:root {
    --c51-bg-main: #f4f6f9;
    --c51-sidebar-bg: #1e2a3a; /* Azul oscuro corporativo Código51 */
    --c51-sidebar-text: #b8c7ce;
    --c51-sidebar-hover: #141c27;
    --c51-accent: #0073aa; /* Azul interactivo */
    --c51-accent-hover: #005177;
    --c51-white: #ffffff;
    --c51-text-dark: #333333;
    --c51-text-muted: #777777;
    --c51-border-color: #e2e8f0;
    
    /* Colores para Estados y KPIs */
    --c51-success: #2ecc71;
    --c51-pending: #f1c40f;
    --c51-danger: #e74c3c;
}

/* Contenedor Principal en Rejilla Modular */
.c51-portal-wrapper {
    display: table;
    width: 100%;
    table-layout: fixed;
    background-color: var(--c51-bg-main);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    margin: 20px 0;
    min-height: 600px;
    box-sizing: border-box;
}

.c51-portal-wrapper *, 
.c51-portal-wrapper *::before, 
.c51-portal-wrapper *::after {
    box-sizing: border-box;
}

/* BARRA LATERAL (IZQUIERDA) - Simulación de columna usando table-cell */
.c51-portal-sidebar {
    display: table-cell;
    width: 260px;
    background-color: var(--c51-sidebar-bg);
    vertical-align: top;
    padding: 30px 0;
    color: var(--c51-sidebar-text);
}

/* Cabecera del Usuario en la Barra Lateral */
.c51-sidebar-header {
    text-align: center;
    padding: 0 20px 25px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 20px;
}

.c51-user-avatar img {
    border-radius: 50%;
    border: 3px solid rgba(255, 255, 255, 0.15);
    margin-bottom: 12px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.c51-sidebar-header h3 {
    color: var(--c51-white);
    font-size: 16px;
    margin: 0 0 5px 0;
    font-weight: 600;
}

.c51-user-role {
    font-size: 12px;
    color: var(--c51-success);
    margin: 0;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Menú de Navegación */
.c51-portal-menu {
    display: block;
}

.c51-menu-item {
    display: block;
    padding: 14px 25px;
    color: var(--c51-sidebar-text);
    text-decoration: none !important;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    border-left: 4px solid transparent;
}

.c51-menu-item:hover {
    background-color: var(--c51-sidebar-hover);
    color: var(--c51-white);
}

.c51-menu-item.active {
    background-color: var(--c51-sidebar-hover);
    color: var(--c51-white);
    border-left-color: var(--c51-accent);
}

.c51-menu-item .dashicons {
    margin-right: 10px;
    vertical-align: text-bottom;
    font-size: 18px;
    width: 18px;
    height: 18px;
}

/* ÁREA DE CONTENIDO (DERECHA) */
.c51-portal-content {
    display: table-cell;
    vertical-align: top;
    padding: 35px;
    background-color: var(--c51-white);
}

/* Encabezado del Contenido */
.c51-content-header {
    border-bottom: 2px solid var(--c51-bg-main);
    padding-bottom: 15px;
    margin-bottom: 30px;
}

.c51-content-header h2 {
    font-size: 24px;
    color: var(--c51-sidebar-bg);
    margin: 0 0 5px 0;
    font-weight: 700;
}

.c51-current-date {
    font-size: 13px;
    color: var(--c51-text-muted);
}

/* Caja de Bienvenida */
.c51-welcome-box {
    background: linear-gradient(135deg, #eef2f7 0%, #dfe6ed 100%);
    padding: 25px;
    border-radius: 8px;
    margin-bottom: 30px;
    border-left: 5px solid var(--c51-accent);
}

.c51-welcome-box h3 {
    margin: 0 0 10px 0;
    color: var(--c51-sidebar-bg);
    font-size: 18px;
}

.c51-welcome-box p {
    margin: 0;
    color: #4a5568;
    line-height: 1.5;
    font-size: 14px;
}

/* Rejilla de Tarjetas KPI (Indicadores Rápidos) */
.c51-kpi-grid {
    display: block;
    margin-bottom: 30px;
}

.c51-kpi-card {
    display: inline-block;
    width: 31%;
    margin-right: 3%;
    background-color: var(--c51-white);
    border: 1px solid var(--c51-border-color);
    border-radius: 8px;
    padding: 20px;
    cursor: pointer;
    vertical-align: top;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 2px 5px rgba(0,0,0,0.02);
}

.c51-kpi-card:last-child {
    margin-right: 0;
}

.c51-kpi-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    border-color: var(--c51-accent);
}

.c51-kpi-icon {
    display: inline-block;
    width: 45px;
    height: 45px;
    background-color: rgba(0, 115, 170, 0.1);
    color: var(--c51-accent);
    border-radius: 8px;
    text-align: center;
    vertical-align: middle;
    margin-right: 15px;
}

.c51-kpi-icon .dashicons {
    font-size: 24px;
    line-height: 45px;
    width: 24px;
    height: 24px;
}

.c51-kpi-data {
    display: inline-block;
    vertical-align: middle;
}

.c51-kpi-data h4 {
    margin: 0 0 3px 0;
    font-size: 16px;
    color: var(--c51-sidebar-bg);
    font-weight: 600;
}

.c51-kpi-data p {
    margin: 0;
    font-size: 13px;
    color: var(--c51-accent);
    font-weight: 500;
}

/* Control de Visibilidad de Pestañas (Secciones) */
.c51-tab-section {
    display: none;
}

.c51-tab-section.active {
    display: block;
}

/* Estilos comunes para Tablas y Secciones Internas */
.c51-portal-section h2 {
    font-size: 20px;
    color: var(--c51-sidebar-bg);
    margin-top: 0;
    margin-bottom: 20px;
    font-weight: 600;
}

.c51-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

.c51-table th {
    background-color: var(--c51-bg-main);
    color: var(--c51-sidebar-bg);
    font-weight: 600;
    text-align: left;
    padding: 12px 15px;
    font-size: 14px;
    border-bottom: 2px solid var(--c51-border-color);
}

.c51-table td {
    padding: 12px 15px;
    border-bottom: 1px solid var(--c51-border-color);
    color: var(--c51-text-dark);
    font-size: 14px;
}

/* Adaptabilidad básica (Responsive) */
@media (max-width: 768px) {
    .c51-portal-wrapper, .c51-portal-sidebar, .c51-portal-content {
        display: block !important;
        width: 100% !important;
    }
    .c51-kpi-card {
        width: 100% !important;
        margin-right: 0 !important;
        margin-bottom: 15px;
    }
}