/**
 * Estilos globales - SGC Akademia360 v2
 * Usar en login, dashboard y futuras vistas.
 */

:root {
    --primary-cyan: #00bcd4;
    --light-cyan: #b2ebf2;
    --primary-magenta: #e91e63;
    --light-magenta: #f8bbd9;
    --pure-white: #ffffff;
    --soft-white: #fafafa;
    --light-gray: #f5f5f5;
    --text-dark: #212121;
    --text-medium: #424242;
    --text-light: #757575;
    --border-light: #e0e0e0;
    --shadow-soft: rgba(0, 0, 0, 0.08);
    --shadow-medium: rgba(0, 0, 0, 0.12);
    --nav-side-width: 270px;
    --nav-side-width-narrow: 104px;
}

body {
    background-color: var(--light-gray);
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
}

/* ---------- Login ---------- */
.login-page .container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.login-container {
    background-color: var(--pure-white);
    border-radius: 16px;
    box-shadow: 0 8px 32px var(--shadow-medium);
    border: 1px solid var(--border-light);
    width: 90%;
    max-width: 420px;
    margin: auto;
    padding: 3rem 2.5rem;
}

.login-container:hover {
    box-shadow: 0 12px 48px var(--shadow-medium);
}

.login-container .logo {
    height: 80px;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.login-container .form-control {
    padding: 1rem;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    transition: all 0.2s ease;
    font-size: 15px;
    background: var(--soft-white);
}

.login-container .form-control:focus {
    border-color: var(--primary-cyan);
    box-shadow: 0 0 0 3px rgba(0, 188, 212, 0.1);
    background: var(--pure-white);
    outline: none;
}

/* Foco visible accesible en elementos interactivos */
.a11y-focus-visible a:focus,
.a11y-focus-visible button:focus,
.a11y-focus-visible .btn:focus,
.a11y-focus-visible input:focus,
.a11y-focus-visible select:focus,
.a11y-focus-visible textarea:focus {
    outline: 2px solid var(--primary-cyan);
    outline-offset: 2px;
    box-shadow: 0 0 0 3px rgba(0, 188, 212, 0.25);
}

.login-container .btn-primary {
    background-color: var(--primary-cyan);
    border-color: var(--primary-cyan);
    padding: 1rem;
    font-weight: 500;
    font-size: 15px;
    border-radius: 8px;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px var(--shadow-soft);
}

.login-container .btn-primary:hover {
    background-color: var(--light-cyan);
    border-color: var(--light-cyan);
    color: var(--text-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--shadow-medium);
}

.login-container .error {
    color: var(--primary-magenta);
    background-color: var(--light-magenta);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    border: 1px solid var(--primary-magenta);
    font-weight: 500;
}

.login-container .success-message {
    color: var(--primary-cyan);
    background-color: var(--light-cyan);
    border: 1px solid var(--primary-cyan);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.login-header {
    border-bottom: 1px solid var(--border-light);
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
}

.login-container .form-label {
    color: var(--text-medium);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.login-container .input-group-text {
    background-color: var(--soft-white);
    border: 1px solid var(--border-light);
    color: var(--text-medium);
}

.login-container .form-control.is-invalid {
    border-color: var(--primary-magenta);
}

.login-container .invalid-feedback {
    color: var(--primary-magenta);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* ---------- App header (logo + menú horizontal) ---------- */
.app-header {
    background: linear-gradient(180deg, var(--pure-white) 0%, var(--soft-white) 100%);
    box-shadow: 0 2px 12px var(--shadow-soft);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 1030;
    transition: transform 0.28s ease;
}

.header-strip {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.35rem 0.5rem;
}

body:not(.nav-layout-side) .header-strip {
    max-width: 1320px;
    margin-left: auto;
    margin-right: auto;
    padding: 0.55rem 1.5rem 0.65rem;
}

.header-logo {
    text-align: center;
    padding: 1rem 0 0.5rem;
}

body:not(.nav-layout-side) .header-logo {
    text-align: left;
    padding: 0;
    flex: 0 0 auto;
}

.header-logo a {
    display: inline-block;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.header-logo a:hover {
    transform: scale(1.02);
    opacity: 0.95;
}

.logo-main {
    max-height: 70px;
    width: auto;
    object-fit: contain;
    max-width: 280px;
}

body:not(.nav-layout-side) .logo-main {
    max-height: 52px;
    max-width: 200px;
}

/* Contraer rail lateral: solo visible en modo menú lateral (body.nav-layout-side) */
/* Barras en em respecto al botón: escalan con zoom, font-size raíz y viewport */
.btn-side-rail-toggle {
    display: none !important;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    align-self: center;
    padding: clamp(0.45rem, 1.2vw, 0.55rem) clamp(0.5rem, 1.5vw, 0.65rem);
    min-width: clamp(2.4rem, 8vw, 2.75rem);
    min-height: clamp(2.4rem, 8vw, 2.75rem);
    line-height: 1;
    font-size: clamp(0.95rem, 2.8vw, 1.05rem);
}

body.nav-layout-side .btn-side-rail-toggle {
    display: inline-flex !important;
    margin-bottom: 0.25rem;
}

.side-rail-toggle-bars {
    position: relative;
    width: 1.375em;
    height: 1em;
    display: block;
}

.side-rail-toggle-bar {
    position: absolute;
    left: 0;
    right: 0;
    height: 0.125em;
    background-color: currentColor;
    border-radius: 0.0625em;
    transition: transform 0.22s ease, opacity 0.18s ease, top 0.22s ease;
}

body.nav-layout-side:not(.nav-side-narrow) .side-rail-toggle-bar:nth-child(1) {
    top: 0;
    transform: none;
    opacity: 1;
}

body.nav-layout-side:not(.nav-side-narrow) .side-rail-toggle-bar:nth-child(2) {
    top: 0.4375em;
    transform: none;
    opacity: 1;
}

body.nav-layout-side:not(.nav-side-narrow) .side-rail-toggle-bar:nth-child(3) {
    top: 0.875em;
    transform: none;
    opacity: 1;
}

body.nav-layout-side.nav-side-narrow .side-rail-toggle-bar:nth-child(1) {
    top: 0.4375em;
    transform: rotate(45deg);
    opacity: 1;
}

body.nav-layout-side.nav-side-narrow .side-rail-toggle-bar:nth-child(2) {
    top: 0.4375em;
    opacity: 0;
}

body.nav-layout-side.nav-side-narrow .side-rail-toggle-bar:nth-child(3) {
    top: 0.4375em;
    transform: rotate(-45deg);
    opacity: 1;
}

.nav-horizontal {
    background-color: transparent;
    padding: 0.5rem 0 1rem;
    border-top: 1px solid var(--border-light);
}

body:not(.nav-layout-side) .nav-horizontal {
    flex: 1 1 auto;
    min-width: 0;
    padding: 0;
    border-top: none;
}

.nav-horizontal-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    width: 100%;
}

body:not(.nav-layout-side) .nav-horizontal-inner {
    padding-left: 0;
    padding-right: 0;
    min-width: 0;
    align-items: center;
}

@media (min-width: 992px) {
    body:not(.nav-layout-side) .nav-horizontal-inner {
        flex-wrap: nowrap;
    }
}

.nav-horizontal .navbar-collapse {
    flex-grow: 0;
}

body:not(.nav-layout-side) .nav-horizontal .navbar-collapse {
    flex-grow: 1;
    min-width: 0;
    overflow: hidden;
}

body:not(.nav-layout-side) .nav-actions,
body:not(.nav-layout-side) .nav-user {
    flex-shrink: 0;
}

.nav-menu {
    gap: 0.25rem;
}

body:not(.nav-layout-side) .nav-horizontal .nav-menu {
    flex-direction: row;
    flex-wrap: nowrap;
    justify-content: flex-start;
    align-items: center;
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    padding-bottom: 0.2rem;
}

body:not(.nav-layout-side) .nav-horizontal .nav-item {
    flex-shrink: 0;
}

.nav-horizontal .nav-link {
    color: var(--text-medium) !important;
    padding: 0.6rem 1rem;
    border-radius: 8px;
    transition: all 0.25s ease;
    font-weight: 500;
}

body:not(.nav-layout-side) .nav-horizontal .nav-link {
    font-size: 0.8125rem;
    padding: 0.4rem 0.55rem;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    white-space: nowrap;
}

body:not(.nav-layout-side) .nav-horizontal .nav-link > i {
    font-size: 0.78rem;
    margin-right: 0.2rem !important;
}

.nav-horizontal .nav-link:hover {
    background-color: var(--light-cyan);
    color: var(--primary-cyan) !important;
    transform: translateY(-1px);
}

.nav-horizontal .nav-link.active {
    background-color: var(--primary-cyan);
    color: var(--pure-white) !important;
}

.nav-user .user-avatar {
    width: 36px;
    height: 36px;
    font-size: 0.85rem;
}

body:not(.nav-layout-side) .nav-user .user-avatar {
    width: 32px;
    height: 32px;
    font-size: 0.75rem;
}

body:not(.nav-layout-side) .nav-actions .btn-sm {
    font-size: 0.75rem;
    padding: 0.22rem 0.42rem;
}

.nav-actions {
    display: flex;
    gap: 0.4rem;
    align-items: center;
}

.nav-reopen-btn {
    position: fixed;
    z-index: 1041;
    display: none;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    background-color: var(--pure-white);
    box-shadow: 0 2px 12px var(--shadow-soft);
}

.nav-reopen-top {
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
}

.nav-reopen-side {
    left: 8px;
    top: 50%;
    transform: translateY(-50%);
}

body.nav-menu-collapsed:not(.nav-layout-side) .app-header {
    position: fixed;
    left: 0;
    right: 0;
    transform: translateY(-100%);
}

body.nav-layout-side .app-header {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--nav-side-width);
    height: 100vh;
    overflow-x: hidden;
    overflow-y: auto;
    scrollbar-gutter: stable;
    border-right: 1px solid var(--border-light);
    border-bottom: 0;
    transition: width 0.28s ease;
    box-sizing: border-box;
}

body.nav-layout-side.nav-side-narrow .app-header {
    width: var(--nav-side-width-narrow);
}

body.nav-layout-side .header-strip {
    flex-direction: column;
    align-items: stretch;
    flex: 1 1 auto;
    min-height: 0;
}

body.nav-layout-side .header-logo {
    padding: 0.75rem 0.75rem 0.35rem;
    text-align: center;
}

body.nav-layout-side .nav-horizontal {
    padding: 0.5rem 0.75rem 1rem;
    border-top: 1px solid var(--border-light);
}

body.nav-layout-side .nav-horizontal-inner {
    flex-direction: column;
    align-items: stretch;
}

body.nav-layout-side .nav-horizontal .navbar-collapse {
    display: block !important;
    width: 100%;
}

/* Menú lateral: el listado ya está siempre expuesto; el toggler de Bootstrap no aporta y duplica el icono de barras en móvil */
body.nav-layout-side .nav-horizontal .navbar-toggler {
    display: none !important;
}

body.nav-layout-side .nav-menu {
    flex-direction: column;
    gap: 0.2rem;
}

body.nav-layout-side .nav-actions {
    margin: 0.75rem 0;
    justify-content: flex-start;
}

body.nav-layout-side .nav-user {
    margin-top: 0.5rem;
    border-top: 1px solid var(--border-light);
    padding-top: 0.75rem;
}

body.nav-layout-side .app-main {
    margin-left: var(--nav-side-width);
    transition: margin-left 0.28s ease;
    min-height: 100vh;
    box-sizing: border-box;
}

body.nav-layout-side.nav-side-narrow .app-main {
    margin-left: var(--nav-side-width-narrow);
}

body:not(.nav-layout-side) .main-content {
    max-width: 1320px;
    margin-left: auto;
    margin-right: auto;
}

/* Menú lateral contraído a iconos */
body.nav-layout-side.nav-side-narrow .app-header {
    padding-left: 0.4rem;
    padding-right: 0.35rem;
}

body.nav-layout-side.nav-side-narrow .header-logo {
    padding: 0.4rem 0.2rem;
    text-align: center;
}

body.nav-layout-side.nav-side-narrow .logo-main {
    max-height: 40px;
    max-width: 56px;
    object-fit: contain;
}

body.nav-layout-side.nav-side-narrow .nav-link-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

body.nav-layout-side.nav-side-narrow .nav-horizontal .nav-link {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0.55rem 0.35rem;
    min-height: 2.75rem;
    box-sizing: border-box;
}

body.nav-layout-side.nav-side-narrow .nav-horizontal .nav-link > i {
    margin-right: 0 !important;
    font-size: 1.05rem;
    width: 1.35em;
    text-align: center;
    flex-shrink: 0;
}

body.nav-layout-side.nav-side-narrow .nav-user-name {
    display: none !important;
}

body.nav-layout-side.nav-side-narrow .nav-user .user-avatar {
    margin-right: 0 !important;
}

body.nav-layout-side.nav-side-narrow .nav-user .dropdown-toggle::after {
    display: none;
}

body.nav-layout-side.nav-side-narrow .nav-actions {
    flex-wrap: wrap;
    justify-content: center;
}

body.nav-layout-side.nav-side-narrow .nav-actions .btn {
    padding-left: 0.4rem;
    padding-right: 0.4rem;
}

/* Responsive: menú superior (sin hamburguesa): franja horizontal con scroll */
@media (max-width: 991.98px) {
    /* Ocultar botones de plegado/cambio de layout y riel lateral */
    .nav-actions {
        display: none !important;
    }
    body.nav-layout-side .btn-side-rail-toggle {
        display: none !important;
    }

    /* Forzar cabecera horizontal compacta para ambos layouts */
    .app-header {
        position: sticky !important;
        top: 0 !important;
        width: 100% !important;
        height: auto !important;
        border-right: 0 !important;
        border-bottom: 1px solid var(--border-light) !important;
        overflow: visible !important;
        transform: none !important;
    }
    body.nav-layout-side .app-header {
        position: sticky !important;
        width: 100% !important;
        height: auto !important;
        border-right: 0 !important;
    }

    /* Estructurar la franja superior en una sola fila */
    .header-strip {
        display: flex !important;
        flex-direction: row !important;
        flex-wrap: nowrap !important;
        align-items: center !important;
        justify-content: space-between !important;
        width: 100% !important;
        padding: 0.5rem 1rem !important;
        gap: 0.75rem !important;
        box-sizing: border-box;
    }

    .header-logo {
        padding: 0 !important;
        flex: 0 0 auto !important;
        text-align: left !important;
    }

    .logo-main {
        max-height: 42px !important;
        max-width: 160px !important;
        width: auto !important;
    }

    .nav-horizontal {
        flex: 1 1 auto !important;
        padding: 0 !important;
        border-top: none !important;
    }

    .nav-horizontal-inner {
        display: flex !important;
        flex-direction: row !important;
        flex-wrap: nowrap !important;
        align-items: center !important;
        justify-content: flex-end !important;
        gap: 0.5rem !important;
        width: 100% !important;
        padding: 0 !important;
    }

    /* Mostrar botón hamburguesa */
    body.nav-layout-side .nav-horizontal .navbar-toggler,
    body:not(.nav-layout-side) .nav-horizontal .navbar-toggler {
        display: inline-flex !important;
        align-items: center;
        justify-content: center;
        border: 1px solid var(--border-light) !important;
        border-radius: 8px !important;
        padding: 0.35rem 0.55rem !important;
        background-color: var(--soft-white) !important;
        color: var(--text-medium) !important;
        transition: all 0.2s ease;
        outline: none;
        order: 1; /* Poner el botón toggler antes o después */
    }
    body.nav-layout-side .nav-horizontal .navbar-toggler:hover,
    body.nav-layout-side .nav-horizontal .navbar-toggler:focus,
    body:not(.nav-layout-side) .nav-horizontal .navbar-toggler:hover,
    body:not(.nav-layout-side) .nav-horizontal .navbar-toggler:focus {
        background-color: var(--light-cyan) !important;
        color: var(--primary-cyan) !important;
        border-color: var(--primary-cyan) !important;
    }

    /* Contenedor del menú colapsable (absoluto flotante con glassmorphism) */
    body.nav-layout-side .nav-horizontal .navbar-collapse,
    body:not(.nav-layout-side) .nav-horizontal .navbar-collapse {
        position: absolute !important;
        top: 100% !important;
        left: 0 !important;
        right: 0 !important;
        background: rgba(255, 255, 255, 0.96) !important;
        backdrop-filter: blur(12px) !important;
        -webkit-backdrop-filter: blur(12px) !important;
        border-bottom: 1px solid var(--border-light) !important;
        box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08) !important;
        z-index: 1000 !important;
        padding: 1.25rem 1.5rem !important;
        max-height: calc(85vh) !important;
        overflow-y: auto !important;
        margin: 0 !important;
        display: none !important; /* Forzar ocultar por defecto */
    }
    
    body.nav-layout-side .nav-horizontal .navbar-collapse.show,
    body:not(.nav-layout-side) .nav-horizontal .navbar-collapse.show,
    body.nav-layout-side .nav-horizontal .navbar-collapse.collapsing,
    body:not(.nav-layout-side) .nav-horizontal .navbar-collapse.collapsing {
        display: block !important; /* Mostrar cuando se expande o está en transición */
    }

    /* Rejilla de enlaces de menú del dashboard */
    .nav-menu {
        display: grid !important;
        grid-template-columns: repeat(auto-fit, minmax(135px, 1fr)) !important;
        gap: 0.5rem !important;
        width: 100% !important;
        margin: 0 !important;
        padding: 0 !important;
        list-style: none !important;
    }

    .nav-horizontal .nav-item {
        width: 100% !important;
        display: block !important;
    }

    .nav-horizontal .nav-link {
        display: flex !important;
        align-items: center !important;
        gap: 0.5rem !important;
        padding: 0.7rem 0.85rem !important;
        border-radius: 8px !important;
        background-color: var(--light-gray) !important;
        color: var(--text-medium) !important;
        font-size: 0.825rem !important;
        font-weight: 500 !important;
        transition: all 0.2s ease !important;
        border: 1px solid transparent !important;
        white-space: nowrap !important;
        justify-content: flex-start !important;
        text-align: left !important;
    }
    .nav-horizontal .nav-link > i {
        font-size: 0.95rem !important;
        margin-right: 0 !important;
        color: var(--text-light) !important;
        width: 1.2em;
        text-align: center;
    }
    .nav-horizontal .nav-link:hover {
        background-color: var(--light-cyan) !important;
        color: var(--primary-cyan) !important;
        border-color: rgba(0, 188, 212, 0.2) !important;
        transform: none !important;
    }
    .nav-horizontal .nav-link:hover > i {
        color: var(--primary-cyan) !important;
    }
    .nav-horizontal .nav-link.active {
        background: linear-gradient(135deg, var(--primary-cyan) 0%, #00acc1 100%) !important;
        color: var(--pure-white) !important;
        box-shadow: 0 4px 10px rgba(0, 188, 212, 0.2) !important;
    }
    .nav-horizontal .nav-link.active > i {
        color: var(--pure-white) !important;
    }

    /* Alineación de la sección del usuario */
    .nav-user {
        margin: 0 !important;
        padding: 0 !important;
        border-top: none !important;
        display: flex !important;
        align-items: center !important;
        order: 2; /* Poner el avatar del usuario después de todo en la cabecera */
    }
    .nav-user .dropdown-toggle {
        padding: 0.2rem !important;
        display: flex !important;
        align-items: center !important;
    }
    .nav-user-name {
        display: none !important;
    }

    /* Asegurar que el contenido principal ocupe todo el ancho */
    body.nav-layout-side .app-main {
        margin-left: 0 !important;
        padding-top: 0 !important;
    }
    
    /* Anular traslaciones de cabecera contraída en móvil */
    body.nav-layout-side.nav-menu-collapsed .app-header,
    body.nav-menu-collapsed:not(.nav-layout-side) .app-header {
        transform: none !important;
    }
}

@media (max-width: 575.98px) {
    .logo-main {
        max-height: 48px;
        max-width: 180px;
    }
}

/* ---------- Main content ---------- */
.app-main {
    min-height: calc(100vh - 180px);
}

.main-content {
    padding: 1.5rem;
    animation: fadeInUp 0.4s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-title {
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: 2rem;
}

/* ---------- Cards ---------- */
.card {
    background-color: var(--pure-white);
    border: 1px solid var(--border-light);
    box-shadow: 0 2px 4px var(--shadow-soft);
    border-radius: 12px;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.card:hover {
    box-shadow: 0 4px 16px var(--shadow-soft);
}

.card-header {
    background-color: #1ba6cd;
    border-bottom: 1px solid var(--border-light);
    font-weight: 600;
    color: #fff;
}

/* ---------- Stat cards (compactas, icono + texto en fila) ---------- */
.stat-card {
    background-color: var(--pure-white);
    border-radius: 10px;
    padding: 0.65rem 0.85rem;
    box-shadow: 0 1px 4px var(--shadow-soft);
    border: 1px solid var(--border-light);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    column-gap: 0.65rem;
    row-gap: 0.1rem;
    align-items: center;
    min-height: 0;
}

.stat-card:hover {
    box-shadow: 0 4px 14px var(--shadow-medium);
    transform: translateY(-2px);
}

.stat-cards-row > .col:nth-child(1) .stat-card { animation: slideIn 0.35s ease-out 0.04s both; }
.stat-cards-row > .col:nth-child(2) .stat-card { animation: slideIn 0.35s ease-out 0.08s both; }
.stat-cards-row > .col:nth-child(3) .stat-card { animation: slideIn 0.35s ease-out 0.12s both; }
.stat-cards-row > .col:nth-child(4) .stat-card { animation: slideIn 0.35s ease-out 0.16s both; }

/* Reportes: filas .row sin stat-cards-row */
.row:not(.stat-cards-row) > .col:nth-child(1) .stat-card { animation: slideIn 0.35s ease-out 0.04s both; }
.row:not(.stat-cards-row) > .col:nth-child(2) .stat-card { animation: slideIn 0.35s ease-out 0.08s both; }

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.stat-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    margin-bottom: 0;
    grid-column: 1;
    grid-row: 1 / -1;
    align-self: center;
    flex-shrink: 0;
}

.stat-icon.primary {
    background-color: var(--light-cyan);
    color: var(--primary-cyan);
}

.stat-icon.success {
    background-color: #d4edda;
    color: #28a745;
}

.stat-icon.warning {
    background-color: #fff3cd;
    color: #ffc107;
}

.stat-icon.danger {
    background-color: var(--light-magenta);
    color: var(--primary-magenta);
}

.stat-number {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0;
    line-height: 1.15;
    grid-column: 2;
    grid-row: 1;
    align-self: end;
}

.stat-label {
    color: var(--text-medium);
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    line-height: 1.2;
    grid-column: 2;
    grid-row: 2;
    align-self: start;
    hyphens: auto;
    overflow-wrap: anywhere;
}

@media (min-width: 576px) {
    .stat-card {
        padding: 0.75rem 1rem;
        column-gap: 0.75rem;
    }

    .stat-icon {
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .stat-label {
        font-size: 0.72rem;
    }
}

@media (min-width: 992px) {
    .stat-number {
        font-size: 1.65rem;
    }

    .stat-label {
        font-size: 0.75rem;
    }
}

/* ---------- Activity list ---------- */
.activity-item {
    padding: 1rem;
    border-bottom: 1px solid var(--border-light);
    transition: background-color 0.2s ease;
}

.activity-item:hover {
    background-color: var(--soft-white);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-time {
    color: var(--text-light);
    font-size: 0.8rem;
}

/* ---------- Breadcrumbs ---------- */
.breadcrumb {
    font-size: 0.9rem;
}

.breadcrumb-item a {
    color: var(--primary-cyan);
    text-decoration: none;
}

.breadcrumb-item a:hover {
    text-decoration: underline;
}

.breadcrumb-item.active {
    color: var(--text-medium);
}

/* ---------- Tables ---------- */
.table-hover tbody tr {
    transition: background-color 0.2s ease;
}

.empresa-row-clickable {
    cursor: pointer;
}

.empresa-row-clickable:hover {
    background-color: var(--light-gray);
}

.empresa-row-actions {
    overflow: visible !important;
    position: relative;
}

/* Indicador sin clase final (esquina del nombre del curso) */
.curso-nombre-cell {
    position: relative;
    display: inline-block;
}

.curso-nombre-cell.sin-clase-final {
    padding-right: 22px;
}

.curso-nombre-cell .indicador-sin-final {
    position: absolute;
    top: 0;
    right: 0;
    opacity: 0.85;
    filter: invert(48%) sepia(93%) saturate(1500%) hue-rotate(360deg);
}

/* ---------- Buttons ---------- */
.btn {
    transition: all 0.25s ease;
}

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

.btn:active {
    transform: translateY(0);
}

/* ---------- Form help / notas explicativas (compacto) ---------- */
.form-help {
    background: linear-gradient(135deg, #f4f7f9 0%, #eef2f5 100%);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 4px var(--shadow-soft);
    font-size: 0.875rem;
    line-height: 1.55;
}

.form-help .form-help-title {
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.form-help ul {
    padding-left: 1.25rem;
    margin-bottom: 0;
}

.form-help li {
    margin-bottom: 0.35rem;
}

.form-help li:last-child {
    margin-bottom: 0;
}

/* ---------- User avatar (navbar) ---------- */
.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--light-cyan);
    color: var(--primary-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    text-transform: uppercase;
}

.modal {
    z-index: 1055 !important;
}

.modal-backdrop {
    z-index: 1050 !important;
}

.table-responsive {
    overflow-x: auto !important;
}

.empresa-row-actions {
    position: relative;
    overflow: visible !important;
}

.dropdown-menu {
    z-index: 1060;
    background-color: var(--cui-dropdown-bg, var(--bs-body-bg, #fff));
    color: var(--cui-dropdown-color, var(--bs-body-color, #212631));
    border-color: var(--cui-dropdown-border-color, var(--bs-border-color, #dee2e6));
}

/* Tom Select usa variables --bs-*; CoreUI no las define sin este puente */
:root,
[data-coreui-theme="light"],
html[data-bs-theme="light"] {
    --bs-body-bg: var(--cui-body-bg, #fff);
    --bs-body-color: var(--cui-body-color, #212631);
    --bs-border-radius: var(--cui-border-radius, 0.375rem);
    --bs-tertiary-bg: var(--cui-tertiary-bg, #f3f4f7);
    --bs-border-color: var(--cui-border-color, #dbdfe6);
}

html.sgc-theme-dark {
    --bs-body-bg: #1c1c1c;
    --bs-body-color: #ffffff;
    --bs-tertiary-bg: #2b2b2b;
    --bs-border-color: #3a3a3a;
}

.ts-wrapper .ts-control {
    background-color: var(--bs-body-bg, #fff);
    color: var(--bs-body-color, #212631);
}

.ts-dropdown,
.ts-dropdown .dropdown-input,
.ts-dropdown .optgroup-header {
    background-color: var(--bs-body-bg, #fff) !important;
    color: var(--bs-body-color, #212631);
}

.ts-dropdown {
    z-index: 2000 !important;
    border: 1px solid var(--bs-border-color, #dee2e6);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.ts-dropdown .option.active,
.ts-dropdown .option:hover,
.ts-dropdown .active {
    background-color: var(--bs-tertiary-bg, #f3f4f7) !important;
    color: var(--bs-body-color, #212631);
}

.sgc-header-tenant .ts-dropdown {
    z-index: 2050 !important;
}


/* ---------- CoreUI layout (sidebar + header) ---------- */
:root {
    --cui-primary: #00bcd4;
    --cui-primary-rgb: 0, 188, 212;
    --bs-primary: #00bcd4;
    --bs-primary-rgb: 0, 188, 212;
}

/* CoreUI compila su morado original (#5856d6) en los estados de foco de formularios,
   sin pasar por --cui-primary; se reemplaza por el color institucional. */
.form-check-input:checked,
.form-check-input[type=checkbox]:indeterminate {
    background-color: var(--primary-cyan);
    border-color: var(--primary-cyan);
}

.form-check-input:focus,
.form-control:focus,
.form-select:focus {
    border-color: #80deea;
    box-shadow: 0 0 0 0.25rem rgba(0, 188, 212, 0.25);
}

.form-switch .form-check-input:focus:not(:checked) {
    --cui-form-switch-bg: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='%2380deea'/%3e%3c/svg%3e");
}

/* El paquete de CoreUI solo publica --cui-sidebar-occupy-*; reservar el espacio
   del menú lateral es responsabilidad del layout. */
.sgc-coreui .wrapper {
    width: 100%;
    min-width: 0;
    padding-inline-start: var(--cui-sidebar-occupy-start, 0);
    padding-inline-end: var(--cui-sidebar-occupy-end, 0);
    transition: padding 0.15s;
}

@media (prefers-reduced-motion: reduce) {
    .sgc-coreui .wrapper {
        transition: none;
    }
}

.sgc-coreui .sidebar {
    --cui-sidebar-nav-link-padding-y: 0.55rem;
    --cui-sidebar-nav-title-margin-top: 0.5rem;
    --cui-sidebar-nav-title-padding-y: 0.5rem;
    --cui-sidebar-nav-link-icon-font-size: 1rem;
}

.sgc-coreui .sidebar-header {
    min-height: 4rem;
    overflow: hidden;
}

.sgc-coreui .sidebar-brand {
    min-width: 0;
    overflow: hidden;
}

.sgc-coreui .sidebar-brand-full {
    max-height: 30px;
    max-width: 100%;
    width: auto;
    object-fit: contain;
}

.sgc-coreui .sidebar-brand-narrow {
    max-height: 28px;
    max-width: 28px;
    object-fit: contain;
}

.sgc-coreui .sidebar .nav-icon {
    width: var(--cui-sidebar-nav-link-icon-width);
    height: var(--cui-sidebar-nav-link-icon-height);
    font-size: var(--cui-sidebar-nav-link-icon-font-size);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* Alinea el borde inferior del header con el del encabezado del menú lateral. */
.sgc-coreui .header > .container-fluid:first-child {
    min-height: 4rem;
}

.sgc-coreui .header .user-avatar {
    width: 32px;
    height: 32px;
    font-size: 0.75rem;
}

.sgc-header-tenant {
    min-width: 200px;
    max-width: 280px;
    flex: 1 1 auto;
}

.sgc-header-tenant .ts-wrapper {
    min-width: 200px;
}

/* Dropdowns del header: no recortar en sticky header y quedar por encima del contenido. */
.sgc-coreui .header {
    overflow: visible !important;
}

.sgc-coreui .header > .container-fluid {
    overflow: visible !important;
}

.sgc-coreui .header-nav .nav-item.dropdown {
    position: relative;
}

.sgc-coreui .header-nav .dropdown-menu {
    z-index: 1075 !important;
    position: absolute;
    top: 100%;
    right: 0;
    left: auto;
    display: none;
    margin-top: 0.25rem;
    min-width: 10rem;
    background-color: #fff !important;
    border: 1px solid var(--bs-border-color, #dee2e6);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.sgc-coreui .header-nav .dropdown-menu.show {
    display: block !important;
}

.sgc-coreui .header-nav #sgcUserMenuToggle,
.sgc-coreui .header-nav #sgcThemeToggle {
    cursor: pointer;
    border: 0;
    text-decoration: none;
}

/* Modo oscuro CoreUI: reglas de layout en bloque unificado más abajo (.sgc-theme-dark) */

.sgc-coreui .main-content {
    padding: 0 0 1.5rem;
    animation: none;
}

.sgc-coreui .app-main {
    min-height: 0;
}

.sgc-coreui .header .breadcrumb {
    margin-bottom: 0;
}

.sgc-coreui .page-title {
    margin-top: 0.25rem;
    margin-bottom: 1.25rem;
    font-size: 1.5rem;
}

@media (max-width: 991.98px) {
    .sgc-header-tenant {
        max-width: 180px;
        min-width: 140px;
    }

    .sgc-coreui .page-title {
        font-size: 1.25rem;
    }
}

.card-group > .card {
    border-radius: 0;
}

@media (min-width: 768px) {
    .card-group > .card:not(:last-child) {
        border-top-right-radius: 0;
        border-bottom-right-radius: 0;
    }
    .card-group > .card:not(:first-child) {
        border-top-left-radius: 0;
        border-bottom-left-radius: 0;
    }
}

.sgc-coreui .btn-primary {
    --cui-btn-color: #fff;
    --cui-btn-bg: #00bcd4;
    --cui-btn-border-color: #00bcd4;
    --cui-btn-hover-bg: #00acc1;
    --cui-btn-hover-border-color: #00acc1;
    --bs-btn-color: #fff;
    --bs-btn-bg: #00bcd4;
    --bs-btn-border-color: #00bcd4;
    --bs-btn-hover-bg: #00acc1;
    --bs-btn-hover-border-color: #00acc1;
}

@media print {
    .sgc-coreui .sidebar,
    .sgc-coreui .header {
        display: none !important;
    }
    .sgc-coreui .wrapper {
        margin: 0 !important;
        padding: 0 !important;
    }
}

/* ---------- Modo oscuro real (solo clase sgc-theme-dark) ---------- */
html.sgc-theme-dark {
    color-scheme: dark;
    --sgc-canvas: #111111;
    --sgc-surface: #1c1c1c;
    --sgc-surface-raised: #2b2b2b;
    --pure-white: #1c1c1c;
    --soft-white: #2b2b2b;
    --light-gray: #111111;
    --text-dark: #ffffff;
    --text-medium: #eaeaea;
    --text-light: #b8b8b8;
    --border-light: #3a3a3a;
    --shadow-soft: rgba(0, 0, 0, 0.45);
    --shadow-medium: rgba(0, 0, 0, 0.6);
    --light-cyan: rgba(0, 188, 212, 0.22);
    --light-magenta: rgba(233, 30, 99, 0.22);
    --bs-body-bg: #111111;
    --bs-body-color: #ffffff;
    --bs-secondary-color: #b8b8b8;
    --bs-tertiary-bg: #2b2b2b;
    --bs-border-color: #3a3a3a;
    --bs-card-bg: #1c1c1c;
    --cui-body-bg: #111111;
    --cui-body-color: #ffffff;
}

html.sgc-theme-dark,
html.sgc-theme-dark body,
html.sgc-theme-dark body.sgc-coreui {
    background-color: #111111 !important;
    color: #ffffff !important;
}

html.sgc-theme-dark .sgc-coreui .wrapper,
html.sgc-theme-dark .sgc-coreui .body.flex-grow-1,
html.sgc-theme-dark .sgc-coreui .main-content {
    background-color: #111111 !important;
    color: #ffffff !important;
}

html.sgc-theme-dark .sgc-coreui .header {
    --cui-header-bg: #1c1c1c;
    background-color: #1c1c1c !important;
    border-color: #3a3a3a !important;
    color: #ffffff !important;
}

html.sgc-theme-dark .sgc-coreui .header .nav-link,
html.sgc-theme-dark .sgc-coreui .header-toggler,
html.sgc-theme-dark .sgc-coreui .breadcrumb-item,
html.sgc-theme-dark .sgc-coreui .breadcrumb-item.active,
html.sgc-theme-dark .sgc-coreui .page-title {
    color: #ffffff !important;
}

html.sgc-theme-dark .sgc-coreui .breadcrumb-item a {
    color: #4dd0e1 !important;
}

html.sgc-theme-dark .sgc-coreui .card,
html.sgc-theme-dark .sgc-coreui .stat-card,
html.sgc-theme-dark .sgc-coreui .modal-content,
html.sgc-theme-dark .sgc-coreui .list-group-item,
html.sgc-theme-dark .sgc-coreui .dropdown-menu,
html.sgc-theme-dark .sgc-coreui .header-nav .dropdown-menu {
    background-color: #1c1c1c !important;
    border-color: #3a3a3a !important;
    color: #ffffff !important;
}

html.sgc-theme-dark .sgc-coreui .card-header {
    background-color: #1ba6cd !important;
    color: #ffffff !important;
    border-bottom-color: #1ba6cd !important;
}

html.sgc-theme-dark .sgc-coreui .card-body,
html.sgc-theme-dark .sgc-coreui .card-body p,
html.sgc-theme-dark .sgc-coreui .card-body strong,
html.sgc-theme-dark .sgc-coreui .stat-number,
html.sgc-theme-dark .sgc-coreui .activity-item,
html.sgc-theme-dark .sgc-coreui .activity-item .fw-semibold,
html.sgc-theme-dark .sgc-coreui .text-dark,
html.sgc-theme-dark .sgc-coreui .form-label,
html.sgc-theme-dark .sgc-coreui .form-check-label {
    color: #ffffff !important;
}

html.sgc-theme-dark .sgc-coreui .text-muted,
html.sgc-theme-dark .sgc-coreui .text-body-secondary,
html.sgc-theme-dark .sgc-coreui .form-text,
html.sgc-theme-dark .sgc-coreui .stat-label,
html.sgc-theme-dark .sgc-coreui .activity-time,
html.sgc-theme-dark .sgc-coreui .breadcrumb-item + .breadcrumb-item::before {
    color: #cfcfcf !important;
}

html.sgc-theme-dark .sgc-coreui .activity-item {
    border-bottom-color: #3a3a3a !important;
}

html.sgc-theme-dark .sgc-coreui .activity-item:hover {
    background-color: #2b2b2b !important;
}

html.sgc-theme-dark .sgc-coreui .bg-light,
html.sgc-theme-dark .sgc-coreui .bg-white,
html.sgc-theme-dark .sgc-coreui .bg-body,
html.sgc-theme-dark .sgc-coreui .bg-body-tertiary,
html.sgc-theme-dark .sgc-coreui .alert,
html.sgc-theme-dark .sgc-coreui .alert-info,
html.sgc-theme-dark .sgc-coreui .alert-warning,
html.sgc-theme-dark .sgc-coreui .alert-light,
html.sgc-theme-dark .sgc-coreui .form-help {
    background: #2b2b2b !important;
    background-color: #2b2b2b !important;
    border-color: #3a3a3a !important;
    color: #ffffff !important;
}

html.sgc-theme-dark .sgc-coreui .alert-success {
    background: #1e3d2f !important;
    background-color: #1e3d2f !important;
    border-color: #2f6b4a !important;
    color: #a6e6c3 !important;
}

html.sgc-theme-dark .sgc-coreui .alert-success .fas,
html.sgc-theme-dark .sgc-coreui .alert-success strong {
    color: #7ddea8 !important;
}

html.sgc-theme-dark .sgc-coreui .alert-danger {
    background: #3d1e1e !important;
    background-color: #3d1e1e !important;
    border-color: #8b3a3a !important;
    color: #f0b4b4 !important;
}

html.sgc-theme-dark .sgc-coreui .alert-danger .fas,
html.sgc-theme-dark .sgc-coreui .alert-danger strong {
    color: #ff8e8e !important;
}

html.sgc-theme-dark .sgc-coreui .form-control,
html.sgc-theme-dark .sgc-coreui .form-select,
html.sgc-theme-dark .sgc-coreui .input-group-text,
html.sgc-theme-dark .ts-wrapper .ts-control,
html.sgc-theme-dark .ts-dropdown {
    background-color: #2b2b2b !important;
    border-color: #3a3a3a !important;
    color: #ffffff !important;
}

html.sgc-theme-dark .sgc-coreui .table {
    --bs-table-bg: #2a2a2a;
    --bs-table-color: #ffffff;
    --bs-table-border-color: #3f3f3f;
    --bs-table-striped-bg: #323232;
    --bs-table-hover-bg: #333333;
    --cui-table-bg: #2a2a2a;
    --cui-table-color: #ffffff;
    --cui-table-border-color: #3f3f3f;
    --cui-table-striped-bg: #323232;
    --cui-table-hover-bg: #333333;
    background-color: #2a2a2a !important;
    color: #ffffff !important;
}

html.sgc-theme-dark .sgc-coreui .table > :not(caption) > * > *,
html.sgc-theme-dark .sgc-coreui .table td,
html.sgc-theme-dark .sgc-coreui .table th,
html.sgc-theme-dark .sgc-coreui .table tbody,
html.sgc-theme-dark .sgc-coreui .table thead {
    background-color: #2a2a2a !important;
    color: #ffffff !important;
    border-color: #3f3f3f !important;
}

html.sgc-theme-dark .sgc-coreui .table-hover > tbody > tr:hover > *,
html.sgc-theme-dark .sgc-coreui .table-hover tbody tr:hover {
    background-color: #333333 !important;
    color: #ffffff !important;
}

html.sgc-theme-dark .sgc-coreui .table-striped > tbody > tr:nth-of-type(odd) > * {
    background-color: #323232 !important;
    color: #ffffff !important;
}

html.sgc-theme-dark .sgc-coreui .table-light,
html.sgc-theme-dark .sgc-coreui thead.table-light,
html.sgc-theme-dark .sgc-coreui .table > thead.table-light th {
    background-color: #2b2b2b !important;
    color: #ffffff !important;
    border-color: #3a3a3a !important;
}

html.sgc-theme-dark .sgc-coreui .dropdown-item {
    color: #ffffff !important;
}

html.sgc-theme-dark .sgc-coreui .dropdown-item:hover,
html.sgc-theme-dark .sgc-coreui .dropdown-item:focus {
    background-color: #2b2b2b !important;
    color: #ffffff !important;
}

html.sgc-theme-dark .sgc-coreui .btn-outline-secondary,
html.sgc-theme-dark .sgc-coreui .btn-outline-dark,
html.sgc-theme-dark .sgc-coreui .btn-light,
html.sgc-theme-dark .sgc-coreui .btn-dark {
    background-color: #2b2b2b;
    border-color: #555;
    color: #ffffff;
}

html.sgc-theme-dark .sgc-coreui .btn-primary {
    background-color: #00bcd4;
    border-color: #00bcd4;
    color: #fff;
}

html.sgc-theme-dark .sgc-coreui .user-avatar {
    background-color: #2b2b2b;
    color: #fff;
}

html.sgc-theme-dark .sgc-coreui .page-link {
    background-color: #1c1c1c;
    border-color: #3a3a3a;
    color: #ffffff;
}

html.sgc-theme-dark .sgc-coreui hr,
html.sgc-theme-dark .sgc-coreui .border,
html.sgc-theme-dark .sgc-coreui .border-top,
html.sgc-theme-dark .sgc-coreui .border-bottom {
    border-color: #3a3a3a !important;
}

html.sgc-theme-dark .sgc-coreui .sidebar.sidebar-dark {
    background: #141414 !important;
    border-color: #2b2b2b !important;
}