:root {
    --menu-width: 300px;
    --primary-color: #4a90e2;
    --primary-dark: #357abd;
    --secondary-color: #f0f2f5;
    --text-color: #333;
    --light-text: #777;
    --border-color: #ddd;
    --menu-bg: #ffffff;
    --hover-bg: #f8f9fa;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--secondary-color);
    display: flex;
    min-height: 100vh;
}

.menu-sidebar {
    padding-top: 130px;
    width: var(--menu-width);
    background: var(--menu-bg);
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.1);
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) var(--hover-bg);
}

.menu-sidebar::-webkit-scrollbar {
    width: 6px;
}

.menu-sidebar::-webkit-scrollbar-track {
    background: var(--hover-bg);
}

.menu-sidebar::-webkit-scrollbar-thumb {
    background-color: var(--primary-color);
    border-radius: 3px;
}

.menu-header {
    padding: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    text-align: center;
    position: sticky;
    top: 0;
    z-index: 10;
}

.menu-header h2 {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.menu-header p {
    font-size: 0.9rem;
    opacity: 0.9;
}

.menu-items {
    padding: 20px 0;
}

.menu-category {
    padding: 10px 20px;
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--light-text);
    font-weight: 600;
    letter-spacing: 1px;
}

.menu-item {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.menu-item:hover {
    background: var(--hover-bg);
    border-left-color: var(--primary-color);
}

.menu-item i {
    width: 24px;
    margin-right: 15px;
    color: var(--primary-color);
}

.menu-item-content {
    flex: 1;
}

.menu-item-title {
    font-weight: 600;
    margin-bottom: 3px;
}

.menu-item-description {
    font-size: 0.8rem;
    color: var(--light-text);
}

.menu-footer {
    padding: 20px;
    text-align: center;
    font-size: 0.8rem;
    color: var(--light-text);
    border-top: 1px solid var(--border-color);
}

.content-wrapper {
    margin-top: 130px;
    margin-left: var(--menu-width);
    flex: 1;
    padding: 20px;
}

@media (max-width: 768px) {
    .menu-sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .menu-sidebar.active {
        transform: translateX(0);
    }

    .content-wrapper {
        margin-left: 0;
    }


    .menu-toggle {
        position: fixed;
        top: 20px;
        left: 20px;
        width: 40px;
        height: 40px;
        background: var(--primary-color);
        color: white;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        z-index: 1000;
        box-shadow: 0 2px 5px rgba(0,0,0,0.2);
        transition: all 0.3s ease;
    }

    .menu-toggle:hover {
        transform: scale(1.1);
    } 
}