* { box-sizing: border-box; }
body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    background: #f4f5f7;
    color: #1f2430;
    margin: 0;
    padding: 0;
}
header {
    background: #1f2937;
    color: #fff;
    padding: 14px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
header a {
    color: #fff;
    text-decoration: none;
    margin-left: 16px;
    font-size: 14px;
    opacity: 0.9;
}
header a:hover { opacity: 1; text-decoration: underline; }
main {
    max-width: 900px;
    margin: 24px auto;
    padding: 0 16px;
}
h1 { font-size: 20px; }
.card {
    background: #fff;
    border-radius: 10px;
    padding: 16px 20px;
    margin-bottom: 16px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid #eee; }
th { color: #666; font-weight: 600; }
.kategori-title {
    margin-top: 24px;
    font-size: 15px;
    font-weight: 700;
    color: #374151;
    border-bottom: 2px solid #e5e7eb;
    padding-bottom: 4px;
}
.btn {
    display: inline-block;
    background: #2563eb;
    color: #fff;
    padding: 6px 14px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 13px;
    border: none;
    cursor: pointer;
}
.btn:hover { background: #1d4ed8; }
.btn-secondary { background: #6b7280; }
.btn-secondary:hover { background: #4b5563; }
input[type=text], input[type=password] {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 14px;
    margin-top: 4px;
}
label { font-size: 13px; color: #374151; font-weight: 600; }
.field { margin-bottom: 14px; }
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
}
.badge-queued  { background: #fef3c7; color: #92400e; }
.badge-sent    { background: #dbeafe; color: #1e40af; }
.badge-sukses  { background: #d1fae5; color: #065f46; }
.badge-gagal   { background: #fee2e2; color: #991b1b; }
.badge-failed  { background: #fee2e2; color: #991b1b; }
.badge-perlu_dicek { background: #e5e7eb; color: #374151; }
.alert {
    padding: 10px 14px;
    border-radius: 8px;
    margin-bottom: 14px;
    font-size: 14px;
}
.alert-error { background: #fee2e2; color: #991b1b; }
.alert-success { background: #d1fae5; color: #065f46; }
.search-box { margin-bottom: 12px; }