body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #f3f4f6;
}

.sidebar {
    width: 240px;
    background: #111827;
    color: white;
    padding: 20px;
    height: 100vh;
    position: fixed;
}

.sidebar h2 {
    margin-top: 0;
}

.sidebar button {
    width: 100%;
    padding: 12px;
    margin-bottom: 10px;
    background: #1f2937;
    border: none;
    color: white;
    cursor: pointer;
    border-radius: 6px;
}

.sidebar button:hover {
    background: #374151;
}

.content {
    margin-left: 260px;
    padding: 30px;
}

.card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.primary {
    background: #2563eb;
    color: white;
    border: none;
    padding: 10px 14px;
    border-radius: 6px;
    cursor: pointer;
}

.secondary {
    background: #e5e7eb;
    border: none;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
}

input, select {
    width: 100%;
    padding: 8px;
    margin-bottom: 10px;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 10px;
    border-bottom: 1px solid #eee;
}

th {
    background: #f9fafb;
    text-align: left;
}