/* Ayuda pública de NUBLAR (ayuda.ibaica.com): complementos sobre el sistema de diseño (nublar-tokens.css + nublar.css) */
@font-face { font-family: 'Roobert'; src: url('/fonts/Roobert-Light.woff2') format('woff2'); font-weight: 300; font-style: normal; font-display: swap; }
@font-face { font-family: 'Roobert'; src: url('/fonts/Roobert-Regular.woff2') format('woff2'); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: 'Roobert'; src: url('/fonts/Roobert-Bold.woff2') format('woff2'); font-weight: 700; font-style: normal; font-display: swap; }

.ay-skip { position: absolute; left: -999px; top: 0; z-index: 100; padding: var(--nb-space-2) var(--nb-space-4); background: var(--nb-surface); color: var(--nb-text); border-radius: var(--nb-radius-sm); }
.ay-skip:focus { left: var(--nb-space-3); top: var(--nb-space-3); }

.ay-top { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: var(--nb-space-4); padding: var(--nb-space-3) var(--nb-space-6); background: color-mix(in srgb, var(--nb-surface) 82%, transparent); backdrop-filter: blur(14px); border-bottom: 1px solid var(--nb-border-subtle); }
.ay-brand { display: flex; align-items: center; gap: var(--nb-space-3); color: var(--nb-text); text-decoration: none; flex: none; }
.ay-brand img { display: block; height: 28px; width: auto; }
.ay-brand-tag { color: var(--nb-text-3); font-size: var(--nb-text-sm); padding-left: var(--nb-space-3); border-left: 1px solid var(--nb-border); }
.ay-search { flex: 1 1 320px; max-width: 520px; margin-left: auto; }
.ay-top .nb-btn--primary { flex: none; }

.ay-wrap { max-width: 1240px; margin: 0 auto; padding: var(--nb-space-6) var(--nb-space-6) var(--nb-space-8); display: grid; gap: var(--nb-space-5); }
.ay-foot { display: flex; flex-wrap: wrap; gap: var(--nb-space-2) var(--nb-space-4); justify-content: center; padding: var(--nb-space-6); color: var(--nb-text-3); font-size: var(--nb-text-sm); }
.ay-foot a { color: var(--nb-text-2); }
.ay-hero-more { margin-top: var(--nb-space-3); font-size: var(--nb-text-sm); color: var(--nb-text-3); }
.ay-hero-more a { color: var(--nb-text-2); text-decoration: underline; }

.ay-hero { padding: var(--nb-space-6) 0 var(--nb-space-2); max-width: 64ch; }
.ay-hero p { margin: var(--nb-space-2) 0 0; color: var(--nb-text-2); font-size: var(--nb-text-md); }
.ay-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: var(--nb-space-4); }
.ay-modcard { display: block; text-decoration: none; color: var(--nb-text); transition: box-shadow var(--nb-dur) var(--nb-ease), transform var(--nb-dur) var(--nb-ease); }
.ay-modcard:hover { box-shadow: var(--nb-shadow-md); transform: translateY(-2px); }
.ay-modcard.is-soon { opacity: .7; }
.ay-modico { display: grid; place-items: center; width: 40px; height: 40px; border-radius: var(--nb-radius-sm); background: var(--nb-accent-soft); color: var(--nb-accent-strong); font-size: 20px; margin-bottom: var(--nb-space-3); }
.ay-modcard h3 { margin: 0; font-size: var(--nb-text-lg); font-weight: var(--nb-weight-bold); display: flex; gap: var(--nb-space-2); align-items: center; flex-wrap: wrap; }
.ay-modcard p { margin: var(--nb-space-1) 0 0; color: var(--nb-text-2); font-size: var(--nb-text-base); }

.ay-nav-pro { margin-left: auto; }
.ay-main { min-width: 0; display: grid; gap: var(--nb-space-5); align-content: start; }
.ay-intro { display: flex; flex-direction: row; gap: var(--nb-space-4); align-items: flex-start; padding: var(--nb-space-5) var(--nb-space-6); }
.ay-intro-ico { flex: none; width: 44px; height: 44px; border-radius: var(--nb-radius-sm); display: grid; place-items: center; font-size: 22px; background: var(--nb-accent-soft); color: var(--nb-accent-strong); }
.ay-intro h1 { margin: 0; font-size: var(--nb-text-2xl, 1.75rem); font-weight: var(--nb-weight-bold); letter-spacing: var(--nb-tracking-tight); display: flex; gap: var(--nb-space-3); align-items: center; flex-wrap: wrap; }
.ay-intro p { margin: var(--nb-space-1) 0 0; color: var(--nb-text-2); }
.ay-toc { display: flex; flex-wrap: wrap; gap: var(--nb-space-2); margin-top: var(--nb-space-4); }
.ay-toc a { display: inline-flex; padding: 6px 12px; border-radius: var(--nb-radius-pill); background: var(--nb-surface); border: 1px solid var(--nb-border); color: var(--nb-text); font-size: var(--nb-text-sm); text-decoration: none; }
.ay-toc a:hover { border-color: var(--nb-accent); color: var(--nb-accent-strong); }

.ay-opt { scroll-margin-top: 90px; }
.ay-opt.is-target { box-shadow: 0 0 0 2px var(--nb-accent); }
.ay-opt-head { display: flex; gap: var(--nb-space-3); align-items: flex-start; justify-content: space-between; flex-wrap: wrap; }
.ay-opt-head h2 { margin: 0; font-size: var(--nb-text-lg); font-weight: var(--nb-weight-bold); display: flex; gap: var(--nb-space-3); align-items: center; flex-wrap: wrap; }
.ay-lead { margin: var(--nb-space-2) 0 0; color: var(--nb-text-2); max-width: 70ch; }
.ay-body { display: grid; gap: var(--nb-space-3); max-width: 76ch; line-height: var(--nb-leading-snug); }
.ay-body p { margin: 0; }
.ay-h { margin: var(--nb-space-3) 0 0; font-size: var(--nb-text-md); font-weight: var(--nb-weight-bold); }
.ay-list, .ay-steps { margin: 0; padding-left: 1.3em; display: grid; gap: var(--nb-space-2); }
.ay-pro { display: inline-flex; gap: 4px; align-items: center; white-space: nowrap; }
.ay-pro--mixto { background: var(--nb-surface-3); color: var(--nb-text-2); }
.ay-probox { display: flex; gap: var(--nb-space-3); align-items: flex-start; padding: var(--nb-space-3) var(--nb-space-4); border-radius: var(--nb-radius-sm); background: var(--nb-accent-soft); border-left: 3px solid var(--nb-accent); }
.ay-nota { margin: 0; }
.ay-tablewrap { overflow-x: auto; }
.ay-table { width: 100%; border-collapse: collapse; font-size: var(--nb-text-base); }
.ay-table th, .ay-table td { padding: var(--nb-space-2) var(--nb-space-3); border-bottom: 1px solid var(--nb-border-subtle); text-align: left; vertical-align: top; }
.ay-table thead th { font-size: var(--nb-text-sm); color: var(--nb-text-2); border-bottom: 1px solid var(--nb-border); }
.ay-table tbody th { font-weight: var(--nb-weight-medium); white-space: nowrap; }
.ay-figs { display: grid; gap: var(--nb-space-4); margin-top: var(--nb-space-4); }
.ay-fig { margin: 0; }
.ay-fig img { display: block; max-width: 100%; height: auto; border: 1px solid var(--nb-border); border-radius: var(--nb-radius-md); box-shadow: var(--nb-shadow-sm); }
.ay-fig figcaption { margin-top: var(--nb-space-2); font-size: var(--nb-text-sm); color: var(--nb-text-3); }

.ay-results { display: grid; gap: var(--nb-space-3); }
.ay-res { display: block; padding: var(--nb-space-4); border-radius: var(--nb-radius-md); background: var(--nb-surface); border: 1px solid var(--nb-border); color: var(--nb-text); text-decoration: none; }
.ay-res:hover { border-color: var(--nb-accent); }
.ay-res strong { display: flex; gap: var(--nb-space-2); align-items: center; flex-wrap: wrap; }
.ay-res small { display: block; color: var(--nb-text-3); margin-top: 2px; }
.ay-res p { margin: var(--nb-space-2) 0 0; color: var(--nb-text-2); font-size: var(--nb-text-sm); }
.ay-res mark { background: var(--nb-accent-soft); color: inherit; border-radius: 3px; }

@media (max-width: 760px) {
  .ay-top { flex-wrap: wrap; padding: var(--nb-space-3) var(--nb-space-4); }
  .ay-brand-tag { display: none; }
  .ay-search { order: 3; flex-basis: 100%; max-width: none; margin-left: 0; }
  .ay-top .nb-btn--primary { margin-left: auto; }
  .ay-wrap { padding: var(--nb-space-4); }
  .ay-intro { padding: var(--nb-space-4); }
}
@media (prefers-reduced-motion: reduce) { .ay-modcard { transition: none; } .ay-modcard:hover { transform: none; } }

/* Destacados (factura electrónica y Verifactu) y novedades */
.ay-feat-badge { display: inline-flex; gap: 4px; align-items: center; white-space: nowrap; background: var(--nb-warning-bg, #fff4d6); color: var(--nb-warning-fg, #7a5200); }
.ay-new-badge { white-space: nowrap; }
.ay-opt.is-feat { border: 2px solid var(--nb-accent); background: linear-gradient(180deg, var(--nb-accent-soft-2, var(--nb-accent-soft)), var(--nb-surface) 38%); box-shadow: var(--nb-shadow-md); }
.ay-opt-head h1, .ay-opt-head h2 { margin: 0; font-size: var(--nb-text-lg); font-weight: var(--nb-weight-bold); display: flex; gap: var(--nb-space-3); align-items: center; flex-wrap: wrap; }
.ay-opt-head h1 { font-size: var(--nb-text-2xl, 1.75rem); letter-spacing: var(--nb-tracking-tight); }
.ay-opt-head h2 a { color: inherit; text-decoration: none; }
.ay-opt-head h2 a:hover { text-decoration: underline; }
.ay-toc a.is-feat { border-color: var(--nb-accent); background: var(--nb-accent-soft); color: var(--nb-accent-strong); font-weight: var(--nb-weight-medium); }
.ay-toc a.is-feat i { margin-right: 4px; font-size: 12px; }
.ay-navfeat i { color: var(--nb-warning-solid, #d9a400) !important; }

.ay-featband { display: grid; gap: var(--nb-space-3); }
.ay-featband h2 { margin: 0; font-size: var(--nb-text-lg); font-weight: var(--nb-weight-bold); display: flex; gap: var(--nb-space-2); align-items: center; }
.ay-featband h2 i { color: var(--nb-warning-solid, #d9a400); }
.ay-featgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--nb-space-4); }
.ay-featcard { display: grid; gap: var(--nb-space-2); align-content: start; padding: var(--nb-space-5); border-radius: var(--nb-radius-md); border: 2px solid var(--nb-accent); background: linear-gradient(180deg, var(--nb-accent-soft-2, var(--nb-accent-soft)), var(--nb-surface) 70%); box-shadow: var(--nb-shadow-md); color: var(--nb-text); text-decoration: none; transition: transform var(--nb-dur) var(--nb-ease), box-shadow var(--nb-dur) var(--nb-ease); }
.ay-featcard:hover { transform: translateY(-2px); box-shadow: var(--nb-shadow-lg); }
.ay-featico { display: grid; place-items: center; width: 44px; height: 44px; border-radius: var(--nb-radius-sm); background: var(--nb-accent); color: var(--nb-text-on-accent, #002825); font-size: 22px; }
.ay-featcard h3 { margin: var(--nb-space-2) 0 0; font-size: var(--nb-text-xl); font-weight: var(--nb-weight-bold); letter-spacing: var(--nb-tracking-tight); }
.ay-featcard p { margin: 0; color: var(--nb-text-2); }
.ay-featgo { margin-top: var(--nb-space-2); font-weight: var(--nb-weight-medium); color: var(--nb-accent-strong); display: inline-flex; gap: 6px; align-items: center; }

.ay-more h2 { margin: 0 0 var(--nb-space-3); font-size: var(--nb-text-lg); font-weight: var(--nb-weight-bold); }
.ay-morelist { margin: 0 0 var(--nb-space-4); padding: 0; list-style: none; display: grid; gap: var(--nb-space-2); }
.ay-morelist li { display: flex; gap: var(--nb-space-2); align-items: center; flex-wrap: wrap; }
.ay-morelist a { color: var(--nb-text); }
.ay-morelist a:hover { color: var(--nb-accent-strong); }
@media (prefers-reduced-motion: reduce) { .ay-featcard { transition: none; } .ay-featcard:hover { transform: none; } }

/* Portada: separación clara entre lo destacado y los módulos, con su minititulo */
.ay-modsec { margin-top: var(--nb-space-8, 48px); padding-top: var(--nb-space-6); border-top: 1px solid var(--nb-border); display: grid; gap: var(--nb-space-4); }
.ay-sechead h2 { margin: 0; font-size: var(--nb-text-lg); font-weight: var(--nb-weight-bold); display: flex; gap: var(--nb-space-2); align-items: center; }
.ay-sechead h2 i { color: var(--nb-accent-strong); }
.ay-sechead p { margin: var(--nb-space-1) 0 0; color: var(--nb-text-2); }

/* Selector de tema (automático, claro, oscuro) y logo que lo sigue */
.ay-brand .ay-logo-dark { display: none; }
@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] .ay-brand .ay-logo-light { display: none; }
  :root[data-theme="auto"] .ay-brand .ay-logo-dark { display: block; }
}
:root[data-theme="dark"] .ay-brand .ay-logo-light { display: none; }
:root[data-theme="dark"] .ay-brand .ay-logo-dark { display: block; }
:root[data-theme="light"] .ay-brand .ay-logo-light { display: block; }
:root[data-theme="light"] .ay-brand .ay-logo-dark { display: none; }
.ay-theme { flex: none; display: inline-flex; padding: 3px; gap: 2px; border: 1px solid var(--nb-border); border-radius: var(--nb-radius-pill, 999px); background: var(--nb-surface); }
.ay-theme button { display: grid; place-items: center; width: 30px; height: 30px; border: 0; border-radius: var(--nb-radius-pill, 999px); background: transparent; color: var(--nb-text-2); font-size: 17px; cursor: pointer; }
.ay-theme button:hover { color: var(--nb-text); background: var(--nb-accent-soft); }
.ay-theme button[aria-pressed="true"] { background: var(--nb-accent); color: var(--nb-text-on-accent, #fff); }
.ay-theme button:focus-visible { outline: 2px solid var(--nb-accent); outline-offset: 2px; }
@media (max-width: 720px) { .ay-theme { margin-left: auto; } .ay-top .nb-btn--primary { margin-left: 0; } }