body {
    font-family: Arial, sans-serif;
    background: #f4f6f8;
    margin: 0;
}

.topbar {
    background: #1e293b;
    padding: 12px;
}

.topbar a {
    color: #fff;
    margin-right: 20px;
    text-decoration: none;
    font-weight: bold;
}

.form-card, .card {
    background: #fff;
    max-width: 600px;
    margin: 40px auto;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 0 15px rgba(0,0,0,0.1);
}

input, textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
}

textarea {
    height: 90px;
}

button {
    background: #2563eb;
    color: #fff;
    border: none;
    padding: 12px;
    cursor: pointer;
    border-radius: 4px;
}

button:hover {
    background: #1d4ed8;
}

.center {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.error {
    color: red;
}