/* ============================================================
   PALETA DE MARCA — Ceclaf
   Color de marca: #371373 (violeta profundo).
   Paleta moderna construida alrededor de ese color, con un
   acento cálido (fucsia/magenta) para degradados dinámicos y
   un acento frío (cian) para estados secundarios (diagnóstico).
   ============================================================ */
:root {
    --brand-primary: #371373;        /* Violeta profundo — color de marca */
    --brand-primary-dark: #240B4E;   /* Violeta más oscuro (hover, fondos) */
    --brand-primary-light: #6D3FC0;  /* Violeta claro (degradados, hover en oscuro) */
    --brand-accent: #C026D3;         /* Fucsia — acento cálido para degradados */
    --brand-accent-dark: #9D174D;
    --brand-cyan: #06B6D4;           /* Cian — acento frío (diagnóstico, info) */
    --brand-bg: #F1F1F1;             /* Fondo general (claro) — gris suave */
    --heading-accent: var(--brand-primary);

    --gradient-brand: linear-gradient(135deg, var(--brand-primary) 0%, #6C2BD9 55%, var(--brand-accent) 100%);
    --gradient-brand-soft: linear-gradient(135deg, rgba(55,19,115,0.12) 0%, rgba(192,38,211,0.10) 100%);

    --card-radius: 14px;
    --card-border: rgba(55, 19, 115, 0.10);

    /* Acento propio para la navegación de Pasos: el mismo violeta de
       --heading-accent se perdía contra los bordes/tarjetas ya violetas
       de alrededor, así que se usa el acento frío (cian) que ya existía
       en la paleta para "estados secundarios" — se nota más sin gritar. */
    --step-nav-accent: var(--brand-cyan);
    --step-nav-accent-soft: rgba(6, 182, 212, 0.14);
    --step-nav-accent-border: rgba(6, 182, 212, 0.35);
}

body {
    background: var(--brand-bg);
}

/* ---- Fondo decorativo con formas difuminadas (usado en login/register) ---- */
.aurora-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}
.aurora-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.45;
}
.aurora-blob.b1 { width: 420px; height: 420px; background: var(--brand-primary); top: -120px; left: -100px; }
.aurora-blob.b2 { width: 380px; height: 380px; background: var(--brand-accent); bottom: -140px; right: -80px; }
.aurora-blob.b3 { width: 300px; height: 300px; background: var(--brand-cyan); top: 40%; right: 15%; opacity: 0.25; }

/* El degradado de los blobs solo se ve bien en oscuro — en claro tapaba
   el contraste de los bordes de tarjetas/interactivos, se apaga aquí. */
[data-bs-theme="light"] .aurora-bg {
    display: none;
}

/* Wordmark de respaldo mientras no se suba assets/img/logo.png */
.brand-wordmark {
    font-weight: 800;
    letter-spacing: 0.3px;
    font-size: 1.3rem;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.brand-mark {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: var(--gradient-brand);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.05rem;
    box-shadow: 0 4px 14px rgba(55, 19, 115, 0.35);
}
.brand-subtitle {
    font-size: 0.78rem;
    color: #6b7280;
    border-left: 1px solid #d7dbe3;
    padding-left: 10px;
}

/* ---- Overrides sobre Bootstrap para usar la paleta de marca ---- */
.navbar { border-bottom-color: var(--card-border) !important; }

.btn-primary {
    background: var(--gradient-brand);
    border: none;
    box-shadow: 0 4px 14px rgba(55, 19, 115, 0.28);
    transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.15s ease;
}
.btn-primary:hover, .btn-primary:focus, .btn-primary:active {
    filter: brightness(1.08);
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(55, 19, 115, 0.38);
}
.btn-outline-primary {
    color: var(--brand-primary);
    border-color: var(--brand-primary);
}
.btn-outline-primary:hover {
    background: var(--gradient-brand);
    border-color: transparent;
}
[data-bs-theme="dark"] .btn-outline-primary {
    color: var(--heading-accent);
    border-color: var(--heading-accent);
}
[data-bs-theme="dark"] .btn-outline-primary:hover {
    color: #ffffff;
}

.bg-primary { background: var(--gradient-brand) !important; }
.text-primary { color: var(--heading-accent) !important; }
a { color: var(--brand-primary); }
a:hover { color: var(--brand-primary-light); }

/* El acento cian marca lo "informativo": diagnóstico, resaltados suaves */
.bg-info { background-color: var(--brand-cyan) !important; }
.text-info { color: var(--brand-cyan) !important; }

.progress-bar { background: var(--gradient-brand) !important; }

/* ---- Tarjetas modernas: bordes suaves, esquinas redondeadas, elevación al pasar el mouse ---- */
.card {
    border: 1px solid var(--card-border);
    border-radius: var(--card-radius) !important;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}
a.card:hover, .card.card-hover:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 24px rgba(55, 19, 115, 0.14) !important;
}

/* Insignia de icono cuadrada con degradado, usada en tarjetas de administración/dashboard */
.icon-badge {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: #fff;
    background: var(--gradient-brand);
    box-shadow: 0 4px 12px rgba(55, 19, 115, 0.25);
    flex-shrink: 0;
}
.icon-badge.cyan { background: linear-gradient(135deg, #0891B2, var(--brand-cyan)); box-shadow: 0 4px 12px rgba(6, 182, 212, 0.3); }
.icon-badge.green { background: linear-gradient(135deg, #15803D, #22C55E); box-shadow: 0 4px 12px rgba(34, 197, 94, 0.3); }
.icon-badge.amber { background: linear-gradient(135deg, #B45309, #F59E0B); box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3); }
.icon-badge.rose { background: linear-gradient(135deg, #BE123C, #FB7185); box-shadow: 0 4px 12px rgba(244, 63, 94, 0.3); }
.icon-badge.blue { background: linear-gradient(135deg, #1D4ED8, #60A5FA); box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3); }
.icon-badge.teal { background: linear-gradient(135deg, #0F766E, #2DD4BF); box-shadow: 0 4px 12px rgba(20, 184, 166, 0.3); }
.icon-badge.sm { width: 36px; height: 36px; font-size: 1.05rem; border-radius: 10px; }

/* ---- Botones de estado en tarjetas de competencia (Mis competencias) ----
   Mismos degradados que .icon-badge, aplicados a botón en vez de insignia,
   para que "Empezar/Continuar/Ver certificación/Desbloquear" se lean como
   estados distintos de un vistazo, no solo como texto. */
.btn-cta-start {
    color: var(--brand-primary) !important;
    border: 1px solid var(--brand-primary) !important;
    background: transparent !important;
    transition: filter 0.15s ease, transform 0.15s ease;
}
.btn-cta-start:hover {
    background: var(--gradient-brand) !important;
    color: #fff !important;
    border-color: transparent !important;
}
.btn-cta-continue, .btn-cta-certified, .btn-cta-unlock {
    border: none !important;
    color: #fff !important;
    transition: filter 0.15s ease, transform 0.15s ease;
}
.btn-cta-continue:hover, .btn-cta-certified:hover, .btn-cta-unlock:hover {
    filter: brightness(1.08);
    color: #fff !important;
}
.btn-cta-continue {
    background: linear-gradient(135deg, #15803D, #22C55E) !important;
    box-shadow: 0 4px 12px rgba(34, 197, 94, 0.3);
}
.btn-cta-certified {
    background: linear-gradient(135deg, #0F766E, #2DD4BF) !important;
    box-shadow: 0 4px 12px rgba(20, 184, 166, 0.3);
}
.btn-cta-unlock {
    background: linear-gradient(135deg, #B45309, #F59E0B) !important;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

/* ---- Elementos propios de la app ---- */
.badge-easy { background-color: #16A34A !important; }
.badge-medium { background-color: #D97706 !important; color: #fff; }
.badge-hard { background-color: #DC2626 !important; }

.option-row {
    border: 1px solid var(--card-border);
    border-radius: 10px;
    padding: 10px 14px;
    margin-bottom: 8px;
    transition: border-color 0.15s ease;
}

.option-row.correct {
    background: rgba(34, 197, 94, 0.08);
    border-color: #22C55E;
}

.option-row.incorrect {
    background: rgba(220, 38, 38, 0.08);
    border-color: #DC2626;
}

.option-explanation {
    font-size: 0.87rem;
    color: #555;
    margin-top: 6px;
    margin-bottom: 0;
}

.timer-box {
    font-weight: 700;
    font-size: 1.1rem;
    color: #DC2626;
    position: sticky;
    top: 70px;
    z-index: 5;
}

.section-heading {
    background: var(--gradient-brand-soft);
    border-left: 4px solid var(--brand-primary);
    padding: 10px 16px;
    border-radius: 8px;
    margin: 24px 0 14px;
}

/* Variantes de color para encabezados de bloque en pantallas con varios
   grupos (ej. Mis competencias) — mismo patrón que .section-heading, distinto
   tono, para que cada bloque se distinga de un vistazo en vez de repetir
   siempre el morado de marca. */
.section-heading.blue {
    background: linear-gradient(135deg, rgba(29, 78, 216, 0.10), rgba(96, 165, 250, 0.10));
    border-left-color: #1D4ED8;
}
.section-heading.green {
    background: linear-gradient(135deg, rgba(21, 128, 61, 0.10), rgba(34, 197, 94, 0.10));
    border-left-color: #15803D;
}
.section-heading.amber {
    background: linear-gradient(135deg, rgba(180, 83, 9, 0.10), rgba(245, 158, 11, 0.10));
    border-left-color: #B45309;
}

.result-score {
    font-size: 2.4rem;
    font-weight: 800;
}

.pass { color: #16A34A; }
.fail { color: #DC2626; }

.stat-number {
    font-size: 1.9rem;
    font-weight: 700;
    color: var(--heading-accent);
}

.radar-chart-wrap {
    max-width: 720px;
    margin: 0 auto;
}

@font-face {
    font-family: 'Rubik';
    src: url('../fonts/Rubik-ExtraBold.ttf') format('truetype');
    font-weight: 800;
    font-style: normal;
    font-display: swap;
}
.brand-wordmark {
    font-family: 'Rubik', sans-serif;
    font-weight: 800;
    font-size: 1.8rem;
    text-transform: lowercase;
}

.theme-toggle {
    line-height: 1;
}

/* ---- FAQ en acordeón (mini-CMS): <details>/<summary> nativo, sin JS.
   Se usa en page.php y blog_post.php cuando la página/post tiene FAQs
   asociadas — el contenido queda en el DOM aunque esté colapsado, por eso es
   preferible a un acordeón JS para SEO/GEO (los rastreadores y agentes de IA
   leen la respuesta igual, esté abierta o cerrada). ---- */
.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}
@media (max-width: 767px) {
    .faq-grid { grid-template-columns: 1fr; }
}
.faq-item summary {
    padding: 14px 18px;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: .92rem;
}
.faq-item summary::-webkit-details-marker {
    display: none;
}
.faq-item summary::after {
    content: '+';
    font-size: 20px;
    line-height: 1;
    color: var(--heading-accent);
    margin-left: 12px;
    flex-shrink: 0;
}
.faq-item[open] summary::after {
    content: '\2212'; /* signo menos */
}
.faq-item .faq-answer {
    padding: 0 18px 16px;
    margin: 0;
    font-size: .875rem;
    line-height: 1.6;
    color: var(--bs-secondary-color);
    border-top: 1px solid var(--card-border, rgba(55,19,115,.10));
    padding-top: 12px;
}

/* ============================================================
   MODO OSCURO
   ============================================================ */
[data-bs-theme="dark"] {
    --brand-bg: #0F0B1A;
    --heading-accent: #B794F6; /* violeta claro con buen contraste sobre fondo oscuro */
    --card-border: rgba(183, 148, 246, 0.16);
    --step-nav-accent: #22D3EE;
    --step-nav-accent-soft: rgba(34, 211, 238, 0.16);
    --step-nav-accent-border: rgba(34, 211, 238, 0.35);
}

[data-bs-theme="dark"] body {
    background: var(--brand-bg);
}

[data-bs-theme="dark"] .navbar {
    border-bottom-color: var(--card-border) !important;
}

[data-bs-theme="dark"] .brand-subtitle {
    color: #9aa4b2;
    border-left-color: rgba(255, 255, 255, 0.15);
}

[data-bs-theme="dark"] a {
    color: #B794F6;
}
[data-bs-theme="dark"] a:hover {
    color: #D6BCFA;
}

/* Cualquier tarjeta-enlace usa el color de texto normal del tema (nunca "text-dark" forzado) */
[data-bs-theme="dark"] .card,
[data-bs-theme="dark"] a.card {
    color: var(--bs-body-color) !important;
}

[data-bs-theme="dark"] .option-row {
    border-color: rgba(255, 255, 255, 0.12);
}
[data-bs-theme="dark"] .option-row.correct {
    background: rgba(34, 197, 94, 0.16);
    border-color: #34D399;
}
[data-bs-theme="dark"] .option-row.incorrect {
    background: rgba(220, 38, 38, 0.16);
    border-color: #F87171;
}

[data-bs-theme="dark"] .option-explanation {
    color: #b6bdc8;
}

[data-bs-theme="dark"] .section-heading {
    background: rgba(183, 148, 246, 0.08);
}
[data-bs-theme="dark"] .section-heading.blue { background: rgba(96, 165, 250, 0.10); }
[data-bs-theme="dark"] .section-heading.green { background: rgba(34, 197, 94, 0.10); }
[data-bs-theme="dark"] .section-heading.amber { background: rgba(245, 158, 11, 0.10); }

[data-bs-theme="dark"] .timer-box {
    background: var(--bs-body-bg) !important;
    color: #FCA5A5;
}

[data-bs-theme="dark"] .study-sidebar .list-group-item.bg-light {
    background-color: rgba(255, 255, 255, 0.06) !important;
    color: inherit;
}

[data-bs-theme="dark"] .exam-topbar,
[data-bs-theme="dark"] .exam-bottombar {
    background: var(--bs-body-bg) !important;
}

[data-bs-theme="dark"] .aurora-blob { opacity: 0.35; }

/* ============================================================
   Guía de estudio en "Pasos" — navegación dentro de un tema
   ============================================================ */

.step-dots {
    display: flex;
    gap: 7px;
    flex-wrap: wrap;
}

.step-dot {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    display: inline-block;
    box-sizing: border-box;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid var(--card-border);
    background: var(--bs-body-bg);
    padding: 0;
    margin: 0;
    line-height: 0;
    cursor: pointer;
}

.step-dot.is-done {
    background: var(--heading-accent);
    border-color: var(--heading-accent);
}

.step-dot.is-active {
    width: 14px;
    height: 14px;
    background: var(--brand-primary);
    border-color: var(--brand-primary);
}

[data-bs-theme="dark"] .step-dot.is-active {
    background: var(--heading-accent);
    border-color: var(--heading-accent);
}

/* Fix Safari/iOS: .card de Bootstrap es flex-column, y un item flex
   (.card-body) sin min-width/min-height:0 no deja que el overflow de sus
   hijos recorte de verdad en Safari — en vez de scrollear horizontal,
   el contenido se desborda/desordena. Chrome es más permisivo y no lo
   muestra, por eso solo se veía en iPhone. */
.topic-card-body,
.step-nav,
.step-track {
    min-width: 0;
    min-height: 0;
}

.step-track {
    display: flex;
    align-items: flex-start;
    overflow-x: auto;
    overflow-y: hidden;
    touch-action: pan-x pan-y;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    transition: height .2s ease;
}

.step-track::-webkit-scrollbar {
    display: none;
}

.step-panel {
    flex: 0 0 100%;
    scroll-snap-align: center;
    box-sizing: border-box;
}

/* El link "Siguiente tema"/"Finalizar guía" queda bloqueado hasta que se
   recorren todos los pasos del tema (ver assets/js/study-steps.js). */
.step-locked {
    pointer-events: none !important;
    opacity: .5 !important;
}

/* Control de navegación entre pasos: botón partido en 2 ("‹"/"›"),
   centrado, deliberadamente distinto de los botones "Anterior"/"Siguiente"
   de tema (los de abajo, que sí llevan texto) para que no se confundan. */
.step-swipe-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 10px;
    font-size: 1rem;
    color: var(--bs-secondary-color, #8a8299);
    opacity: .55;
}

.topic-infographic-wrap {
    margin-bottom: 4px;
}

.topic-infographic-btn {
    appearance: none;
    -webkit-appearance: none;
    border: none;
    background: transparent;
    padding: 0;
    cursor: zoom-in;
    position: relative;
    display: inline-block;
    max-width: 100%;
}

.topic-infographic-zoom-icon {
    position: absolute;
    right: 10px;
    bottom: 10px;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: rgba(20, 10, 40, 0.55);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.topic-infographic-lightbox-img {
    max-width: 100%;
    max-height: 88vh;
    object-fit: contain;
    display: block;
    /* Habilita el pinch-to-zoom nativo del navegador sobre esta imagen en
       mobile, sin necesidad de JS custom para rastrear el gesto. */
    touch-action: pinch-zoom pan-x pan-y;
}

.topic-infographic-lightbox-inner {
    position: relative;
    display: inline-block;
    max-width: 100%;
}

.topic-infographic-lightbox-close {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    padding: 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(20, 10, 40, 0.85);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
}

.topic-infographic-lightbox-close:hover {
    background-color: rgba(20, 10, 40, 1);
}

.section-complete-card {
    width: 100%;
    max-width: 640px;
}

.section-complete-check {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(25, 135, 84, .12);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 8px auto 12px;
}

.section-complete-topics {
    background: var(--bs-body-bg, var(--brand-bg));
    border-radius: 10px;
    padding: 18px 22px;
    margin: 18px 0 4px;
}

[data-bs-theme="dark"] .section-complete-topics {
    background: rgba(255, 255, 255, .04);
}

.section-rating-stars {
    display: flex;
    gap: 6px;
    justify-content: center;
    margin: 10px 0 2px;
}

.section-rating-star {
    appearance: none;
    -webkit-appearance: none;
    border: none;
    background: transparent;
    padding: 0;
    cursor: pointer;
    width: 20px;
    height: 20px;
}

.section-rating-star svg {
    width: 100%;
    height: 100%;
    fill: none;
    stroke: #d8d3e0;
    stroke-width: 1.1;
}

[data-bs-theme="dark"] .section-rating-star svg {
    stroke: #4a4358;
}

.section-rating-star.is-filled svg {
    fill: #F5A623;
    stroke: #F5A623;
}

[data-study-sidebar-col] {
    position: sticky;
    top: calc(var(--navbar-height, 72px) + 16px);
    align-self: flex-start;
}

.study-content-inner {
    max-width: 700px;
    margin: 0 auto;
    padding: 0 16px;
    box-sizing: border-box;
}

.pill-nav-frame {
    display: flex;
    flex-direction: column;
}

.pill-nav-btn {
    min-width: 120px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

/* .step-locked reutiliza la misma clase/regla que ya existía para el
   candado del botón de "Siguiente tema" (pointer-events + opacity). */

/* ============================================================
   Sidebar de navegación — zona de usuario logueado (no aplica al
   sitio público ni a /admin/, ver $useAppSidebar en header.php)
   ============================================================ */

.app-shell {
    display: flex;
    min-height: 100vh;
}

.app-sidebar {
    --bs-offcanvas-width: 280px;
    background: var(--bs-body-bg);
}

.app-sidebar-body {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 8px;
    box-sizing: border-box;
}

.app-shell-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.app-mobile-topbar {
    height: 56px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 0 16px;
    border-bottom: 1px solid var(--card-border);
    background: var(--bs-body-bg);
    box-sizing: border-box;
}

.app-mobile-topbar button {
    appearance: none;
    -webkit-appearance: none;
    border: none;
    background: transparent;
    padding: 0;
    cursor: pointer;
    color: inherit;
    display: flex;
}

.app-mobile-topbar-brand {
    font-weight: 700;
    font-size: 15px;
}

@media (min-width: 992px) {
    .app-sidebar {
        position: sticky;
        top: 0;
        height: 100vh;
        width: 260px;
        flex-shrink: 0;
        border-right: 1px solid var(--card-border);
        transition: width .15s ease;
    }
    .app-sidebar.is-collapsed {
        width: 72px;
    }
    .app-sidebar.is-collapsed .app-sidebar-label,
    .app-sidebar.is-collapsed .app-sidebar-wordmark {
        display: none;
    }
    .app-sidebar.is-collapsed .app-sidebar-top {
        justify-content: center;
    }
    .app-sidebar.is-collapsed .app-sidebar-collapse-btn {
        display: none;
    }
    .app-sidebar.is-collapsed .app-sidebar-link {
        justify-content: center;
        position: relative;
    }
}

.app-sidebar-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 10px 14px;
}

.app-sidebar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: inherit;
    min-width: 0;
}

.app-sidebar-logo-img {
    height: 30px;
    flex-shrink: 0;
}

.app-sidebar-wordmark.brand-wordmark {
    font-size: 1.15rem;
    white-space: nowrap;
}

.app-sidebar-collapse-btn {
    appearance: none;
    -webkit-appearance: none;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    border: 1px solid var(--card-border);
    background: var(--bs-body-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--bs-secondary-color, #8a8299);
    flex-shrink: 0;
    font-size: 15px;
}

.app-sidebar-nav {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 4px;
}

.app-sidebar-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 10px;
    text-decoration: none;
    color: var(--bs-body-color);
    font-size: 14px;
    font-weight: 600;
    border: none;
    background: transparent;
    width: 100%;
    text-align: left;
    cursor: pointer;
}

.app-sidebar-link:hover {
    background: var(--step-nav-accent-soft);
    text-decoration: none;
    color: var(--bs-body-color);
}

.app-sidebar-link.active {
    background: var(--step-nav-accent-soft);
    border-left: 3px solid var(--step-nav-accent);
    margin-left: -3px;
}

.app-sidebar-icon {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
}

.app-sidebar-divider {
    height: 1px;
    background: var(--card-border);
    margin: 8px 12px;
}

.app-sidebar-footer {
    border-top: 1px solid var(--card-border);
    padding: 8px 4px 4px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex-shrink: 0;
}

.app-sidebar-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--step-nav-accent-soft);
    color: var(--brand-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 13px;
}

[data-bs-theme="dark"] .app-sidebar-avatar {
    color: var(--heading-accent);
}

.app-sidebar-theme-btn {
    font-family: inherit;
}

/* ============================================================
   Layout de la guía de estudio (panel + contenido) — flex propio en vez
   del grid de Bootstrap, para que el panel pueda tener un ancho fijo en
   píxeles al colapsar (igual que el menú principal .app-sidebar) y el
   contenido llene el resto solo, sin tener que intercambiar clases.
   ============================================================ */

.study-shell {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
}

.study-sidebar-col {
    width: 300px;
    flex-shrink: 0;
    transition: width .15s ease;
    border-right: 1px solid var(--card-border);
    margin-top: -10px;
}

.study-content-col {
    flex: 1;
    min-width: 0;
}

@media (min-width: 992px) {
    .study-sidebar-col.is-collapsed {
        width: 72px;
    }
    .study-sidebar-col.is-collapsed .path-text,
    .study-sidebar-col.is-collapsed .reto-header-label,
    .study-sidebar-col.is-collapsed .path-label,
    .study-sidebar-col.is-collapsed .path-locked-note {
        display: none;
    }
    .study-sidebar-col.is-collapsed .list-group-item {
        justify-content: center;
        position: relative;
    }
    .study-sidebar-col.is-collapsed .path-row {
        padding: 0 4px;
        justify-content: center;
        position: relative;
    }
    .study-sidebar-col.is-collapsed .reto-block {
        margin-bottom: 10px;
    }
}

.study-sidebar-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 10px 14px;
}

/* Tooltip de los íconos colapsados (menú principal y mapa) — se posiciona
   con JS (position:fixed) en vez de CSS puro, porque el contenedor que
   tiene scroll vertical (overflow-y:auto) recorta cualquier hijo que
   intente sobresalir hacia los costados; un position:fixed no depende de
   ese overflow porque no es descendiente visual de esa caja. */
.js-hover-tooltip {
    position: fixed;
    background: var(--heading-accent, #241050);
    color: #ffffff;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12.5px;
    font-weight: 600;
    white-space: nowrap;
    z-index: 2000;
    box-shadow: 0 4px 14px rgba(0, 0, 0, .3);
    pointer-events: none;
    display: none;
}

.js-hover-tooltip.is-visible {
    display: block;
}

.study-sidebar-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 600;
    color: var(--bs-body-color);
}

.study-sidebar-title i {
    font-size: 18px;
}

@media (min-width: 992px) {
    .study-sidebar-col.is-collapsed .study-sidebar-top {
        justify-content: center;
    }
    .study-sidebar-col.is-collapsed .study-sidebar-title {
        display: none;
    }
}

/* ============================================================
   Mapa del temario — Retos / Actividades / Desafíos
   ============================================================ */

.reto-block {
    margin-bottom: 6px;
}

.reto-header {
    margin-bottom: 0;
}

.reto-header-label {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
    flex: 1;
    min-width: 0;
}

.reto-number {
    font-size: 11.5px;
    font-weight: 800;
    letter-spacing: .02em;
    color: var(--bs-secondary-color, #8a8299);
    white-space: nowrap;
}

.reto-number.is-pending {
    color: var(--bs-secondary-color, #8a8299);
}

.reto-header .reto-name {
    font-size: 12.5px;
    font-weight: 700;
    flex: 1;
    min-width: 0;
}

.reto-header.is-done .reto-number,
.reto-number.is-done {
    color: var(--bs-success, #198754);
}

.reto-number.is-current {
    color: var(--step-nav-accent);
}

/* Nodo de inicio de Reto — el ancla real de la línea (antes era un stub
   invisible), más grande y notorio que los nodos de Actividad para que se
   sienta como un hito propio, no un tema más. */
.path-node-reto {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid var(--card-border);
    background: var(--bs-body-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-sizing: border-box;
    font-size: 14px;
    color: var(--bs-secondary-color, #8a8299);
}

.path-node-reto.is-done {
    background: var(--bs-success, #198754);
    border-color: var(--bs-success, #198754);
    color: #ffffff;
}

.path-node-reto.is-current {
    border-color: var(--step-nav-accent);
    background: var(--step-nav-accent);
    color: #ffffff;
    box-shadow: 0 0 0 3px var(--step-nav-accent-soft);
}

.reto-header.is-current .reto-number {
    color: var(--step-nav-accent);
}

.reto-header.is-locked {
    opacity: .6;
}

.path-locked-note {
    font-size: 11.5px;
    color: var(--bs-secondary-color, #8a8299);
    padding: 0 8px 10px 8px;
    margin: 0;
}

.path-row {
    display: flex;
    align-items: stretch;
    gap: 10px;
    text-decoration: none;
    color: inherit;
    padding: 0 8px;
    border-radius: 8px;
}

.path-row:hover {
    background: var(--step-nav-accent-soft);
    text-decoration: none;
    color: inherit;
}

.path-row.active {
    background: var(--step-nav-accent-soft);
}

.path-rail {
    width: 32px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.path-line {
    width: 3px;
    flex: 1 1 auto;
    min-height: 8px;
    background: var(--card-border);
}

.path-row:first-child .path-line:first-child {
    background: transparent;
}

.path-line.is-done {
    background: var(--bs-success, #198754);
}

.path-line.is-current {
    background: var(--step-nav-accent);
}

.path-node {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 2px solid var(--card-border);
    background: var(--bs-body-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-sizing: border-box;
}

.path-node.is-done {
    background: var(--bs-success, #198754);
    border-color: var(--bs-success, #198754);
}

.path-node.is-current {
    border-color: var(--step-nav-accent);
    border-width: 3px;
    box-shadow: 0 0 0 3px var(--step-nav-accent-soft);
}

.path-node-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--step-nav-accent);
}

.path-node-quest {
    width: 28px;
    height: 28px;
    border-radius: 9px;
    border: 2px solid var(--card-border);
    background: var(--bs-body-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-sizing: border-box;
    color: var(--bs-secondary-color, #8a8299);
    font-size: 13px;
}

.path-node-quest.is-done {
    background: var(--bs-success, #198754);
    border-color: var(--bs-success, #198754);
}

.path-node-quest.is-pending {
    border-color: var(--step-nav-accent-border);
    color: var(--step-nav-accent);
}

.path-label {
    padding: 4px 0 10px;
    font-size: 12.5px;
    line-height: 1.3;
    color: var(--bs-body-color);
}

.path-label.is-done,
.path-label.is-pending {
    color: var(--bs-secondary-color, #8a8299);
}

.path-label.is-current {
    font-weight: 700;
    color: var(--step-nav-accent);
}

.path-here {
    font-size: 10.5px;
    font-weight: 700;
    color: var(--step-nav-accent);
    text-transform: uppercase;
    letter-spacing: .03em;
}