.duf-container { margin: 20px 0; padding: 15px; background: #fff; border: 1px solid #ccd0d4; box-shadow: 0 1px 1px rgba(0,0,0,.04); }
.duf-tabs { display: flex; border-bottom: 2px solid #2271b1; margin: 20px 0; background: #f6f7f7; }
.duf-tab { padding: 12px 24px; cursor: pointer; background: transparent; border: none; border-bottom: 3px solid transparent; margin-right: 2px; font-size: 14px; font-weight: 500; color: #50575e; transition: all 0.2s; }
.duf-tab:hover { background: #fff; color: #2271b1; }
.duf-tab.active { background: #fff; border-bottom-color: #2271b1; color: #2271b1; font-weight: 600; }
.duf-tab-content { display: none; padding: 20px 0; }
.duf-tab-content.active { display: block; }
.duf-stats { background: #fff; padding: 20px; border: 1px solid #ccd0d4; box-shadow: 0 1px 1px rgba(0,0,0,.04); margin: 20px 0; border-left: 4px solid #2271b1; }
.duf-stats h3 { margin-top: 0; margin-bottom: 15px; font-size: 18px; color: #1d2327; }
.duf-stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 15px; margin-top: 15px; }
.duf-stat-box { background: linear-gradient(135deg, #f6f7f7 0%, #ffffff 100%); padding: 20px; border-radius: 6px; border: 1px solid #dcdcde; text-align: center; }
.duf-stat-box strong { display: block; font-size: 32px; color: #2271b1; margin-bottom: 8px; font-weight: 700; }
.duf-stat-box span { display: block; font-size: 13px; color: #646970; text-transform: uppercase; letter-spacing: 0.5px; }
.duf-table-wrapper { overflow-x: auto; margin: 20px 0; background: #fff; border: 1px solid #ccd0d4; box-shadow: 0 1px 1px rgba(0,0,0,.04); }
.duf-table { width: 100%; border-collapse: collapse; margin: 0; }
.duf-table th, .duf-table td { padding: 12px 15px; text-align: left; border-bottom: 1px solid #dcdcde; }
.duf-table th { background: #f6f7f7; font-weight: 600; color: #1d2327; font-size: 13px; text-transform: uppercase; letter-spacing: 0.5px; }
.duf-table tr:hover { background: #f6f7f7; }
.duf-table tr.duf-has-data { background: #fff8e5; }
.duf-table tr.duf-has-data:hover { background: #fff3cd; }
.duf-email-bad { color: #d63638; font-weight: 600; }
.duf-reason { font-size: 12px; color: #646970; }
.duf-actions { margin: 20px 0; padding: 15px; background: #f6f7f7; border-radius: 6px; display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.duf-btn { background: #2271b1; color: #fff; padding: 10px 20px; border: none; border-radius: 4px; cursor: pointer; font-size: 14px; font-weight: 500; transition: all 0.2s; }
.duf-btn:hover { background: #135e96; transform: translateY(-1px); box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
.duf-btn-danger { background: #d63638; }
.duf-btn-danger:hover { background: #b32d2e; }
.duf-btn-secondary { background: #646970; }
.duf-btn-secondary:hover { background: #50575e; }
.duf-btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.duf-domain-row { display: flex; justify-content: space-between; align-items: center; padding: 15px; border-bottom: 1px solid #dcdcde; background: #fff; }
.duf-domain-row:hover { background: #f6f7f7; }
.duf-domain-info { flex: 1; }
.duf-domain-name { font-weight: 600; color: #2271b1; font-size: 16px; margin-bottom: 5px; }
.duf-domain-count { color: #646970; font-size: 14px; }
.duf-min-users-input { padding: 8px 12px; width: 100px; margin: 0 10px; border: 1px solid #8c8f94; border-radius: 4px; }
.duf-notice { padding: 12px 15px; margin: 15px 0; border-left: 4px solid; border-radius: 4px; }
.duf-notice-info { background: #e5f5fa; border-color: #00a0d2; color: #0073aa; }
.duf-notice-warning { background: #fff8e5; border-color: #f0b849; color: #8b6914; }
.duf-badge { display: inline-block; padding: 4px 8px; border-radius: 3px; font-size: 11px; font-weight: 600; }
.duf-badge-warning { background: #fff3cd; color: #856404; }
.duf-page-header { background: #fff; padding: 20px; margin: -20px -20px 20px -20px; border-bottom: 1px solid #ccd0d4; }
.duf-page-header h1 { margin: 0 0 10px 0; font-size: 23px; font-weight: 400; }
.duf-page-header p { margin: 0; color: #646970; }