:root {
    --nav-bg-color: #f8f9fa;
    --nav-text-color: #2563eb;
    --nav-active-bg: #e3eefd;
    --nav-active-text: #174ea6;
    --nav-hover-bg: #e3eefd;
    --nav-hover-text: #174ea6;
    --nav-shadow: 0 4px 24px rgba(37,99,235,0.07);
}

/* Navigation styles */
.navigation {
    position: fixed;
    top: 64px;
    left: 0;
    width: 240px;
    height: calc(100vh - 64px);
    background: transparent;
    padding: 1rem 0;
    z-index: 100;
    overflow-y: auto;
}

.nav-panel {
    padding: 1rem;
}

.nav-header {
    margin-bottom: 1.5rem;
}

.nav-header h4 {
    color: var(--nav-text-color);
    margin: 0;
}

.nav-items {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    border: 1px solid #dee2e6;
    border-radius: 0.375rem;
    background-color: #CCD4DB;
    color: #fff;
    text-decoration: none;
    transition: all 0.2s ease-in-out;
    cursor: pointer;
    font-weight: 500;
    font-family: 'Montserrat', Arial, sans-serif;
}

.nav-item:hover {
    background-color: #b0bac4;
    border-color: #3A6A97;
    color: #fff;
    transform: translateX(4px);
}

.nav-item.active {
    background-color: #3A6A97;
    border-color: #3A6A97;
    color: #fff;
    font-weight: 600;
}

.nav-item i {
    margin-right: 0.75rem;
    font-size: 1.1rem;
}

/* Mobile styles */
@media (max-width: 900px) {
    .navigation {
        width: 60px;
    }
    
    .nav-header h4 {
        display: none;
    }
    
    .nav-item {
        padding: 0.75rem;
        justify-content: center;
    }
    
    .nav-item i {
        margin-right: 0;
    }
    
    .nav-item span {
        display: none;
    }
}

.content-panel {
    /* margin-left: 250px; */
    padding: 2rem;
    min-height: 100vh;
    background-color: #f8f9fa;
    transition: margin-left 0.3s;
}

/* Responsive design */
@media (max-width: 900px) {
    .nav-panel {
        width: 60px;
        padding: 1rem 0.5rem;
    }
    
    .content-panel {
        /* margin-left: 60px; */
        padding: 1rem;
    }
}