/* ===== CSS VARIABLES ===== */
:root {
    --bg: #0d0f14;
    --bg-card: #13161e;
    --bg-card2: #1a1e28;
    --border: rgba(255,255,255,0.07);
    --text: #fff;
    --text-muted: #f7ffe7;
    --accent: #6366f1;
    --font-display: 'Nunito', sans-serif;
    --font-body: 'Nunito', sans-serif;
    --radius: 16px;
    --radius-sm: 8px;
    --shadow: 0 4px 24px rgba(0,0,0,0.4);
    --shadow-card: 0 8px 32px rgba(0,0,0,0.5);
    --color-background-secondary: #262624;
}

/* ===== ANCHO DEL CONTENIDO =====
   El navbar y todas las secciones usan .container de Bootstrap, así que este
   override ensancha toda la página a la vez. Valores por defecto de Bootstrap:
   1140px (pantallas ≥1200px) y 1320px (≥1400px). Ajusta aquí si quieres más o menos. */
@media (min-width: 1200px) {
    .container { max-width: 1220px; }
}

@media (min-width: 1400px) {
    .container { max-width: 1500px; }
}

/* ===== TEMA CLARO (modo día) ===== */
/* La mayoría de los componentes usan estas variables, así que se adaptan solos.
   Más abajo se corrigen los puntos con colores fijos pensados para fondo oscuro. */
:root[data-theme="light"] {
    --bg: #eef1f6;
    --bg-card: #ffffff;
    --bg-card2: #f3f5f9;
    --border: rgba(15, 23, 42, 0.10);
    --text: #1f2430;
    --text-muted: #5a6478;
    --shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
    --shadow-card: 0 8px 30px rgba(15, 23, 42, 0.10);
    --color-background-secondary: #e9edf3;
}

/* Navbar */
[data-theme="light"] .navbar { background: rgba(255, 255, 255, 0.85); }
[data-theme="light"] .navbar .nav-link { color: #2a2f3a !important; }
[data-theme="light"] .navbar-text { color: #2a2f3a; }
[data-theme="light"] .nav-link:hover { background: var(--bg-card2); }

/* Botones "Iniciar Sesión" / "Crear Cuenta": btn-magomatica sin fondo propio,
   su texto blanco fijo no se ve sobre el navbar claro */
[data-theme="light"] .navbar .btn-magomatica:not(.btn-hero) {
    color: #2a2f3a !important;
    border: 1px solid rgba(15, 23, 42, 0.18);
}
[data-theme="light"] .navbar .btn-magomatica:not(.btn-hero):hover {
    background: var(--bg-card2);
}

/* Dropdowns */
[data-theme="light"] .dropdown-menu { background: rgba(255, 255, 255, 0.98); }
[data-theme="light"] .dropdown-item:hover { background: var(--bg-card2); }

/* Texto atenuado de Bootstrap (override del tema oscuro) */
[data-theme="light"] .text-muted { color: #5a6478 !important; }

/* Pestañas y pills */
[data-theme="light"] .nav-pills .nav-link,
[data-theme="light"] .nav-tabs .nav-link { color: #5a6478 !important; }
[data-theme="light"] .nav-pills .nav-link:hover,
[data-theme="light"] .nav-tabs .nav-link:hover { color: #1f2430 !important; }
[data-theme="light"] .nav-pills .nav-link:hover { background: rgba(15, 23, 42, 0.05); }
[data-theme="light"] .nav-pills .nav-link.active,
[data-theme="light"] .nav-tabs .nav-link.active,
[data-theme="light"] .nav-tabs .show > .nav-link { color: #4338ca !important; }

/* Detalle de unidades: borde de hover visible sobre fondo claro */
[data-theme="light"] .unidad-block:hover { border-color: rgba(15, 23, 42, 0.18); }

/* PaesWeb: chevron del acordeón oscuro (el SVG por defecto es claro) */
[data-theme="light"] .paes-curriculo .accordion {
    --bs-accordion-active-color: #4338ca;
    --bs-accordion-active-bg: rgba(99, 102, 241, 0.08);
    --bs-accordion-btn-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%235a6478'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
    --bs-accordion-btn-active-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%234338ca'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}

/* ===== Filas de ejercicios (lista compacta, igual que el detalle de lección) ===== */
/* Ocultar filas filtradas: necesita !important para ganarle a .d-flex de Bootstrap. */
.ejercicio-oculto { display: none !important; }
.ejercicio-fila { cursor: pointer; }
.ejercicio-fila:hover {
    border-color: var(--curso-color, #6366f1) !important;
    background: var(--bg-card2) !important;
}
.ejercicio-link:hover .bi-chevron-right,
.ejercicio-fila:hover .bi-chevron-right { color: var(--curso-color, #6366f1) !important; }

/* ===== Toast de logro desbloqueado ===== */
.logro-toast {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 1080;
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-left: 4px solid #fbbf24;
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    padding: 14px 18px;
    max-width: 320px;
    transform: translateY(20px);
    opacity: 0;
    transition: transform .35s ease, opacity .35s ease;
}
.logro-toast.visible { transform: translateY(0); opacity: 1; }
.logro-toast-emoji { font-size: 2rem; line-height: 1; flex-shrink: 0; }
.logro-toast-label {
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: #fbbf24;
    font-weight: 700;
}
.logro-toast-titulo { color: var(--text); font-weight: 700; font-size: .95rem; }

/* ===== Resumen de sesión (PracticarLeccion) ===== */
.resumen-num {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text);
    line-height: 1;
}
.resumen-label {
    color: var(--text-muted);
    font-size: .78rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    margin-top: 4px;
}

/* ===== Botón de cambio de tema ===== */
.theme-toggle {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.theme-toggle:hover {
    background: var(--bg-card2);
    border-color: var(--accent);
    color: var(--accent);
}

html {
    scroll-behavior: smooth;
}

.select-wrapper {
    position: relative;
}

    .select-wrapper select {
        padding-right: 40px;
        cursor: pointer;
    }

    .select-wrapper i {
        position: absolute;
        right: 14px;
        top: 50%;
        transform: translateY(-50%);
        pointer-events: none;
        color: var(--text-muted);
    }
.curso-sidebar {
    position: sticky;
    top: 90px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
}

.sidebar-link {
    display: flex;
    gap: .75rem;
    padding: .75rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--text-muted);
    transition: .2s;
}

    .sidebar-link:hover {
        background: var(--bg-card2);
        color: var(--text);
    }
.sidebar-link-active {
    background: var(--bg-card2);
    color: var(--text);
}
.sidebar-number {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--bg-card2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .8rem;
    font-weight: 700;
    flex-shrink: 0;
}

.unidad-section {
    scroll-margin-top: 110px;
}

/* ===== BASE ===== */
*, *::before, *::after { box-sizing: border-box; }

/* Bootstrap .text-muted en tema oscuro */
.text-muted {
    color: rgba(180, 200, 235, 0.7) !important;
}

body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--text);
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

/* ===== NAVBAR ===== */
.navbar {
    background: rgba(13,15,20,0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.brand-icon {
    font-size: 1.8rem;
    font-family: var(--font-display);
    background: linear-gradient(135deg, #6366f1, #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.brand-text {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--text);
    font-weight: 400;
}
.brand-text strong { font-weight: 800; }

.navbar-toggler {
    border: 1px solid var(--border);
    color: var(--text);
    padding: 6px 10px;
    font-size: 1.2rem;
}
.navbar-toggler:focus { box-shadow: none; }

.nav-link {
    color: rgba(200, 215, 245, 0.75) !important;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 6px 14px !important;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}
.nav-link:hover {
    color: var(--text) !important;
    background: var(--bg-card);
}

/* Nav pills */
.nav-pills .nav-link {
    color: rgba(200, 215, 245, 0.75) !important;
    background: transparent;
    border: 1px solid transparent;
}
.nav-pills .nav-link:hover {
    color: #fff !important;
    background: rgba(255,255,255,0.06);
}
.nav-pills .nav-link.active,
.nav-pills .show > .nav-link {
    background: rgba(99, 102, 241, 0.2) !important;
    color: #c7d2fe !important;
    border-color: rgba(99, 102, 241, 0.4) !important;
}

/* Nav tabs (ej. Hub de Ejercicios) */
.nav-tabs {
    border-bottom-color: var(--border);
}
.nav-tabs .nav-link {
    color: rgba(200, 215, 245, 0.65) !important;
    background: transparent !important;
    border-color: transparent !important;
    border-bottom: 2px solid transparent !important;
    border-radius: 0 !important;
    padding: 8px 16px !important;
    transition: color 0.2s, border-color 0.2s;
}
.nav-tabs .nav-link:hover {
    color: #fff !important;
    border-bottom-color: rgba(99, 102, 241, 0.4) !important;
}
.nav-tabs .nav-link.active,
.nav-tabs .show > .nav-link {
    background: transparent !important;
    color: #c7d2fe !important;
    border-color: transparent !important;
    border-bottom-color: var(--accent) !important;
}


.navbar-text {
    color: white;
}

.navbar .nav-link {
    color: white;
}

    .navbar .nav-link:hover {
        color: rgba(255, 255, 255, 0.75);
    }
/* ===== HERO ===== */
.hero-section {
    position: relative;
    padding: 100px 0 60px;
    overflow: hidden;
}

.hero-bg-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
}
.shape-1 {
    width: 600px; height: 600px;
    background: #6366f1;
    top: -200px; left: -150px;
}
.shape-2 {
    width: 400px; height: 400px;
    background: #a855f7;
    top: 100px; right: -100px;
}
.shape-3 {
    width: 300px; height: 300px;
    background: #10b981;
    bottom: -50px; left: 40%;
}

.hero-content { position: relative; z-index: 1; }

.badge-pill {
    display: inline-block;
    background: rgba(99,102,241,0.15);
    border: 1px solid rgba(99,102,241,0.4);
    color: #a5b4fc;
    font-family: var(--font-body);
    font-size: 0.82rem;
    font-weight: 700;
    padding: 5px 14px;
    border-radius: 100px;
    letter-spacing: 0.03em;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 800;
    line-height: 1.12;
    color: var(--text);
    margin-bottom: 1.2rem;
}
.hero-title em {
    font-style: normal;
    background: linear-gradient(135deg, #818cf8, #a78bfa, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    color: var(--text-muted);
    font-size: 1.05rem;
    max-width: 520px;
    margin-bottom: 2rem;
    line-height: 1.7;
}

/* Base para todos los botones tipo pill */
.btn-magomatica {
    color: #fff !important;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1rem;
    padding: 13px 28px;
    border-radius: 100px;
    border: none;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
}

    .btn-magomatica:hover {
        transform: translateY(-3px);
        filter: brightness(1.08);
    }

    .btn-magomatica:active {
        transform: translateY(-1px);
    }

    .btn-magomatica:focus-visible {
        outline: none;
    }

    .btn-magomatica::before {
        content: '';
        position: absolute;
        top: 0;
        left: -120%;
        width: 80%;
        height: 100%;
        background: linear-gradient( 90deg, transparent, rgba(255,255,255,0.20), transparent );
        transition: left 0.6s ease;
    }

    .btn-magomatica:hover::before {
        left: 140%;
    }

.btn-hero {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    box-shadow: 0 4px 20px rgba(99,102,241,0.4);
}

    .btn-hero:hover {
        box-shadow: 0 8px 28px rgba(99,102,241,0.55), 0 0 20px rgba(139,92,246,0.25);
    }

    .btn-hero:focus-visible {
        box-shadow: 0 0 0 3px rgba(99,102,241,0.25), 0 8px 28px rgba(99,102,241,0.55);
    }

.btn-danger {
    background: linear-gradient(135deg, #f43f5e, #e11d48);
    box-shadow: 0 4px 20px rgba(244,63,94,0.35);
}

    .btn-danger:hover {
        box-shadow: 0 8px 28px rgba(244,63,94,0.50), 0 0 20px rgba(225,29,72,0.25);
    }

    .btn-danger:focus-visible {
        box-shadow: 0 0 0 3px rgba(244,63,94,0.25), 0 8px 28px rgba(244,63,94,0.50);
    }

.btn-logout {
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    background: transparent;
}

    .btn-logout:hover {
        background: rgba(255, 255, 255, 0.1);
        border-color: white;
        color: white;
    }
/* Math symbols display */
.hero-math-display {
    position: relative;
    width: 340px;
    height: 340px;
}
.math-symbol {
    position: absolute;
    font-family: var(--font-display);
    font-weight: 800;
    color: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: float 6s ease-in-out infinite;
}
.sym-1 { font-size: 3rem; width: 80px; height: 80px; top: 10px; left: 30px; animation-delay: 0s; color: rgba(99,102,241,0.25); border-color: rgba(99,102,241,0.2); }
.sym-2 { font-size: 4rem; width: 110px; height: 110px; top: 60px; right: 0; animation-delay: 1s; color: rgba(168,85,247,0.25); border-color: rgba(168,85,247,0.2); }
.sym-3 { font-size: 2.5rem; width: 75px; height: 75px; top: 180px; left: 0; animation-delay: 2s; color: rgba(16,185,129,0.25); border-color: rgba(16,185,129,0.2); }
.sym-4 { font-size: 2.5rem; width: 80px; height: 80px; bottom: 20px; left: 100px; animation-delay: 0.5s; color: rgba(245,158,11,0.25); border-color: rgba(245,158,11,0.2); }
.sym-5 { font-size: 3rem; width: 85px; height: 85px; bottom: 60px; right: 30px; animation-delay: 1.5s; color: rgba(236,72,153,0.25); border-color: rgba(236,72,153,0.2); }
.sym-6 { font-size: 2rem; width: 65px; height: 65px; top: 0; right: 130px; animation-delay: 2.5s; color: rgba(99,102,241,0.2); border-color: rgba(99,102,241,0.15); }

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

/* Hero Stats */
.hero-stats {
    display: flex;
    align-items: center;
    gap: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.2rem 2rem;
    margin-top: 3.5rem;
    width: fit-content;
}
.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 2rem;
}
.stat-number {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, #818cf8, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}
.stat-label {
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 4px;
}
.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

/* ===== COURSES SECTION ===== */
.cursos-section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

/* Portada con admin: las cards llevan el botón "Mostrar/Ocultar al usuario"
   debajo, así que las filas necesitan más aire vertical para no taparlo.
   (g-4 usa 1.5rem; ajusta este valor si quieres más o menos espacio) */
.row-admin-cursos {
    --bs-gutter-y: 3.5rem;
}

/* Separación entre grupos de nivel en la portada (Básica / Media / etc.) */
.grupo-nivel-separado {
    margin-top: 5rem;
    padding-top: 3.5rem;
    border-top: 1px solid var(--border);
}
.section-title {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 0.5rem;
}
.section-title span {
    background: linear-gradient(135deg, #818cf8, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.section-subtitle {
    color: var(--text-muted);
    font-size: 1rem;
}

/* ===== COURSE CARDS ===== */
.curso-card-wrapper { animation: fadeUp 0.5s ease both; }
.curso-card-wrapper:nth-child(1) { animation-delay: 0.05s; }
.curso-card-wrapper:nth-child(2) { animation-delay: 0.10s; }
.curso-card-wrapper:nth-child(3) { animation-delay: 0.15s; }
.curso-card-wrapper:nth-child(4) { animation-delay: 0.20s; }

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.curso-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.6rem;
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}
.curso-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--curso-color);
    opacity: 0.8;
}
.curso-card:hover {
    border-color: color-mix(in srgb, var(--curso-color) 40%, transparent);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.5),
                0 0 0 1px color-mix(in srgb, var(--curso-color) 20%, transparent);
}

.curso-card-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}
.curso-icon-wrap {
    width: 52px; height: 52px;
    border-radius: var(--radius-sm);
    background: color-mix(in srgb, var(--curso-color) 15%, transparent);
    border: 1px solid color-mix(in srgb, var(--curso-color) 30%, transparent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    font-family: var(--font-display);
    color: var(--curso-color);
}
.curso-icon--romano {
    font-family: 'Palatino Linotype', 'Book Antiqua', Palatino, 'Times New Roman', serif;
    font-weight: 700;
    font-size: 1.3rem;
    letter-spacing: 0.05em;
}
.curso-icon--grado {
    font-family: 'Palatino Linotype', 'Book Antiqua', Palatino, 'Times New Roman', serif;
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: -0.02em;
}
.curso-icon--paes {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1rem;
    letter-spacing: 0.05em;
}
.curso-card-title {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}
.curso-card-desc {
    color: var(--text-muted);
    font-size: 0.87rem;
    line-height: 1.6;
    flex: 1;
    margin-bottom: 1rem;
}
.curso-card-meta {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 1.2rem;
}
.curso-card-meta span {
    color: var(--text-muted);
    font-size: 0.8rem;
}
.curso-card-footer {
    margin-top: auto;
    border-top: 1px solid var(--border);
    padding-top: 1rem;
}
.ver-curso-btn {
    color: var(--curso-color);
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.2s;
}
.curso-card:hover .ver-curso-btn { gap: 10px; }

/* Nivel badges */
.nivel-badge {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 3px 10px;
    border-radius: 100px;
}
.nivel-básico  { background: rgba(16,185,129,0.15); color: #34d399; border: 1px solid rgba(16,185,129,0.3); }
.nivel-intermedio { background: rgba(245,158,11,0.15); color: #fbbf24; border: 1px solid rgba(245,158,11,0.3); }
.nivel-avanzado { background: rgba(99,102,241,0.15); color: #a5b4fc; border: 1px solid rgba(99,102,241,0.3); }

/* ===== COURSE DETAIL HERO ===== */
.curso-hero {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 60px 0 50px;
    position: relative;
    overflow: hidden;
}
.curso-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 0% 50%, color-mix(in srgb, var(--curso-color) 12%, transparent) 0%, transparent 60%);
    pointer-events: none;
}

.curso-breadcrumb { margin-bottom: 1.5rem; position: relative; z-index: 1; }
.breadcrumb { background: none; padding: 0; margin: 0; }
.breadcrumb-item a { color: var(--text-muted); text-decoration: none; font-size: 0.85rem; }
.breadcrumb-item a:hover { color: var(--text); }
.breadcrumb-item.active { color: var(--text-muted); font-size: 0.85rem; }
.breadcrumb-item + .breadcrumb-item::before { color: var(--text-muted); }

.curso-hero-icon {
    font-family: var(--font-display);
    font-size: 2.5rem;
    width: 68px; height: 68px;
    background: color-mix(in srgb, var(--curso-color) 15%, transparent);
    border: 1px solid color-mix(in srgb, var(--curso-color) 30%, transparent);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--curso-color);
}

.curso-hero-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    color: var(--text);
    margin-bottom: 0.8rem;
    position: relative;
    z-index: 1;
}
.curso-hero-desc {
    color: var(--text-muted);
    font-size: 1rem;
    max-width: 560px;
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

.grado-badge {
    display: inline-block;
    background: var(--bg-card2);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.78rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 100px;
}

.curso-stats-card {
    background: var(--bg-card2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.4rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    position: relative;
    z-index: 1;
}
.curso-stat {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.curso-stat > i {
    font-size: 1.4rem;
    color: var(--curso-color);
    opacity: 0.8;
}
.curso-stat div { display: flex; flex-direction: column; }
.curso-stat strong { font-family: var(--font-display); font-size: 1.1rem; font-weight: 700; color: var(--text); }
.curso-stat small { color: var(--text-muted); font-size: 0.78rem; }

/* ===== UNITS & LESSONS ===== */
.unidades-section { padding: 60px 0 80px; }

.unidad-block {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 1.2rem;
    overflow: hidden;
    transition: border-color 0.2s;
}
.unidad-block:hover { border-color: rgba(255,255,255,0.12); }

.unidad-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.4rem 1.6rem;
    cursor: pointer;
    user-select: none;
    transition: background 0.2s;
}
.unidad-header:hover { background: var(--bg-card2); }

.unidad-number {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 800;
    color: #fff;
    flex-shrink: 0;
    margin-top: 2px;
}
.unidad-info { flex: 1; }
.unidad-emoji { font-size: 1.2rem; }
.unidad-title {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text);
    margin: 0;
}
.unidad-desc {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin: 4px 0 6px;
}
.unidad-count {
    color: var(--text-muted);
    font-size: 0.78rem;
}
.unidad-toggle-icon {
    color: var(--text-muted);
    font-size: 1.1rem;
    transition: transform 0.3s;
    flex-shrink: 0;
    padding-top: 4px;
}
.unidad-header[aria-expanded="false"] .unidad-toggle-icon { transform: rotate(-90deg); }

/* Lecciones */
.lecciones-list {
    border-top: 1px solid var(--border);
}
.leccion-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.9rem 1.6rem;
    border-bottom: 1px solid var(--border);
    transition: background 0.2s;
}
.leccion-item:last-child { border-bottom: none; }
.leccion-item:hover { background: var(--bg-card2); }

.leccion-num {
    width: 26px; height: 26px;
    border-radius: 50%;
    background: var(--bg-card2);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
    flex-shrink: 0;
}
.leccion-body {
    flex: 1;
    display: flex;
    flex-direction: column;
}
.leccion-title {
    color: var(--text);
    font-size: 0.92rem;
    font-weight: 600;
}
.leccion-desc {
    color: var(--text-muted);
    font-size: 0.78rem;
}
.leccion-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.leccion-dur {
    color: var(--text-muted);
    font-size: 0.78rem;
    white-space: nowrap;
}
.btn-leccion {
    width: 32px; height: 32px;
    border-radius: 50%;
    background: color-mix(in srgb, var(--curso-color) 15%, transparent);
    border: 1px solid color-mix(in srgb, var(--curso-color) 30%, transparent);
    color: var(--curso-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.75rem;
}
.btn-leccion:hover {
    background: var(--curso-color);
    color: #fff;
    transform: scale(1.1);
}
/* ===== DROPDOWN ===== */
.dropdown-menu {
    background: rgba(13, 15, 20, 0.95);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.dropdown-item {
    color: var(--text-muted);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
}

    .dropdown-item:hover {
        background: var(--bg-card);
        color: var(--text);
    }

    .dropdown-item.text-danger:hover {
        background: rgba(239, 68, 68, 0.1);
        color: #ef4444 !important;
    }

.dropdown-divider {
    border-color: var(--border);
}
.dropdown-toggle {
    color: var(--text) !important;
}

    .dropdown-toggle:hover,
    .dropdown-toggle:focus,
    .dropdown-toggle.show {
        color: var(--text) !important;
    }
/* Back button */
.btn-back {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-muted) !important;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.9rem;
    padding: 10px 22px;
    border-radius: 100px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    transition: all 0.2s;
}
.btn-back:hover {
    background: var(--bg-card2);
    color: var(--text) !important;
    border-color: rgba(255,255,255,0.15);
}

.btn-outline-magomatica {
    border: 1px solid var(--accent);
    color: var(--text) !important;
    background: transparent;
}

    .btn-outline-magomatica:hover,
    .btn-outline-magomatica:focus,
    .btn-outline-magomatica.show {
        background: rgba(99, 102, 241, 0.15);
        color: var(--text) !important;
        border-color: var(--accent);
    }
/* ===== FOOTER ===== */
.site-footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    padding: 2rem 0;
}
.footer-brand {
    font-family: var(--font-display);
    font-weight: 800;
    background: linear-gradient(135deg, #818cf8, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .hero-stats { flex-wrap: wrap; gap: 1rem; padding: 1rem; }
    .stat-item { padding: 0 1rem; }
    .stat-divider { display: none; }
    .curso-stats-card { margin-top: 1.5rem; flex-direction: row; flex-wrap: wrap; }
    .leccion-meta { flex-direction: column; align-items: flex-end; }
}

/* ===== MODALS DARK (integrados con el diseño) ===== */

.modal-content {
    background: var(--bg-card);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
}

.modal-header,
.modal-footer {
    border: none;
    background: transparent;
}

.modal-header {
    border-bottom: 1px solid var(--border);
}

.modal-footer {
    border-top: 1px solid var(--border);
}

/* Inputs dentro del modal */
.modal-content input,
.modal-content textarea,
.modal-content select {
    background: var(--bg-card2);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

    .modal-content input:focus,
    .modal-content textarea:focus,
    .modal-content select:focus {
        outline: none;
        border-color: var(--accent);
        box-shadow: 0 0 0 2px rgba(99,102,241,0.2);
    }

/* Backdrop (fondo oscuro detrás del modal) */
.modal-backdrop.show {
    background: #000;
    opacity: 0.7;
}

.form-control {
    background: var(--bg-card2) !important;
    color: var(--text) !important;
    border: 1px solid var(--border) !important;
    border-radius: var(--radius-sm) !important;
}

    .form-control:focus {
        outline: none !important;
        border-color: var(--accent) !important;
        box-shadow: 0 0 0 2px rgba(99,102,241,0.2) !important;
    }

    .form-control::placeholder {
        color: var(--text-muted) !important;
        opacity: 0.5;
    }

/* ===== SELECTS (dropdowns) =====
   Bootstrap 5 quita la flecha nativa (appearance:none) en .form-control, y el
   chevron de .form-select es gris oscuro (invisible en tema oscuro). Se dibuja
   un chevron propio para que todo select se vea como dropdown. */
select.form-control,
.form-select {
    appearance: none;
    -webkit-appearance: none;
    background-color: var(--bg-card2) !important;
    color: var(--text) !important;
    border: 1px solid var(--border) !important;
    border-radius: var(--radius-sm) !important;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e") !important;
    background-repeat: no-repeat !important;
    background-position: right 12px center !important;
    background-size: 14px 10px !important;
    padding-right: 38px !important;
    cursor: pointer;
}

[data-theme="light"] select.form-control,
[data-theme="light"] .form-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%235a6478' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e") !important;
}

/* El patrón .select-wrapper ya dibuja su propio ícono: evitar chevron doble */
.select-wrapper select.form-control,
.select-wrapper .form-select {
    background-image: none !important;
}

/* ===== TOOLBAR MATEMÁTICO ===== */
.toolbar-matematico {
    background: var(--bg-card2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
}

.toolbar-grupo {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
}

.toolbar-label {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-right: 4px;
    white-space: nowrap;
}

.toolbar-btn {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    font-size: 0.85rem;
    font-family: var(--font-body);
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}

    .toolbar-btn:hover {
        background: rgba(99, 102, 241, 0.15);
        border-color: rgba(99, 102, 241, 0.4);
        color: #a5b4fc;
    }

    .toolbar-btn:active {
        transform: scale(0.95);
    }

.toolbar-separador {
    width: 1px;
    height: 28px;
    background: var(--border);
    margin: 0 4px;
}

/* Campo activo con focus visible */
.toolbar-campo-activo {
    border-color: var(--accent) !important;
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2) !important;
}

/* ═══════════════════════════════════════════════════════════
   PERFIL DE USUARIO
   ═══════════════════════════════════════════════════════════ */

/* Hero del perfil */
.perfil-hero {
    background: linear-gradient(135deg, #0d0f14 0%, #13161e 100%);
    border-bottom: 1px solid var(--border);
    padding: 3rem 0 2.5rem;
}

.perfil-avatar-ring {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 110px;
    height: 110px;
    border-radius: 50%;
    background: conic-gradient(var(--accent), #a855f7, #ffd700, var(--accent));
    padding: 3px;
}

.perfil-avatar {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    border: 2px solid var(--bg-card);
}

.perfil-nombre {
    font-family: 'Syne', sans-serif;
    font-size: 1.8rem;
    font-weight: 800;
    color: #fff;
}

/* Badge de liga */
.liga-badge {
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 20px;
    padding: 3px 12px;
    font-size: 0.78rem;
    font-weight: 600;
    color: #a5b4fc;
    white-space: nowrap;
}

/* Badge de nivel */
.nivel-badge-web {
    background: linear-gradient(90deg, #ffd700, #ffb300);
    color: #000;
    border-radius: 20px;
    padding: 3px 12px;
    font-size: 0.78rem;
    font-weight: 700;
}

/* Barra XP del hero */
.perfil-xp-bar-wrap {
    max-width: 360px;
}

.perfil-progress {
    height: 8px;
    background: rgba(255,255,255,0.07);
    border-radius: 8px;
    overflow: hidden;
}

.perfil-progress-bar {
    background: linear-gradient(90deg, var(--accent), #a855f7);
    border-radius: 8px;
    transition: width 0.8s ease;
}

/* Grid de stats del hero */
.perfil-stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.perfil-stat {
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.perfil-stat-icon { font-size: 1.3rem; }
.perfil-stat strong { font-size: 1.3rem; color: #fff; line-height: 1; }
.perfil-stat small  { font-size: 0.7rem; color: rgba(180, 200, 235, 0.85); }

/* Fila de estadísticas en el card izquierdo */
.perfil-stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.88rem;
    color: var(--text-muted);
}
.perfil-stat-row:last-child { border-bottom: none; }

/* Mini barra de precisión */
.mini-progress {
    width: 80px;
    height: 5px;
    background: rgba(255,255,255,0.07);
    border-radius: 4px;
    overflow: hidden;
}
.mini-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), #a855f7);
    border-radius: 4px;
}

/* Liga grande */
.liga-emoji-grande { font-size: 3.5rem; line-height: 1; }
.liga-nombre-grande {
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    margin-top: 4px;
}

.liga-tiers {
    display: flex;
    justify-content: space-between;
    gap: 6px;
}

.liga-tier {
    flex: 1;
    text-align: center;
    padding: 8px 4px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.03);
    opacity: 0.4;
    font-size: 1.2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}
.liga-tier small { font-size: 0.62rem; color: rgba(180, 200, 235, 0.85); }
.liga-tier.superada { opacity: 0.6; }
.liga-tier.activa {
    opacity: 1;
    border-color: var(--accent);
    background: rgba(99, 102, 241, 0.1);
    box-shadow: 0 0 12px rgba(99, 102, 241, 0.2);
}

/* Tabs del perfil */
.perfil-tabs .nav-link {
    color: rgba(200, 215, 245, 0.75) !important;
    border-radius: 20px;
    padding: 5px 14px;
    font-size: 0.82rem;
    font-weight: 600;
    border: 1px solid transparent;
}
.perfil-tabs .nav-link:hover { color: #fff !important; background: rgba(255,255,255,0.05); }
.perfil-tabs .nav-link.active {
    background: rgba(99,102,241,0.18) !important;
    color: #c7d2fe !important;
    border-color: rgba(99,102,241,0.4) !important;
}

/* Grid de logros */
.logros-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 12px;
}

.logro-card {
    background: rgba(255,215,0,0.05);
    border: 1px solid rgba(255,215,0,0.2);
    border-radius: var(--radius);
    padding: 16px 10px;
    text-align: center;
    cursor: default;
    transition: transform 0.18s, box-shadow 0.18s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}
.logro-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(255,215,0,0.15);
}

.logro-emoji  { font-size: 2rem; line-height: 1; }
.logro-titulo { font-size: 0.72rem; font-weight: 700; color: #fff; line-height: 1.3; }
.logro-fecha  { font-size: 0.65rem; color: #ffd700; opacity: 0.8; }

/* Badge de XP/logros */
.badge-xp {
    background: rgba(255,215,0,0.1);
    border: 1px solid rgba(255,215,0,0.25);
    border-radius: 20px;
    padding: 4px 12px;
    font-size: 0.78rem;
    font-weight: 600;
    color: #ffd700;
}

/* Accent helper */
.text-accent { color: var(--accent) !important; }

/* ═══════════════════════════════════════════════════════════
   UNIDADES PERSONALIZADAS + GALERÍA
   ═══════════════════════════════════════════════════════════ */

/* Badges de visibilidad */
.vis-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 100px;
    white-space: nowrap;
}
.vis-privada { background: rgba(148,163,184,0.15); color: #cbd5e1; border: 1px solid rgba(148,163,184,0.3); }
.vis-publica { background: rgba(16,185,129,0.15); color: #34d399; border: 1px solid rgba(16,185,129,0.3); }
.vis-galeria { background: rgba(168,85,247,0.15); color: #c084fc; border: 1px solid rgba(168,85,247,0.35); }

/* Botones de ícono compactos (duplicar, eliminar, etc.) */
.btn-icono {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 8px;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border);
    color: rgba(200,215,245,0.8);
    font-size: 0.85rem;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.btn-icono:hover {
    background: rgba(99,102,241,0.18);
    color: #c7d2fe;
    border-color: rgba(99,102,241,0.4);
}
.btn-icono-danger:hover {
    background: rgba(239,68,68,0.18);
    color: #fca5a5;
    border-color: rgba(239,68,68,0.45);
}

/* Botón "Agregar a Unidad" en lista de lecciones */
.btn-agregar-unidad {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    background: rgba(99,102,241,0.12);
    border: 1px solid rgba(99,102,241,0.3);
    color: #a5b4fc;
    font-size: 0.85rem;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
    flex-shrink: 0;
}
.btn-agregar-unidad:hover {
    background: rgba(99,102,241,0.25);
    border-color: rgba(99,102,241,0.55);
    color: #c7d2fe;
}

/* Filas de unidad dentro del modal */
.modal-unidad-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.03);
}
.modal-unidad-row.incluida {
    border-color: rgba(99,102,241,0.4);
    background: rgba(99,102,241,0.08);
}
.modal-unidad-info {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
}
.modal-unidad-emoji { font-size: 1.2rem; flex-shrink: 0; }
.modal-unidad-titulo {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.modal-crear-unidad {
    border-top: 1px solid var(--border);
    padding-top: 14px;
}

/* Estrellas (display) */
.estrellas-display {
    color: #fbbf24;
    letter-spacing: 1px;
    font-size: 1rem;
}

/* Estrellas (input interactivo) — orden inverso en HTML */
.estrellas-input {
    display: inline-flex;
    flex-direction: row-reverse;
    gap: 2px;
    font-size: 1.6rem;
    line-height: 1;
}
.estrellas-input input { display: none; }
.estrellas-input label {
    color: rgba(255,255,255,0.2);
    cursor: pointer;
    transition: color 0.15s;
}
.estrellas-input label:hover,
.estrellas-input label:hover ~ label,
.estrellas-input input:checked ~ label {
    color: #fbbf24;
}

/* Checklist de ejercicios (Detalle + modal) */
.selector-ejercicios {
    padding: 0 1.4rem 1rem;
}
.ejercicios-checklist {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 6px;
    max-height: 260px;
    overflow-y: auto;
    padding: 4px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: rgba(0,0,0,0.15);
}
.ejercicio-check {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 10px;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.12s;
    font-size: 0.85rem;
    color: var(--text);
}
.ejercicio-check:hover { background: rgba(99,102,241,0.1); }
.ejercicio-check input[type="checkbox"] {
    width: 16px; height: 16px;
    accent-color: var(--accent);
    flex-shrink: 0;
}
.ejercicio-check-tipo { flex-shrink: 0; }
.ejercicio-check-titulo {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Caja del selector dentro del modal */
.modal-selector-box {
    margin-top: 6px;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: rgba(0,0,0,0.2);
}
.modal-selector-box .ejercicio-check { font-size: 0.82rem; }

/* Tarjeta de reseña */
.resena-card {
    background: var(--bg-card2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
}

/* Botón exportar PDF en lista de lecciones */
.btn-exportar-pdf {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.25);
    color: #f87171;
    font-size: 0.8rem;
    text-decoration: none;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
    flex-shrink: 0;
}
.btn-exportar-pdf:hover {
    background: rgba(239, 68, 68, 0.22);
    border-color: rgba(239, 68, 68, 0.5);
    color: #fca5a5;
}

/* Avatar clickeable (propio perfil) */
.perfil-avatar-btn {
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    position: relative;
    display: inline-flex;
    border-radius: 50%;
}
.perfil-avatar-btn:hover .perfil-avatar {
    opacity: 0.75;
}
.perfil-avatar-edit-hint {
    position: absolute;
    bottom: 4px;
    right: 4px;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    border: 2px solid var(--bg);
    pointer-events: none;
}

/* Botón lápiz junto al nombre */
.btn-editar-nombre {
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: rgba(255,255,255,0.35);
    padding: 4px 8px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    line-height: 1;
}
.btn-editar-nombre:hover {
    background: rgba(99,102,241,0.15);
    color: #a5b4fc;
    border-color: rgba(99,102,241,0.35);
}

/* Grid de selección de avatar */
.avatar-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    padding: 4px 0;
}

.avatar-opcion {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 14px 8px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.03);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, box-shadow 0.15s;
}
.avatar-opcion input[type="radio"] { display: none; }
.avatar-opcion:hover {
    background: rgba(99,102,241,0.1);
    border-color: rgba(99,102,241,0.3);
}
.avatar-opcion.seleccionado {
    background: rgba(99,102,241,0.18);
    border-color: var(--accent);
    box-shadow: 0 0 10px rgba(99,102,241,0.25);
}
.avatar-emoji  { font-size: 2.2rem; line-height: 1; }
.avatar-nombre { font-size: 0.72rem; color: var(--text-muted); font-weight: 600; }

/* ===== PAES Currículo — tema oscuro para componentes Bootstrap ===== */
/* Scopeado a .paes-curriculo para no afectar otras vistas (ej. Usuarios/Index) */

.paes-curriculo .card {
    --bs-card-bg: var(--bg-card);
    --bs-card-color: var(--text);
    --bs-card-border-color: var(--border);
}

.paes-curriculo .accordion {
    --bs-accordion-bg: transparent;
    --bs-accordion-color: var(--text);
    --bs-accordion-border-color: var(--border);
    --bs-accordion-btn-color: var(--text);
    --bs-accordion-btn-bg: transparent;
    --bs-accordion-active-bg: rgba(99, 102, 241, 0.12);
    --bs-accordion-active-color: #c7d2fe;
    --bs-accordion-btn-focus-box-shadow: none;
    /* Chevron claro (el SVG por defecto es oscuro y se pierde sobre fondo oscuro) */
    --bs-accordion-btn-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23c8d7f5'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
    --bs-accordion-btn-active-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23c7d2fe'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}

.paes-curriculo .accordion-item {
    border-color: var(--border);
}

/* Mismas superficies/fuentes que las listas de lecciones del detalle de curso */
.paes-curriculo .table {
    --bs-table-bg: transparent;
    --bs-table-color: var(--text);
    --bs-table-border-color: var(--border);
    --bs-table-hover-bg: var(--bg-card2);
    --bs-table-hover-color: var(--text);
    margin-bottom: 0;
}

/* Celdas: mismo tamaño y peso que .leccion-title del detalle de curso */
.paes-curriculo .table > tbody > tr > td {
    padding: 0.9rem 1rem;
    vertical-align: middle;
    font-size: 0.92rem;
}
.paes-curriculo .table tbody strong {
    color: var(--text);
    font-weight: 600;
}
.paes-curriculo .table tbody small.text-muted {
    color: var(--text-muted) !important;
    font-size: 0.78rem;
}

/* Encabezado discreto en mayúsculas (igual que la metainfo del detalle de curso) */
.paes-curriculo .table-light {
    --bs-table-bg: var(--bg-card2);
    --bs-table-color: var(--text-muted);
    --bs-table-border-color: var(--border);
}
.paes-curriculo .table > thead > tr > th {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    padding: 0.6rem 1rem;
}

/* Barras de acción ("Editar unidad" / "Nueva lección") */
.paes-curriculo .bg-light {
    background-color: var(--bg-card2) !important;
}