body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f5f6fa;
    color: #333;
}
.container { display: flex; }
.sidebar {
    width: 220px;
    background: #1e272e;
    color: white;
    min-height: 100vh;
    padding: 20px;
}
.sidebar h2 { text-align: center; margin-bottom: 20px; }
.sidebar ul { list-style: none; padding: 0; }
.sidebar ul li { margin: 15px 0; }
.sidebar ul li a { color: white; text-decoration: none; font-weight: bold; }
.sidebar ul li a:hover { color: #0be881; }
.content {
    flex: 1; padding: 20px;
    background: white; margin: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0,0,0,.1);
}
table { width: 100%; border-collapse: collapse; margin-top: 15px; }
table th, table td { border: 1px solid #ddd; padding: 8px; }
table th { background: #1e272e; color: white; }
button {
    background: #0be881; border: none;
    padding: 8px 15px; border-radius: 5px;
    cursor: pointer;
}
button:hover { background: #05c46b; }
.login-body {
    display: flex; align-items: center; justify-content: center;
    height: 100vh; background: #1e272e;
}
.login-box {
    background: white; padding: 30px;
    border-radius: 10px; box-shadow: 0 2px 6px rgba(0,0,0,.2);
    text-align: center;
}
.login-box h2 { margin-bottom: 20px; }
.login-box input {
    width: 100%; padding: 10px;
    margin: 8px 0; border: 1px solid #ccc;
    border-radius: 5px;
}
.error { color: red; margin-bottom: 10px; }
.summary-box {
    background: #f9f9f9;
    border: 2px solid #ddd;
    border-radius: 10px;
    padding: 15px 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,.1);
}
.summary-box h3 { margin-top: 0; }
.summary-box p { margin: 5px 0; font-size: 14px; }