:root {
    --sidebar-width: 250px;
    --sidebar-bg: #121214;
    --sidebar-text: #a0a0a0;
    --sidebar-hover: #ffffff;
    --sidebar-accent: #1a4cd2;
    --sidebar-border: #1f1f23;
}

/* Layout base para las páginas con sidebar */
body.with-sidebar {
    padding-left: var(--sidebar-width);
    display: block; /* Override flex display from original styles if needed */
}

/* Contenedor principal del sidebar */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    padding: 2rem 0;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    box-shadow: 4px 0 24px rgba(0,0,0,0.2);
}

/* Título o Logo del Sidebar */
.sidebar-header {
    padding: 0 2rem;
    margin-bottom: 3rem;
    color: var(--sidebar-hover);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-bottom: 1px solid var(--sidebar-border);
    padding-bottom: 2rem;
}

/* Lista de navegación */
.sidebar-nav {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.sidebar-nav li {
    position: relative;
    padding: 0 1rem;
}

/* Enlaces */
.sidebar-nav a {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    color: var(--sidebar-text);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
}

.sidebar-nav a:hover, .sidebar-nav a.active {
    color: var(--sidebar-hover);
    background-color: rgba(26, 76, 210, 0.1);
}

.sidebar-nav a:hover::before, .sidebar-nav a.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    height: 60%;
    width: 3px;
    background-color: var(--sidebar-accent);
    border-top-right-radius: 4px;
    border-bottom-right-radius: 4px;
}

/* Footer del Sidebar */
.sidebar-footer {
    margin-top: auto;
    padding: 2rem;
    font-size: 0.8rem;
    color: #555;
    text-align: center;
}

/* Ajustes Responsive */
@media (max-width: 768px) {
    body.with-sidebar {
        padding-left: 0;
        padding-top: 60px; /* Espacio para barra móvil */
    }

    .sidebar {
        width: 100%;
        height: 60px;
        flex-direction: row;
        align-items: center;
        padding: 0 1rem;
        border-right: none;
        border-bottom: 1px solid var(--sidebar-border);
    }

    .sidebar-header {
        margin: 0;
        font-size: 1.2rem;
        padding: 0;
        border: none;
        margin-right: auto;
    }

    .sidebar-nav {
        flex-direction: row;
    }

    .sidebar-nav a {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
    
    .sidebar-footer {
        display: none;
    }
}