/* Reset & base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f4f4;
    color: #333;
    line-height: 1.6;
}


/* Sidebar nav */
.sidebar {
    position: fixed;
    top: 0; 
    left: 0;
    width: 200px;
    height: calc(100vh - 0px);
    background-color: #333;
    padding: 1.5em 1em;
}

.sidebar ul {
    list-style: none;
}

.sidebar li {
    margin-bottom: 1.2em;
}

.sidebar a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.sidebar a:hover {
    color: #00bcd4;
}

/* Sidebar brand */
.brand {
    margin-bottom: 2em;
    color: #fff;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding-bottom: 1em;
}

.brand h1 {
    font-size: 30px;
    margin-bottom: 0.2em;
}

.brand .username {
    font-size: 17px;
    color: #bbb;
}


/* Main content area */
.container {
    display: flex;
}

main {
    margin-left: 200px;
    margin-top: 0;
    padding: 2em;
    flex: 1;
}

/* Sections */
section {
    background-color: #fff;
    padding: 1.5em;
    margin-bottom: 2em;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
}

/* Typography */
h1 {
    font-size: 24px;
    margin-bottom: 0.5em;
}

h2 {
    font-size: 25px;
    margin-top: 0;
    margin-bottom: 0em;
}

p {
    margin-bottom: 1em;
}

.hidden {
    display: none;
}