body {
    background-color: #121212;
    color: #f0f0f0;
    font-family: 'Segoe UI', Tahoma, sans-serif;
    margin: 0;
    padding: 0;
}
header {
    background: #1e1e1e;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #333;
}
header img {
    height: 40px;
}
header h1 {
    font-size: 20px;
    margin-left: 15px;
}
.container {
    padding: 20px;
}
.form-card {
    background: #1e1e1e;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 0 10px #000;
    max-width: 500px;
}
form input[type="text"] {
    padding: 10px;
    width: calc(100% - 110px);
    border: none;
    margin-right: 10px;
    border-radius: 5px;
}
form button {
    padding: 10px 20px;
    background-color: #2e7d32;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}
form button:hover {
    background-color: #388e3c;
}
table {
    width: 100%;
    border-collapse: collapse;
}
th, td {
    padding: 10px 15px;
    border-bottom: 1px solid #333;
}
th {
    background-color: #1e1e1e;
}
tr:nth-child(even) {
    background-color: #1a1a1a;
}
.green { color: lightgreen; }
.yellow { color: goldenrod; }
.red { color: red; }
.gray { color: gray; }
a.delete {
    color: #ff5c5c;
    text-decoration: none;
    font-weight: bold;
}