:root {
  --orange: #FF9900;
  --dark-bg: #1A1A1A;
  --card-bg: #2D2D2D;
  --nav-bg: #232F3E;
  --footer-bg: #0F0F0F;
  --green: #66BB6A;
  --red: #FF6B5E;
  --text: #FFFFFF;
  --text-muted: #A8A8A8;
  --border: #808080;
  --on-orange: #1A1A1A;
  --text-soft: #CCC;
  --text-bright: #DDD;
  --text-dim: #AAA;
  --warn: #FF7043;
  --focus-contrast: #FFF;
  --hover-bg: #363636;
  --opt-selected-bg: #2A2410;
  --opt-correct-bg: #1E3A1E;
  --opt-wrong-bg: #3A1E1E;
  --expl-bg: #1A2A1A;
  --skeleton: #3A3A3A;
  --cell-bg: #3A3A3A;
  --cell-correct-bg: #1F3A22;
  --cell-correct-fg: #7FD083;
  --cell-wrong-bg: #3D2020;
  --cell-wrong-fg: #EF8A82;
  --footer-border: #1F1F1F;
  --paused-bg: #2A1A00;
  --nav-hover: #31435A;
  --badge-bg: rgba(255, 255, 255, 0.06);
  --badge-border: rgba(255, 255, 255, 0.1);
  --hero-bg: linear-gradient(160deg, rgba(255, 153, 0, 0.10), rgba(35, 47, 62, 0.55));
  --overlay-bg: rgba(0, 0, 0, 0.85);
  --page-bg: #111;
  --page-bg-md: #0D0D0D;
  --page-bg-lg: #080808;
  --page-glow: rgba(35, 47, 62, 0.9);
  --page-bg-xl: #0B0D10;
  color-scheme: dark;
}

/* Tema claro (P2-25): se aplica siguiendo al sistema (si no se forzó el oscuro) o
   forzado con data-theme="light" en <html>. Los dos bloques deben quedar idénticos
   (tests/theme.test.js lo verifica). */
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --orange: #9A5600;
    --dark-bg: #F4F5F7;
    --card-bg: #FFFFFF;
    --nav-bg: #E6EAF0;
    --footer-bg: #E9EAEC;
    --green: #1B6E2A;
    --red: #B3261E;
    --text: #1A1A1A;
    --text-muted: #4A4A4A;
    --border: #808080;
    --on-orange: #FFFFFF;
    --text-soft: #333;
    --text-bright: #222;
    --text-dim: #444;
    --warn: #B0360C;
    --focus-contrast: #1A1A1A;
    --hover-bg: #EEF1F5;
    --opt-selected-bg: #FFF1D6;
    --opt-correct-bg: #DFF2E0;
    --opt-wrong-bg: #FBE3E1;
    --expl-bg: #E8F5E9;
    --skeleton: #D0D4DA;
    --cell-bg: #E4E6EA;
    --cell-correct-bg: #DDF1DE;
    --cell-correct-fg: #1B5E20;
    --cell-wrong-bg: #FBE0DE;
    --cell-wrong-fg: #9C1C14;
    --footer-border: #C9CDD3;
    --paused-bg: #FFF1D6;
    --nav-hover: #CBD5E3;
    --badge-bg: rgba(0, 0, 0, 0.05);
    --badge-border: rgba(0, 0, 0, 0.12);
    --hero-bg: linear-gradient(160deg, rgba(154, 86, 0, 0.10), rgba(230, 234, 240, 0.8));
    --overlay-bg: rgba(255, 255, 255, 0.92);
    --page-bg: #DDE0E5;
    --page-bg-md: #D6DAE0;
    --page-bg-lg: #D0D4DA;
    --page-glow: rgba(230, 234, 240, 0.9);
    --page-bg-xl: #D6DAE0;
    color-scheme: light;
  }
}
:root[data-theme="light"] {
  --orange: #9A5600;
  --dark-bg: #F4F5F7;
  --card-bg: #FFFFFF;
  --nav-bg: #E6EAF0;
  --footer-bg: #E9EAEC;
  --green: #1B6E2A;
  --red: #B3261E;
  --text: #1A1A1A;
  --text-muted: #4A4A4A;
  --border: #808080;
  --on-orange: #FFFFFF;
  --text-soft: #333;
  --text-bright: #222;
  --text-dim: #444;
  --warn: #B0360C;
  --focus-contrast: #1A1A1A;
  --hover-bg: #EEF1F5;
  --opt-selected-bg: #FFF1D6;
  --opt-correct-bg: #DFF2E0;
  --opt-wrong-bg: #FBE3E1;
  --expl-bg: #E8F5E9;
  --skeleton: #D0D4DA;
  --cell-bg: #E4E6EA;
  --cell-correct-bg: #DDF1DE;
  --cell-correct-fg: #1B5E20;
  --cell-wrong-bg: #FBE0DE;
  --cell-wrong-fg: #9C1C14;
  --footer-border: #C9CDD3;
  --paused-bg: #FFF1D6;
  --nav-hover: #CBD5E3;
  --badge-bg: rgba(0, 0, 0, 0.05);
  --badge-border: rgba(0, 0, 0, 0.12);
  --hero-bg: linear-gradient(160deg, rgba(154, 86, 0, 0.10), rgba(230, 234, 240, 0.8));
  --overlay-bg: rgba(255, 255, 255, 0.92);
  --page-bg: #DDE0E5;
  --page-bg-md: #D6DAE0;
  --page-bg-lg: #D0D4DA;
  --page-glow: rgba(230, 234, 240, 0.9);
  --page-bg-xl: #D6DAE0;
  color-scheme: light;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

/* ─── ACCESIBILIDAD ─── */
.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;
}
:focus-visible { outline: 2px solid var(--orange); outline-offset: 2px; }
/* Los encabezados de pantalla reciben el foco por script (tabindex="-1") solo
   para guiar al lector de pantalla; no son interactivos, así que sin anillo. */
.screen h2[tabindex="-1"]:focus { outline: none; }

html { font-size: 100%; }

body {
  background: var(--page-bg);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
  min-height: 100dvh;
  font-family: 'Segoe UI', Arial, sans-serif;
  padding: 0;
}

/* ─── APP SHELL (mobile-first) ───
   Scrollea el documento, no .content (P1-QA-07): el timer total y los controles
   del examen quedan sticky y el overlay de pausa es fixed, así se ven siempre.
   100dvh descuenta las barras del navegador móvil (100vh queda de respaldo). */
.app {
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--dark-bg);
  display: flex;
  flex-direction: column;
  position: relative;
  /* clip y no hidden: hidden lo vuelve contenedor de scroll y rompe los sticky. */
  overflow: clip;
}
/* Mientras está en pausa no se puede scrollear lo de atrás. */
html:has(.paused-overlay.show) { overflow: hidden; }

/* ─── HEADER ─── */
.header {
  background: var(--orange);
  padding: 0.75rem 1.25rem 1.5rem;
  border-radius: 0 0 1.75rem 1.75rem;
  text-align: center;
  flex-shrink: 0;
}
/* Logo (P2-UX-20): diploma con sello dentro de un anillo. */
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 3.5rem;
  height: 3.5rem;
  margin-bottom: 0.375rem;
  border: 2px solid var(--on-orange);
  border-radius: 50%;
  color: var(--on-orange);
}
.header .subtitle:empty { display: none; }
.header .badge:empty { display: none; }
.header .badge { margin-top: 0.5rem; }
.header h1 { color: var(--on-orange); font-size: 1.375rem; font-weight: 800; letter-spacing: 0.5px; }
.header .subtitle { color: var(--on-orange); font-size: 0.75rem; font-weight: 600; margin: 0.25rem 0 0.625rem; }
.badge {
  display: inline-block;
  background: var(--nav-bg);
  color: var(--orange);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.1875rem 0.875rem;
  border-radius: 1.25rem;
  letter-spacing: 1px;
}

/* ─── TOTAL TIMER BAR ─── */
.total-timer-bar {
  background: var(--nav-bg);
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  z-index: 20;
}
.total-timer-label { color: var(--text-soft); font-size: 0.75rem; font-weight: 600; letter-spacing: 1px; }
.total-timer-value { color: var(--orange); font-size: 0.875rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.total-timer-value.warning { color: var(--warn); }
.total-progress { flex: 1; margin: 0 0.75rem; height: 0.25rem; background: #7A7A7A; border-radius: 2px; }
.total-progress-fill { width: 100%; height: 0.25rem; background: var(--orange); border-radius: 2px; transition: width 1s linear; }
.total-progress-fill.warning { background: var(--warn); }
.fin-top { margin-left: 0.75rem; min-height: 2.75rem; padding: 0 0.75rem; background: transparent; border: 1.5px solid var(--orange); color: var(--orange); border-radius: 0.5rem; font-size: 0.75rem; font-weight: 700; cursor: pointer; -webkit-tap-highlight-color: transparent; }
.fin-top:active { background: var(--orange); color: var(--on-orange); }

/* ─── CONTENT (crece con su contenido; el que scrollea es el documento) ─── */
.content {
  flex: 1;
  padding: 0.875rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

/* ─── SCREEN VISIBILITY ─── */
.screen { display: none; width: 100%; }
.screen.active { display: flex; flex-direction: column; gap: 0.625rem; }

/* ─── LEVEL SELECT ─── */
.welcome-card {
  background: var(--card-bg);
  border-radius: 0.75rem;
  border-left: 0.3125rem solid var(--orange);
  padding: 1rem;
}
.welcome-card h2 { color: var(--orange); font-size: 0.875rem; font-weight: 700; letter-spacing: 1px; margin-bottom: 0.5rem; }
.welcome-card p { color: var(--text-muted); font-size: 0.75rem; line-height: 1.5; }
.welcome-card p strong { color: var(--text); }

/* ─── Aviso de mantenimiento (P2-ACC-05) ─── */
.mw-domain { white-space: nowrap; }
.mw-card { position: relative; }
.mw-card-head { display: flex; align-items: center; gap: 0.875rem; padding-right: 2.75rem; }
.mw-date { flex-shrink: 0; width: 3.75rem; display: grid; justify-items: center; border: 2px solid var(--orange); border-radius: 0.5rem; overflow: hidden; text-align: center; }
.mw-date-dow { width: 100%; background: var(--orange); color: var(--on-orange); font-size: 0.75rem; font-weight: 800; letter-spacing: 0.04em; padding: 0.125rem 0; }
.mw-date-day { color: var(--text); font-size: 1.75rem; font-weight: 800; line-height: 1.1; padding-top: 0.125rem; font-variant-numeric: tabular-nums; }
.mw-date-mon { color: var(--text-muted); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.04em; padding-bottom: 0.25rem; }
.welcome-card h2.mw-title { color: var(--text); font-size: 1rem; letter-spacing: 0; margin: 0; text-wrap: balance; }
.welcome-card p.mw-when { color: var(--text-muted); font-size: 0.8125rem; margin-top: 0.25rem; }
.mw-list { margin: 0.875rem 0 0 1.125rem; color: var(--text-soft); font-size: 0.8125rem; line-height: 1.5; }
.mw-list li + li { margin-top: 0.375rem; }
.mw-list li::marker { color: var(--orange); }
.mw-list strong { color: var(--text); }
.mw-close { position: absolute; top: 0.5rem; right: 0.5rem; display: inline-grid; place-items: center; min-width: 2.75rem; min-height: 2.75rem; background: none; border: 1px solid var(--border); border-radius: 0.5rem; color: var(--text); cursor: pointer; }
.mw-close:focus-visible { outline: 2px solid var(--orange); outline-offset: 2px; }
@media (min-width: 900px) { .mw-list { columns: 2; column-gap: 2rem; } .mw-list li { break-inside: avoid; } }
/* Texto estático para SEO (P2-20), debajo de la lista de certificaciones. */
.seo-about { margin-top: 1.5rem; color: var(--text-muted); font-size: 0.75rem; line-height: 1.5; }
.seo-about h3 { color: var(--text); font-size: 0.8125rem; margin-bottom: 0.5rem; }
.seo-about ul { margin: 0.5rem 0 0 1.25rem; }
.seo-about strong { color: var(--text); }
/* Aviso para reanudar el examen guardado (P1-QA-05, src/resume.js). */
.resume-card h3 { color: var(--orange); font-size: 0.875rem; font-weight: 700; letter-spacing: 1px; margin-bottom: 0.5rem; }
.resume-card .btn-row { margin-top: 0.75rem; }
.resume-card .btn-row > * { flex: 1; }

.level-card {
  width: 100%;
  font: inherit;
  color: inherit;
  text-align: left;
  background: var(--card-bg);
  border: none;
  border-radius: 0.75rem;
  border-left: 0.3125rem solid var(--orange);
  padding: 0.875rem 1rem;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  row-gap: 0.375rem;
}
.level-card:active { transform: scale(0.98); background: var(--hover-bg); }
.level-icon, .mode-icon {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  border: 1.5px solid var(--border);
  border-radius: 50%;
  color: var(--text);
}
.level-icon { width: 2.5rem; height: 2.5rem; }
.ico-s { vertical-align: -0.2em; margin-right: 0.25rem; }
.level-info { flex: 1; }
.level-name { display: block; color: var(--text); font-size: 0.875rem; font-weight: 700; }
.level-meta { display: block; color: var(--text-muted); font-size: 0.75rem; margin-top: 2px; }
.level-badge {
  background: var(--vt-band-2);
  color: var(--text);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.125rem 0.625rem;
  border-radius: 99px;
  letter-spacing: 0.08em;
  flex-shrink: 0;
}

.level-beta {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 1px 0.4375rem;
  border-radius: 99px;
  letter-spacing: 1px;
  flex-shrink: 0;
}

/* ─── AVISO BETA (no bloquea; aparece sobre el borde inferior) ─── */
.beta-toast {
  display: none;
  position: fixed;
  left: 50%;
  bottom: 1rem;
  transform: translateX(-50%);
  width: calc(100% - 2rem);
  max-width: 27.5rem;
  align-items: center;
  gap: 0.625rem;
  background: var(--nav-bg);
  border: 1px solid var(--orange);
  border-radius: 0.625rem;
  padding: 0.625rem 0.75rem;
  box-shadow: 0 0.25rem 0.875rem rgba(0, 0, 0, 0.5);
  z-index: 50;
}
.beta-toast.show { display: flex; }
.beta-toast-tag { color: var(--orange); font-size: 0.75rem; font-weight: 700; letter-spacing: 1px; flex-shrink: 0; }
.beta-toast-text { flex: 1; color: var(--text-bright); font-size: 0.75rem; line-height: 1.4; }
.beta-toast-close { background: none; border: 1px solid var(--border); border-radius: 0.5rem; color: var(--text); cursor: pointer; display: inline-grid; place-items: center; min-height: 2.75rem; min-width: 2.75rem; }

/* Aviso de error no capturado (P2-23): en el flujo, dentro de .sticky-top y debajo del timer
   total, así empuja el contenido en vez de taparlo y el timer queda siempre a la vista. */
.sticky-top { position: sticky; top: 0; z-index: 20; }
/* Con el aviso a la vista, por encima de la pausa (z-index 100) para que Recargar siga a mano. */
.sticky-top:has(.error-notice.show) { z-index: 101; }
.error-notice {
  display: none;
  align-items: center;
  gap: 0.5rem;
  background: var(--nav-bg);
  border-bottom: 2px solid var(--red);
  padding: 0.25rem 0.5rem 0.25rem 1rem;
}
.error-notice.show { display: flex; }
.error-notice-text { flex: 1; color: var(--text-bright); font-size: 0.75rem; line-height: 1.4; }
.error-notice-reload, .error-notice-close { min-height: 2.75rem; min-width: 2.75rem; cursor: pointer; flex-shrink: 0; }
.error-notice-reload { background: var(--orange); color: var(--on-orange); border: 0; border-radius: 0.375rem; font-size: 0.75rem; font-weight: 700; padding: 0 0.75rem; }
.error-notice-close { background: none; border: 1px solid var(--border); border-radius: 0.5rem; color: var(--text); display: inline-grid; place-items: center; }

.empty-notice { color: var(--text-soft); font-size: 0.8125rem; text-align: center; padding: 0.5rem 0.25rem; }
.mode-card:disabled { opacity: 0.5; cursor: not-allowed; }
.score-disclaimer { color: var(--text-muted); font-size: 0.75rem; line-height: 1.4; margin-top: 0.75rem; }

.divider { color: var(--text); font-size: clamp(1.25rem, 1rem + 1vw, 1.5rem); font-weight: 400; letter-spacing: 0.02em; text-align: left; padding: 0.75rem 0 0.25rem; text-transform: uppercase; }
.provider-group { display: flex; flex-direction: column; gap: 0.625rem; margin-bottom: 1rem; }

/* Esqueleto de carga de #levelList (P1-QA-03): decorativo (aria-hidden); el estado lo anuncia
   el texto de arriba. Imita el alto de .level-card para que el listado no salte al llegar. */
.level-skeleton { display: flex; flex-direction: column; gap: 0.625rem; margin: 0.625rem 0 1rem; }
.skeleton-card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 4.25rem;
  padding: 0.875rem 1rem;
  background: var(--card-bg);
  border-radius: 0.75rem;
  border-left: 0.3125rem solid var(--skeleton);
  animation: skeleton-pulse 1.2s ease-in-out infinite alternate;
}
.skeleton-icon { flex-shrink: 0; width: 2rem; height: 2rem; border-radius: 50%; background: var(--skeleton); }
.skeleton-lines { flex: 1; }
.skeleton-line { display: block; width: 70%; height: 0.75rem; border-radius: 0.375rem; background: var(--skeleton); }
.skeleton-line + .skeleton-line { margin-top: 0.5rem; }
.skeleton-line.short { width: 40%; }
@keyframes skeleton-pulse { from { opacity: 1; } to { opacity: 0.5; } }
.provider-header { color: var(--text-muted); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.12em; padding: 0.5rem 2px 0; }

/* ─── QUESTION CARD ─── */
.question-card {
  background: var(--card-bg);
  border-radius: 0.75rem;
  border-left: 0.3125rem solid var(--orange);
  padding: 1rem;
  position: relative;
}
.question-label { color: var(--orange); font-size: 0.75rem; font-weight: 700; letter-spacing: 1.5px; margin-bottom: 0.625rem; }
/* pre-line (P1-QA-08): respeta los \n del enunciado en el banco y colapsa los espacios. */
.question-text { color: var(--text); font-size: 0.9375rem; line-height: 1.55; white-space: pre-line; }
.multi-hint { color: var(--orange); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.5px; margin-top: 0.5rem; }
.question-source { color: var(--text-muted); font-size: 0.75rem; font-style: italic; margin-top: 1rem; text-align: center; }
.question-id-badge {
  position: absolute;
  top: 0.625rem;
  right: 0.75rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--text-muted);
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  border-radius: 99px;
  padding: 2px 0.4375rem;
  user-select: none;
}

/* ─── OPTIONS ─── */
.options { display: flex; flex-direction: column; gap: 0.5rem; border: none; min-width: 0; }

.option {
  background: var(--card-bg);
  border-radius: 0.875rem;
  border-left: 0.3125rem solid var(--orange);
  padding: 0.75rem 0.875rem;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  gap: 0.1875rem;
  -webkit-tap-highlight-color: transparent;
}
.option:active { transform: scale(0.99); }
.option.selected { background: var(--card-bg); border-left-color: var(--orange); box-shadow: inset 0 0 0 2px var(--orange); }
.option.correct { background: var(--opt-correct-bg); border-left-color: var(--green); box-shadow: 0 0 0 1px rgba(102,187,106,0.3); }
.option.wrong { background: var(--opt-wrong-bg); border-left-color: var(--red); box-shadow: 0 0 0 1px rgba(255,107,94,0.3); }
.option.disabled { cursor: default; }
.option:has(.option-input:focus-visible) { outline: 2px solid var(--orange); outline-offset: 2px; }

.option-header { display: flex; align-items: center; gap: 0.625rem; }
.option-letter { color: var(--text-muted); font-weight: 800; font-size: 0.875rem; min-width: 1.25rem; display: inline-flex; align-items: center; gap: 0.5rem; }
.option.correct .option-letter { color: var(--green); }
.option.wrong .option-letter { color: var(--red); }
.option-title { color: var(--text); font-size: 0.875rem; font-weight: 600; }
.option-desc { display: block; color: var(--text-muted); font-size: 0.75rem; padding-left: 1.875rem; }
.option-desc:empty { display: none; }
.option.correct .option-desc, .option.wrong .option-desc { color: var(--text-dim); }
/* Franja de estado al corregir: abre la tarjeta de borde a borde (márgenes negativos = padding de .option). */
.option.correct, .option.wrong { overflow: hidden; }
.option-band { display: flex; align-items: center; gap: 0.375rem; margin: -0.75rem -0.875rem 0.375rem; padding: 0.3125rem 0.875rem; font-size: 0.8125rem; font-weight: 700; line-height: 1.3; color: var(--on-orange); }
.option-band:empty { display: none; }
.option.correct .option-band { background: var(--green); }
.option.wrong .option-band { background: var(--red); }

/* ─── EXPLANATION ─── */
.explanation-card {
  background: var(--expl-bg);
  border-radius: 0.875rem;
  border-left: 0.3125rem solid var(--green);
  padding: 0.875rem 1rem;
  display: none;
}
.explanation-card.show { display: block; }
.explanation-label { color: var(--green); font-size: 0.75rem; font-weight: 700; letter-spacing: 1.5px; margin-bottom: 0.5rem; }
.doc-link .ico-s { margin-right: 0; }
.doc-link { display: inline-block; margin: 0 0 0.625rem; color: var(--green); font-size: 0.8125rem; font-weight: 600; }
.review-item .doc-link { margin: 0 1rem 0.625rem; }
.explanation-doc:not(:empty) { margin-bottom: 0.25rem; }
/* ─── PARA PROFUNDIZAR (P2-MON-03) ─── */
.resource-more {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.25rem 0.5rem; margin-top: 0.5rem; padding-top: 0.5rem;
  border-top: 1px solid var(--border); font-size: 0.8125rem; color: var(--text-soft);
}
.resource-item { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 0.25rem 0.5rem; }
.resource-more a {
  display: inline-flex; align-items: center; gap: 0.375rem; min-height: 2.75rem; color: var(--text); font-weight: 700;
  text-decoration: underline; text-underline-offset: 2px;
}
.resource-tag {
  display: inline-flex; align-items: center; min-height: 1.375rem; padding: 0 0.5rem; border-radius: 99px;
  font-size: 0.75rem; font-weight: 700; border: 1px solid var(--border); color: var(--text-muted);
}
.resource-tag-own { border-color: var(--orange); color: var(--orange); }
.explanation-resources:not(:empty) { margin-bottom: 0.25rem; }
.explanation-text { color: var(--text-soft); font-size: 0.8125rem; line-height: 1.55; white-space: pre-line; }

/* ─── REPORTAR PREGUNTA (P1-UX-08) ─── */
.report-btn {
  margin-top: 0.75rem; min-height: 2.75rem; padding: 0.5rem 0.875rem; border: 1px solid var(--border);
  border-radius: 0.5rem; background: transparent; color: var(--text-soft); font: inherit; font-size: 0.75rem; cursor: pointer;
}
.report-btn:hover { color: var(--orange); border-color: var(--orange); }
.report-btn[aria-disabled="true"] { color: var(--green); border-color: var(--green); cursor: default; }
.review-report-btn { margin: 0 1rem 0.75rem; }
/* El reset global (* { margin: 0 }) pisa el margin: auto con el que el navegador centra el modal. */
.report-dialog {
  margin: auto; width: min(26rem, calc(100vw - 2rem)); max-height: calc(100dvh - 2rem); overflow-y: auto;
  padding: 1.25rem; background: var(--card-bg); color: var(--text); border: 1px solid var(--orange);
  border-radius: 0.75rem; font-size: 0.875rem; line-height: 1.5;
}
.report-dialog::backdrop { background: rgba(0, 0, 0, 0.6); }
.confirm-message { margin-bottom: 1rem; font-size: 0.9375rem; }
.report-title { color: var(--orange); font-size: 1rem; margin-bottom: 0.5rem; }
.report-desc { color: var(--text-muted); font-size: 0.8125rem; margin-bottom: 0.75rem; }
.report-qid { color: var(--text); font-weight: 700; }
.report-kinds { border: none; margin-bottom: 0.75rem; }
.report-kinds legend { font-weight: 700; margin-bottom: 0.375rem; }
.report-kind { display: flex; align-items: center; gap: 0.5rem; min-height: 2.75rem; cursor: pointer; }
.report-kind input { accent-color: var(--orange); width: 1rem; height: 1rem; flex-shrink: 0; }
.report-comment-label { display: block; font-weight: 700; margin-bottom: 0.375rem; }
.report-comment {
  display: block; width: 100%; resize: vertical; padding: 0.5rem 0.625rem; font: inherit;
  background: var(--dark-bg); color: var(--text); border: 1px solid var(--border); border-radius: 0.5rem;
}
/* Recursos y mentoría (P2-27): solo usan colores ya cubiertos por COLOR_PAIRS. */
.resources-dialog { width: min(46rem, calc(100vw - 2rem)); padding: 0; }
.resources-dialog[open] { display: flex; flex-direction: column; }
/* P2-UX-14: dos columnas en escritorio (curso y mentoría | documentación), una en móvil. */
.resources-body { display: grid; grid-template-columns: 1fr; gap: 1.25rem; padding: 1.25rem 1.25rem 0; }
.resources-main { display: flex; flex-direction: column; gap: 1.25rem; }
.resources-title { margin: 0; font-size: 1.25rem; color: var(--text); }
.resources-body .resources-section { margin: 0; }
@media (min-width: 700px) {
  .resources-body { grid-template-columns: 1fr 1fr; align-items: start; }
  .resources-title { grid-column: 1 / -1; }
}
.resources-foot { position: sticky; bottom: 0; margin-top: 1.25rem; padding: 0.75rem 1.25rem; background: var(--card-bg); border-top: 1px solid var(--border); border-radius: 0 0 0.75rem 0.75rem; }
.resources-foot .resource-meta { margin: 0 0 0.5rem; }
.resources-foot .report-actions .btn-secondary { font-family: inherit; min-height: 2.75rem; display: flex; align-items: center; justify-content: center; }
.mentoring-card { border: 1.5px solid var(--orange); border-radius: 0.75rem; padding: 0.875rem; }
.mentoring-card p { color: var(--text-muted); font-size: 0.8125rem; margin: 0 0 0.75rem; }
.mentoring-card .btn-primary { text-decoration: none; font-family: inherit; min-height: 2.75rem; display: flex; align-items: center; justify-content: center; text-align: center; line-height: 1.3; }
.resources-acc { border: 1px solid var(--border); border-radius: 0.5rem; margin-bottom: 0.5rem; overflow: hidden; }
.resources-acc summary { list-style: none; display: flex; align-items: center; gap: 0.5rem; min-height: 2.75rem; padding: 0 0.75rem; cursor: pointer; font-weight: 700; }
.resources-acc summary::-webkit-details-marker { display: none; }
.resources-acc-count { color: var(--text-muted); font-size: 0.75rem; font-weight: 400; margin-right: auto; }
.resources-chev { flex-shrink: 0; color: var(--orange); transition: transform 0.2s; }
.resources-acc[open] .resources-chev { transform: rotate(180deg); }
/* El outline va por dentro: overflow: hidden recortaría el del foco global. */
.resources-acc summary:focus-visible { outline: 2px solid var(--orange); outline-offset: -2px; }
.resources-acc .resource-list { margin: 0; padding: 0 0.75rem 0.25rem; border-top: 1px solid var(--border); }
.resource-list .resource-link { color: var(--text); font-weight: 600; text-decoration: none; }
.resource-link { display: inline-flex; align-items: center; gap: 0.375rem; }
.resource-ext { flex-shrink: 0; color: var(--orange); }
.resources-section { margin-bottom: 1rem; }
.resources-heading { color: var(--orange); font-size: 0.875rem; margin-bottom: 0.5rem; padding-bottom: 0.375rem; border-bottom: 1px solid var(--border); }
.resource-list { list-style: none; padding: 0; }
.resource-list li { min-height: 2.75rem; display: flex; align-items: center; }
.resource-link { color: var(--orange); font-weight: 700; text-decoration: underline; text-underline-offset: 2px; }
.resource-course { background: var(--dark-bg); border: 1px solid var(--border); border-radius: 0.5rem; padding: 0.75rem; margin-bottom: 0.5rem; }
.resource-course.is-highlighted { border-color: var(--orange); }
.resource-badge { color: var(--orange); font-size: 0.75rem; font-weight: 800; letter-spacing: 0.5px; margin-bottom: 0.25rem; }
.resource-meta { color: var(--text-muted); font-size: 0.8125rem; margin-top: 0.25rem; }
.report-actions a.btn-primary, .report-actions a.btn-secondary { text-decoration: none; }
/* Mismo tipo de letra y tamaño en el modal de mentoría (P2-UX-12); los demás modales conservan el suyo. */
.mentoring-dialog .report-actions .btn-primary, .mentoring-dialog .report-actions .btn-secondary { font-family: inherit; line-height: inherit; letter-spacing: 0.5px; font-size: 0.875rem; font-weight: 700; min-height: 2.75rem; display: flex; align-items: center; justify-content: center; text-align: center; }
.mentoring-dialog .report-actions { margin-top: 1.25rem; flex-wrap: wrap; }
.mentoring-dialog [hidden] { display: none !important; }
/* Dos caminos (P2-UX-13): pagar ahora o coordinar primero, y la referencia del pago en un recuadro verde. */
.paths { display: grid; gap: 0.625rem; margin: 0.5rem 0 0.75rem; }
.path { border: 1px solid var(--border); border-radius: 0.75rem; padding: 0.75rem; }
.path.main { border: 1.5px solid var(--orange); }
.path-title { color: var(--orange); font-size: 0.875rem; margin-bottom: 0.25rem; }
.path-tag { display: inline-block; background: var(--orange); color: var(--on-orange); font-size: 0.75rem; font-weight: 800; letter-spacing: 0.5px; border-radius: 0.25rem; padding: 0.0625rem 0.375rem; margin-left: 0.375rem; }
.path-desc { color: var(--text-muted); font-size: 0.8125rem; margin-bottom: 0.625rem; }
.path .report-status { margin: 0.5rem 0 0; }
.payment-ref { border: 1px solid var(--green); border-radius: 0.75rem; padding: 0.75rem; margin: 0.5rem 0 0.75rem; }
.payment-ref strong { color: var(--green); }
.link-btn { background: none; border: none; color: var(--orange); font: inherit; font-weight: 700; text-decoration: underline; text-underline-offset: 2px; cursor: pointer; min-height: 2.75rem; padding: 0 0.5rem; }
/* Acciones del footer en una fila de botones píldora iguales (P2-UX-24, opción 3). */
.site-footer-actions { border: 0; padding: 0; margin: 0; min-width: 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 0.5rem; width: 100%; max-width: 24rem; }
.fa-btn, .site-footer-actions .donate-link { flex: 1 1 8.5rem; display: inline-flex; align-items: center; justify-content: center; gap: 0.375rem; min-height: 2.75rem; padding: 0 0.75rem; border: 1px solid var(--border); border-radius: 99px; background: transparent; color: var(--text); font: inherit; font-size: 0.75rem; font-weight: 700; text-decoration: none; cursor: pointer; }
.fa-btn svg, .site-footer-actions .donate-link svg { color: var(--orange); flex-shrink: 0; }
.fa-btn:hover, .site-footer-actions .donate-link:hover { background: var(--hover-bg); border-color: var(--orange); }
.fa-btn:focus-visible { outline: 2px solid var(--orange); outline-offset: 2px; }
.site-footer-actions .site-footer-donate { flex: 1 1 8.5rem; flex-wrap: nowrap; }
.site-footer-actions .donate-link::after { display: none; }
/* Diálogo de sugerencias: campos de una línea con el alto táctil de 44px. */
.sg-input { display: block; width: 100%; min-height: 2.75rem; padding: 0.5rem 0.625rem; font: inherit; background: var(--dark-bg); color: var(--text); border: 1px solid var(--border); border-radius: 0.5rem; }
.sg-input:focus-visible, .report-comment:focus-visible { outline: 2px solid var(--orange); outline-offset: 2px; }
.sg-select { margin-bottom: 0.75rem; }
.sg-help { margin: 0.25rem 0 0.75rem; font-size: 0.75rem; }
.sg-ctx { color: var(--text-muted); font-size: 0.75rem; margin: 0.5rem 0 0.25rem; }
.report-count { color: var(--text-muted); font-size: 0.75rem; text-align: right; margin-top: 0.25rem; }
.report-status { display: block; min-height: 1.5em; margin: 0.5rem 0; }
.report-status.is-error { color: var(--red); }
.report-status.is-success { color: var(--green); font-weight: 700; }
.report-actions .btn-primary { flex: 1; }
.report-actions .btn-primary[aria-disabled="true"] { opacity: 0.6; cursor: progress; }

/* ─── QUESTION TIMER ─── */
.q-timer-label {
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.q-timer-secs { color: var(--orange); font-size: 1.125rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.q-timer-secs.urgent { color: var(--red); animation: pulse 0.5s infinite alternate; }
@keyframes pulse { from { opacity: 1; } to { opacity: 0.5; } }

.timer-bar-bg { background: #7A7A7A; height: 0.375rem; border-radius: 0.1875rem; margin-top: 0.375rem; }
.timer-bar-fill { width: 100%; background: var(--orange); height: 0.375rem; border-radius: 0.1875rem; transition: width 1s linear, background 0.3s; }
.timer-bar-fill.urgent { background: var(--red); }

/* ─── SCORE CARD ─── */
.score-card {
  background: var(--card-bg);
  border-radius: 0.75rem;
  border-left: 0.3125rem solid var(--orange);
  padding: 1.5rem;
  text-align: left;
}
.score-title { color: var(--orange); font-size: 0.75rem; font-weight: 700; letter-spacing: 1.5px; margin-bottom: 0.75rem; }
.score-number { color: var(--text); font-size: 3.25rem; font-weight: 400; line-height: 1; font-variant-numeric: tabular-nums; }
.score-sub { color: var(--text-muted); font-size: 0.75rem; margin-top: 0.25rem; }
.score-pass { color: var(--green); font-size: 1.25rem; font-weight: 800; margin-top: 0.5rem; }
.score-fail { color: var(--red); font-size: 1.25rem; font-weight: 800; margin-top: 0.5rem; }

.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem 0.5rem; padding: 0.25rem 0.25rem 0.5rem; }
.stat-card {
  background: transparent;
  border-radius: 0.625rem;
  padding: 0;
  text-align: left;
  display: flex;
  flex-direction: column-reverse;
  gap: 0.25rem;
}
.stat-value { color: var(--text); font-size: 2rem; font-weight: 400; line-height: 1; font-variant-numeric: tabular-nums; }
.stat-value.green { color: var(--green); }
.stat-value.red { color: var(--red); }
.stat-label { color: var(--text-soft); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.06em; margin-top: 0.25rem; }

/* ─── BUTTONS ─── */
.btn-primary {
  background: var(--orange);
  color: var(--on-orange);
  border: none;
  border-radius: 0.75rem;
  padding: 0.875rem;
  font-size: 0.875rem;
  font-weight: 800;
  cursor: pointer;
  width: 100%;
  letter-spacing: 0.5px;
  transition: opacity 0.2s;
  -webkit-tap-highlight-color: transparent;
}
.btn-primary:active { opacity: 0.85; }
.btn-primary:disabled, .btn-secondary:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-secondary:disabled:active { background: transparent; color: var(--orange); }

.btn-secondary {
  background: transparent;
  color: var(--orange);
  border: 1.5px solid var(--orange);
  border-radius: 0.75rem;
  padding: 0.8125rem;
  font-size: 0.8125rem;
  font-weight: 700;
  cursor: pointer;
  width: 100%;
  transition: all 0.2s;
  -webkit-tap-highlight-color: transparent;
}
.btn-secondary:active { background: var(--orange); color: var(--on-orange); }

.btn-secondary.btn-compact { width: auto; padding: 0.5rem 0.875rem; font-size: 0.75rem; min-height: 2.75rem; }
.question-card.question-card-compact { padding: 12px 16px; }
.welcome-card .load-error-title { color: var(--red); }
.welcome-card .load-error-msg { color: var(--text-soft); }
.load-error-retry { margin-top: 12px; }

.btn-row { display: flex; gap: 0.5rem; }
.btn-row .btn-secondary { flex: 1; }

/* ─── FOOTER NAV ─── */
.footer {
  background: var(--footer-bg);
  padding: 0.625rem 1rem 0.875rem;
  flex-shrink: 0;
  border-top: 1px solid var(--footer-border);
  position: sticky;
  bottom: 0;
  z-index: 20;
}

.pause-btn {
  background: var(--nav-bg);
  color: var(--orange);
  border: 1px solid #808080;
  border-radius: 0.5rem;
  padding: 0.5rem 1rem;
  min-height: 2.75rem;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  -webkit-tap-highlight-color: transparent;
}
.pause-btn:active { background: var(--orange); color: var(--on-orange); }
.pause-btn.paused { background: var(--paused-bg); border-color: var(--orange); color: var(--orange); }

.footer-row { display: flex; align-items: center; gap: 0.5rem; }
.footer-row .pause-btn { padding: 0.5rem 0.75rem; }
.footer-info { flex: 1; text-align: center; color: var(--text-muted); font-size: 0.75rem; }
.footer-nav { display: flex; gap: 0.5rem; }
.nav-btn {
  background: var(--vt-band-2);
  color: var(--text);
  border: none;
  border-radius: 99px;
  padding: 0.5rem 1rem;
  min-height: 3rem;
  min-width: 2.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  -webkit-tap-highlight-color: transparent;
}
.nav-btn:disabled { opacity: 0.3; cursor: default; }
.nav-btn:not(:disabled):active { background: var(--orange); color: var(--on-orange); }

/* ─── SITE FOOTER (signature) ─── */
.site-footer {
  flex-shrink: 0;
  background: var(--footer-bg);
  border-top: 1px solid var(--footer-border);
  padding: 0.625rem 1rem 0.875rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}
.site-footer-text { color: var(--text-muted); font-size: 0.75rem; letter-spacing: 0.3px; }
.site-footer-text strong { color: var(--orange); }
.site-footer-version { color: var(--text-muted); font-size: 0.75rem; font-variant-numeric: tabular-nums; }
/* Tema (P2-25) e idioma en el encabezado, arriba a la derecha (P2-UX-15, v1 opción 1): íconos y siglas
   de 32px sin caja sobre el naranja; el activo usa el estilo del badge (fondo --nav-bg y texto naranja). */
.header-prefs { display: flex; align-items: center; justify-content: flex-end; gap: 0.125rem; margin: 0 -0.5rem 0.25rem 0; }
.header-prefs-sep { flex: none; width: 1px; height: 1.25rem; margin: 0 0.375rem; background: var(--on-orange); opacity: 0.45; }
.theme-toggle { display: flex; gap: 0.125rem; }
.theme-btn {
  position: relative; display: inline-flex; align-items: center; justify-content: center;
  min-height: 2rem; min-width: 2rem; padding: 0; background: transparent;
  color: var(--text-muted); border: 1px solid transparent; border-radius: 0.5rem;
  font: inherit; font-size: 0.75rem; font-weight: 600; line-height: 1; cursor: pointer;
}
.theme-btn[lang] { padding: 0 0.375rem; }
/* Área táctil de 44px de alto; a lo ancho cubre la mitad del hueco con cada vecino, sin solaparse. */
.theme-btn::after {
  content: ""; position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: calc(100% + 2px + 0.125rem); height: 2.75rem;
}
.header .theme-btn { color: var(--on-orange); }
.header .theme-btn[aria-pressed="true"] { color: var(--orange); background: var(--nav-bg); }
.header .theme-btn:focus-visible { outline: 2px solid var(--on-orange); outline-offset: 2px; }
/* Idioma fijo durante el examen: deshabilitado y atenuado; el activo se marca con línea, sin fondo. */
.header .theme-btn:disabled { opacity: 0.55; cursor: not-allowed; }
.header .theme-btn[aria-pressed="true"]:disabled { opacity: 1; background: transparent; color: var(--on-orange); box-shadow: inset 0 -2px 0 var(--on-orange); border-radius: 0; }
.site-footer-links { display: flex; align-items: center; gap: 1rem; }
/* Fila de 44px de alto: el área táctil del enlace y del "?" cabe en ella y no invade a los controles vecinos. */
.site-footer-donate, .results-donate { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 0.25rem; min-height: 2.75rem; }
.site-footer-donate { font-size: 0.75rem; }
/* Subrayado para que el enlace no se distinga solo por el color (WCAG 1.4.1). */
/* position + z-index: el texto del enlace gana los toques que caen también en el área táctil del "?". */
.donate-link { position: relative; z-index: 1; background: none; border: 0; padding: 0; font: inherit; cursor: pointer; color: var(--orange); font-weight: 700; text-decoration: underline; text-underline-offset: 2px; }
/* Área táctil de 44px de alto (diseño aprobado), sin ensanchar el enlace. */
.donate-link::after { content: ""; position: absolute; left: 0; right: 0; top: 50%; transform: translateY(-50%); height: 2.75rem; }
.donate-link:hover, .donate-link:active { text-decoration-thickness: 2px; }
.results-donate { color: var(--text-muted); font-size: 0.75rem; text-align: center; margin-top: 0.5rem; }
/* Botón "(?)" junto al enlace de donación y panel que explica para qué son (P2-MON-07).
   Círculo de 24px; el ::after lleva el área táctil a 44px de lado (2.75rem). */
.donate-help {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  margin-left: 0.25rem;
  vertical-align: middle;
  background: transparent;
  color: var(--orange);
  border: 1.5px solid var(--orange);
  border-radius: 50%;
  font: inherit;
  font-size: 0.75rem;
  font-weight: 800;
  line-height: 1;
  cursor: pointer;
  transition: all 0.2s;
  -webkit-tap-highlight-color: transparent;
}
.donate-help::after {
  content: ""; position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 2.75rem; height: 2.75rem;
}
.donate-help:hover, .donate-help:active { background: var(--orange); color: var(--on-orange); }
/* El reset global (* { margin: 0 }) pisa el margin: auto con el que el navegador centra el popover. */
.donate-info, .donate-choose {
  margin: auto;
  width: min(22rem, calc(100vw - 2rem));
  padding: 1.25rem;
  background: var(--card-bg);
  color: var(--text);
  border: 1px solid var(--orange);
  border-radius: 0.75rem;
  font-size: 0.875rem;
  line-height: 1.5;
}
.donate-info::backdrop, .donate-choose::backdrop { background: rgba(0, 0, 0, 0.6); }
.donate-info-title { color: var(--orange); font-size: 1rem; margin-bottom: 0.5rem; }
.donate-info p + p { margin-top: 0.5rem; }
.donate-info-close { margin-top: 1rem; }
/* Diálogo de elección entre Bold y GitHub Sponsors (P2-MON-12): comparte base con .donate-info. */
.donate-choose p { color: var(--text-muted); }
.donate-choose a:focus-visible, .donate-choose button:focus-visible { outline: 2px solid var(--orange); outline-offset: 2px; }
.donate-card { display: block; position: relative; min-height: 2.75rem; margin-top: 0.625rem; padding: 0.875rem 0.75rem; border: 1px solid var(--border); border-radius: 0.625rem; color: var(--text); text-decoration: none; }
.donate-card:hover { background: var(--hover-bg); }
.donate-card-rec { border-color: var(--orange); border-width: 2px; }
.donate-card b { font-size: 0.9375rem; }
.donate-badge { position: absolute; top: -0.6rem; right: 0.75rem; padding: 0.125rem 0.5rem; background: var(--orange); color: var(--on-orange); border-radius: 99px; font-size: 0.75rem; font-weight: 800; }
.donate-chips { display: flex; flex-wrap: wrap; gap: 0.375rem; margin-top: 0.5rem; }
.donate-chip { padding: 0.125rem 0.5rem; border: 1px solid var(--border); border-radius: 99px; color: var(--text-muted); font-size: 0.75rem; }
.donate-choose .donate-info-close { width: 100%; margin-top: 0.75rem; }
.site-footer-disclaimer {
  color: var(--text-muted);
  font-size: 0.75rem;
  line-height: 1.4;
  text-align: center;
  max-width: 35rem;
}
/* Aviso de privacidad de las estadísticas (P2-21). */
.privacy-notice { color: var(--text-muted); font-size: 0.75rem; line-height: 1.4; text-align: center; max-width: 35rem; }
.privacy-notice summary { cursor: pointer; }
.privacy-more { color: var(--orange); text-decoration: underline; text-underline-offset: 2px; }
.privacy-body { text-align: left; display: flex; flex-direction: column; gap: 0.375rem; margin-top: 0.5rem; }
.privacy-toggle { display: inline-flex; align-items: center; gap: 0.5rem; color: var(--text); font-weight: 700; cursor: pointer; min-height: 2.75rem; }
.privacy-toggle input { width: 1rem; height: 1rem; accent-color: var(--orange); }
.social-link {
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.75rem;
  min-height: 2.75rem;
  transition: color 0.2s;
  -webkit-tap-highlight-color: transparent;
}
.social-link:hover, .social-link:active { color: var(--orange); }
.social-link svg { width: 1.125rem; height: 1.125rem; display: block; }

/* ─── PAUSED OVERLAY ─── */
.paused-overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay-bg);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  z-index: 100;
}
.paused-overlay.show { display: flex; }
.paused-icon { color: var(--orange); line-height: 0; }
.paused-text { color: var(--orange); font-size: 1.5rem; font-weight: 800; letter-spacing: 2px; }
.paused-sub { color: var(--text-muted); font-size: 0.8125rem; }
.pause-note { display: flex; gap: 0.625rem; align-items: flex-start; max-width: 19rem; background: var(--card-bg); border-left: 0.3125rem solid var(--orange); border-radius: 0.75rem; padding: 0.75rem 0.875rem; color: var(--text); font-size: 0.8125rem; line-height: 1.4; margin-top: 0.5rem; }
.pause-note[hidden] { display: none; }
.pause-note svg { flex: none; color: var(--orange); margin-top: 0.0625rem; }
.paused-overlay .btn-primary { width: 12.5rem; }

/* ─── MODE SELECT ─── */
.mode-card {
  width: 100%;
  font: inherit;
  color: inherit;
  text-align: left;
  background: var(--card-bg);
  border: none;
  border-radius: 0.75rem;
  border-left: 0.3125rem solid var(--orange);
  padding: 1rem;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 0.875rem;
}
.mode-card:active { transform: scale(0.98); background: var(--hover-bg); }
.mode-icon { width: 3.25rem; height: 3.25rem; }
.mode-info { flex: 1; }
.mode-name { display: block; color: var(--text); font-size: 0.9375rem; font-weight: 700; }
.mode-desc { display: block; color: var(--text-muted); font-size: 0.75rem; margin-top: 0.25rem; line-height: 1.4; }

/* Opciones del simulador (corregir al final, tiempo extendido) */
.exam-options { border: none; display: flex; flex-direction: column; gap: 0.5rem; padding: 0; }
.exam-options legend { color: var(--text-muted); font-size: 0.75rem; font-weight: 700; letter-spacing: 1px; margin-bottom: 0.5rem; }
.exam-options:disabled { opacity: 0.5; }
.exam-group { border: 0; border-radius: 0.75rem; padding: 1rem 1rem 0.5rem; margin-bottom: 0.75rem; background: var(--card-bg); }
.exam-group-title { color: var(--text-muted); font-size: 0.75rem; font-weight: 700; letter-spacing: 1px; margin-bottom: 0.5rem; }
.exam-group .exam-option { padding: 0.5rem 0.25rem; background: none; }
.pace { display: none; align-items: center; gap: 0.5rem; padding: 0.25rem; }
.pace-label { color: var(--text-muted); font-size: 0.75rem; font-weight: 600; letter-spacing: 1px; white-space: nowrap; }
.pace-line { flex: 1; height: 1px; background: var(--border); }
.pace-value { color: var(--text); font-size: 0.9375rem; font-variant-numeric: tabular-nums; }
.pace-choice { display: flex; flex-direction: column; gap: 0.375rem; padding: 0.25rem 0.25rem 0.5rem; }
.pace-choice-row { display: flex; align-items: flex-start; gap: 0.625rem; min-height: 2.75rem; padding: 0.5rem; border: 1px solid var(--border); border-radius: 0.875rem; cursor: pointer; }
.pace-choice-row:has(input:checked) { background: transparent; border: 2px solid var(--orange); padding: calc(0.5rem - 1px); }
.pace-choice-row:has(input:focus-visible) { outline: 2px solid var(--orange); outline-offset: 2px; }
.pace-choice-row input { width: 1rem; height: 1rem; margin-top: 0.125rem; flex-shrink: 0; accent-color: var(--orange); }
.pace-choice-row b { display: block; color: var(--text); font-size: 0.8125rem; }
.pace-choice-row small { display: block; color: var(--text-muted); font-size: 0.75rem; line-height: 1.4; }
.exam-option { display: flex; align-items: flex-start; gap: 0.625rem; background: var(--card-bg); border-radius: 0.625rem; padding: 0.75rem 1rem; cursor: pointer; }
.exam-option input { width: 1rem; height: 1rem; margin-top: 0.125rem; flex-shrink: 0; accent-color: var(--orange); }
.exam-option-name { display: block; color: var(--text); font-size: 0.8125rem; font-weight: 700; }
.exam-option-desc { display: block; color: var(--text-muted); font-size: 0.75rem; margin-top: 0.125rem; line-height: 1.4; }

/* Revisión de respuestas en el resultado */
.review { display: flex; flex-direction: column; gap: 0.5rem; margin-top: 0.5rem; }
.review[hidden] { display: none; }
.review h3 { color: var(--orange); font-size: 0.75rem; letter-spacing: 1.5px; margin-top: 1rem; }
.review-hint { color: var(--text-muted); font-size: 0.75rem; }
.domain-table { width: 100%; border-collapse: collapse; font-size: 0.8125rem; color: var(--text); font-variant-numeric: tabular-nums; }
.domain-table th, .domain-table td { text-align: left; padding: 0.5rem 0.5rem; border-bottom: 1px solid var(--border); }
.domain-table thead th { color: var(--text-muted); font-size: 0.75rem; }
.domain-table tbody th { font-weight: 600; }
.review-list { list-style: none; display: flex; flex-direction: column; gap: 0.4rem; padding: 0; }
.review-item { background: var(--card-bg); border-radius: 0.625rem; border-left: 0.25rem solid var(--border); }
.review-item.review-correct { border-left-color: var(--green); }
.review-item.review-wrong { border-left-color: var(--red); }
.review-item summary { color: var(--text); font-size: 0.8125rem; font-weight: 700; padding: 0.75rem 1rem; cursor: pointer; }
.review-text, .review-explanation { color: var(--text); font-size: 0.8125rem; line-height: 1.5; padding: 0 1rem 0.625rem; white-space: pre-line; }
.review-explanation { color: var(--text-muted); }
.review-options { list-style: none; padding: 0 1rem 0.625rem; display: flex; flex-direction: column; gap: 0.25rem; font-size: 0.8125rem; color: var(--text-muted); }
.review-item .rv-tag { display: inline-flex; align-items: center; gap: 0.25rem; margin-left: 0.5rem; color: var(--orange); border: 1px solid var(--orange); border-radius: 1rem; padding: 0.1rem 0.5rem; font-size: 0.75rem; font-weight: 700; vertical-align: middle; }
.review-item .rv-tag svg { fill: currentColor; }
.review-option.correct { color: var(--green); }
.review-option.wrong { color: var(--red); }
/* P1-UX-06: botones del resultado y filtros de la pantalla de revisión */
.review-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.review-actions .btn-secondary { flex: 1 1 10rem; }
.review-filters { border: none; display: flex; flex-wrap: wrap; gap: 0.5rem; padding: 0; }
.review-filters legend { color: var(--text-muted); font-size: 0.75rem; font-weight: 700; letter-spacing: 1px; margin-bottom: 0.5rem; }
.review-filter { display: inline-flex; align-items: center; gap: 0.5rem; background: var(--card-bg); border: 1.5px solid transparent; border-radius: 1.25rem; padding: 0.5rem 0.875rem; min-height: 2.75rem; color: var(--text); font-size: 0.8125rem; font-weight: 600; cursor: pointer; }
.review-filter:has(input:checked) { border-color: var(--orange); }
.review-filter input { width: 1rem; height: 1rem; margin: 0; accent-color: var(--orange); }

/* ─── QUESTION LIST ─── */
.q-list-item {
  width: 100%;
  font: inherit;
  color: inherit;
  text-align: left;
  background: var(--card-bg);
  border: none;
  border-radius: 0.625rem;
  border-left: 0.3125rem solid var(--border);
  padding: 0.75rem 0.875rem;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}
.q-list-item:active { transform: scale(0.99); }
.q-list-item.q-correct { border-left-color: var(--green); }
.q-list-item.q-wrong   { border-left-color: var(--red); }
.q-list-num  { color: var(--orange); font-size: 0.8125rem; font-weight: 800; min-width: 1.875rem; flex-shrink: 0; }
.q-list-text { flex: 1; color: var(--text); font-size: 0.8125rem; line-height: 1.4;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.chip { display: inline-flex; align-items: center; gap: 0.25rem; border: 1px solid currentColor; border-radius: 1rem; padding: 0.125rem 0.5rem; font-size: 0.75rem; font-weight: 700; line-height: 1.3; white-space: nowrap; }
.chip-ok { color: var(--cell-correct-fg); background: var(--cell-correct-bg); }
.chip-ko { color: var(--cell-wrong-fg); background: var(--cell-wrong-bg); }
.chip-none { color: var(--text-muted); }
.q-list-status { display: inline-flex; flex-shrink: 0; color: var(--text-muted); }
.q-list-item.q-correct .q-list-status { color: var(--green); }
.q-list-item.q-wrong .q-list-status { color: var(--red); }
.q-search { margin-bottom: 0.75rem; }
.q-search-label { display: block; color: var(--text-muted); font-size: 0.75rem; font-weight: 700; letter-spacing: 1px; margin-bottom: 0.375rem; }
.q-search-input { width: 100%; box-sizing: border-box; font: inherit; font-size: 1rem; min-height: 2.75rem; color: var(--text); background: var(--card-bg); border: 1.5px solid var(--border); border-radius: 0.625rem; padding: 0.5rem 0.75rem; }
.q-search-input:focus-visible { outline: 2px solid var(--orange); outline-offset: 2px; }
.q-list-empty { color: var(--text-muted); font-size: 0.875rem; text-align: center; padding: 1rem 0; }
.q-list-progress { color: var(--text-muted); font-size: 0.75rem; margin-top: 0.25rem; }

/* ─── TIMEOUT BANNER ─── */
.timeout-banner {
  background: var(--opt-wrong-bg);
  border: 1px solid var(--red);
  border-radius: 0.625rem;
  padding: 0.75rem 0.875rem;
  display: none;
  align-items: center;
  gap: 0.625rem;
}
.timeout-banner.show { display: flex; }
.timeout-icon { display: inline-flex; color: var(--red); }
.timeout-text { color: var(--red); font-size: 0.8125rem; font-weight: 700; }

/* ─── RESPONSIVE ─── */

/* Tablet: 37.5rem+ */
@media (min-width: 600px) {
  body {
    padding: 0 1.5rem;
    background: var(--page-bg-md);
    align-items: center;
  }
  .app { max-width: 42.5rem; }
  .header { padding: 0.75rem 1.5rem 1.5rem; }
  .header h1 { font-size: 1.625rem; }
  .header .subtitle { font-size: 0.75rem; }
  .badge { font-size: 0.75rem; padding: 0.25rem 1rem; }
  .content { padding: 1rem 1.25rem; gap: 0.75rem; }
  .question-text { font-size: 1rem; }
  .option { padding: 0.875rem 1rem; }
  .option-band { margin: -0.875rem -1rem 0.375rem; padding: 0.3125rem 1rem; }
  .option-title { font-size: 0.9375rem; }
  .option-desc { font-size: 0.75rem; }
  .score-number { font-size: 3.75rem; }
  .welcome-card p { font-size: 0.8125rem; }
  .mode-desc { font-size: 0.8125rem; }
  .explanation-text { font-size: 0.875rem; }
}

/* Desktop: 56.25rem+ */
@media (min-width: 900px) {
  body {
    padding: 2rem;
    background: var(--page-bg-lg);
  }
  .app {
    max-width: 51.25rem;
    min-height: calc(100vh - 4rem);
    min-height: calc(100dvh - 4rem);
    border-radius: 1.25rem;
    box-shadow: 0 0.5rem 2.5rem rgba(0, 0, 0, 0.6);
  }
  .header { padding: 0.75rem 2rem 1.75rem; }
  .header h1 { font-size: 1.875rem; letter-spacing: 1px; }
  .header .subtitle { font-size: 0.8125rem; margin-bottom: 0.75rem; }
  .badge { font-size: 0.8125rem; }
  .total-timer-bar { padding: 0.625rem 1.5rem; }
  .total-timer-label { font-size: 0.75rem; }
  .total-timer-value { font-size: 1rem; }
  .content { padding: 1.25rem 1.75rem; gap: 0.875rem; }
  .welcome-card { padding: 1.25rem 1.375rem; }
  .welcome-card h2 { font-size: 1rem; }
  .welcome-card p { font-size: 0.8125rem; }
  .level-card { padding: 1rem 1.25rem; column-gap: 1rem; }
  .skeleton-card { min-height: 4.875rem; padding: 1rem 1.25rem; gap: 1rem; }
  .level-name { font-size: 1rem; }
  .level-meta { font-size: 0.75rem; }
  .level-icon { width: 2.75rem; height: 2.75rem; }
  .question-card { padding: 1.25rem 1.375rem; }
  .question-text { font-size: 1.0625rem; line-height: 1.6; }
  .question-label { font-size: 0.75rem; margin-bottom: 0.75rem; }
  .option { padding: 0.875rem 1.125rem; gap: 0.375rem; }
  .option-band { margin: -0.875rem -1.125rem 0.25rem; padding: 0.3125rem 1.125rem; }
  .option-title { font-size: 0.9375rem; }
  .option-desc { font-size: 0.75rem; }
  .option-letter { font-size: 0.9375rem; }
  .explanation-card { padding: 1.125rem 1.25rem; }
  .explanation-text { font-size: 0.875rem; }
  .score-number { font-size: 4.5rem; }
  .score-sub { font-size: 0.875rem; }
  .score-pass, .score-fail { font-size: 1.375rem; }
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
  .stat-label { font-size: 0.75rem; }
  .mode-card { padding: 1.25rem 1.375rem; gap: 1.125rem; }
  .mode-icon { width: 3.5rem; height: 3.5rem; }
  .mode-name { font-size: 1.0625rem; }
  .mode-desc { font-size: 0.8125rem; }
  .btn-primary { font-size: 0.9375rem; padding: 1rem; border-radius: 0.875rem; }
  .btn-secondary { font-size: 0.875rem; padding: 0.9375rem; border-radius: 0.875rem; }
  .footer { padding: 0.75rem 1.5rem 1.125rem; }
  .footer-info { font-size: 0.75rem; }
  .site-footer { padding: 0.75rem 1.5rem 1.125rem; }
  .site-footer-text { font-size: 0.75rem; }
  .site-footer-donate, .results-donate { font-size: 0.8125rem; }
  .site-footer-disclaimer, .privacy-notice { font-size: 0.75rem; }
  .social-link svg { width: 1.25rem; height: 1.25rem; }
  .nav-btn { padding: 0.625rem 1.125rem; font-size: 0.8125rem; }
  .pause-btn { padding: 0.625rem 1.25rem; font-size: 0.8125rem; }
  .paused-text { font-size: 1.75rem; }
  .paused-sub { font-size: 0.875rem; }
  .paused-overlay .btn-primary { width: 15rem; }
  .q-list-item { padding: 0.875rem 1.125rem; }
  .q-list-text { font-size: 0.875rem; }
  .q-list-num { font-size: 0.875rem; }
  .q-timer-secs { font-size: 1.375rem; }
}

/* Large desktop: 75rem+ */
@media (min-width: 1200px) {
  .app { max-width: 60rem; }
  .header h1 { font-size: 2.125rem; }
  .question-text { font-size: 1.125rem; }
  .option-title { font-size: 1rem; }
  .score-number { font-size: 5rem; }
}

/* ─── PANTALLAS ANCHAS (P2-22) ───
   Todo el CSS usa rem: al subir el tamaño base, el layout entero escala en 2K/4K. */
@media (min-width: 1600px) { html { font-size: 112.5%; } }
@media (min-width: 2200px) { html { font-size: 137.5%; } }
@media (min-width: 3000px) { html { font-size: 175%; } }

/* Inicio: lista de certificaciones + panel con animación */
.home-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 1.6rem; align-items: start; }
.hero {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: sticky;
  top: 1rem;
  padding: 1.4rem 1.5rem 1.6rem;
  text-align: center;
  background: transparent;
  border: 0;
  border-radius: 1.25rem;
}
.hero-anim { width: 100%; max-width: 34rem; max-height: 24rem; aspect-ratio: 8 / 5; margin: 0 auto; }
.hero-anim svg { max-height: 24rem; }
.hero h3 { color: var(--text); font-size: 1.05rem; margin-top: 0.4rem; }
.hero p { color: var(--text-dim); font-size: 0.8rem; line-height: 1.5; margin-top: 0.3rem; max-width: 26rem; }

/* Pregunta: contenido + mapa de preguntas */
.quiz-layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: 1.4rem; align-items: start; }
.quiz-main { display: flex; flex-direction: column; gap: 0.6rem; min-width: 0; }
.quiz-side {
  display: none;
  position: sticky;
  /* Debajo del timer total y por encima de los controles, ambos sticky. */
  top: 3.5rem;
  background: var(--card-bg);
  border-radius: 0.75rem;
  padding: 0.9rem;
  max-height: calc(100vh - 12rem);
  overflow-y: auto;
}
.quiz-side h3 { color: var(--orange); font-size: 0.75rem; letter-spacing: 0.1rem; margin-bottom: 0.6rem; }
.q-map { display: grid; grid-template-columns: repeat(8, 1fr); gap: 0.4rem; }
.q-map-cell {
  aspect-ratio: 1;
  font: inherit;
  font-size: 0.75rem;
  color: var(--text-soft);
  background: var(--cell-bg);
  border: 1px solid #808080;
  border-radius: 0.4rem;
  display: grid;
  place-items: center;
  cursor: default;
  position: relative;
  overflow: hidden;
}
button.q-map-cell { cursor: pointer; }
.cell-bar { position: absolute; left: 0; right: 0; bottom: 0; height: 0.75rem; display: grid; place-items: center; color: var(--on-orange); }
.bar-ok { background: var(--green); }
.bar-ko { background: var(--red); }
.q-map-cell.q-correct { background: var(--cell-correct-bg); color: var(--cell-correct-fg); border-color: var(--green); }
.q-map-cell.q-wrong   { background: var(--cell-wrong-bg); color: var(--cell-wrong-fg); border-color: var(--red); }
.q-map-cell.q-answered { border-color: var(--orange); }
.q-map-cell.q-current { outline: 2px solid var(--orange); outline-offset: -2px; }
/* Aviso de versión en inglés (P2-UX-16): hoja inferior en móvil, tarjeta abajo a la izquierda en escritorio.
   Es position: fixed, así que no desplaza el contenido (CLS = 0). */
.lang-notice {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 50;
  display: grid; gap: 0.5rem; padding: 1rem;
  background: var(--card-bg); border-top: 3px solid var(--orange); border-radius: 1rem 1rem 0 0;
  box-shadow: 0 -0.25rem 1.25rem rgba(0, 0, 0, 0.5);
  opacity: 1; transition: opacity 1.5s ease-out;
}
.lang-notice.is-leaving { opacity: 0; }
@media (min-width: 48rem) {
  .lang-notice { left: 1.5rem; right: auto; bottom: 1.5rem; width: 21rem; border: 1px solid var(--orange); border-radius: 0.75rem; }
}
.lang-notice-head { display: flex; align-items: center; gap: 0.5rem; color: var(--orange); font-weight: 700; }
.lang-notice-icon { display: flex; }
.lang-notice-text { margin: 0; color: var(--text-bright); font-size: 0.8125rem; line-height: 1.4; }
.lang-notice-actions { display: flex; gap: 0.5rem; }
.lang-notice-x, .lang-notice-btn, .lang-notice-ghost {
  min-height: 2.75rem; min-width: 2.75rem; font-family: inherit; cursor: pointer;
}
.lang-notice-x { margin: -0.5rem -0.5rem -0.5rem auto; background: none; border: 1px solid var(--border); border-radius: 0.5rem; color: var(--text); display: inline-grid; place-items: center; }
.lang-notice-btn { flex: 1; padding: 0 0.875rem; border: 0; border-radius: 0.5rem; background: var(--orange); color: var(--on-orange); font-size: 0.8125rem; font-weight: 700; }
.lang-notice-ghost { padding: 0 0.875rem; border: 1px solid var(--border); border-radius: 0.5rem; background: none; color: var(--text); font-size: 0.8125rem; font-weight: 600; }
.lang-notice button:focus-visible { outline: 2px solid var(--orange); outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
  .hero-anim { display: none; }
  .skeleton-card { animation: none; }
  .q-timer-secs.urgent { animation: none; }
  .lang-notice { transition: none; }
  * { transition-duration: 0.01ms !important; }
}

/* Hover y foco visible (P2-17). El hover solo en punteros que lo soportan. */
@media (hover: hover) {
  .btn-primary:hover:not(:disabled) { opacity: 0.9; }
  .btn-secondary:hover:not(:disabled), .pause-btn:hover, .fin-top:hover { background: var(--orange); color: var(--on-orange); }
  .nav-btn:hover:not(:disabled) { background: var(--nav-hover); }
  .q-list-item:hover:not(.q-correct):not(.q-wrong) { border-color: var(--orange); }
  .q-map-cell:hover:not(.q-correct):not(.q-wrong) { border-color: var(--orange); }
  .option:not(.disabled):hover { background: var(--hover-bg); }
  .level-card:hover, .mode-card:hover:not(:disabled) { background: var(--hover-bg); }
}
.btn-primary:focus-visible, .btn-secondary:focus-visible, .pause-btn:focus-visible, .fin-top:focus-visible,
.nav-btn:focus-visible, .q-list-item:focus-visible, .q-map-cell:focus-visible, .tool:focus-visible {
  outline: 2px solid var(--focus-contrast); outline-offset: 2px; box-shadow: 0 0 0 4px var(--orange);
}

@media (min-width: 1100px) {
  body {
    background:
      radial-gradient(75rem 38rem at 50% -8%, rgba(255, 153, 0, 0.16), transparent 60%),
      radial-gradient(50rem 30rem at 100% 100%, var(--page-glow), transparent 60%),
      var(--page-bg-xl);
    background-attachment: fixed;
  }
  .app { max-width: min(92vw, 78rem); }
  .content { padding: 1.6rem 2rem; }
  /* Pantallas de una sola columna: no se estiran a todo el ancho */
  #screenModeSelect, #screenQuestionList, #screenResults {
    max-width: 52rem;
    margin-inline: auto;
  }
  .home-grid { grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); }
  .hero { display: flex; }
  .quiz-layout { grid-template-columns: minmax(0, 1fr) 19rem; }
  .quiz-side { display: block; }
}

/* Oculto por defecto (reemplaza style="display:none", P1-SEC-02). El JS lo muestra con
   element.style.display (CSSOM, permitido por style-src 'self'), que gana a esta clase. */
.is-hidden { display: none; }

/* Aviso de examen oficial solo en inglés (P2-UX-18), dentro de la tarjeta del nivel. */
.english-notice { margin-top: 0.75rem; padding-top: 0.75rem; border-top: 1px dashed var(--border); display: flex; flex-direction: column; gap: 0.5rem; }
.english-notice.is-hidden { display: none; }
.english-notice-chip { align-self: flex-start; background: var(--orange); color: var(--on-orange); font-size: 0.75rem; font-weight: 800; letter-spacing: 0.5px; border-radius: 0.25rem; padding: 0.125rem 0.5rem; }
.welcome-card .english-notice-text { color: var(--text-soft); font-size: 0.75rem; }
.english-notice-actions { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; }
.english-notice-link { font-family: inherit; background: none; border: 0; color: var(--orange); font-size: 0.8125rem; font-weight: 700; text-decoration: underline; text-underline-offset: 0.2em; padding: 0; min-height: 2.75rem; display: inline-flex; align-items: center; cursor: pointer; -webkit-tap-highlight-color: transparent; }
.english-notice-link::after { content: "\00a0→" / ""; }
.english-notice-close { background: none; border: 1px solid var(--border); border-radius: 0.5rem; color: var(--text); cursor: pointer; display: inline-grid; place-items: center; min-height: 2.75rem; min-width: 2.75rem; }

/* Marcar preguntas (P2-UX-23): barra de herramientas, marca en el mapa y y hoja del mapa. */
.tools { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.5rem; }
.tool {
  min-height: 2.75rem; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.1rem;
  background: var(--card-bg); color: var(--text); border: 1px solid transparent; border-radius: 0.875rem;
  font: inherit; font-size: 0.75rem; font-weight: 700; cursor: pointer; position: relative;
}
.tool[aria-pressed="true"] { border-color: var(--orange); color: var(--text); }
.tool[aria-pressed="true"] svg { fill: currentColor; }
.tool-icon { display: grid; line-height: 0; }
.cell-flag { position: absolute; top: 1px; right: 1px; color: var(--orange); display: grid; line-height: 0; }
.cell-flag svg { fill: currentColor; }
.q-map-sheet { grid-template-columns: repeat(6, 1fr); gap: 0.5rem; margin-bottom: 0.75rem; }
.legend { display: flex; flex-wrap: wrap; gap: 0.25rem 0.875rem; color: var(--text-muted); font-size: 0.75rem; margin-top: 0.75rem; }
.legend span { display: inline-flex; align-items: center; gap: 0.3rem; }
.legend svg { fill: currentColor; }
.legend .sw { width: 0.75rem; height: 0.75rem; border: 1px solid var(--orange); border-radius: 0.15rem; display: inline-block; }

/* Lista "Marcadas" (P2-UX-23). */
.flag-count { display: inline-grid; place-items: center; min-width: 1.25rem; height: 1.25rem; border-radius: 0.65rem; background: var(--orange); color: var(--on-orange); font-size: 0.75rem; font-weight: 800; padding: 0 0.3rem; }
.flag-count[hidden] { display: none; }
.tool .flag-count { position: absolute; top: 0.2rem; right: 0.35rem; }
.flagged-list { display: flex; flex-direction: column; gap: 0.6rem; margin-bottom: 0.75rem; }
.mrow { display: flex; align-items: center; gap: 0.75rem; min-height: 3.25rem; background: var(--nav-bg); border-radius: 0.625rem; padding: 0.4rem 0.5rem 0.4rem 0.875rem; border-left: 0.25rem solid var(--orange); }
.mrow b { color: var(--text); font-size: 0.875rem; }
.mrow small { display: block; color: var(--text-muted); font-size: 0.75rem; }
.mrow .btn-secondary { margin-left: auto; min-width: 2.75rem; }

/* P2-WEB-13: simulator screens with the home palette (grey cards, blue frame, outline for the chosen option) */

.welcome-card, .level-card, .mode-card, .question-card, .score-card, .option, .pause-note, .mrow { border-left: 0; }
.welcome-card, .level-card, .mode-card, .question-card, .score-card, .stat-card, .exam-group, .quiz-side, .review-item, .q-list-item { border-radius: 1.25rem; }

/* Titulos de seccion como los h2 del home. */
.provider-header svg { color: var(--text-muted); }
.welcome-card h2, .review h3 { color: var(--text); font-size: clamp(1.25rem, 1rem + 1vw, 1.5rem); font-weight: 400; letter-spacing: 0.02em; }
.score-title, .question-label, .quiz-side h3 { color: var(--text-muted); letter-spacing: 0.12em; }

/* Iconos y etiquetas en tinta; insignias como las pildoras del home (fondo --vt-band-2). */
.level-meta, .mode-desc { color: var(--text-soft); }

/* Opciones del modo */
.exam-options legend, .exam-group-title { color: var(--text-muted); letter-spacing: 0.12em; }

/* Botones: principal como .pill-cta y secundarios como .pill-ghost del home. */
body.sim .btn-primary, body.sim .btn-secondary { border-radius: 99px; min-height: 2.75rem; }
body.sim .btn-secondary { background: transparent; border: 1px solid var(--text-muted); color: var(--text); }
body.sim .fin-top, body.sim .pause-btn { background: transparent; border: 1px solid var(--text-muted); color: var(--text); border-radius: 99px; }
body.sim .btn-secondary:active, body.sim .fin-top:active, body.sim .pause-btn:active { background: var(--hover-bg); color: var(--text); }
body.sim .btn-secondary:disabled:active { background: transparent; color: var(--text); }
@media (hover: hover) {
  body.sim .btn-secondary:hover:not(:disabled), body.sim .pause-btn:hover, body.sim .fin-top:hover { background: var(--hover-bg); color: var(--text); border-color: var(--text); }
}
@media (min-width: 900px) { body.sim .btn-primary, body.sim .btn-secondary { border-radius: 99px; } }

/* Marco del examen en azul (continua el navbar y la banda). */
/* Barras del examen acordes al degradado del pie y de la banda (P2-WEB-17, opcion 2): la barra de tiempo es parte de
   la banda en reposo y se llena de azul al pegarse arriba; la barra de control es el pie del sitio en pequeno. */
body.sim .total-timer-bar { background: var(--vt-band); border-top: 0; }
.total-timer-bar::after, .footer::before { content: ""; position: absolute; left: 0; right: 0; pointer-events: none; }
.total-timer-bar::after { top: 100%; height: 1.75rem; background: linear-gradient(to bottom, var(--vt-band) 0%, color-mix(in oklab, var(--vt-band) 98%, transparent) 8.3%, color-mix(in oklab, var(--vt-band) 92.6%, transparent) 16.7%, color-mix(in oklab, var(--vt-band) 84.4%, transparent) 25.0%, color-mix(in oklab, var(--vt-band) 74.1%, transparent) 33.3%, color-mix(in oklab, var(--vt-band) 62.4%, transparent) 41.7%, color-mix(in oklab, var(--vt-band) 50%, transparent) 50.0%, color-mix(in oklab, var(--vt-band) 37.6%, transparent) 58.3%, color-mix(in oklab, var(--vt-band) 25.9%, transparent) 66.7%, color-mix(in oklab, var(--vt-band) 15.6%, transparent) 75.0%, color-mix(in oklab, var(--vt-band) 7.4%, transparent) 83.3%, color-mix(in oklab, var(--vt-band) 2%, transparent) 91.7%, transparent 100%); }
@supports (animation-timeline: scroll()) {
  .total-timer-bar { animation: timer-bar-fill linear both; animation-timeline: scroll(root); animation-range: 0 12rem; }
  .total-timer-bar::after { animation: timer-bar-show linear both; animation-timeline: scroll(root); animation-range: 6rem 12rem; }
  @keyframes timer-bar-fill { from { background-color: transparent; } to { background-color: var(--vt-band); } }
  @keyframes timer-bar-show { from { opacity: 0; } to { opacity: 1; } }
}
body.sim .footer {
  border-top: 0;
  background:
    radial-gradient(60% 90% at 50% 100%, var(--vt-glow), transparent 100%),
    linear-gradient(180deg, var(--dark-bg) 0%, var(--vt-band) 55%, var(--vt-band) 100%);
  padding-top: 1rem;
}
@media (min-width: 900px) { body.sim .footer { padding-top: 1.25rem; } }
.footer::before { bottom: 100%; height: 1.5rem; background: linear-gradient(to top, var(--dark-bg) 0%, color-mix(in oklab, var(--dark-bg) 98%, transparent) 8.3%, color-mix(in oklab, var(--dark-bg) 92.6%, transparent) 16.7%, color-mix(in oklab, var(--dark-bg) 84.4%, transparent) 25.0%, color-mix(in oklab, var(--dark-bg) 74.1%, transparent) 33.3%, color-mix(in oklab, var(--dark-bg) 62.4%, transparent) 41.7%, color-mix(in oklab, var(--dark-bg) 50%, transparent) 50.0%, color-mix(in oklab, var(--dark-bg) 37.6%, transparent) 58.3%, color-mix(in oklab, var(--dark-bg) 25.9%, transparent) 66.7%, color-mix(in oklab, var(--dark-bg) 15.6%, transparent) 75.0%, color-mix(in oklab, var(--dark-bg) 7.4%, transparent) 83.3%, color-mix(in oklab, var(--dark-bg) 2%, transparent) 91.7%, transparent 100%); }
body.sim .content { padding-bottom: 1.5rem; }

/* Opciones: gris como las tarjetas; elegida con contorno naranja de 2px. */
.option.selected .option-letter { color: var(--orange); }

/* La insignia baja a su propia linea debajo del nombre: en el telefono el nombre ya no se parte en 4 lineas. */
.level-card .level-info { flex: 1 1 calc(100% - 4.25rem); }
.level-card .level-beta { margin-left: 3.25rem; }
.level-card .level-beta + .level-badge { margin-left: -0.25rem; }
.level-card .level-info + .level-badge { margin-left: 3.25rem; }
@media (min-width: 900px) { .level-card .level-beta, .level-card .level-info + .level-badge { margin-left: 3.75rem; } }

.level-card, .mode-card, .option, .btn-secondary, .pause-btn, .nav-btn { transition-property: background-color, border-color, color, box-shadow, transform; }