/* ==========================================================================
   Calculadoras Deportivas — hoja de estilos compartida
   Mismo sistema de diseño que las calculadoras (variables idénticas), más
   el "chrome" del sitio: navegación global, selector de idioma, migas,
   bloque de promoción, captación de correo y tarjetas de la portada.
   ========================================================================== */

:root{
  --bg:#fbf9f5; --surface:#ffffff; --surface-2:#f4f1ea; --border:#e6e0d5;
  --ink:#16181c; --ink-2:#4a4f57; --ink-muted:#6f737b;
  --accent:#0e6e7a; --accent-ink:#ffffff;
  --good:#0e6e4a; --warn:#a8541c;
  --radius:14px; --shadow:0 1px 2px rgba(0,0,0,.05),0 8px 24px rgba(0,0,0,.05);
}
html[data-theme="dark"]{
  --bg:#101312; --surface:#1a1d1c; --surface-2:#242826; --border:#333733;
  --ink:#f2f2ef; --ink-2:#c2c2bc; --ink-muted:#8f8f88;
  --accent:#3fb3c0; --accent-ink:#0d0f12;
  --good:#4fc79a; --warn:#e0a05c;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:16px; line-height:1.6; -webkit-font-smoothing:antialiased;
  overflow-x:clip;   /* la banda de cabecera sale a todo el ancho */
}
.wrap{max-width:1120px;margin:0 auto;padding:0 18px}
a{color:var(--accent)}
h1,h2,h3{line-height:1.2;margin:0 0 .5em;letter-spacing:-.02em}
h1{font-size:clamp(1.7rem,4.2vw,2.6rem);font-weight:700}
h2{font-size:clamp(1.3rem,3vw,1.75rem);font-weight:650;margin-top:2.2em}
h3{font-size:1.08rem;font-weight:650;margin-top:1.6em}
p{margin:0 0 1em;color:var(--ink-2)}
section.content{max-width:820px}
.hero{padding:34px 0 10px;max-width:760px}
.hero p.lead{font-size:1.06rem}

/* --- cabecera global ---------------------------------------------------- */
header.site{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.hd{display:flex;align-items:center;gap:12px;height:58px}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;letter-spacing:-.02em;color:var(--ink);text-decoration:none;flex:none}
.brand svg{width:24px;height:24px;flex:none}
.spacer{flex:1}
.iconbtn{background:var(--surface-2);border:1px solid var(--border);color:var(--ink-2);
  border-radius:9px;height:36px;padding:0 12px;font-size:.86rem;cursor:pointer;display:inline-flex;align-items:center;gap:7px}
.iconbtn:hover{color:var(--ink);border-color:var(--ink-muted)}

.da-nav{display:flex;align-items:center;gap:2px;overflow-x:auto;scrollbar-width:none}
.da-nav::-webkit-scrollbar{display:none}
.da-nav a{color:var(--ink-2);text-decoration:none;font-size:.9rem;font-weight:550;
  padding:7px 11px;border-radius:9px;white-space:nowrap}
.da-nav a:hover{background:var(--surface-2);color:var(--ink)}
.da-nav a[aria-current="page"]{color:var(--ink);background:var(--surface-2)}

.da-lang{display:inline-flex;border:1px solid var(--border);border-radius:9px;overflow:hidden;flex:none}
.da-lang a{padding:6px 9px;font-size:.78rem;font-weight:650;letter-spacing:.03em;
  color:var(--ink-muted);text-decoration:none;background:var(--surface-2)}
.da-lang a+a{border-left:1px solid var(--border)}
.da-lang a:hover{color:var(--ink)}
.da-lang a[aria-current="true"]{background:var(--accent);color:var(--accent-ink)}

/* --- migas de pan -------------------------------------------------------- */
.da-crumbs{font-size:.82rem;color:var(--ink-muted);padding:14px 0 0;margin:0}
.da-crumbs a{color:var(--ink-muted);text-decoration:none}
.da-crumbs a:hover{color:var(--ink-2);text-decoration:underline}
.da-crumbs span{margin:0 6px;opacity:.55}

/* --- huecos de anuncio --------------------------------------------------- */
.ad{margin:26px 0;min-height:100px;display:flex;align-items:center;justify-content:center;
  border:1px dashed var(--border);border-radius:var(--radius);background:var(--surface-2);
  color:var(--ink-muted);font-size:.78rem;letter-spacing:.06em;text-transform:uppercase}

/* --- tarjetas de la portada ---------------------------------------------- */
.da-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(288px,1fr));gap:16px;margin:26px 0}
.da-card{display:block;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:20px;text-decoration:none;color:inherit;box-shadow:var(--shadow);transition:transform .12s ease,border-color .12s ease}
.da-card:hover{transform:translateY(-2px);border-color:var(--accent)}
.da-card .k{font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-muted);font-weight:650}
.da-card h3{margin:.5em 0 .35em;font-size:1.12rem;color:var(--ink)}
.da-card p{margin:0;font-size:.92rem}
.da-card .go{display:inline-block;margin-top:12px;font-size:.88rem;font-weight:650;color:var(--accent)}

/* --- bloque de promoción (libros KDP) ------------------------------------ */
.da-promo{display:flex;gap:18px;align-items:flex-start;flex-wrap:wrap;
  background:var(--surface);border:1px solid var(--border);border-left:3px solid var(--accent);
  border-radius:var(--radius);padding:20px 22px;margin:30px 0}
.da-promo .txt{flex:1 1 300px;min-width:0}
.da-promo .k{font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-muted);font-weight:650;margin:0 0 6px}
.da-promo h3{margin:0 0 .4em;font-size:1.08rem}
.da-promo p{margin:0 0 14px;font-size:.94rem}
.da-btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:var(--accent-ink);
  text-decoration:none;font-weight:650;font-size:.92rem;padding:11px 18px;border-radius:10px;border:0;cursor:pointer}
.da-btn:hover{filter:brightness(1.06)}
.da-btn.ghost{background:var(--surface-2);color:var(--ink);border:1px solid var(--border)}
.da-note{font-size:.78rem;color:var(--ink-muted);margin:10px 0 0}

/* --- captación de correo -------------------------------------------------- */
.da-mail{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);
  padding:22px;margin:30px 0;max-width:820px}
.da-mail h3{margin:0 0 .4em}
.da-mail p{margin:0 0 14px;font-size:.94rem}
.da-mail form{display:flex;gap:10px;flex-wrap:wrap}
.da-mail input[type=email]{flex:1 1 240px;min-width:0;height:44px;padding:0 14px;font-size:.95rem;
  border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--ink)}
.da-mail input[type=email]:focus{outline:2px solid var(--accent);outline-offset:1px}
.da-mail label.consent{display:flex;gap:9px;align-items:flex-start;font-size:.8rem;color:var(--ink-muted);margin-top:12px;line-height:1.45}
.da-mail label.consent input{margin-top:3px;flex:none}

/* --- preguntas frecuentes y fórmulas ------------------------------------- */
details.faq{border:1px solid var(--border);border-radius:11px;padding:14px 16px;margin-bottom:10px;background:var(--surface)}
details.faq summary{cursor:pointer;font-weight:650;font-size:.98rem}
details.faq p{margin:.8em 0 0}
.formula{background:var(--surface-2);border:1px solid var(--border);border-radius:11px;padding:14px 16px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.86rem;overflow-x:auto;color:var(--ink-2)}

/* --- tablas -------------------------------------------------------------- */
.da-table{width:100%;border-collapse:collapse;font-size:.92rem;margin:18px 0;display:block;overflow-x:auto}
.da-table th,.da-table td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border);white-space:nowrap}
.da-table th{font-size:.76rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-muted);font-weight:650}
.da-table tbody tr:hover{background:var(--surface-2)}

/* --- pie ----------------------------------------------------------------- */
footer.site{border-top:1px solid var(--border);margin-top:56px;padding:28px 0 44px;font-size:.85rem;color:var(--ink-muted)}
footer.site a{color:var(--ink-2)}
.da-foot{display:flex;gap:26px;flex-wrap:wrap;justify-content:space-between;margin-bottom:18px}
.da-foot div{min-width:150px}
.da-foot strong{display:block;color:var(--ink);font-size:.82rem;margin-bottom:8px}
.da-foot ul{list-style:none;margin:0;padding:0}
.da-foot li{margin-bottom:5px}
.da-foot a{text-decoration:none}
.da-foot a:hover{text-decoration:underline}
.disc{font-size:.82rem;color:var(--ink-muted);margin-top:8px}

@media (max-width:720px){
  .hd{height:auto;padding:10px 0;flex-wrap:wrap}
  .da-nav{order:3;width:100%;margin-top:2px}
}

/* Linea de enlaces a las otras secciones, al final de cada calculadora. */
.da-secciones{border-top:1px solid var(--border);padding-top:18px}
.da-secciones h2{font-size:1rem;color:var(--ink-muted);font-weight:600;margin:0 0 6px}
.da-secciones p{margin:0}
.da-secciones a{color:var(--ink-2);text-decoration:none;border-bottom:1px solid var(--border)}
.da-secciones a:hover{color:var(--accent);border-bottom-color:currentColor}