body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background: #f8f9fa;
        }
        .container {
            max-width: 1200px;
            background: white;
            margin: 40px auto;
            padding: 0;
            box-shadow: 0 0 20px rgba(0,0,0,0.1);
            border-radius: 8px;
            overflow: hidden;
        }
        .header {
            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            color: white;
            padding: 60px 40px;
            text-align: center;
        }
        .header h1 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .header p {
            font-size: 1.1rem;
            opacity: 0.9;
        }
        .content {
            padding: 40px;
        }
        .method-tabs {
            margin: 30px 0;
        }
        .method-card {
            background: #f8f9fa;
            border-left: 4px solid #f5576c;
            padding: 25px;
            margin: 25px 0;
            border-radius: 8px;
        }
        .method-card h3 {
            color: #f5576c;
            margin-bottom: 20px;
            font-weight: 600;
        }
        .step-number {
            display: inline-block;
            background: #f5576c;
            color: white;
            width: 30px;
            height: 30px;
            line-height: 30px;
            text-align: center;
            border-radius: 50%;
            margin-right: 10px;
            font-weight: 700;
            font-size: 0.9rem;
        }
        .permission-calculator {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 30px;
            border-radius: 8px;
            margin: 30px 0;
        }
        .permission-calculator h4 {
            margin-bottom: 20px;
        }
        .checkbox-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin: 20px 0;
        }
        .permission-group {
            background: rgba(255,255,255,0.1);
            padding: 15px;
            border-radius: 6px;
        }
        .permission-group h5 {
            font-size: 1rem;
            margin-bottom: 10px;
            opacity: 0.9;
        }
        .permission-checkbox {
            margin: 8px 0;
        }
        .permission-result {
            background: rgba(255,255,255,0.2);
            padding: 20px;
            border-radius: 6px;
            text-align: center;
            font-size: 2rem;
            font-weight: 700;
            margin-top: 20px;
        }
        .code-block {
            background: #2d2d2d;
            color: #f8f8f2;
            padding: 20px;
            border-radius: 8px;
            overflow-x: auto;
            margin: 20px 0;
            font-family: 'Courier New', monospace;
        }
        .code-block code {
            color: #f8f8f2;
        }
        .inline-code {
            background: #f4f4f4;
            padding: 3px 8px;
            border-radius: 4px;
            color: #e83e8c;
            font-family: 'Courier New', monospace;
            font-size: 0.9em;
        }
        .info-box {
            background: #e7f3ff;
            border-left: 4px solid #2196F3;
            padding: 20px;
            margin: 20px 0;
            border-radius: 4px;
        }
        .warning-box {
            background: #fff3cd;
            border-left: 4px solid #ffc107;
            padding: 20px;
            margin: 20px 0;
            border-radius: 4px;
        }
        .success-box {
            background: #d4edda;
            border-left: 4px solid #28a745;
            padding: 20px;
            margin: 20px 0;
            border-radius: 4px;
        }
        .danger-box {
            background: #f8d7da;
            border-left: 4px solid #dc3545;
            padding: 20px;
            margin: 20px 0;
            border-radius: 4px;
        }
        .permission-table {
            width: 100%;
            margin: 20px 0;
        }
        .permission-table th {
            background: #f093fb;
            color: white;
            padding: 12px;
        }
        .permission-table td {
            padding: 12px;
            border-bottom: 1px solid #dee2e6;
        }
        .permission-table tr:hover {
            background: #f8f9fa;
        }
        .visual-guide {
            background: #f8f9fa;
            border: 2px solid #dee2e6;
            border-radius: 8px;
            padding: 20px;
            margin: 20px 0;
            font-family: 'Courier New', monospace;
        }
        .quick-reference {
            background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
            color: #333;
            padding: 30px;
            border-radius: 8px;
            margin: 30px 0;
            font-family: 'Courier New', monospace;
        }
        .quick-reference h4 {
            text-align: center;
            margin-bottom: 20px;
            font-weight: 700;
        }
        .section-header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 20px 30px;
            margin: 40px -40px 30px -40px;
            font-weight: 600;
            font-size: 1.5rem;
        }
        .toc {
            background: #f8f9fa;
            border: 1px solid #dee2e6;
            border-radius: 8px;
            padding: 25px;
            margin-bottom: 30px;
        }
        .toc h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 15px;
            color: #667eea;
        }
        .toc ul {
            list-style: none;
            padding-left: 0;
        }
        .toc li {
            padding: 8px 0;
        }
        .toc a {
            color: #495057;
            text-decoration: none;
            transition: color 0.2s;
        }
        .toc a:hover {
            color: #f5576c;
        }
        .footer {
            background: #2d3748;
            color: white;
            padding: 30px 40px;
            margin-top: 40px;
        }
        .screenshot-placeholder {
            background: #e9ecef;
            border: 2px dashed #adb5bd;
            padding: 40px;
            text-align: center;
            border-radius: 8px;
            margin: 20px 0;
            color: #6c757d;
        }
        .btn-copy {
            background: #f5576c;
            color: white;
            border: none;
            padding: 5px 15px;
            border-radius: 4px;
            cursor: pointer;
            float: right;
            margin-top: -10px;
        }
        .btn-copy:hover {
            background: #d94560;
        }
        @media print {
            .header, .footer {
                display: none;
            }
        }
		button {
  border: none;              /* remove border */
  padding: 12px 24px;        /* make button bigger */
  font-size: 1rem;           /* bigger text */
  border-radius: 6px;        /* optional: slightly rounded corners */
}

/* keep your existing color classes */
.red-btn {
  background-color: red;
}

.blue-btn {
  background-color: blue;
}
.salmon-btn {
  background-color: salmon;
}

button a {
  text-decoration: none;
  color: white;
}