* { box-sizing: border-box; }
body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #f2f5f7;
    margin: 0;
    color: #1f2937;
}
.container {
    max-width: 960px;
    margin: 30px auto;
    padding: 0 16px;
}
h1 {
    font-size: 22px;
    margin-bottom: 4px;
}
.subtitle {
    color: #6b7280;
    margin-bottom: 20px;
    font-size: 14px;
}
.card {
    background: #fff;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.08);
    margin-bottom: 20px;
}
.btn {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 14px;
    border: none;
    cursor: pointer;
}
.btn-primary { background: #2563eb; color: #fff; }
.btn-primary:hover { background: #1d4ed8; }
.btn-edit { background: #f59e0b; color: #fff; }
.btn-edit:hover { background: #d97706; }
.btn-delete { background: #dc2626; color: #fff; }
.btn-delete:hover { background: #b91c1c; }
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
th, td {
    padding: 10px 12px;
    border-bottom: 1px solid #e5e7eb;
    text-align: left;
}
th { background: #f9fafb; font-weight: 600; }
.badge {
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}
.badge-active { background: #dcfce7; color: #16a34a; }
.badge-expired { background: #fee2e2; color: #dc2626; }
.actions a, .actions button { margin-right: 6px; }
form label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    font-weight: 600;
}
form input, form select {
    width: 100%;
    padding: 9px 10px;
    margin-bottom: 16px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 14px;
}
.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}
.alert {
    padding: 10px 14px;
    background: #dcfce7;
    color: #16a34a;
    border-radius: 6px;
    margin-bottom: 16px;
    font-size: 14px;
}
.back-link {
    display: inline-block;
    margin-bottom: 14px;
    color: #2563eb;
    text-decoration: none;
    font-size: 14px;
}