body {
      font-family: Arial, sans-serif;
      background: #f4f6f8;
      margin: 0;
      padding: 20px;
    }

    .container {
      max-width: 560px;
      margin: auto;
      background: #fff;
      padding: 22px;
      border-radius: 14px;
      box-shadow: 0 4px 14px rgba(0,0,0,.08);
    }

    h2, h3 {
      margin-top: 0;
      color: #1f2937;
      text-align: center;
    }

    .subjudul {
      text-align: center;
      color: #6b7280;
      margin-top: -8px;
      margin-bottom: 20px;
      font-size: 14px;
    }

    .tabs {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 8px;
      margin-bottom: 20px;
    }

    .tab-btn {
      padding: 11px;
      border: none;
      border-radius: 8px;
      font-weight: bold;
      cursor: pointer;
      background: #e5e7eb;
      color: #374151;
      font-size: 13px;
    }

    .tab-btn.active {
      background: #2563eb;
      color: #fff;
    }

    .section {
      display: none;
    }

    .section.active {
      display: block;
    }

    label {
      font-weight: bold;
      font-size: 14px;
      color: #374151;
    }

    input, textarea, select {
      width: 100%;
      box-sizing: border-box;
      padding: 11px;
      margin-top: 6px;
      margin-bottom: 14px;
      border: 1px solid #d1d5db;
      border-radius: 8px;
      font-size: 15px;
      background: white;
    }

    textarea {
      min-height: 90px;
      resize: vertical;
    }

    button {
      width: 100%;
      padding: 13px;
      border: none;
      border-radius: 8px;
      color: #fff;
      font-size: 16px;
      font-weight: bold;
      cursor: pointer;
      margin-top: 6px;
    }

    button:disabled {
      background: #9ca3af !important;
      cursor: not-allowed;
    }

    .blue { background: #2563eb; }
    .green { background: #16a34a; }
    .purple { background: #7c3aed; }
    .orange { background: #f97316; }
    .wa { background: #22c55e; }

    .loading {
      text-align: center;
      margin-top: 15px;
      color: #4b5563;
    }

    .card {
      margin-top: 18px;
      padding: 16px;
      border-radius: 12px;
      line-height: 1.5;
    }

    .success {
      background: #ecfdf3;
      border: 1px solid #86efac;
      color: #166534;
    }

    .error {
      background: #fef2f2;
      border: 1px solid #fca5a5;
      color: #991b1b;
    }

    .info {
      background: #eff6ff;
      border: 1px solid #93c5fd;
      color: #1e40af;
    }

    .warning {
      background: #fff7ed;
      border: 1px solid #fdba74;
      color: #9a3412;
    }

    .badge {
      display: inline-block;
      padding: 5px 10px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: bold;
      background: #e5e7eb;
      color: #111827;
    }

    .note {
      font-size: 13px;
      color: #6b7280;
      line-height: 1.5;
      margin-bottom: 12px;
    }

    .token {
      font-size: 18px;
      font-weight: bold;
      letter-spacing: 1px;
      background: rgba(255,255,255,.7);
      padding: 8px;
      border-radius: 8px;
      display: inline-block;
      margin-top: 4px;
    }

    hr {
      border: none;
      border-top: 1px solid #e5e7eb;
      margin: 14px 0;
    }

    a {
      color: #2563eb;
      font-weight: bold;
      text-decoration: none;
    }