* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #111827;
    color: #f3f4f6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
}

h1 {
    margin-bottom: 5px;
}

.subtitle {
    color: #9ca3af;
    margin-bottom: 30px;
}

form {
    background: #1f2937;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 30px;
}

label {
    display: block;
    margin-top: 15px;
    margin-bottom: 5px;
}

input,
select,
textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #374151;
    border-radius: 6px;
    background: #111827;
    color: white;
}

textarea {
    min-height: 100px;
}

button {
    margin-top: 15px;
    padding: 10px 16px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

.topic-card {
    background: #1f2937;
    padding: 18px;
    border-radius: 10px;
    margin-bottom: 15px;
}

.topic-card h3 {
    margin-top: 0;
}

.topic-card p {
    color: #d1d5db;
}

.status {
    font-weight: bold;
}

.topic-card button {
    margin-right: 10px;
}