/* Vatio a Vatio — hoja de estilos.
   Concepto: una publicación sobria con el lenguaje del contador de la luz.
   Los tres colores de los tramos horarios (valle, llano, punta) son el único
   color semántico; el azul eléctrico es el acento de marca. */

:root {
  --bg: #f4f6fa;
  --surface: #ffffff;
  --surface-2: #e9eef6;
  --ink: #0f1b2d;
  --ink-2: #33415a;
  --muted: #5b6880;
  --line: #d6deea;
  --accent: #1f46d6;
  --accent-ink: #ffffff;
  --accent-soft: #e3e9fc;
  --valle: #178a5c;
  --llano: #b97a08;
  --punta: #cf3f24;
  --valle-soft: #d9f0e6;
  --llano-soft: #f8ead0;
  --punta-soft: #fbe0da;
  --font-display: "Bricolage Grotesque", "Avenir Next", "Segoe UI", system-ui, sans-serif;
  --font-body: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-data: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --radius: 10px;
  --measure: 66ch;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b131f; --surface: #121c2c; --surface-2: #19263a;
    --ink: #e9eef7; --ink-2: #c3cddd; --muted: #94a2b9; --line: #24334b;
    --accent: #8ba6ff; --accent-ink: #0b131f; --accent-soft: #1b2a52;
    --valle: #4cc793; --llano: #e5ae3d; --punta: #f0795f;
    --valle-soft: #123527; --llano-soft: #3a2c0d; --punta-soft: #40190f;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0b131f; --surface: #121c2c; --surface-2: #19263a;
  --ink: #e9eef7; --ink-2: #c3cddd; --muted: #94a2b9; --line: #24334b;
  --accent: #8ba6ff; --accent-ink: #0b131f; --accent-soft: #1b2a52;
  --valle: #4cc793; --llano: #e5ae3d; --punta: #f0795f;
  --valle-soft: #123527; --llano-soft: #3a2c0d; --punta-soft: #40190f;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--font-display); font-size: 16px; line-height: 1.5;
}
img, svg { max-width: 100%; }
a { color: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px;
}
h1, h2, h3 { font-family: var(--font-display); text-wrap: balance; margin: 0; letter-spacing: -0.015em; }
p { margin: 0; }

.wrap {
  max-width: 1140px; margin-inline: auto;
  padding-left: max(18px, env(safe-area-inset-left, 0px));
  padding-right: max(18px, env(safe-area-inset-right, 0px));
}
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 0; background: var(--accent); color: var(--accent-ink); padding: 8px 14px; z-index: 50; }
.skip:focus { left: 8px; top: 8px; }

/* ---------- Cabecera ---------- */
.site-head { background: var(--surface); border-bottom: 1px solid var(--line); }
.head-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 14px; }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.logo svg { width: 34px; height: 34px; flex: none; }
.logo-word { font-weight: 800; font-size: 1.35rem; letter-spacing: -0.03em; line-height: 1; }
.logo-word span { color: var(--accent); font-weight: 500; }
.search-btn {
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer;
  font: 500 0.92rem var(--font-display); color: var(--muted);
  background: var(--bg); border: 1px solid var(--line); border-radius: 999px; padding: 9px 16px;
}
.search-btn:hover { color: var(--ink); border-color: var(--muted); }
.search-btn svg { width: 16px; height: 16px; }
.nav { border-top: 1px solid var(--line); }
.nav ul { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; overflow-x: auto; scrollbar-width: none; }
.nav ul::-webkit-scrollbar { display: none; }
.nav a {
  display: block; white-space: nowrap; text-decoration: none; font-weight: 500; font-size: 0.95rem;
  color: var(--ink-2); padding: 12px 12px; border-bottom: 2px solid transparent;
}
.nav li:first-child a { padding-left: 0; }
.nav a:hover { color: var(--accent); }
.nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }

/* ---------- Franja de tramo horario ---------- */
.tramo { background: var(--ink); color: var(--bg); }
.tramo-row { display: flex; align-items: center; gap: 16px; padding-block: 9px; flex-wrap: wrap; }
.tramo-now { display: inline-flex; align-items: center; gap: 9px; font-size: 0.88rem; }
.tramo-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); flex: none; }
.tramo[data-p="valle"] .tramo-dot { background: var(--valle); }
.tramo[data-p="llano"] .tramo-dot { background: var(--llano); }
.tramo[data-p="punta"] .tramo-dot { background: var(--punta); }
.tramo-now strong { font-weight: 700; }
.tramo-bar { display: flex; gap: 2px; flex: 1 1 220px; min-width: 0; height: 8px; }
.tramo-bar i { flex: 1; border-radius: 2px; opacity: 0.55; }
.tramo-bar i.valle { background: var(--valle); }
.tramo-bar i.llano { background: var(--llano); }
.tramo-bar i.punta { background: var(--punta); }
.tramo-bar i.on { opacity: 1; transform: scaleY(2); }
.tramo a { font-size: 0.82rem; color: inherit; opacity: 0.8; white-space: nowrap; }
.tramo a:hover { opacity: 1; }

/* ---------- Bloques comunes ---------- */
main { display: block; padding-block: 34px 56px; }
.eyebrow {
  font: 600 0.74rem var(--font-display); text-transform: uppercase; letter-spacing: 0.09em;
  color: var(--accent); text-decoration: none;
}
a.eyebrow:hover { text-decoration: underline; }
.sec-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 18px; padding-bottom: 10px; border-bottom: 2px solid var(--ink); }
.sec-head h2 { font-size: 1.3rem; font-weight: 700; }
.sec-head a { font-size: 0.88rem; font-weight: 500; color: var(--accent); text-decoration: none; white-space: nowrap; }
.sec-head a:hover { text-decoration: underline; }
section + section, .block { margin-top: 48px; }
.meta { font: 400 0.8rem var(--font-data); color: var(--muted); letter-spacing: -0.01em; }

.cover { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; border-radius: var(--radius); background: var(--surface-2); }
.cover .bars rect { fill: var(--accent); opacity: 0.22; }
.cover .bars rect.hi { opacity: 0.9; }
.cover .base { stroke: var(--line); stroke-width: 1; }
.cover text { font: 600 11px var(--font-data); fill: var(--muted); letter-spacing: 0.06em; }

/* ---------- Portada ---------- */
.lead-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 36px; }
.lead a.lead-link { text-decoration: none; display: grid; gap: 16px; }
.lead h1, .lead h2 { font-size: clamp(1.7rem, 3.6vw, 2.6rem); font-weight: 800; line-height: 1.08; letter-spacing: -0.03em; }
.lead a.lead-link:hover h2 { color: var(--accent); }
.lead .dek { font: 400 1.08rem/1.55 var(--font-body); color: var(--ink-2); max-width: 60ch; }
.lead-text { display: grid; gap: 10px; }
.side-list { display: grid; gap: 0; align-content: start; }
.side-list .eyebrow { margin-bottom: 6px; }
.side-item { display: grid; gap: 6px; padding-block: 16px; border-top: 1px solid var(--line); text-decoration: none; }
.side-item:first-of-type { border-top: 2px solid var(--ink); }
.side-item h3 { font-size: 1.08rem; font-weight: 700; line-height: 1.22; }
.side-item:hover h3 { color: var(--accent); }

.trends { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; padding: 16px 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.trends-label { font: 700 0.78rem var(--font-display); text-transform: uppercase; letter-spacing: 0.09em; margin-right: 6px; display: inline-flex; align-items: center; gap: 7px; }
.trends-label::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--punta); }
.chip { font-size: 0.9rem; font-weight: 500; text-decoration: none; padding: 6px 13px; border-radius: 999px; background: var(--accent-soft); color: var(--ink); }
.chip:hover { background: var(--accent); color: var(--accent-ink); }

.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px 26px; }
.card { display: grid; gap: 12px; align-content: start; text-decoration: none; }
.card-body { display: grid; gap: 7px; }
.card h3 { font-size: 1.12rem; font-weight: 700; line-height: 1.22; }
.card:hover h3 { color: var(--accent); }
.card p { font: 400 0.95rem/1.5 var(--font-body); color: var(--ink-2); }

.two-col { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 44px; }
.rows { display: grid; }
.row { display: grid; grid-template-columns: 132px minmax(0, 1fr); gap: 16px; padding-block: 16px; border-bottom: 1px solid var(--line); text-decoration: none; align-items: start; }
.row:first-child { padding-top: 0; }
.row h3 { font-size: 1.05rem; font-weight: 700; line-height: 1.24; margin-block: 4px 5px; }
.row:hover h3 { color: var(--accent); }
.row p { font: 400 0.92rem/1.45 var(--font-body); color: var(--ink-2); }
.pop { display: grid; list-style: none; margin: 0; padding: 0; }
.pop li { border-bottom: 1px solid var(--line); }
.pop a { display: grid; gap: 4px; padding-block: 13px; text-decoration: none; }
.pop li:first-child a { padding-top: 0; }
.pop h3 { font-size: 1rem; font-weight: 600; line-height: 1.26; }
.pop a:hover h3 { color: var(--accent); }

.cats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.cat { display: grid; gap: 6px; padding: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); text-decoration: none; }
.cat:hover { border-color: var(--accent); }
.cat h3 { font-size: 1.05rem; font-weight: 700; }
.cat p { font-size: 0.88rem; color: var(--muted); line-height: 1.4; }
.cat .meta { margin-top: 2px; }

.about-strip { display: grid; gap: 8px; padding: 26px; background: var(--surface-2); border-radius: var(--radius); }
.about-strip h2 { font-size: 1.25rem; font-weight: 700; }
.about-strip p { font: 400 1rem/1.55 var(--font-body); color: var(--ink-2); max-width: 70ch; }
.about-strip a { color: var(--accent); font-weight: 600; font-family: var(--font-display); font-size: 0.92rem; }

/* ---------- Espacios publicitarios ---------- */
.ad-slot { margin-block: 30px; min-height: 90px; display: grid; place-items: center; text-align: center; border: 1px dashed var(--line); border-radius: var(--radius); color: var(--muted); font: 400 0.76rem var(--font-data); padding: 14px; }
.ad-slot b { display: block; font-weight: 500; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 3px; }
.ad-live { margin-block: 30px; text-align: center; }
.ad-live::before { content: "Publicidad"; display: block; font: 400 0.68rem var(--font-data); color: var(--muted); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 6px; }

/* ---------- Artículo ---------- */
.crumbs { font-size: 0.82rem; color: var(--muted); margin-bottom: 18px; }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--accent); text-decoration: underline; }
.crumbs span { margin-inline: 6px; }
.art-head { display: grid; gap: 14px; max-width: 820px; }
.art-head h1 { font-size: clamp(1.9rem, 4.4vw, 3rem); font-weight: 800; line-height: 1.06; letter-spacing: -0.035em; }
.art-head .dek { font: 400 1.18rem/1.5 var(--font-body); color: var(--ink-2); }
.art-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 52px; margin-top: 28px; align-items: start; }
.art-main { min-width: 0; }
img.cover { object-fit: cover; }
.art-cover { margin: 0 0 28px; }
.art-cover figcaption { font: 400 0.8rem var(--font-display); color: var(--muted); margin-top: 8px; }
.art-cover figcaption a { color: inherit; }
.art-cover .cover { aspect-ratio: 21 / 9; }
.art-aside { position: sticky; top: calc(16px + env(safe-area-inset-top, 0px)); display: grid; gap: 22px; }
.toc { padding: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.toc h2 { font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.09em; font-weight: 700; margin-bottom: 10px; }
.toc ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.toc a { font-size: 0.9rem; line-height: 1.3; color: var(--ink-2); text-decoration: none; display: block; }
.toc a:hover { color: var(--accent); }

.prose { font: 400 1.09rem/1.68 var(--font-body); color: var(--ink); max-width: var(--measure); }
.prose > * + * { margin-top: 1.05em; }
.prose h2 { font-size: 1.55rem; font-weight: 700; line-height: 1.15; margin-top: 1.9em; scroll-margin-top: 20px; }
.prose h3 { font-size: 1.16rem; font-weight: 700; line-height: 1.25; margin-top: 1.5em; scroll-margin-top: 20px; }
.prose h2 + *, .prose h3 + * { margin-top: 0.6em; }
.prose a { color: var(--accent); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.prose a:hover { text-decoration-thickness: 2px; }
.prose strong { font-weight: 600; }
.prose ul, .prose ol { padding-left: 1.25em; margin-bottom: 0; }
.prose li + li { margin-top: 0.45em; }
.prose li::marker { color: var(--accent); font-family: var(--font-display); font-weight: 600; }
.prose blockquote { margin-inline: 0; padding: 14px 18px; background: var(--llano-soft); border-radius: var(--radius); font-family: var(--font-display); font-size: 0.95rem; line-height: 1.5; }
.tw { overflow-x: auto; margin-block: 1.4em; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.prose table { width: 100%; border-collapse: collapse; font: 400 0.92rem/1.4 var(--font-display); }
.prose th { text-align: left; font-weight: 700; font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); background: var(--surface-2); padding: 11px 14px; }
.prose td { padding: 11px 14px; border-top: 1px solid var(--line); font-variant-numeric: tabular-nums; vertical-align: top; }

.faq { margin-top: 44px; max-width: var(--measure); }
.faq h2 { font-size: 1.4rem; font-weight: 700; margin-bottom: 8px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 600; font-size: 1.04rem; padding-block: 15px; list-style: none; display: flex; justify-content: space-between; gap: 14px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 400 1.3rem var(--font-data); color: var(--accent); line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { font: 400 1.02rem/1.6 var(--font-body); color: var(--ink-2); padding-bottom: 16px; }

.sources { margin-top: 40px; padding: 20px 22px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); max-width: var(--measure); }
.sources h2 { font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.09em; font-weight: 700; margin-bottom: 10px; }
.sources ul { margin: 0; padding-left: 1.1em; display: grid; gap: 7px; font-size: 0.9rem; }
.sources a { color: var(--accent); overflow-wrap: anywhere; }
.sources p { font-size: 0.82rem; color: var(--muted); margin-top: 12px; }

.share { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 30px; font-size: 0.88rem; color: var(--muted); }
.share a { text-decoration: none; font-weight: 500; color: var(--ink); border: 1px solid var(--line); border-radius: 999px; padding: 6px 13px; background: var(--surface); }
.share a:hover { border-color: var(--accent); color: var(--accent); }

.afiliado { margin-block: 1.6em; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); font-family: var(--font-display); font-size: 0.95rem; }
.afiliado small { display: block; color: var(--muted); font-size: 0.76rem; margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.08em; }
.patrocinado { display: inline-block; font: 600 0.72rem var(--font-display); text-transform: uppercase; letter-spacing: 0.09em; background: var(--llano-soft); color: var(--ink); padding: 4px 9px; border-radius: 4px; }

.page-head { display: grid; gap: 10px; max-width: 760px; margin-bottom: 30px; }
.page-head h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800; letter-spacing: -0.03em; line-height: 1.08; }
.page-head p { font: 400 1.1rem/1.5 var(--font-body); color: var(--ink-2); }

/* ---------- Buscador ---------- */
.search { position: fixed; inset: 0; z-index: 40; background: color-mix(in srgb, var(--ink) 55%, transparent); padding: calc(7vh + env(safe-area-inset-top, 0px)) max(16px, env(safe-area-inset-right, 0px)) 16px max(16px, env(safe-area-inset-left, 0px)); overflow-y: auto; }
.search-box { max-width: 660px; margin-inline: auto; background: var(--surface); border-radius: 14px; border: 1px solid var(--line); overflow: hidden; }
.search-top { display: flex; align-items: center; gap: 10px; padding: 6px 8px 6px 18px; border-bottom: 1px solid var(--line); }
.search-top svg { width: 18px; height: 18px; color: var(--muted); flex: none; }
#q { flex: 1; min-width: 0; border: 0; background: transparent; color: var(--ink); font: 400 1.08rem var(--font-display); padding: 14px 4px; outline: none; }
#q::placeholder { color: var(--muted); }
.search-close { border: 0; background: var(--bg); color: var(--ink-2); font: 500 0.8rem var(--font-display); border-radius: 8px; padding: 8px 12px; cursor: pointer; }
.search-res { padding: 8px; max-height: 62vh; overflow-y: auto; }
.search-res .hint { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); font-weight: 600; padding: 10px 12px 6px; }
.search-res a { display: grid; gap: 3px; padding: 11px 12px; border-radius: 8px; text-decoration: none; }
.search-res a:hover, .search-res a:focus-visible { background: var(--accent-soft); }
.search-res b { font-weight: 600; font-size: 1rem; line-height: 1.25; }
.search-res span { font-size: 0.85rem; color: var(--muted); line-height: 1.35; }
.search-res .empty { padding: 22px 12px; color: var(--ink-2); font-size: 0.95rem; }

.progress { position: fixed; left: 0; top: env(safe-area-inset-top, 0px); height: 3px; width: 0; background: var(--accent); z-index: 30; }

/* ---------- Pie ---------- */
.site-foot { background: var(--surface); border-top: 1px solid var(--line); padding-block: 40px 30px; }
.foot-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 34px; }
.foot-grid h2 { font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.09em; font-weight: 700; margin-bottom: 12px; }
.foot-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.foot-grid a { font-size: 0.92rem; color: var(--ink-2); text-decoration: none; }
.foot-grid a:hover { color: var(--accent); text-decoration: underline; }
.foot-about { display: grid; gap: 12px; align-content: start; }
.foot-about p { font-size: 0.9rem; color: var(--muted); max-width: 36ch; line-height: 1.5; }
.foot-mail { font: 400 0.86rem var(--font-data); color: var(--ink-2); user-select: all; overflow-wrap: anywhere; }
.foot-base { margin-top: 30px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 0.8rem; color: var(--muted); display: flex; flex-wrap: wrap; gap: 6px 18px; justify-content: space-between; }

/* ---------- Adaptación ---------- */
@media (max-width: 980px) {
  .art-layout { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .art-aside { position: static; order: -1; margin-bottom: 26px; }
  .art-aside .ad-slot, .art-aside .ad-live { display: none; }
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  main { padding-block: 24px 44px; }
  .lead-grid, .two-col { grid-template-columns: minmax(0, 1fr); gap: 30px; }
  .search-btn span { display: none; }
  .search-btn { padding: 10px; }
  .tramo a { display: none; }
  .prose { font-size: 1.04rem; }
}
@media (max-width: 540px) {
  .cards, .cats { grid-template-columns: minmax(0, 1fr); }
  .row { grid-template-columns: 96px minmax(0, 1fr); gap: 13px; }
  .row p { display: none; }
  .foot-grid { grid-template-columns: 1fr; gap: 26px; }
  .logo-word { font-size: 1.2rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}