body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: #f3f4f6;
    color: #111827;
}
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}
.topbar {
    background: #111827;
    color: white;
    padding: 18px 0;
}
.brand {
    color: white;
    text-decoration: none;
    font-weight: 700;
    font-size: 20px;
    margin-right: 15px;
}
.subtitle { color: #9ca3af; }
.content { padding-top: 32px; }
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}
.card {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    padding: 20px;
}
table {
    width: 100%;
    border-collapse: collapse;
}
th, td {
    padding: 12px 10px;
    border-bottom: 1px solid #e5e7eb;
    text-align: left;
}
.button {
    background: #111827;
    color: white;
    border: 0;
    border-radius: 6px;
    padding: 10px 14px;
    text-decoration: none;
    cursor: pointer;
}
.danger { background: #991b1b; }
.form-card {
    max-width: 700px;
    display: grid;
    gap: 10px;
}
input, textarea, select {
    width: 100%;
    box-sizing: border-box;
    padding: 10px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
}
.form-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 8px;
}
.validation, .alert {
    color: #991b1b;
    margin-bottom: 12px;
}