/* =============================================================
   IRPFcal — hoja de estilos unica
   1. Tokens · 2. Reset · 3. Cabecera · 4. Calculadora · 5. Paneles
   6. Secciones · 7. Anuncios · 8. Pie · 9. Responsive
   ============================================================= */

/* 1. Tokens ------------------------------------------------- */
:root{
  --navy-900:#061229;
  --navy:#0b1d47;
  --navy-2:#0f2d6b;
  --blue:#1b6cf0;
  --cyan:#4fc3f7;
  --coral:#e8663d;
  --ink:#0c1730;
  --ink-2:#4c5a76;
  --ink-3:#8794ad;
  --line:#e2e8f2;
  --bg:#f4f7fc;
  --card:#fff;
  --grad:linear-gradient(118deg,var(--navy-2),var(--blue) 60%,var(--cyan));
  --display:"Manrope","Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --r:16px;
  --shadow:0 1px 2px rgba(6,18,41,.05),0 18px 44px -20px rgba(6,18,41,.26);
  --ease:cubic-bezier(.16,1,.3,1);
  --gutter:clamp(18px,4vw,34px);
}

/* 2. Reset -------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box;margin:0}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{font-family:var(--sans);font-size:16px;line-height:1.65;color:var(--ink);
  background:var(--bg);-webkit-font-smoothing:antialiased;overflow-x:clip}
img,svg,canvas{display:block;max-width:100%}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
input{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
p{text-wrap:pretty}
h1,h2,h3{font-family:var(--display);text-wrap:balance;line-height:1.15;letter-spacing:-.03em}
::selection{background:var(--blue);color:#fff}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:6px}
.wrap{width:min(1120px,100%);margin-inline:auto;padding-inline:var(--gutter)}
.skip-link{position:fixed;top:-100px;left:16px;z-index:99;background:#fff;color:var(--ink);
  padding:.6rem 1rem;border-radius:8px;box-shadow:var(--shadow)}
.skip-link:focus{top:16px}
.hint{font-size:.82rem;color:var(--ink-3);line-height:1.5;margin-top:.5rem}

/* 3. Cabecera ----------------------------------------------- */
.site-header{position:sticky;top:0;z-index:40;background:rgba(244,247,252,.9);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:84px}
.brand{display:flex;align-items:center}
.brand-logo{height:56px;width:auto}
.site-nav{display:flex;gap:24px;font-size:.92rem;font-weight:500;color:var(--ink-2)}
.site-nav a:hover{color:var(--blue)}

/* 4. Calculadora -------------------------------------------- */
.hero{padding-top:clamp(24px,5vw,44px)}
h1{font-size:clamp(1.7rem,4.2vw,2.6rem);font-weight:800;letter-spacing:-.04em}
.hero-sub{margin-top:.75rem;max-width:62ch;color:var(--ink-2);font-size:clamp(.98rem,1.6vw,1.08rem)}

.calc{margin-top:clamp(18px,3vw,26px);display:grid;gap:0;background:var(--card);
  border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);overflow:hidden}
.calc-form{padding:clamp(20px,3.4vw,30px)}
.calc-out{padding:clamp(20px,3.4vw,30px);color:#fff;
  background:radial-gradient(600px 320px at 80% -10%,rgba(79,195,247,.3),transparent 62%),
             linear-gradient(160deg,var(--navy),var(--navy-2))}

.fld{display:block;margin-bottom:18px}
.fld-label{display:block;font-size:.84rem;font-weight:600;color:var(--ink-2);margin-bottom:7px}
.fld-money{display:flex;align-items:center;border:1px solid var(--line);border-radius:11px;
  background:#fff;overflow:hidden;transition:border-color .18s var(--ease),box-shadow .18s var(--ease)}
.fld-money:focus-within{border-color:var(--blue);box-shadow:0 0 0 3px rgba(27,108,240,.13)}
.fld-money input{flex:1;min-width:0;border:0;outline:none;padding:.8rem .9rem;
  font-family:var(--display);font-weight:700;font-size:1.15rem;font-variant-numeric:tabular-nums}
.fld-money span{padding:0 .95rem;color:var(--ink-3);font-weight:600;font-size:1.05rem}
.fld input[type=range]{width:100%;accent-color:var(--blue)}
.quick{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px}
.quick button{font-size:.78rem;color:var(--ink-3);border:1px dashed var(--line);
  border-radius:999px;padding:.3rem .75rem;transition:all .18s var(--ease)}
.quick button:hover{color:var(--blue);border-color:var(--blue);border-style:solid}

.cuota{display:grid;gap:2px;padding-bottom:18px;border-bottom:1px solid rgba(255,255,255,.14)}
.cuota-lbl{font-size:.74rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;
  color:var(--cyan)}
.cuota-val{font-family:var(--display);font-weight:800;font-size:clamp(2.2rem,7vw,3.1rem);
  line-height:1.05;letter-spacing:-.04em;font-variant-numeric:tabular-nums}
.res{margin-top:18px;display:grid;gap:11px}
.res div{display:flex;justify-content:space-between;gap:14px;align-items:baseline}
.res dt{font-size:.88rem;color:rgba(255,255,255,.66)}
.res dd{font-family:var(--display);font-weight:700;font-size:1rem;font-variant-numeric:tabular-nums}
.afford{margin-top:18px;font-size:.84rem;color:rgba(255,255,255,.62);
  background:rgba(255,255,255,.07);border-radius:11px;padding:.7rem .85rem}
.afford b{color:#fff}

.disclaimer{margin-top:16px;font-size:.85rem;color:var(--ink-2);
  background:#fff7ea;border:1px solid #f2ddb8;border-radius:12px;padding:.8rem 1rem;max-width:80ch}

/* 5. Paneles ------------------------------------------------ */
.panel{margin-top:26px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r);padding:clamp(20px,3.2vw,30px);box-shadow:0 1px 2px rgba(6,18,41,.05)}
.panel h2{font-size:1.2rem;font-weight:700}
.panel-sub{margin-top:.4rem;font-size:.92rem;color:var(--ink-2);max-width:70ch}
.panel-head{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between}
.chart-wrap{margin-top:18px;overflow-x:auto}
.chart-wrap canvas{width:100%;min-width:520px;height:auto}
.chart-key{display:flex;flex-wrap:wrap;gap:18px;margin-top:12px;font-size:.82rem;color:var(--ink-2)}
.chart-key i{display:inline-block;width:12px;height:12px;border-radius:3px;margin-right:6px;
  vertical-align:-1px}
.k-cap{background:#0f2d6b}.k-int{background:#8fd0ff}.k-pend{background:var(--coral)}

.seg{display:inline-flex;background:#eef2f9;border-radius:10px;padding:3px}
.seg button{padding:.4rem .85rem;border-radius:8px;font-size:.85rem;font-weight:600;
  color:var(--ink-2);transition:all .18s var(--ease)}
.seg button.is-on{background:#fff;color:var(--navy);box-shadow:0 1px 2px rgba(6,18,41,.12)}

.tabla-wrap{overflow-x:auto;margin-top:16px;border:1px solid var(--line);border-radius:12px;
  max-height:520px;overflow-y:auto}
.tabla{width:100%;border-collapse:collapse;font-size:.9rem;min-width:560px}
.tabla th{position:sticky;top:0;text-align:right;background:#f7fafe;font-size:.72rem;
  letter-spacing:.07em;text-transform:uppercase;color:var(--ink-3);font-weight:600;padding:11px 14px;
  border-bottom:1px solid var(--line)}
.tabla th:first-child{text-align:left}
.tabla td{padding:10px 14px;border-top:1px solid var(--line);text-align:right;
  font-variant-numeric:tabular-nums}
.tabla td:first-child{text-align:left;color:var(--ink-2);font-weight:600}
.tabla tbody tr:hover{background:#fafcff}

/* 6. Secciones ---------------------------------------------- */
.sec{padding-block:clamp(40px,6vw,72px)}
.sec--alt{background:#fff;border-block:1px solid var(--line)}
.sec h2{font-size:clamp(1.4rem,3vw,1.95rem);font-weight:700}
.sec-sub{margin-top:.6rem;color:var(--ink-2);max-width:66ch}
.sec-note{margin-top:1rem;font-size:.88rem;color:var(--ink-2);max-width:80ch}

.cards{display:grid;gap:16px;margin-top:1.8rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px}
.card-ico{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;
  background:#eef4ff;font-size:1.15rem;margin-bottom:12px}
.card h3{font-size:1.06rem;font-weight:700;margin-bottom:.45rem}
.card p{font-size:.92rem;color:var(--ink-2);margin-bottom:.6rem}
.formula{background:#f5f8fd;border:1px solid var(--line);border-radius:10px;padding:.7rem .8rem;
  text-align:center;font-size:.95rem}
.formula code{font-family:ui-monospace,"SFMono-Regular",Menlo,monospace;color:var(--navy-2)}
.formula-nota{font-size:.78rem!important;color:var(--ink-3)!important}

.faq{display:grid;gap:8px;max-width:900px;margin-top:1.6rem}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:0 16px}
.faq summary{cursor:pointer;font-weight:600;padding:14px 0;list-style:none;
  display:flex;justify-content:space-between;gap:12px;align-items:center;font-size:.96rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.3rem;color:var(--blue);font-weight:400;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 0 16px;font-size:.92rem;color:var(--ink-2);max-width:78ch}
.faq code{font-family:ui-monospace,Menlo,monospace;background:#f2f6fd;padding:.1rem .3rem;border-radius:4px}

/* 7. Anuncios ----------------------------------------------- */
.ad-slot{border:1.5px dashed #c9d3e6;border-radius:var(--r);background:#eaf0fa;
  display:grid;place-items:center;color:#95a2bd;font-size:.72rem;font-weight:700;
  letter-spacing:.22em}
.ad-leaderboard{min-height:104px;margin-block:30px 8px}
.ad-incontent{min-height:262px;margin-block:8px}

/* 8. Pie ---------------------------------------------------- */
.site-footer{background:var(--navy-900);color:rgba(255,255,255,.64)}
.footer-inner{padding-block:36px;display:grid;gap:22px}
.foot-top{display:grid;gap:22px;align-items:center}
.foot-id{display:grid;gap:12px;justify-items:start}
.foot-logo{height:50px;width:auto}
.foot-brand{font-size:.88rem;color:rgba(255,255,255,.6);max-width:46ch}
.by-webtinova{display:inline-flex;flex-direction:column;gap:10px;align-items:flex-start}
.by-webtinova span{font-size:.7rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;
  color:rgba(255,255,255,.42)}
.by-webtinova img{height:96px;width:auto;transition:transform .25s var(--ease)}
.by-webtinova:hover img{transform:translateY(-3px)}
.foot-links{display:flex;flex-wrap:wrap;gap:20px;font-size:.9rem}
.foot-links a:hover{color:#fff}
.foot-note{font-size:.8rem;color:rgba(255,255,255,.4);
  border-top:1px solid rgba(255,255,255,.09);padding-top:18px}


/* --- especificos de IRPFcal --- */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.fld select{width:100%;padding:.72rem .85rem;border:1px solid var(--line);border-radius:11px;
  background:#fff;font-weight:500;transition:border-color .18s var(--ease)}
.fld select:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(27,108,240,.13)}
.neto{display:grid;gap:2px;padding-bottom:18px;border-bottom:1px solid rgba(255,255,255,.14)}
.neto-lbl{font-size:.74rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--cyan)}
.neto-val{font-family:var(--display);font-weight:800;font-size:clamp(2.1rem,6.6vw,3rem);
  line-height:1.05;letter-spacing:-.04em;font-variant-numeric:tabular-nums}
.foral{display:grid;gap:8px;align-content:center;min-height:220px}
.foral-ico{font-size:1.6rem}
.foral p{font-size:.95rem;color:rgba(255,255,255,.82)}
.foral strong,.foral b{color:#fff}
.foral-nota{font-size:.85rem!important;color:rgba(255,255,255,.55)!important}
.panel--desglose{margin-top:20px}
.tabla-desglose td:first-child{font-weight:500;color:var(--ink-2)}
.tabla-desglose tr.neg td:last-child{color:#c0392b}
.tabla-desglose tr.sub td{background:#f7fafe;font-weight:600;color:var(--ink)}
.tabla-desglose tr.info td{color:var(--ink-3);font-style:italic}
.tabla-desglose tr.tot td{background:#eef7f1;font-weight:700;color:#0f7a4a;font-size:1rem}
.tabla-desglose tr.pos td{font-weight:600}
@media (max-width:559px){ .grid-2{grid-template-columns:1fr} }

/* 9. Responsive --------------------------------------------- */
@media (min-width:860px){
  .calc{grid-template-columns:minmax(0,1fr) minmax(0,.9fr)}
  .cards{grid-template-columns:repeat(3,1fr)}
  .foot-top{grid-template-columns:minmax(0,1fr) auto;gap:40px}
  .by-webtinova{align-items:flex-end;text-align:right}
}
@media (max-width:859px){
  .site-nav{display:none}
}
@media (max-width:719px){
  .header-inner{height:66px}
  .brand-logo{height:42px}
  html{scroll-padding-top:78px}
  .by-webtinova img{height:82px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .by-webtinova:hover img{transform:none}
}