrow::before{animation:none !important; transition:none !important;}
  }

  /* ===== PÁGINAS DE CALCULADORA ===== */
  .calc-head{padding:7vh 6vw 3vh;}
  .calc-head h1{font-size:clamp(1.9rem,3.6vw,3rem);}
  .calc-head p.sub{margin-top:18px; color:var(--paper-dim); max-width:60ch; line-height:1.6;}
  .crumbs{font-family:'JetBrains Mono'; font-size:0.72rem; letter-spacing:0.1em; margin-bottom:16px;}
  .crumbs a{color:var(--paper-dim); text-decoration:none;}
  .crumbs a:hover{color:var(--accent,var(--amber));}
  .crumbs span{color:var(--panel-line); margin:0 8px;}
  .calc{display:grid; grid-template-columns:1fr 0.85fr; gap:28px; padding:2vh 6vw 6vh; align-items:start;}
  .pane{background:var(--panel); border:1px solid var(--panel-line); border-radius:8px; padding:26px;}
  .pane + .pane{margin-top:22px;}
  .pane h2, .pane h3{font-family:'Oswald'; font-weight:600; text-transform:none;}
  .pane h2{font-size:1.25rem; margin-bottom:4px;}
  .pane h3{font-size:1.05rem; margin-bottom:4px;}
  .pane .hint{font-size:0.8rem; color:var(--paper-dim); line-height:1.5; margin-bottom:18px;}
  .fields{display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:16px;}
  .fields.one{grid-template-columns:1fr;}
  .field{display:flex; flex-direction:column; gap:6px;}
  .field label{font-family:'JetBrains Mono'; font-size:0.66rem; letter-spacing:0.12em; text-transform:uppercase; color:var(--paper-dim);}
  .field .note{font-size:0.72rem; color:var(--paper-dim); line-height:1.4;}
  /* Marca al lado de la etiqueta de un campo que la calculadora rellena con una
     estimación: el importe viene puesto, pero es orientativo y se puede corregir.
     Sale de la caja en versalitas de la etiqueta para que se lea tal cual. */
  .field label .orientativo, .tbl .orientativo{text-transform:none; letter-spacing:0; font-size:0.68rem;
    color:var(--accent,var(--amber)); opacity:.85; margin-left:6px;}
  .tbl .orientativo{font-family:'JetBrains Mono';}
  input[type=number], input[type=text], input[type=date], select{
    width:100%; background:var(--ink-2); color:var(--paper);
    border:1px solid var(--panel-line); border-radius:4px;
    padding:11px 12px; font-family:'JetBrains Mono'; font-size:0.95rem; appearance:none;}
  input:focus, select:focus{outline:none; border-color:var(--accent,var(--amber)); box-shadow:0 0 0 2px rgba(255,176,32,0.12);}
  input[type=number]{-moz-appearance:textfield;}
  input[type=number]::-webkit-outer-spin-button, input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none; margin:0;}
  select{padding-right:34px;}
  .switch{display:flex; gap:8px; flex-wrap:wrap; margin-bottom:18px;}
  .switch button{font-family:'JetBrains Mono'; font-size:0.72rem; letter-spacing:0.08em;
    background:var(--ink-2); color:var(--paper-dim); cursor:pointer;
    border:1px solid var(--panel-line); border-radius:20px; padding:7px 14px;
    transition:color .15s, border-color .15s;}
  .switch button[aria-pressed="true"]{color:var(--accent,var(--amber)); border-color:var(--accent,var(--amber));}
  /* un enlace dentro de .switch se ve como los botones de al lado. Se usa cuando la
     acción lleva a otra página (el puente de /gasolina/ a /viaje/): tiene que ser un
     <a href> de verdad para que se pueda copiar, abrir en otra pestaña y rastrear. */
  .switch a{font-family:'JetBrains Mono'; font-size:0.72rem; letter-spacing:0.08em;
    background:var(--ink-2); color:var(--paper-dim); text-decoration:none;
    border:1px solid var(--panel-line); border-radius:20px; padding:7px 14px;
    transition:color .15s, border-color .15s;}
  .switch a:hover{color:var(--accent,var(--amber)); border-color:var(--accent,var(--amber));}
  fieldset{border:1px dashed var(--panel-line); border-radius:6px; padding:16px; margin-top:18px;}
  legend{font-family:'JetBrains Mono'; font-size:0.66rem; letter-spacing:0.12em; text-transform:uppercase; color:var(--paper-dim); padding:0 8px;}
  .result{background:var(--ink-2); border:1px solid var(--panel-line); border-radius:8px; padding:26px; position:sticky; top:88px;}
  .result .big{font-family:'JetBrains Mono'; font-weight:700; color:var(--accent,var(--amber));
    font-size:clamp(1.9rem,4.2vw,2.8rem); line-height:1.05; word-break:break-word;}
  .result .big.neg{color:var(--red-needle);}
  .result .big-label{font-family:'JetBrains Mono'; font-size:0.66rem; letter-spacing:0.14em; text-transform:uppercase; color:var(--paper-dim); margin-bottom:8px;}
  .result .verdict{margin-top:14px; font-size:0.88rem; line-height:1.55; color:var(--paper); border-left:2px solid var(--accent,var(--amber)); padding-left:12px;}
  .rows{margin-top:20px; border-top:1px solid var(--panel-line);}
  .row{display:flex; justify-content:space-between; align-items:baseline; gap:14px; padding:11px 0; border-bottom:1px dashed var(--panel-line);}
  .row:last-child{border-bottom:none;}
  .row .k{font-size:0.83rem; color:var(--paper-dim);}
  .row .v{font-family:'JetBrains Mono'; font-size:0.95rem; font-weight:500; white-space:nowrap;}
  .row.total{border-top:1px solid var(--panel-line); border-bottom:none; margin-top:6px; padding-top:14px;}
  .row.total .k{color:var(--paper); font-weight:600;}
  .row.total .v{color:var(--teal); font-size:1.15rem; font-weight:700;}
  .v.good{color:var(--teal);} .v.bad{color:var(--red-needle);} .v.warn{color:var(--amber);}
  .bar{height:8px; background:var(--panel-line); border-radius:6px; overflow:hidden; margin-top:8px;}
  .bar > i{display:block; height:100%; background:var(--accent,var(--amber)); width:0; transition:width .5s cubic-bezier(.2,1,.3,1);}
  table.tbl{width:100%; border-collapse:collapse; margin-top:14px; font-size:0.83rem;}
  table.tbl th, table.tbl td{padding:9px 10px; text-align:right; border-bottom:1px solid var(--panel-line);}
  table.tbl th:first-child, table.tbl td:first-child{text-align:left;}
  table.tbl th{font-family:'JetBrains Mono'; font-size:0.66rem; letter-spacing:0.1em; text-transform:uppercase; color:var(--paper-dim); font-weight:500;}
  table.tbl td{font-family:'JetBrains Mono';}
  table.tbl tr.best td{color:var(--teal);}
  .tbl-wrap{overflow-x:auto;}
  .prose{padding:2vh 6vw 8vh; max-width:78ch;}
  .prose h2{font-family:'Oswald'; font-size:1.5rem; font-weight:600; margin:36px 0 12px;}
  .prose h3{font-family:'Oswald'; font-size:1.12rem; font-weight:600; margin:26px 0 8px;}
  .prose p{color:var(--paper-dim); line-height:1.7; margin-bottom:14px; font-size:0.95rem;}
  .prose ul, .prose ol{color:var(--paper-dim); line-height:1.7; margin:0 0 16px 20px; font-size:0.95rem;}
  .prose li{margin-bottom:6px;}
  .prose strong{color:var(--paper); font-weight:600;}
  .prose a{color:var(--accent,var(--amber));}
  details.faq{border-bottom:1px solid var(--panel-line); padding:14px 0;}
  details.faq summary{cursor:pointer; font-family:'Oswald'; font-size:1.02rem; font-weight:500; list-style:none; display:flex; justify-content:space-between; gap:14px;}
  details.faq summary::-webkit-details-marker{display:none;}
  details.faq summary::after{content:"+"; color:var(--accent,var(--amber)); font-family:'JetBrains Mono';}
  details.faq[open] summary::after{content:"-";}
  details.faq p{margin-top:10px; margin-bottom:0;}
  .disclaimer{margin-top:18px; font-size:0.76rem; color:var(--paper-dim); line-height:1.55; border:1px dashed var(--panel-line); border-radius:6px; padding:12px 14px;}
  .mapa-lienzo{position:relative; width:100%; height:min(52vh,420px); margin-top:16px;
    border:1px solid var(--panel-line); border-radius:6px; overflow:hidden;
    background:var(--ink-2); cursor:grab; touch-action:none;}
  .mapa-lienzo.mapa-agarrado{cursor:grabbing;}
  .mapa-lienzo.mapa-sin-fondo{background:
    repeating-linear-gradient(45deg, var(--ink-2) 0 12px, var(--ink) 12px 24px);}
  .mapa-teselas{position:absolute; inset:0;}
  .mapa-teselas img{position:absolute; width:256px; height:256px; user-select:none; pointer-events:none;}
  .mapa-trazo{position:absolute; inset:0; pointer-events:none;}
  .mapa-mandos{position:absolute; top:10px; right:10px; display:flex; flex-direction:column; gap:6px;}
  .mapa-mandos button{font-family:'JetBrains Mono'; font-size:0.78rem; cursor:pointer;
    background:rgba(12,20,32,0.85); color:var(--paper); border:1px solid var(--panel-line);
    border-radius:4px; padding:5px 9px; backdrop-filter:blur(4px);}
  .mapa-mandos button:hover{border-color:var(--accent,var(--amber)); color:var(--accent,var(--amber));}
  .mapa-aviso{margin-top:8px; font-size:0.72rem; color:var(--paper-dim); line-height:1.45;}
  .mapa-clave{display:flex; flex-wrap:wrap; gap:14px; margin-top:10px; font-size:0.74rem; color:var(--paper-dim);}
  .mapa-clave span{display:flex; align-items:center; gap:7px;}
  .mapa-clave i{width:14px; height:3px; border-radius:2px; display:inline-block;}
  .compartir{margin-top:20px; margin-bottom:0;}
  .compartir-aviso{margin-top:10px; font-size:0.74rem; color:var(--paper-dim); line-height:1.45;}
  .more{padding:0 6vw 8vh;}
  .more h2{font-family:'Oswald'; font-size:1.35rem; font-weight:600; margin-bottom:18px;}
  .atajos{padding:0 6vw 6vh; display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:26px 34px;}
  .atajos h3{font-family:'JetBrains Mono'; font-size:0.68rem; letter-spacing:0.14em;
    text-transform:uppercase; color:var(--paper-dim); margin-bottom:12px;}
  .chips{display:flex; flex-wrap:wrap; gap:10px;}
  .chips a{font-family:'JetBrains Mono'; font-size:0.78rem; text-decoration:none;
    color:var(--paper-dim); background:var(--panel); border:1px solid var(--panel-line);
    border-radius:20px; padding:8px 14px; transition:color .15s, border-color .15s;}
  .chips a:hover{color:var(--accent,var(--amber)); border-color:var(--accent,var(--amber));}
  .backlink{font-family:'JetBrains Mono'; font-size:0.78rem; color:var(--paper-dim); text-decoration:none; display:flex; align-items:center; gap:8px;}
  .backlink:hover{color:var(--paper);}
  .sr-only{position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap;}
  @media (max-width:980px){
    .calc{grid-template-columns:1fr;}
    .result{position:static;}
  }
  .switch button:not([aria-pressed]){color:var(--paper);}
  .switch button:not([aria-pressed]):hover{color:var(--accent,var(--amber)); border-color:var(--accent,var(--amber));}