body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #e6e6e6;
}

/* Container */
.container {
    width: 1100px;
    margin: auto;
}

/* Top Bar */
#topbar {
    background: #4b5a7a;
    color: white;
    padding: 15px 0;
}

.logo {
    float: left;
    font-size: 22px;
    font-weight: bold;
}

.welcome {
    float: right;
    font-size: 14px;
    margin-top: 5px;
}

#topbar::after {
    content: "";
    display: block;
    clear: both;
}

/* Navigation */
#navbar {
    background: #d9d9d9;
    padding: 8px 0;
    border-bottom: 1px solid #bbb;
}

#navbar a {
    text-decoration: none;
    color: #000;
    margin-right: 15px;
    font-size: 14px;
}

#navbar a:hover {
    text-decoration: underline;
}

/* Main Layout */
.main {
    display: flex;
    margin-top: 20px;
}

/* Content */
.content {
    width: 75%;
}

/* Sidebar */
.sidebar {
    width: 25%;
    padding-left: 20px;
}

/* Boxes */
.box {
    background: white;
    border: 1px solid #ccc;
    padding: 15px;
    margin-bottom: 20px;
}

.box h3 {
    margin-top: 0;
    font-size: 16px;
}

/* Textarea */
textarea {
    width: 100%;
    height: 150px;
}

/* Buttons */
button {
    padding: 6px 12px;
    background: #4b5a7a;
    color: white;
    border: none;
    cursor: pointer;
    font-size: 13px;
}

button:hover {
    background: #2f3a52;
}

/* User Menu */
.userbox {
    background: white;
    border: 1px solid #aaa;
}

.userbox h4 {
    background: #4b5a7a;
    color: white;
    margin: 0;
    padding: 10px;
    font-size: 14px;
}

.userbox a {
    display: block;
    padding: 8px 10px;
    text-decoration: none;
    color: black;
    border-bottom: 1px solid #eee;
    font-size: 13px;
}

.userbox a:hover {
    background: #f2f2f2;
}