/* =========================================================================
   BachilleratoFacilito · Módulo PAU
   Usado por pau.html (webs recomendadas + estructura 2027), pau-estructura.html (detalle por asignatura) y
   pau-examenes.html (filtros + acordeones). Solo usa tokens --bf-* de
   futuro.css, así que funciona igual en modo claro y oscuro.
   ========================================================================= */

/* ---------- Tarjeta de sección a ancho completo (pau.html) ---------- */
.bf-pau-card--wide { grid-template-columns: 1fr; gap: 24px; }
.bf-pau-card--wide .bf-pau-card__body { align-self: stretch; }
.bf-pau-lead { max-width: 62ch; margin: 10px 0 0; color: var(--bf-muted); font-size: 0.95rem; line-height: 1.65; font-family: var(--bf-font-body); }

/* ---------- 01 · Webs recomendadas (desplegables por asignatura) ----------
   Para añadir una web: busca el <details class="pau-subject"> de la asignatura
   y añade un <li><a href="...">Nombre</a><span>Descripción</span></li> en su
   <ul class="bf-web-list">. Los enlaces abren en la misma pestaña. */
.bf-web-acc { display: grid; gap: 12px; }
.bf-web-body { padding: 6px 20px 20px; }
.bf-web-list { list-style: none; margin: 0; padding: 0 !important; display: grid; gap: 10px; }
.bf-web-list li {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--bf-border);
  border-left: 3px solid var(--sc);
  border-radius: 14px;
  background: var(--bf-surface);
  transition: border-color 0.25s var(--bf-ease), box-shadow 0.25s var(--bf-ease);
}
.bf-web-list li:hover { border-color: var(--bf-border-strong); box-shadow: var(--bf-glow); }
.bf-web-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--bf-ink);
  font-family: 'Fraunces', Georgia, serif;
  font-size: 1.1rem;
  font-weight: 500;
  line-height: 1.3;
  text-decoration: none;
  overflow-wrap: anywhere;
}
.bf-web-list a::after {
  content: '↗';
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--sc) 18%, transparent);
  color: var(--sc);
  font-family: var(--bf-font-body);
  font-size: 0.8rem;
  font-weight: 800;
  transition: transform 0.25s var(--bf-ease);
}
.bf-web-list a:hover, .bf-web-list a:focus-visible { color: var(--sc); outline: 0; }
.bf-web-list a:hover::after, .bf-web-list a:focus-visible::after { transform: rotate(45deg); }
.bf-web-list a:focus-visible { outline: 2px solid var(--sc); outline-offset: 4px; border-radius: 6px; }
.bf-web-list span {
  display: block;
  color: var(--bf-muted);
  font-size: 0.88rem;
  line-height: 1.55;
}
.bf-web-empty { margin: 0; color: var(--bf-muted); font-size: 0.92rem; font-style: italic; }

/* ---------- 02 · Estructura PAU 2027 ----------
   Cada tarjeta por asignatura es un enlace que abre pau-estructura.html
   en una pestaña nueva (?asignatura=<clave>). El contenido se edita en
   pau-estructura.js. */
.bf-est-overview { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin-bottom: 26px; }
.bf-est-tile { padding: 18px; border: 1px solid var(--bf-border-strong); border-radius: 14px; background: color-mix(in srgb, var(--bf-brand) 8%, transparent); }
.bf-est-tile h3 { margin: 0 0 8px; font-family: var(--bf-font-mono); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--bf-cyan); }
.bf-est-tile p { margin: 0; color: var(--bf-ink); font-size: 0.93rem; line-height: 1.6; }

.bf-est-subtitle { margin: 0 0 14px; font-family: var(--bf-font-mono); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--bf-muted); }
.bf-est-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 16px; }
.bf-est-card {
  --sc: var(--bf-cyan);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 20px 20px 22px;
  overflow: hidden;
  border: 1px solid var(--bf-border);
  border-radius: 16px;
  background: var(--bf-surface);
  transition: transform 0.3s var(--bf-ease), border-color 0.3s var(--bf-ease), box-shadow 0.3s var(--bf-ease);
}
.bf-est-card::before { content: ''; position: absolute; inset: 0 0 auto 0; height: 3px; background: var(--sc); opacity: 0.85; }
.bf-est-card:hover { transform: translateY(-3px); border-color: var(--bf-border-strong); box-shadow: var(--bf-glow); }
.bf-est-card__head { display: flex; align-items: center; gap: 12px; }
.bf-est-card__icon { display: grid; place-items: center; flex: none; width: 38px; height: 38px; border-radius: 10px; border: 1px solid color-mix(in srgb, var(--sc) 55%, transparent); background: color-mix(in srgb, var(--sc) 14%, transparent); color: var(--sc); font-size: 1.1rem; font-weight: 700; }
.bf-est-card__head h3 { margin: 0; font-family: 'Fraunces', Georgia, serif; font-size: 1.2rem; font-weight: 400; line-height: 1.15; color: var(--bf-ink); }
.bf-est-card__fields { display: grid; gap: 14px; margin: 0; }
.bf-est-card__fields dt { margin: 0 0 4px; font-size: 0.68rem; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; color: var(--bf-muted); }
.bf-est-card__fields dd { margin: 0; color: var(--bf-ink); font-size: 0.92rem; line-height: 1.6; }
.bf-est-card__fields dd.is-pending { padding: 10px 12px; border: 1px dashed var(--bf-border-strong); border-radius: 10px; color: var(--bf-muted); font-style: italic; }

/* Tarjetas de asignatura como enlace */
a.bf-est-card { color: inherit; text-decoration: none; }
a.bf-est-card:focus-visible { outline: 3px solid color-mix(in srgb, var(--sc) 45%, transparent); outline-offset: 3px; }
.bf-est-card__text { margin: 0; color: var(--bf-muted); font-size: 0.9rem; line-height: 1.55; }
.bf-est-card__cta { margin-top: auto; color: var(--sc); font-size: 0.82rem; font-weight: 800; letter-spacing: 0.04em; }
a.bf-est-card:hover .bf-est-card__cta, a.bf-est-card:focus-visible .bf-est-card__cta { text-decoration: underline; }

/* ---------- Página de estructura por asignatura (pau-estructura.html) ---------- */
.bf-ps-back { margin: 12px 0 0; font-size: 0.9rem; }
.bf-ps-back a { color: var(--bf-cyan); font-weight: 700; text-decoration: none; }
.bf-ps-back a:hover, .bf-ps-back a:focus-visible { text-decoration: underline; }
.bf-ps-kicker { display: flex; align-items: center; gap: 10px; margin: 22px 0 0; color: var(--bf-muted); font-family: var(--bf-font-mono); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; }
.bf-ps-icon { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; border: 1px solid color-mix(in srgb, var(--sc, #38bdf8) 55%, transparent); background: color-mix(in srgb, var(--sc, #38bdf8) 14%, transparent); color: var(--sc, #38bdf8); font-size: 1rem; font-weight: 700; letter-spacing: 0; text-transform: none; }
.bf-ps-stack { display: grid; gap: 22px; margin: 30px 0 28px; }
.bf-ps-card { grid-template-columns: 1fr; gap: 16px; }
.bf-ps-card::before { background: var(--sc, #38bdf8); }
.bf-ps-card .bf-pau-card__head { display: block; }
.bf-ps-bloques { list-style: none; counter-reset: bloque; padding: 0 !important; display: grid; gap: 10px; }
.bf-ps-bloques li { display: grid; gap: 3px; padding: 12px 14px; border: 1px solid var(--bf-border); border-radius: 12px; }
.bf-ps-bloques strong { font-family: 'Fraunces', Georgia, serif; font-weight: 400; font-size: 1.05rem; color: var(--bf-ink); }
.bf-ps-bloques span { color: var(--bf-muted); font-size: 0.9rem; line-height: 1.5; }
.bf-ps-cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 0 0 72px; }
.bf-ps-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }

/* ---------- Página de exámenes ---------- */
.pau-exams { max-width: 1100px; }
.pau-filters {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: 14px;
  align-items: end;
  margin: 22px 0 14px;
  padding: 20px;
  border: 1px solid var(--bf-border);
  border-radius: 18px;
  background: var(--bf-surface);
}
.pau-field { display: flex; flex-direction: column; gap: 6px; min-width: 0; color: var(--bf-muted); font-size: 0.72rem; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; }
.pau-field input, .pau-field select {
  width: 100%;
  box-sizing: border-box;
  min-height: 46px;
  padding: 11px 14px;
  border: 1px solid var(--bf-border-strong);
  border-radius: 12px;
  background-color: var(--bf-surface-solid);
  color: var(--bf-ink);
  font: 500 0.95rem/1.2 var(--bf-font-body);
  letter-spacing: 0;
  text-transform: none;
}
.pau-field input:focus-visible, .pau-field select:focus-visible { outline: 3px solid color-mix(in srgb, var(--bf-cyan) 35%, transparent); border-color: var(--bf-cyan); }

.pau-toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 16px; margin: 0 0 14px; }
.pau-count { margin: 0; color: var(--bf-muted); font-size: 0.9rem; }
.pau-toolbar__actions { display: flex; gap: 8px; }
.pau-link-btn { padding: 8px 14px; border: 1px solid var(--bf-border-strong); border-radius: 999px; background: transparent; color: var(--bf-ink); font: 700 0.8rem/1 var(--bf-font-body); cursor: pointer; transition: border-color 0.25s var(--bf-ease), color 0.25s var(--bf-ease); }
.pau-link-btn:hover, .pau-link-btn:focus-visible { border-color: var(--bf-cyan); color: var(--bf-green); outline: 0; }
.pau-link-btn[hidden] { display: none; }

/* Acordeones por asignatura */
.pau-results { display: grid; gap: 12px; }
.pau-subject { --sc: var(--bf-cyan); border: 1px solid var(--bf-border); border-radius: 16px; background: var(--bf-surface); overflow: hidden; transition: border-color 0.3s var(--bf-ease), box-shadow 0.3s var(--bf-ease); }
.pau-subject[open] { border-color: color-mix(in srgb, var(--sc) 45%, var(--bf-border)); box-shadow: var(--bf-glow); }
.pau-subject > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  list-style: none;
  cursor: pointer;
  border-left: 3px solid var(--sc);
}
.pau-subject > summary::-webkit-details-marker { display: none; }
.pau-subject > summary:focus-visible { outline: 3px solid color-mix(in srgb, var(--sc) 45%, transparent); outline-offset: -3px; }
.pau-subject__icon { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 11px; border: 1px solid color-mix(in srgb, var(--sc) 55%, transparent); background: color-mix(in srgb, var(--sc) 14%, transparent); color: var(--sc); font-size: 1.15rem; font-weight: 700; }
.pau-subject__name { font-family: 'Fraunces', Georgia, serif; font-size: clamp(1.1rem, 2.4vw, 1.4rem); line-height: 1.15; color: var(--bf-ink); }
.pau-subject__count { color: var(--bf-muted); font-size: 0.82rem; white-space: nowrap; }
.pau-subject__chevron { width: 10px; height: 10px; border-right: 2px solid var(--bf-muted); border-bottom: 2px solid var(--bf-muted); transform: rotate(45deg); transition: transform 0.3s var(--bf-ease); }
.pau-subject[open] .pau-subject__chevron { transform: rotate(-135deg); }

.pau-exam-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; padding: 4px 20px 20px; }
.pau-exam { display: flex; flex-direction: column; gap: 10px; padding: 16px; border: 1px solid var(--bf-border); border-radius: 14px; background: var(--bf-white); transition: transform 0.25s var(--bf-ease), border-color 0.25s var(--bf-ease); }
.pau-exam:hover { transform: translateY(-3px); border-color: var(--bf-border-strong); }
.pau-exam__top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.pau-exam__year { font-family: var(--bf-font-mono); font-size: 1.5rem; font-weight: 700; color: var(--bf-ink); }
.pau-badge { padding: 4px 10px; border-radius: 999px; font-size: 0.7rem; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; border: 1px solid var(--bf-border-strong); color: var(--bf-cyan); }
.pau-badge--ordinaria { color: var(--bf-green); }
.pau-badge--extraordinaria { color: var(--bf-brand-2); }
.pau-exam__title { margin: 0; color: var(--bf-muted); font-size: 0.85rem; line-height: 1.4; }
.pau-exam__tags { display: flex; flex-wrap: wrap; gap: 6px; }
.pau-exam__tags span { padding: 3px 8px; border-radius: 999px; background: color-mix(in srgb, var(--bf-brand) 12%, transparent); color: var(--bf-muted); font-size: 0.72rem; }
.pau-exam__actions { display: grid; gap: 8px; margin-top: auto; }
.pau-exam__btn { display: flex; align-items: center; justify-content: center; gap: 6px; min-height: 40px; padding: 9px 12px; border-radius: 10px; background: linear-gradient(135deg, var(--bf-brand), var(--bf-cyan)); color: #04101c; font-size: 0.85rem; font-weight: 800; text-decoration: none; transition: filter 0.25s var(--bf-ease), transform 0.25s var(--bf-ease); }
.pau-exam__btn:hover, .pau-exam__btn:focus-visible { filter: brightness(1.12); outline: 0; }
.pau-exam__btn--ghost { background: transparent; color: var(--bf-ink); border: 1px solid var(--bf-border-strong); }

.pau-empty { margin: 22px 0 0; padding: 22px; border: 1px dashed var(--bf-border-strong); border-radius: 16px; color: var(--bf-muted); text-align: center; line-height: 1.6; }
.pau-empty[hidden] { display: none; }
.pau-legal { margin: 24px 0 0; padding: 14px 16px; border-left: 3px solid var(--bf-green); color: var(--bf-muted); font-size: 0.88rem; line-height: 1.55; }

/* =========================================================================
   Simulador de nota PAU
   ========================================================================= */
.pau-calc-toggle{display:inline-flex;align-items:center;gap:10px;margin-top:18px;padding:13px 26px;border-radius:999px;background:linear-gradient(135deg,var(--bf-brand),var(--bf-cyan));color:#04101c;font:800 .95rem/1 var(--bf-font-body);border:none;cursor:pointer;transition:filter .2s var(--bf-ease),transform .2s var(--bf-ease);box-shadow:0 4px 20px color-mix(in srgb,var(--bf-brand) 40%,transparent)}
.pau-calc-toggle:hover{filter:brightness(1.12);transform:translateY(-2px)}
.pau-calc-toggle:focus-visible{outline:3px solid var(--bf-cyan);outline-offset:3px}
.pau-calc-toggle__icon{font-size:1.1rem;transition:transform .3s var(--bf-ease)}
.pau-calc-toggle[aria-expanded="true"] .pau-calc-toggle__icon{transform:rotate(45deg)}

.pau-calc-panel{display:grid;grid-template-rows:0fr;overflow:hidden;transition:grid-template-rows .35s var(--bf-ease)}
.pau-calc-panel[data-open="true"]{grid-template-rows:1fr}
.pau-calc-panel__inner{min-height:0}

.pau-calc{margin-top:18px;padding:22px 24px;border:1px solid var(--bf-border-strong);border-radius:20px;background:var(--bf-surface);display:grid;gap:22px}
.pau-calc__section-title{display:flex;align-items:center;gap:8px;margin:0 0 12px;font-family:var(--bf-font-mono);font-size:.7rem;font-weight:800;letter-spacing:.13em;text-transform:uppercase;color:var(--bf-cyan)}
.pau-calc__section-title::before{content:'';flex:none;width:18px;height:2px;background:var(--bf-cyan);border-radius:1px}

.pau-calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.pau-calc-grid--4{grid-template-columns:repeat(2,1fr)}
.pau-calc-field{display:flex;flex-direction:column;gap:6px}
.pau-calc-field label{font-size:.75rem;font-weight:700;color:var(--bf-muted);letter-spacing:.04em;line-height:1.3}
.pau-calc-field input,.pau-calc-field select{width:100%;box-sizing:border-box;min-height:44px;padding:10px 13px;border:1px solid var(--bf-border-strong);border-radius:12px;background:var(--bf-surface-solid,var(--bf-surface));color:var(--bf-ink);font:500 .95rem/1.2 var(--bf-font-body);transition:border-color .18s var(--bf-ease)}
.pau-calc-field input:focus-visible,.pau-calc-field select:focus-visible{outline:none;border-color:var(--bf-cyan);box-shadow:0 0 0 3px color-mix(in srgb,var(--bf-cyan) 25%,transparent)}
.pau-calc-field input.is-invalid{border-color:color-mix(in srgb,#f87171 70%,transparent);background:color-mix(in srgb,#f87171 7%,transparent)}
.pau-calc-field input.is-invalid:focus-visible{box-shadow:0 0 0 3px color-mix(in srgb,#f87171 25%,transparent)}

.pau-esp-row{display:grid;grid-template-columns:1fr auto auto;gap:10px;align-items:end}
.pau-esp-row .pau-calc-field:last-child{min-width:90px}

.pau-calc-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.pau-calc-btn{padding:12px 26px;border-radius:999px;background:linear-gradient(135deg,var(--bf-brand),var(--bf-cyan));color:#04101c;font:800 .9rem/1 var(--bf-font-body);border:none;cursor:pointer;transition:filter .18s var(--bf-ease),transform .18s var(--bf-ease)}
.pau-calc-btn:hover{filter:brightness(1.1);transform:translateY(-1px)}
.pau-calc-btn--ghost{background:transparent;color:var(--bf-muted);border:1px solid var(--bf-border-strong)}
.pau-calc-btn--ghost:hover{color:var(--bf-ink);border-color:var(--bf-ink);filter:none;transform:none}

.pau-calc-result{display:none;padding:20px 22px;border-radius:16px;border:1px solid var(--bf-border-strong);background:color-mix(in srgb,var(--bf-brand) 6%,transparent)}
.pau-calc-result.is-visible{display:grid;gap:16px}
.pau-calc-result__scores{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.pau-result-score{padding:16px 18px;border-radius:14px;border:1px solid var(--bf-border);background:var(--bf-surface);display:flex;flex-direction:column;gap:6px}
.pau-result-score__label{font-size:.7rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--bf-muted)}
.pau-result-score__val{font-family:var(--bf-font-mono);font-size:2rem;font-weight:700;color:var(--bf-ink);line-height:1}
.pau-result-score--main .pau-result-score__val{font-size:2.6rem;background:linear-gradient(135deg,var(--bf-brand),var(--bf-cyan));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.pau-result-score__badge{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:999px;font-size:.7rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;width:max-content}
.pau-result-score__badge--ok{background:color-mix(in srgb,var(--bf-green,#34d399) 18%,transparent);color:var(--bf-green,#34d399)}
.pau-result-score__badge--fail{background:color-mix(in srgb,#f87171 18%,transparent);color:#f87171}
.pau-calc-result__breakdown{padding:14px 16px;border-radius:12px;border:1px solid var(--bf-border);background:var(--bf-surface);font-size:.87rem;color:var(--bf-muted);line-height:1.7}
.pau-calc-result__breakdown strong{color:var(--bf-ink)}
.pau-calc-result__warning{padding:10px 14px;border-radius:10px;background:color-mix(in srgb,#f87171 12%,transparent);border:1px solid color-mix(in srgb,#f87171 35%,transparent);color:#f87171;font-size:.87rem;font-weight:600}
.pau-calc-result__warning[hidden]{display:none}

@media(max-width:600px){
  .pau-calc-grid,.pau-calc-grid--4{grid-template-columns:1fr}
  .pau-calc-result__scores{grid-template-columns:1fr}
  .pau-esp-row{grid-template-columns:1fr 1fr}
  .pau-esp-row .pau-calc-field:first-child{grid-column:1/-1}
  .pau-calc{padding:16px}
}

/* ---------- Hero CTAs ---------- */
.pau-hero-ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.pau-btn-ghost{display:inline-flex;align-items:center;gap:6px;padding:11px 24px;border-radius:999px;border:1px solid var(--bf-border-strong);background:transparent;color:var(--bf-ink);font:700 0.95rem/1 var(--bf-font-body);text-decoration:none;cursor:pointer;transition:border-color 0.2s var(--bf-ease),color 0.2s var(--bf-ease)}
.pau-btn-ghost:hover,.pau-btn-ghost:focus-visible{border-color:var(--bf-cyan);color:var(--bf-cyan);outline:0}

/* ---------- Fechas: nota oficial ---------- */
.pau-dates-note{margin:14px 0 0;font-size:0.88rem;color:var(--bf-muted)}
.pau-dates-note a{color:var(--bf-cyan);font-weight:700;text-decoration:none}
.pau-dates-note a:hover{text-decoration:underline}

/* ---------- Fases ---------- */
.pau-phases{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:20px}
.pau-phase-card{padding:20px;border:1px solid var(--bf-border);border-radius:16px;background:var(--bf-surface)}
.pau-phase-card--general{border-top:3px solid var(--bf-brand)}
.pau-phase-card--especifica{border-top:3px solid var(--bf-cyan)}
.pau-phase-card__head{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.pau-phase-badge{margin:0;padding:4px 12px;border-radius:999px;background:color-mix(in srgb,var(--bf-brand) 18%,transparent);color:var(--bf-brand);font-size:0.72rem;font-weight:800;letter-spacing:0.08em;text-transform:uppercase;font-family:inherit;line-height:1}
.pau-phase-badge--esp{background:color-mix(in srgb,var(--bf-cyan) 18%,transparent);color:var(--bf-cyan)}
.pau-phase-tag{font-size:0.78rem;color:var(--bf-muted)}
.pau-phase-card p{margin:0 0 10px;font-size:0.93rem;line-height:1.65;color:var(--bf-ink)}
.pau-phase-card p:last-child{margin-bottom:0}
.pau-phase-card strong{color:var(--bf-ink)}

/* ---------- Puntuación ---------- */
.pau-scoring{margin:20px 0 0;padding:18px 20px;border:1px solid var(--bf-border-strong);border-radius:16px;background:color-mix(in srgb,var(--bf-brand) 6%,transparent)}
.pau-scoring h3{margin:0 0 14px;font-family:var(--bf-font-mono);font-size:0.72rem;font-weight:700;letter-spacing:0.14em;text-transform:uppercase;color:var(--bf-cyan)}
.pau-scoring__formulas{display:grid;gap:12px}
.pau-formula{display:grid;gap:4px;padding:12px 14px;border:1px solid var(--bf-border);border-radius:12px;background:var(--bf-surface)}
.pau-formula__label{margin:0;font-size:0.72rem;font-weight:800;letter-spacing:0.1em;text-transform:uppercase;color:var(--bf-muted);font-family:inherit;line-height:1.3}
.pau-formula__eq{font-family:var(--bf-font-mono);font-size:0.95rem;font-weight:700;color:var(--bf-ink);background:none;border:none;padding:0}
.pau-formula__note{font-size:0.85rem;color:var(--bf-muted);line-height:1.5}

/* ---------- Consejos de estudio ---------- */
.pau-tips-list{list-style:none;margin:0 0 20px;padding:0;display:grid;gap:12px}
.pau-tip{display:flex;gap:16px;padding:18px 20px;border:1px solid var(--bf-border);border-radius:14px;background:var(--bf-surface);align-items:flex-start}
.pau-tip__num{flex:none;display:grid;place-items:center;min-width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--bf-brand),var(--bf-cyan));color:#04101c;font-family:var(--bf-font-mono);font-size:0.72rem;font-weight:800}
.pau-tip div{min-width:0}
.pau-tip strong{display:block;margin-bottom:5px;font-size:0.97rem;color:var(--bf-ink)}
.pau-tip p{margin:0;font-size:0.9rem;color:var(--bf-muted);line-height:1.6}

/* ---------- Inline CTA ---------- */
.pau-cta-inline{display:flex;flex-wrap:wrap;align-items:center;gap:14px;padding:18px 20px;border:1px dashed var(--bf-border-strong);border-radius:14px;background:color-mix(in srgb,var(--bf-brand) 5%,transparent)}
.pau-cta-inline p{margin:0;color:var(--bf-muted);font-size:0.93rem}

/* ---------- FAQ ---------- */
.pau-faq{display:grid;gap:8px}
.pau-faq__item{border:1px solid var(--bf-border);border-radius:14px;background:var(--bf-surface);overflow:hidden;transition:border-color 0.25s var(--bf-ease)}
.pau-faq__item[open]{border-color:var(--bf-border-strong)}
.pau-faq__item>summary{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 20px;list-style:none;cursor:pointer;font-weight:600;font-size:0.97rem;color:var(--bf-ink);line-height:1.4}
.pau-faq__item>summary::-webkit-details-marker{display:none}
.pau-faq__item>summary::after{content:'';flex:none;width:10px;height:10px;border-right:2px solid var(--bf-muted);border-bottom:2px solid var(--bf-muted);transform:rotate(45deg);transition:transform 0.25s var(--bf-ease);margin-top:-4px}
.pau-faq__item[open]>summary::after{transform:rotate(-135deg);margin-top:2px}
.pau-faq__item>summary:focus-visible{outline:3px solid color-mix(in srgb,var(--bf-cyan) 45%,transparent);outline-offset:-3px}
.pau-faq__item>p{margin:0;padding:0 20px 18px;color:var(--bf-muted);font-size:0.93rem;line-height:1.65}
.pau-faq__item>p a{color:var(--bf-cyan);font-weight:700;text-decoration:none}
.pau-faq__item>p a:hover{text-decoration:underline}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .pau-filters { grid-template-columns: 1fr 1fr; }
  .pau-field--search { grid-column: 1 / -1; }
  .pau-phases { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .pau-filters { grid-template-columns: 1fr; padding: 16px; }
  .pau-subject > summary { grid-template-columns: auto minmax(0, 1fr) auto; padding: 14px 16px; }
  .pau-subject__count { display: none; }
  .pau-exam-grid { padding: 4px 14px 16px; grid-template-columns: 1fr; }
  .bf-est-grid { grid-template-columns: 1fr; }
  .pau-tip { flex-direction: column; gap: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  .bf-est-card, .bf-web-list a, .bf-web-list a::after, .pau-exam, .pau-subject__chevron { transition: none; }
}