/* ============================================================
   Piscina al Día — sistema de diseño
   Paleta: "agua de piscina" — azul profundo de vaso + turquesa de
   superficie + arena mojada. Colores reales del nicho (como el
   court-blue + optic-yellow de Pickleball Diario), NO el default
   de IA (crema+serif+terracota).
   ============================================================ */
:root{
  --bg:#EFF4F5;           /* agua muy diluida, casi blanco */
  --surface:#FFFFFF;
  --surface-2:#DFEBEC;    /* turquesa lavado */
  --ink:#0C242A;          /* fondo de piscina en sombra */
  --ink-soft:#3C585E;
  --ink-faint:#6F898E;
  --brand:#0B6E88;        /* azul de vaso de piscina */
  --brand-ink:#E9F6F9;
  --brand-soft:#D2E9EE;
  --aqua:#2AA7B8;         /* turquesa de superficie — 2º color, acentos */
  --aqua-soft:#CFEBEE;
  --sand:#7C6B47;         /* arena mojada */
  --sand-soft:#ECE2CD;
  --line:#C7D8D9;
  --warn:#BC6A22;
  --warn-soft:#F5E5D2;
  --ok:#2C7A57;
  --ok-soft:#D9EAE0;
  --shadow:0 1px 2px rgba(12,36,42,.06), 0 10px 28px -14px rgba(12,36,42,.20);
  --radius:14px;
  --wrap:1080px;
  --measure:68ch;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#091619;
    --surface:#0F262B;
    --surface-2:#16333A;
    --ink:#E7F1F2;
    --ink-soft:#AEC5C8;
    --ink-faint:#7C979B;
    --brand:#45B4CC;
    --brand-ink:#07222A;
    --brand-soft:#153740;
    --aqua:#57C6D4;
    --aqua-soft:#123339;
    --sand:#CBB68B;
    --sand-soft:#2A2415;
    --line:#254249;
    --warn:#DE9A56;
    --warn-soft:#3A2814;
    --ok:#73C09A;
    --ok-soft:#173024;
    --shadow:0 1px 2px rgba(0,0,0,.4), 0 12px 32px -14px rgba(0,0,0,.65);
  }
}
:root[data-theme="dark"]{
  --bg:#091619; --surface:#0F262B; --surface-2:#16333A;
  --ink:#E7F1F2; --ink-soft:#AEC5C8; --ink-faint:#7C979B;
  --brand:#45B4CC; --brand-ink:#07222A; --brand-soft:#153740;
  --aqua:#57C6D4; --aqua-soft:#123339; --sand:#CBB68B; --sand-soft:#2A2415;
  --line:#254249; --warn:#DE9A56; --warn-soft:#3A2814; --ok:#73C09A; --ok-soft:#173024;
  --shadow:0 1px 2px rgba(0,0,0,.4), 0 12px 32px -14px rgba(0,0,0,.65);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"Public Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:17px;line-height:1.65;
  text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-underline-offset:2px}
a:hover{text-decoration-thickness:2px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}

/* --- Tipografía display --- */
h1,h2,h3,h4{
  font-family:"Sora","Public Sans",system-ui,sans-serif;
  font-weight:700;line-height:1.12;letter-spacing:-.015em;margin:0 0 .4em;
}
h1{font-size:clamp(2rem,1.3rem + 3vw,3rem)}
h2{font-size:clamp(1.5rem,1.15rem + 1.6vw,2rem);margin-top:1.6em}
h3{font-size:1.25rem;margin-top:1.4em}
p,ul,ol{margin:0 0 1.1em}
.prose{max-width:var(--measure)}
.prose h2,.prose h3{scroll-margin-top:90px}
.prose ul,.prose ol{padding-left:1.3em}
.prose li{margin:.35em 0}
.lead{font-size:1.2rem;color:var(--ink-soft);max-width:60ch}
.eyebrow{font-weight:700;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;color:var(--brand)}

/* --- Header + nav --- */
header.site{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
header.site .bar{display:flex;align-items:center;gap:16px;padding:12px 20px;max-width:var(--wrap);margin:0 auto}
.logo{display:inline-flex;align-items:center;gap:9px;font-family:"Sora",sans-serif;font-weight:700;font-size:1.15rem;color:var(--ink);text-decoration:none;letter-spacing:-.02em}
.logo .dot{width:14px;height:14px;border-radius:50%;background:var(--brand);position:relative;flex:none}
.logo .dot::after{content:"";position:absolute;inset:3px;border-radius:50%;border:2px solid var(--surface)}
nav.primary{margin-left:auto;display:flex;flex-wrap:wrap;gap:2px}
nav.primary a{padding:7px 10px;border-radius:8px;color:var(--ink-soft);text-decoration:none;font-size:.93rem;font-weight:500;white-space:nowrap}
nav.primary a:hover{background:var(--surface-2);color:var(--ink)}
nav.primary a[aria-current="page"]{color:var(--brand);background:var(--brand-soft)}
.menu-toggle{display:none;appearance:none;border:none;background:transparent;width:40px;height:40px;padding:0;cursor:pointer;position:relative;border-radius:6px;color:var(--ink);margin-left:auto}
.menu-toggle span{position:absolute;left:9px;right:9px;height:2px;border-radius:2px;background:currentColor;transition:transform .2s ease,opacity .2s ease}
.menu-toggle span:nth-child(1){top:14px}.menu-toggle span:nth-child(2){top:19px}.menu-toggle span:nth-child(3){top:24px}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
@media (max-width:980px){
  nav.primary{margin-left:0}
  .menu-toggle{display:block}
  header.site .bar{flex-wrap:wrap}
  nav.primary{order:3;width:100%;flex-direction:column;align-items:stretch;gap:2px;max-height:0;overflow:hidden;transition:max-height .25s ease}
  nav.primary.open{max-height:820px;margin-top:10px;padding-top:10px;border-top:1px solid var(--line)}
  nav.primary a{padding:10px}
}

/* --- Hero / secciones --- */
.hero{padding:56px 0 40px}
.hero .lead{margin-top:.6em}
main{padding:36px 0 20px;display:block}
section{margin:44px 0}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:18px;flex-wrap:wrap}
.section-head h2{margin:0}
.section-head a{font-weight:600;font-size:.95rem}

/* --- Grids de tarjetas --- */
.cards{display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:8px}
.card a.card-title{color:var(--ink);text-decoration:none;font-family:"Sora",sans-serif;font-weight:700;font-size:1.08rem;line-height:1.2;letter-spacing:-.01em}
.card a.card-title:hover{color:var(--brand)}
.card p{margin:0;color:var(--ink-soft);font-size:.96rem}
.card .kicker{font-size:.75rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--aqua)}

.pillars{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}
.pillar{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;text-decoration:none;color:var(--ink);box-shadow:var(--shadow);transition:transform .12s ease}
.pillar:hover{transform:translateY(-2px)}
.pillar strong{font-family:"Sora",sans-serif;font-size:1.05rem;display:block;letter-spacing:-.01em}
.pillar span{color:var(--ink-faint);font-size:.9rem}

/* --- Chips / tags --- */
.tag{display:inline-block;font-weight:600;font-size:.8rem;padding:3px 10px;border-radius:999px;background:var(--brand-soft);color:var(--brand)}
.tag.aqua{background:var(--aqua-soft);color:var(--aqua)}
.tag.sand{background:var(--sand-soft);color:var(--sand)}

/* --- Callout (ojo al cierre </div>, no </p>) --- */
.callout{background:var(--surface-2);border-left:3px solid var(--brand);border-radius:0 var(--radius) var(--radius) 0;padding:16px 20px;margin:22px 0}
.callout.aqua{border-color:var(--aqua)}
.callout.warn{border-color:var(--warn)}

/* --- Tablas dentro de prosa --- */
.table-scroll{overflow-x:auto;margin:18px 0}
table{border-collapse:collapse;width:100%;font-size:.95rem;min-width:480px}
th,td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--line)}
th{font-size:.78rem;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-faint)}

/* --- Breadcrumb --- */
.crumbs{font-size:.85rem;color:var(--ink-faint);margin:22px 0 6px}
.crumbs a{color:var(--ink-faint)}

/* --- Meta de artículo --- */
.article-meta{color:var(--ink-faint);font-size:.9rem;margin:0 0 1.4em}

/* --- Footer --- */
footer.site{background:var(--surface);border-top:1px solid var(--line);margin-top:70px}
footer.site .wrap{padding:40px 20px}
footer.site h3{font-size:1rem;margin:0 0 10px}
.foot-grid{display:grid;gap:28px;grid-template-columns:2fr 1fr 1fr}
.foot-grid nav{display:flex;flex-direction:column;gap:6px}
.foot-grid nav a{color:var(--ink-soft);text-decoration:none;font-size:.92rem}
.foot-grid nav a:hover{color:var(--ink)}
.foot-bottom{margin-top:28px;padding-top:18px;border-top:1px solid var(--line);font-size:.85rem;color:var(--ink-faint);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.foot-bottom a{color:var(--ink-faint)}
.foot-link{appearance:none;border:0;background:none;padding:0;margin:0;font:inherit;color:var(--ink-faint);text-decoration:underline;cursor:pointer}
.foot-link:hover{color:var(--ink)}
@media(max-width:720px){.foot-grid{grid-template-columns:1fr}}

/* --- Botón --- */
.btn{display:inline-block;background:var(--brand);color:var(--brand-ink);text-decoration:none;font-weight:700;padding:11px 20px;border-radius:10px;font-size:.98rem}
.btn:hover{filter:brightness(1.06)}
.btn.ghost{background:transparent;color:var(--brand);border:1.5px solid var(--brand)}

/* --- Aviso de afiliación --- */
.aff-note{background:var(--sand-soft);color:var(--sand);border-radius:10px;padding:10px 14px;font-size:.86rem;margin:0 0 1.4em}
:root:not([data-theme="light"]) .aff-note{color:var(--ink-soft)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .aff-note{color:var(--ink-soft)}}

/* --- Calculadora --- */
.calc{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);margin:22px 0}
.calc .row{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:14px}
.calc label{display:flex;flex-direction:column;gap:5px;font-size:.9rem;font-weight:600;color:var(--ink-soft);flex:1;min-width:120px}
.calc input,.calc select{padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);font:inherit;font-size:1rem}
.calc .result{background:var(--brand-soft);color:var(--brand);border-radius:10px;padding:16px 18px;font-family:"Sora",sans-serif;font-weight:700;font-size:1.15rem}
.calc .result span{font-size:1.7rem;display:block;margin-top:2px}

/* --- Comparador filtrable --- */
.cmp-filters{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0}
.cmp-filters select,.cmp-filters input[type=search]{padding:9px 12px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--ink);font:inherit;font-size:.95rem}
.cmp-filters input[type=search]{flex:1;min-width:180px}
.cmp-count{color:var(--ink-faint);font-size:.9rem;margin:6px 0 14px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}