/* Estilos de Ayuda y formación (guía, curso, puesta en marcha).
   Solo tokens de app.css (--primary, --text-muted, --glass-*…): claro y oscuro salen solos.
   Regla Crystal: el cristal va en el marco y las tarjetas de entrada; la lectura (lecciones, tablas,
   preguntas) sobre superficie casi opaca para que se lea bien. */

/* ── Base ─────────────────────────────────────────────────────────────────── */
.help-page { max-width: 1120px; margin: 0 auto; padding: 4px 0 56px; }
.help-guide-page { max-width: 1240px; }
.help-lesson-column { max-width: 860px; margin: 0 auto; }
.help-sr { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.help-quiet { color: var(--text-muted); font-size: .84rem; margin: 16px 0 0; }
.help-dash { color: var(--text-faint); }

.help-title { margin: 0; font-size: 2.125rem; font-weight: 800; letter-spacing: -.03em; line-height: 1.15; color: var(--text); }
.help-title-sm { margin: 0; font-size: 1.4rem; font-weight: 800; letter-spacing: -.02em; color: var(--text); }
.help-lead { margin: 8px 0 0; max-width: 64ch; color: var(--text-muted); font-size: 1.02rem; line-height: 1.6; }
.help-eyebrow { margin: 0 0 4px; font-size: .72rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--primary-soft); }
.help-sec-title { display: flex; align-items: center; gap: 8px; margin: 0 0 10px; font-size: .95rem; font-weight: 700; color: var(--text); }
.help-sec-title .mud-icon-root { color: var(--primary-soft); }

.help-hero { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 18px 28px; margin: 10px 0 22px; }
.help-hero-text { flex: 1 1 420px; min-width: 0; }
.help-hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; margin-top: 14px; }
.help-hero > .help-hero-actions { margin-top: 0; }
.help-course-hero .help-hero-progress { display: flex; flex-direction: column; align-items: center; gap: 6px; }

/* Migas */
.help-crumbs { margin: 4px 0 6px; font-size: .82rem; }
.help-crumbs ol { display: flex; flex-wrap: wrap; align-items: center; margin: 0; padding: 0; list-style: none; }
.help-crumbs li + li::before { content: "›"; margin: 0 8px; color: var(--text-faint); }
.help-crumbs a { color: var(--primary-soft); text-decoration: none; font-weight: 600; }
.help-crumbs a:hover { text-decoration: underline; }
.help-crumbs [aria-current] { color: var(--text-muted); }

/* Buscador */
.help-search { flex: 1 1 360px; max-width: 520px; min-width: 0; }
.help-search-wide { max-width: 760px; margin-bottom: 18px; }
.help-search .mud-input-control { background: var(--input-bg); border-radius: var(--radius-md); }

/* Chips, barras y anillos */
.help-chip { display: inline-flex; align-items: center; gap: 4px; padding: 3px 10px; border-radius: var(--radius-pill); font-size: .74rem; font-weight: 600; line-height: 1.4; color: var(--text-muted); background: var(--wash-primary-faint); }
.help-chip-ok { color: var(--success); background: color-mix(in srgb, var(--success) 14%, transparent); }
.help-chip-warn { color: var(--warning); background: color-mix(in srgb, var(--warning) 15%, transparent); }
.help-chip .mud-icon-root { font-size: 1rem; }

.help-bar { height: 8px; border-radius: var(--radius-pill); background: color-mix(in srgb, var(--text) 11%, transparent); overflow: hidden; }
.help-bar > span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--primary), var(--primary-soft)); }
.help-progress { display: flex; flex-direction: column; gap: 6px; margin-top: 6px; }
.help-progress-text { display: inline-flex; align-items: center; gap: 4px; font-size: .8rem; color: var(--text-muted); font-variant-numeric: tabular-nums; }
.help-progress-text .mud-icon-root { color: var(--success); font-size: 1rem; }

.help-ring { --ring: var(--primary); position: relative; flex: none; display: grid; place-items: center; width: 92px; height: 92px; border-radius: 50%;
    background: conic-gradient(var(--ring) calc(var(--p) * 1%), color-mix(in srgb, var(--text) 12%, transparent) 0); }
.help-ring::before { content: ""; position: absolute; inset: 9px; border-radius: 50%; background: var(--surface); }
.help-ring-num { position: relative; font-size: 1.55rem; font-weight: 800; letter-spacing: -.03em; color: var(--text); }
.help-ring-num small { font-size: .75rem; font-weight: 700; margin-left: 1px; color: var(--text-muted); }

/* ── Tarjetas de entrada (hub, índice de la guía, curso) ──────────────────── */
.help-tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; margin-top: 8px; }
.help-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.help-tile, .help-card { position: relative; display: flex; flex-direction: column; align-items: flex-start; gap: 8px; padding: 22px; text-align: left; color: var(--text); font: inherit; }
.help-card { padding: 18px 20px; }
button.help-card { cursor: pointer; width: 100%; }
.help-tile-course { grid-column: 1 / -1; }
@media (min-width: 900px) { .help-tile-course { grid-column: span 2; } }

.help-tile-icon, .help-card-icon, .help-module-icon { flex: none; display: grid; place-items: center; width: 48px; height: 48px; border-radius: var(--radius-md); color: var(--primary-soft); background: var(--wash-primary-strong); }
.help-tile-icon .mud-icon-root, .help-card-icon .mud-icon-root, .help-module-icon .mud-icon-root { font-size: 1.6rem; }
.help-module-icon { width: 56px; height: 56px; border-radius: var(--radius-lg); }
.help-tile-title, .help-card-title { margin: 4px 0 0; font-size: 1.1rem; font-weight: 700; letter-spacing: -.01em; line-height: 1.3; color: var(--text); }
.help-tile-text, .help-card-text { margin: 0; color: var(--text-muted); font-size: .9rem; line-height: 1.5; }
.help-card-meta { margin-top: auto; padding-top: 4px; font-size: .78rem; font-weight: 600; color: var(--text-muted); }

/* El título es el enlace y se estira sobre toda la tarjeta; lo demás (botones) queda por encima. */
.help-tile-link { color: inherit; text-decoration: none; }
.help-tile-link::after { content: ""; position: absolute; inset: 0; border-radius: inherit; }
.help-tile-link:focus-visible { outline: none; }
.help-tile-link:focus-visible::after { outline: 2px solid var(--focus-line); outline-offset: 2px; }
.help-tile-actions { position: relative; z-index: 1; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; margin-top: 4px; }
.help-tile-next { font-size: .82rem; color: var(--text-muted); }
.help-tile .help-progress, .help-card .help-progress { width: 100%; }

@media (hover: hover) and (pointer: fine) {
    .help-tile, .help-card { transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out); }
    .help-tile:hover, .help-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-4), var(--glass-edge); }
}
.help-card.is-done { border-color: color-mix(in srgb, var(--success) 45%, var(--glass-border)); }
.help-ribbon { position: absolute; top: 12px; right: 12px; z-index: 1; display: inline-flex; align-items: center; gap: 3px; padding: 2px 9px 2px 6px; border-radius: var(--radius-pill); font-size: .7rem; font-weight: 700; color: var(--accent-strong); background: color-mix(in srgb, var(--accent) 20%, transparent); }
.help-ribbon .mud-icon-root { font-size: .9rem; color: var(--accent); }
.help-card:has(.help-ribbon) .help-card-icon { margin-top: 18px; }

.help-group { margin-top: 30px; }
.help-group-title { margin: 0 0 12px; font-size: .78rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--text-muted); }

/* Panel final / test del capítulo / presentación de un test */
.help-final, .help-intro { display: flex; flex-wrap: wrap; align-items: center; gap: 18px 22px; padding: 24px; margin-top: 14px; border-radius: var(--radius-xl); }
.help-final.is-done { border-color: color-mix(in srgb, var(--success) 45%, var(--glass-border)); }
.help-final-text, .help-intro-text { flex: 1 1 320px; min-width: 0; }
.help-final-text .help-card-title { margin-top: 0; }
.help-final-best { margin: 10px 0 0; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: .9rem; }
.help-final-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.help-intro { margin-top: 18px; align-items: flex-start; }
.help-module-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; margin-top: 16px; }

/* Estados vacíos */
.help-empty { display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 56px 24px; text-align: center; color: var(--text-muted); }
.help-empty > .mud-icon-root { font-size: 3rem; color: var(--primary-tint); opacity: .75; }
.help-empty h1, .help-empty h2 { margin: 0; color: var(--text); }
.help-empty h2 { font-size: 1.3rem; font-weight: 800; letter-spacing: -.02em; }
.help-empty p { margin: 0; max-width: 52ch; line-height: 1.55; }
.help-empty-small { padding: 24px; }
.help-empty-big { max-width: 640px; margin: 28px auto 0; padding: 44px 32px; border-radius: var(--radius-xl); }
.help-empty-big .help-card-icon { width: 64px; height: 64px; border-radius: var(--radius-lg); }
.help-empty-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 10px; }

/* Resultados de búsqueda */
.help-results { margin: 0 0 22px; padding: 8px; border-radius: var(--radius-lg); border: 1px solid var(--glass-border); background: var(--glass-data); box-shadow: var(--shadow-2); }
.help-results-count { margin: 6px 12px 4px; font-size: .78rem; font-weight: 600; color: var(--text-muted); }
.help-hit { display: grid; gap: 2px; padding: 11px 14px; border-radius: var(--radius-md); text-decoration: none; color: var(--text); }
.help-hit:hover, .help-hit:focus-visible { background: var(--row-hover); }
.help-hit-module { font-size: .68rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--primary-soft); }
.help-hit-title { font-size: .98rem; }
.help-hit-snippet { color: var(--text-muted); font-size: .86rem; line-height: 1.45; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.help-hit-all { display: inline-flex; align-items: center; gap: 4px; margin: 6px 14px 8px; font-size: .86rem; font-weight: 600; color: var(--primary-soft); text-decoration: none; }
.help-hit-all:hover { text-decoration: underline; }
.help-no-results { display: flex; gap: 14px; padding: 16px 18px; color: var(--text-muted); }
.help-no-results .mud-icon-root { flex: none; font-size: 2rem; color: var(--primary-tint); }
.help-no-results p { margin: 4px 0 0; line-height: 1.55; }
.help-no-results a { color: var(--primary-soft); font-weight: 600; }

/* Lo último que viste */
.help-recent { margin-top: 34px; }
.help-recent-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 10px; }
.help-recent-item { display: flex; flex-direction: column; gap: 2px; padding: 12px 14px; border-radius: var(--radius-md); border: 1px solid var(--glass-border); background: var(--glass-data); text-decoration: none; color: var(--text); font-size: .9rem; }
.help-recent-item:hover { border-color: var(--primary-tint); }
.help-recent-module { font-size: .68rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--text-muted); }

/* ── Módulo (cabecera) ────────────────────────────────────────────────────── */
.help-module-head { display: flex; gap: 20px; align-items: flex-start; padding: 26px 28px; margin: 6px 0 4px; border-radius: var(--radius-xl); border: 1px solid var(--glass-border); background: var(--glass-data); box-shadow: var(--shadow-2), var(--glass-edge); }
.help-module-text { flex: 1; min-width: 0; }
.help-module-text .help-p { margin-top: 10px; }
.help-module-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }

/* ── Guía: índice lateral + lectura ───────────────────────────────────────── */
.help-guide-layout { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 28px; align-items: start; margin-top: 8px; }
.help-toc { position: sticky; top: calc(var(--mud-appbar-height, 56px) + 16px); max-height: calc(100vh - var(--mud-appbar-height, 56px) - 32px); overflow-y: auto; }
.help-toc-toggle { display: none; }
.help-toc-title { margin: 0 0 8px; padding: 0 10px; font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--text-muted); }
.help-toc ol { margin: 0; padding: 0; list-style: none; }
.help-toc a { display: flex; align-items: flex-start; gap: 10px; padding: 8px 10px; border-left: 2px solid transparent; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; font-size: .86rem; line-height: 1.35; color: var(--text-muted); text-decoration: none; transition: background-color var(--dur-press) var(--ease-standard), color var(--dur-press) var(--ease-standard); }
.help-toc a:hover { background: var(--row-hover); color: var(--text); }
.help-toc a.is-active { border-left-color: var(--primary); background: var(--wash-primary-soft); color: var(--text); font-weight: 700; }
.help-toc-n { flex: none; display: grid; place-items: center; width: 20px; height: 20px; border-radius: 50%; font-size: .68rem; font-weight: 700; background: var(--wash-primary-strong); color: var(--primary-soft); }
.help-toc a.is-active .help-toc-n { background: var(--primary); color: var(--on-primary); }

.help-guide-main { min-width: 0; }
.help-topic-section { margin-top: 24px; scroll-margin-top: calc(var(--mud-appbar-height, 56px) + 16px); }

@media (max-width: 959.98px) {
    .help-guide-layout { grid-template-columns: minmax(0, 1fr); gap: 12px; }
    .help-toc { position: sticky; top: calc(var(--mud-appbar-height, 56px) + 4px); z-index: 4; max-height: none; overflow: visible; }
    .help-toc-toggle { display: flex; align-items: center; justify-content: space-between; width: 100%; padding: 11px 16px; border: 1px solid var(--glass-border); border-radius: var(--radius-md); background: var(--glass-float); -webkit-backdrop-filter: var(--glass-filter); backdrop-filter: var(--glass-filter); color: var(--text); font: inherit; font-weight: 700; font-size: .9rem; cursor: pointer; box-shadow: var(--shadow-2); }
    .help-toc-panel { display: none; margin-top: 6px; padding: 10px 6px; max-height: 60vh; overflow-y: auto; border: 1px solid var(--glass-border); border-radius: var(--radius-md); background: var(--glass-float); -webkit-backdrop-filter: var(--glass-filter); backdrop-filter: var(--glass-filter); box-shadow: var(--shadow-3); }
    .help-toc-panel.is-open { display: block; }
    .help-toc-title { display: none; }
}

/* ── Lección ──────────────────────────────────────────────────────────────── */
.help-topic { padding: 30px 34px 34px; border-radius: var(--radius-xl); border: 1px solid var(--glass-border); background: var(--glass-data); -webkit-backdrop-filter: var(--glass-filter); backdrop-filter: var(--glass-filter); box-shadow: var(--shadow-2), var(--glass-edge); color: var(--text); }
.help-topic-head { margin-bottom: 18px; }
.help-topic-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin-bottom: 8px; }
.help-level { display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: var(--radius-pill); font-size: .72rem; font-weight: 700; letter-spacing: .02em; color: var(--success); background: color-mix(in srgb, var(--success) 14%, transparent); }
.help-level::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.help-level-intermedio { color: var(--info); background: color-mix(in srgb, var(--info) 14%, transparent); }
.help-level-avanzado { color: var(--warning); background: color-mix(in srgb, var(--warning) 16%, transparent); }
.help-minutes { display: inline-flex; align-items: center; gap: 3px; font-size: .8rem; color: var(--text-muted); font-variant-numeric: tabular-nums; }
.help-topic-module { font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--text-muted); }
.help-topic-title { margin: 0; font-size: 1.65rem; font-weight: 800; letter-spacing: -.02em; line-height: 1.2; color: var(--text); }
h1.help-topic-title { font-size: 2rem; letter-spacing: -.03em; }
.help-topic-title:focus { outline: none; }
.help-topic-summary { margin: 8px 0 0; color: var(--text-muted); font-size: 1rem; line-height: 1.55; max-width: 70ch; }
.help-topic-actions { display: flex; flex-wrap: wrap; gap: 8px 10px; margin-top: 14px; }

.help-objectives { margin: 0 0 18px; padding: 14px 18px; border-radius: var(--radius-md); border-left: 3px solid var(--primary); background: var(--wash-primary-faint); }
.help-objectives .help-sec-title { margin-bottom: 6px; }
.help-objectives ul, .help-recap ul, .help-mistakes ul { margin: 0; padding: 0; list-style: none; }
.help-objectives li { position: relative; padding: 3px 0 3px 18px; line-height: 1.5; }
.help-objectives li::before { content: ""; position: absolute; left: 2px; top: .85em; width: 6px; height: 6px; border-radius: 50%; background: var(--primary-soft); }

/* Bloques */
.help-blocks { display: flex; flex-direction: column; gap: 16px; }
.help-p { margin: 0; max-width: 76ch; font-size: .96rem; line-height: 1.7; color: var(--text); }
.help-h { margin: 12px 0 0; font-size: 1.15rem; font-weight: 700; letter-spacing: -.01em; color: var(--text); }
.help-block-title { margin: 0 0 10px; font-size: .92rem; font-weight: 700; color: var(--text); }
.help-list { margin: 0; padding-left: 22px; line-height: 1.65; }
.help-list li { margin: 3px 0; padding-left: 2px; }
.help-list li::marker { color: var(--primary-soft); }

.help-steps { list-style: none; counter-reset: step; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 14px; }
.help-steps > li { position: relative; counter-increment: step; min-height: 32px; padding-left: 46px; line-height: 1.65; }
.help-steps > li::before { content: counter(step); position: absolute; left: 0; top: -2px; display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; font-size: .85rem; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--on-primary); background: var(--primary); box-shadow: var(--shadow-primary); }
.help-steps > li:not(:last-child)::after { content: ""; position: absolute; left: 15px; top: 34px; bottom: -14px; width: 2px; border-radius: 2px; background: color-mix(in srgb, var(--primary) 22%, transparent); }

/* Recuadros de color */
.help-callout { --c: var(--info); display: flex; gap: 12px; padding: 14px 16px; border-radius: var(--radius-md); border: 1px solid color-mix(in srgb, var(--c) 38%, transparent); background: color-mix(in srgb, var(--c) 10%, transparent); }
.help-callout-tip { --c: var(--success); }
.help-callout-warning { --c: var(--warning); }
.help-callout-note { --c: var(--info); }
.help-callout-icon { flex: none; color: var(--c); }
.help-callout-body { min-width: 0; }
.help-callout-title { display: block; font-size: .9rem; font-weight: 700; color: var(--text); }
.help-callout-body p { margin: 2px 0 0; font-size: .92rem; line-height: 1.6; color: var(--text); }
.help-callout > .help-callout-body > .help-callout-title + p { margin-top: 3px; }

/* Tablas */
.help-table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-md); background: color-mix(in srgb, var(--surface) 82%, transparent); }
.help-fields-table, .help-table { width: 100%; border-collapse: collapse; font-size: .88rem; }
.help-fields-table th, .help-table th { padding: 10px 14px; text-align: left; white-space: nowrap; font-size: .7rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--text-muted); background: var(--glass-data-head); border-bottom: 1px solid var(--border-strong); }
.help-fields-table td, .help-table td { padding: 11px 14px; vertical-align: top; line-height: 1.5; border-top: 1px solid var(--border); }
.help-fields-table tbody tr:first-child td, .help-table tbody tr:first-child td { border-top: 0; }
.help-fields-table tbody tr:hover td, .help-table tbody tr:hover td { background: var(--row-hover); }
.help-table { min-width: 420px; }
.help-fields-table .c-num { width: 44px; text-align: center; }
.help-num { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; font-size: .76rem; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--primary-soft); background: var(--wash-primary-strong); }
.help-field-name { font-weight: 700; color: var(--text); }
.help-req { margin-left: 3px; font-weight: 800; color: var(--error); }
.help-kind { display: block; width: fit-content; margin-top: 5px; padding: 1px 9px; border-radius: var(--radius-pill); font-size: .68rem; font-weight: 600; color: var(--text-muted); background: var(--wash-primary-faint); }
.help-kind-button { color: var(--accent-strong); background: var(--wash-accent-strong); }
.help-example { display: inline-block; padding-left: 9px; border-left: 2px solid var(--accent); color: var(--text); }
.help-options { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 6px; }
.help-option { padding: 1px 9px; border: 1px solid var(--border-strong); border-radius: var(--radius-pill); font-size: .76rem; color: var(--text); }
.help-notes { color: var(--text-muted); font-size: .85rem; line-height: 1.5; }

@media (max-width: 760px) {
    .help-fields-table, .help-fields-table tbody { display: block; }
    .help-fields-table thead { display: none; }
    .help-fields-table tr { display: grid; grid-template-columns: 30px minmax(0, 1fr); column-gap: 10px; padding: 14px; border-top: 1px solid var(--border); }
    .help-fields-table tbody tr:first-child { border-top: 0; }
    .help-fields-table td { display: block; grid-column: 1 / -1; padding: 5px 0; border: 0; }
    .help-fields-table td.c-num { grid-column: 1; grid-row: 1; padding: 0; text-align: left; }
    .help-fields-table td.c-label { grid-column: 2; grid-row: 1; padding: 0 0 4px; }
    .help-fields-table td.is-empty { display: none; }
    .help-fields-table td::before { content: attr(data-label); display: block; margin-bottom: 1px; font-size: .66rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--text-faint); }
    .help-fields-table td.c-num::before, .help-fields-table td.c-label::before { display: none; }
    .help-fields-table tbody tr:hover td { background: transparent; }
}

/* Capturas */
.help-shot { margin: 0; }
.help-shot-btn { position: relative; display: block; max-width: 100%; padding: 0; overflow: hidden; border: 1px solid var(--border-strong); border-radius: var(--radius-md); background: #fff; box-shadow: var(--shadow-2); cursor: zoom-in; font: inherit; }
.help-shot-btn img { display: block; max-width: 100%; height: auto; }
.help-shot-zoom { position: absolute; right: 10px; bottom: 10px; display: inline-flex; align-items: center; gap: 4px; padding: 4px 11px 4px 8px; border-radius: var(--radius-pill); font-size: .76rem; font-weight: 600; color: var(--text); background: var(--glass-float); -webkit-backdrop-filter: var(--glass-filter); backdrop-filter: var(--glass-filter); box-shadow: var(--shadow-2); opacity: 0; transition: opacity var(--dur-base) var(--ease-out); }
.help-shot-btn:hover .help-shot-zoom, .help-shot-btn:focus-visible .help-shot-zoom { opacity: 1; }
@media (hover: none) { .help-shot-zoom { opacity: 1; } }
.help-shot figcaption { margin-top: 8px; font-size: .82rem; line-height: 1.45; color: var(--text-muted); }
.help-shot-placeholder { display: flex; align-items: center; justify-content: center; gap: 8px; min-height: 84px; padding: 12px; border: 1px dashed var(--border-strong); border-radius: var(--radius-md); font-size: .82rem; color: var(--text-faint); background: var(--wash-primary-faint); }
.help-zoom-img { display: block; max-width: 100%; height: auto; margin: 0 auto; border-radius: var(--radius-sm); }

/* Práctica guiada */
.help-practice { margin-top: 24px; padding: 22px 24px; border-radius: var(--radius-lg); border: 1px solid color-mix(in srgb, var(--accent) 48%, transparent); background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 14%, transparent), color-mix(in srgb, var(--primary) 7%, transparent)); box-shadow: inset 4px 0 0 var(--accent); }
.help-practice-tag { display: inline-flex; align-items: center; gap: 5px; padding: 3px 11px 3px 8px; border-radius: var(--radius-pill); font-size: .72rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--text); background: color-mix(in srgb, var(--accent) 26%, transparent); }
.help-practice-tag .mud-icon-root { color: var(--accent-strong); font-size: 1rem; }
.help-practice-title { margin: 10px 0 0; font-size: 1.15rem; font-weight: 800; letter-spacing: -.01em; color: var(--text); }
.help-practice-goal { margin: 6px 0 16px; color: var(--text-muted); line-height: 1.55; }
.help-practice-result { display: flex; gap: 10px; margin-top: 18px; padding: 12px 14px; border-radius: var(--radius-md); background: color-mix(in srgb, var(--success) 12%, transparent); border: 1px solid color-mix(in srgb, var(--success) 32%, transparent); }
.help-practice-result > .mud-icon-root { flex: none; color: var(--success); }
.help-practice-result strong { font-size: .88rem; }
.help-practice-result p { margin: 2px 0 0; font-size: .92rem; line-height: 1.55; }

/* Errores típicos y resumen */
.help-mistakes { margin-top: 24px; }
.help-mistakes li { margin-bottom: 8px; padding: 10px 14px; border-left: 3px solid var(--warning); border-radius: 0 var(--radius-md) var(--radius-md) 0; background: var(--tint-raised); font-size: .92rem; line-height: 1.55; }
.help-mistakes .help-sec-title .mud-icon-root { color: var(--warning); }
.help-recap { margin-top: 24px; padding: 18px 22px; border-radius: var(--radius-lg); background: var(--wash-primary-faint); }
.help-recap li { position: relative; padding: 4px 0 4px 24px; line-height: 1.55; }
.help-recap li::before { content: "✓"; position: absolute; left: 2px; top: 4px; font-weight: 800; color: var(--success); }

/* ── Tests ────────────────────────────────────────────────────────────────── */
.help-quiz { margin-top: 26px; padding: 26px 30px 28px; border-radius: var(--radius-xl); border: 1px solid var(--glass-border); background: var(--glass-data); -webkit-backdrop-filter: var(--glass-filter); backdrop-filter: var(--glass-filter); box-shadow: var(--shadow-2), var(--glass-edge); }
.help-test-page .help-quiz, .help-test-page .help-intro { max-width: 820px; margin-left: auto; margin-right: auto; }
.help-quiz-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 6px 16px; margin-bottom: 8px; }
.help-quiz-head .help-sec-title { margin-bottom: 2px; }
.help-quiz-sub { flex-basis: 100%; margin: 0; font-size: .86rem; color: var(--text-muted); }
.help-quiz-title { margin: 0; font-size: 1.15rem; font-weight: 800; letter-spacing: -.01em; color: var(--text); }
.help-quiz-count { font-size: .86rem; color: var(--text-muted); font-variant-numeric: tabular-nums; }
.help-quiz-step .help-bar { margin: 6px 0 24px; }
.help-quiz-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; margin-top: 10px; }
.help-quiz-nav { margin-top: 22px; }
.help-quiz-nav .mud-spacer { flex: 1 1 auto; }
.help-quiz-note { font-size: .82rem; color: var(--text-muted); }

.help-q { min-width: 0; margin: 0 0 24px; padding: 0; border: 0; }
.help-q-text { display: block; width: 100%; margin: 0 0 12px; padding: 0; font-size: 1.04rem; font-weight: 700; line-height: 1.5; color: var(--text); }
.help-q-n { display: inline-grid; place-items: center; width: 28px; height: 28px; margin-right: 10px; border-radius: 50%; vertical-align: middle; font-size: .8rem; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--primary-soft); background: var(--wash-primary-strong); }
.help-q-hint { margin: -4px 0 10px; font-size: .84rem; font-style: italic; color: var(--text-muted); }
.help-q-options { display: flex; flex-direction: column; gap: 9px; }
.help-opt { position: relative; display: flex; align-items: flex-start; gap: 12px; padding: 12px 14px; border: 1.5px solid var(--border-strong); border-radius: var(--radius-md); background: var(--tint-raised); color: var(--text); line-height: 1.5; cursor: pointer; transition: border-color var(--dur-press) var(--ease-standard), background-color var(--dur-press) var(--ease-standard); }
.help-opt input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.help-opt:has(input:focus-visible) { outline: 2px solid var(--focus-line); outline-offset: 2px; }
.help-opt-mark { position: relative; flex: none; width: 20px; height: 20px; margin-top: 1px; border: 2px solid var(--border-strong); border-radius: 50%; background: var(--surface); transition: border-color var(--dur-press) var(--ease-standard), background-color var(--dur-press) var(--ease-standard), box-shadow var(--dur-press) var(--ease-standard); }
.help-opt input[type="checkbox"] + .help-opt-mark { border-radius: 6px; }
.help-opt input:checked + .help-opt-mark { border-color: var(--primary); background: var(--primary); box-shadow: inset 0 0 0 3.5px var(--surface); }
.help-opt input[type="checkbox"]:checked + .help-opt-mark { box-shadow: none; }
.help-opt input[type="checkbox"]:checked + .help-opt-mark::after { content: ""; position: absolute; left: 5px; top: 1px; width: 5px; height: 10px; border: solid var(--on-primary); border-width: 0 2px 2px 0; transform: rotate(45deg); }
.help-opt-text { flex: 1; min-width: 0; }
.help-opt.is-chosen { border-color: var(--primary); background: var(--wash-primary-soft); }
@media (hover: hover) and (pointer: fine) {
    .help-opt:hover { border-color: var(--primary-tint); }
}
.help-opt.is-right { border-color: var(--success); background: color-mix(in srgb, var(--success) 12%, transparent); }
.help-opt.is-bad { border-color: var(--error); background: color-mix(in srgb, var(--error) 10%, transparent); }
.help-opt.is-right .help-opt-mark { border-color: var(--success); }
.help-opt.is-bad .help-opt-mark { border-color: var(--error); }
.help-opt-flag { flex: none; margin-left: auto; }
.help-opt.is-right .help-opt-flag { color: var(--success); }
.help-opt.is-bad .help-opt-flag { color: var(--error); }
.help-q:disabled .help-opt, fieldset[disabled] .help-opt { cursor: default; }
fieldset[disabled] .help-opt input { cursor: default; }
.help-q-explain { --c: var(--warning); margin-top: 12px; padding: 12px 14px; border-radius: 0 var(--radius-md) var(--radius-md) 0; border-left: 3px solid var(--c); background: var(--tint-raised); font-size: .92rem; line-height: 1.55; }
.help-q.is-correct .help-q-explain { --c: var(--success); }
.help-q-explain p { margin: 3px 0 0; }
.help-q-lesson { display: inline-block; margin-top: 6px; font-size: .84rem; font-weight: 600; color: var(--primary-soft); }
.help-inline-summary { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-radius: var(--radius-md); background: var(--wash-primary-faint); font-size: .92rem; }
.help-inline-summary.is-perfect { background: color-mix(in srgb, var(--success) 14%, transparent); }
.help-inline-summary .mud-icon-root { color: var(--primary-soft); }
.help-inline-summary.is-perfect .mud-icon-root { color: var(--success); }

/* Resultado */
.help-result-hero { display: flex; flex-wrap: wrap; align-items: center; gap: 18px 26px; padding: 22px 24px; border-radius: var(--radius-lg); border: 1px solid color-mix(in srgb, var(--warning) 40%, transparent); background: color-mix(in srgb, var(--warning) 9%, transparent); }
.help-result-hero.is-pass { border-color: color-mix(in srgb, var(--success) 42%, transparent); background: color-mix(in srgb, var(--success) 10%, transparent); }
.help-result-hero.is-pass .help-ring { --ring: var(--success); }
.help-result-hero.is-fail .help-ring { --ring: var(--warning); }
.help-result-text { flex: 1 1 280px; min-width: 0; }
.help-result-text h2 { margin: 0; font-size: 1.55rem; font-weight: 800; letter-spacing: -.02em; color: var(--text); }
.help-result-text p { margin: 6px 0 0; line-height: 1.55; }
.help-result-best { color: var(--text-muted); font-size: .9rem; }
.help-result-error { color: var(--error); font-size: .88rem; }
.help-result-footer { margin-top: 14px; }
.help-result-links { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.help-result-hint { flex-basis: 100%; margin: 0; color: var(--text-muted); font-size: .9rem; }
.help-review-lessons { margin-top: 24px; }
.help-review-group { margin-bottom: 12px; }
.help-review-chapter { font-weight: 700; color: var(--text); text-decoration: none; }
.help-review-chapter:hover { text-decoration: underline; }
.help-review-links { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.help-review-links a { padding: 4px 12px; border: 1px solid var(--border-strong); border-radius: var(--radius-pill); font-size: .84rem; color: var(--primary-soft); text-decoration: none; background: var(--tint-raised); }
.help-review-links a:hover { border-color: var(--primary-tint); }
.help-review-title { margin-top: 30px; }

/* ── Lista de lecciones de un capítulo ────────────────────────────────────── */
.help-lessons { display: flex; flex-direction: column; gap: 8px; margin: 0; padding: 0; list-style: none; }
.help-lesson-row { position: relative; display: grid; grid-template-columns: 34px minmax(0, 1fr) auto; align-items: center; gap: 14px; padding: 14px 18px; border-radius: var(--radius-md); border: 1px solid var(--glass-border); background: var(--glass-data); box-shadow: var(--shadow-1); }
@media (hover: hover) and (pointer: fine) {
    .help-lesson-row { transition: transform var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out); }
    .help-lesson-row:hover { transform: translateY(-1px); border-color: var(--primary-tint); }
}
.help-lesson-check { display: grid; place-items: center; }
.help-lesson-check .mud-icon-root { font-size: 1.8rem; color: var(--success); }
.help-lesson-n { display: grid; place-items: center; width: 28px; height: 28px; border: 2px solid var(--border-strong); border-radius: 50%; font-size: .78rem; font-weight: 700; color: var(--text-muted); font-variant-numeric: tabular-nums; }
.help-lesson-main { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.help-lesson-link { font-weight: 700; color: var(--text); text-decoration: none; }
.help-lesson-link::after { content: ""; position: absolute; inset: 0; border-radius: inherit; }
.help-lesson-link:focus-visible { outline: none; }
.help-lesson-link:focus-visible::after { outline: 2px solid var(--focus-line); outline-offset: 2px; }
.help-lesson-summary { font-size: .86rem; color: var(--text-muted); line-height: 1.45; }
.help-lesson-meta { display: flex; align-items: center; gap: 10px; }
@media (max-width: 640px) {
    .help-lesson-row { grid-template-columns: 34px minmax(0, 1fr); }
    .help-lesson-meta { grid-column: 2; }
}

/* ── Completar lección y navegación ───────────────────────────────────────── */
.help-complete { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; margin-top: 26px; padding: 16px 22px; border-radius: var(--radius-lg); }
.help-complete.is-done { border-color: color-mix(in srgb, var(--success) 45%, var(--glass-border)); }
.help-complete-icon.mud-icon-root { flex: none; font-size: 2rem; color: var(--text-faint); }
.help-complete.is-done .help-complete-icon.mud-icon-root { color: var(--success); }
.help-complete-text { flex: 1 1 220px; display: flex; flex-direction: column; min-width: 0; }
.help-complete-text span { font-size: .86rem; color: var(--text-muted); }

.help-pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 22px; }
.help-pager-link { display: flex; flex-direction: column; gap: 2px; min-width: 0; padding: 14px 18px; border-radius: var(--radius-lg); border: 1px solid var(--glass-border); background: var(--glass-data); text-decoration: none; color: var(--text); box-shadow: var(--shadow-1); }
.help-pager-link.is-next { align-items: flex-end; text-align: right; grid-column: 2; }
.help-pager-link.is-test { border-color: var(--primary); background: var(--wash-primary-soft); }
.help-pager-dir { display: inline-flex; align-items: center; gap: 4px; font-size: .74rem; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; color: var(--primary-soft); }
.help-pager-sub { font-size: .8rem; color: var(--text-muted); }
@media (hover: hover) and (pointer: fine) {
    .help-pager-link { transition: transform var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out); }
    .help-pager-link:hover { transform: translateY(-1px); border-color: var(--primary-tint); }
}

/* ── Vídeos ───────────────────────────────────────────────────────────────── */
.help-video { margin: 0 0 22px; }
.help-video video { display: block; width: 100%; max-height: 70vh; border-radius: var(--radius-lg); background: #000; box-shadow: var(--shadow-3); }
.help-video-caption { display: flex; flex-direction: column; gap: 2px; margin-top: 10px; font-size: .9rem; }
.help-video-caption span { color: var(--text-muted); }
.help-video-card { gap: 6px; }
.help-video-card.is-playing { border-color: var(--primary); }
.help-video-thumb { display: grid; place-items: center; width: 100%; aspect-ratio: 16 / 9; border-radius: var(--radius-md); color: var(--primary-soft); background: linear-gradient(135deg, var(--wash-primary-strong), var(--wash-accent-strong)); }
.help-video-thumb .mud-icon-root { font-size: 3rem; }

/* ── Certificado ──────────────────────────────────────────────────────────── */
.help-diploma-wrap { container-type: inline-size; max-width: 940px; margin: 8px auto 0; }
.help-diploma { --paper: #FFFDF8; --ink: #2B2330; --gold: #A9762F; --plum: #6A2C70;
    aspect-ratio: 1.414 / 1; padding: 2.2cqw; border-radius: 6px; color: var(--ink); background: var(--paper); box-shadow: var(--shadow-4); }
.help-diploma-frame { display: flex; flex-direction: column; align-items: center; justify-content: space-evenly; height: 100%; padding: 2.2cqw 5cqw; text-align: center; border: .5cqw double var(--gold); background: radial-gradient(circle at 50% 0%, rgba(194, 144, 74, .10), transparent 60%); }
.help-diploma-mark { width: 5.4cqw; height: 5.4cqw; }
.help-diploma-brand { margin: 0; font-size: 1.5cqw; font-weight: 800; letter-spacing: .32em; text-transform: uppercase; color: var(--plum); }
.help-diploma-title { margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: 4.2cqw; font-weight: 700; letter-spacing: .02em; color: var(--ink); }
.help-diploma-small { margin: 0; font-size: 1.5cqw; letter-spacing: .08em; text-transform: uppercase; color: #6E6578; }
.help-diploma-name { margin: 0; padding: 0 3cqw .6cqw; max-width: 100%; overflow-wrap: anywhere; font-family: Georgia, "Times New Roman", serif; font-size: 5.4cqw; font-style: italic; font-weight: 700; line-height: 1.15; color: var(--plum); border-bottom: .15cqw solid var(--gold); }
.help-diploma-text { margin: 0; max-width: 62cqw; font-size: 1.8cqw; line-height: 1.55; color: var(--ink); }
.help-diploma-foot { display: grid; grid-template-columns: 1fr auto 1fr; align-items: end; gap: 3cqw; width: 100%; font-size: 1.6cqw; }
.help-diploma-foot > div { display: flex; flex-direction: column; gap: .3cqw; }
.help-diploma-foot > div:first-child { align-items: flex-start; text-align: left; }
.help-diploma-foot > div:last-child { align-items: flex-end; text-align: right; }
.help-diploma-label { font-size: 1.2cqw; letter-spacing: .08em; text-transform: uppercase; color: #6E6578; }
.help-diploma-seal { display: grid; place-items: center; width: 7cqw; height: 7cqw; border-radius: 50%; color: #fff; background: radial-gradient(circle at 35% 30%, #D8A95F, var(--gold)); box-shadow: 0 .4cqw 1.2cqw rgba(169, 118, 47, .45); }
.help-diploma-seal .mud-icon-root { font-size: 4cqw; }
@container (max-width: 600px) {
    .help-diploma { aspect-ratio: auto; padding: 10px; }
    .help-diploma-frame { gap: 12px; padding: 22px 14px; border-width: 4px; }
    .help-diploma-mark { width: 40px; height: 40px; }
    .help-diploma-brand { font-size: .72rem; }
    .help-diploma-title { font-size: 1.5rem; }
    .help-diploma-small { font-size: .74rem; }
    .help-diploma-name { font-size: 1.7rem; padding: 0 8px 4px; border-bottom-width: 1px; }
    .help-diploma-text { max-width: none; font-size: .9rem; }
    .help-diploma-foot { grid-template-columns: 1fr 1fr; gap: 14px; font-size: .84rem; }
    .help-diploma-foot > div:first-child, .help-diploma-foot > div:last-child { align-items: center; text-align: center; }
    .help-diploma-seal { grid-column: 1 / -1; grid-row: 1; justify-self: center; width: 52px; height: 52px; }
    .help-diploma-seal .mud-icon-root { font-size: 1.8rem; }
    .help-diploma-label { font-size: .66rem; }
}

/* ── Móvil ────────────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
    .help-title { font-size: 1.7rem; }
    h1.help-topic-title { font-size: 1.55rem; }
    .help-topic, .help-quiz { padding: 20px 16px 22px; border-radius: var(--radius-lg); }
    .help-module-head { flex-direction: column; padding: 20px 18px; }
    .help-tile, .help-card { padding: 18px; }
    .help-final, .help-intro { padding: 18px; }
    .help-hero { align-items: stretch; }
    .help-search { flex-basis: 100%; max-width: none; }
    .help-pager { grid-template-columns: 1fr; }
    .help-pager-link.is-next { grid-column: 1; }
    .help-practice { padding: 18px 16px; }
    .help-result-hero { padding: 18px 16px; }
    .help-quiz-nav .mud-button-root { flex: 1 1 auto; }
}

/* ── Movimiento reducido ──────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    .help-tile, .help-card, .help-lesson-row, .help-pager-link, .help-opt, .help-opt-mark, .help-shot-zoom, .help-toc a { transition: none !important; }
    .help-tile:hover, .help-card:hover, .help-lesson-row:hover, .help-pager-link:hover { transform: none !important; }
}

/* ── Impresión: el capítulo se lee en papel como un manual ────────────────── */
@media print {
    .help-noprint, .mud-appbar, .mud-drawer, .mud-drawer-overlay, .peluges-appbar, .help-toc, .peluges-support-bar, .mud-snackbar-provider, #blazor-error-ui { display: none !important; }
    .mud-main-content { padding: 0 !important; margin: 0 !important; }
    html, body { background: #fff !important; color: #000 !important; }
    body::before, body::after { display: none !important; }
    .help-page { max-width: none; padding: 0; }
    .help-guide-layout { display: block; }
    .help-topic, .help-module-head, .help-quiz, .help-diploma { background: #fff !important; -webkit-backdrop-filter: none !important; backdrop-filter: none !important; box-shadow: none !important; border: 0 !important; padding: 0 !important; }
    .help-topic-section { margin-top: 0; break-before: page; }
    .help-topic-section:first-of-type { break-before: auto; }
    .help-callout, .help-shot, .help-practice, .help-fields-table tr, .help-table tr, .help-steps > li, .help-mistakes li, .help-objectives, .help-recap, .help-block-title { break-inside: avoid; }
    .help-block-title, .help-h, .help-sec-title { break-after: avoid; }
    .help-callout, .help-practice, .help-objectives, .help-recap, .help-steps > li::before, .help-num, .help-kind, .help-level { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
    .help-table-wrap { overflow: visible; }
    .help-fields-table { min-width: 0; }
    a { color: inherit !important; text-decoration: none !important; }
}