.rgx-wrapper{--rgx-bg-primary:#0a0f1e;--rgx-bg-secondary:#111827;--rgx-bg-card:#1a2236;--rgx-bg-input:#0d1424;--rgx-border:#2a3a5c;--rgx-border-focus:#3b82f6;--rgx-text-primary:#e2e8f0;--rgx-text-secondary:#94a3b8;--rgx-text-muted:#64748b;--rgx-accent-blue:#3b82f6;--rgx-accent-cyan:#22d3ee;--rgx-accent-green:#10b981;--rgx-accent-amber:#f59e0b;--rgx-accent-red:#ef4444;--rgx-font-mono:'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'SF Mono', 'Consolas', monospace;--rgx-font-sans:'Segoe UI', system-ui, -apple-system, sans-serif;--rgx-radius:8px;font-family:var(--rgx-font-sans);color:var(--rgx-text-primary);background:var(--rgx-bg-primary);line-height:1.6;max-width:900px;margin:0 auto;padding:2rem 1rem}.rgx-wrapper *,.rgx-wrapper *::before,.rgx-wrapper *::after{box-sizing:border-box}.rgx-header{text-align:center;margin-bottom:1.5rem}.rgx-title{font-size:1.8rem;font-weight:700;margin:0 0 .5rem}.rgx-subtitle{color:var(--rgx-text-secondary);font-size:.95rem;max-width:640px;margin:0 auto}.rgx-panel{background:var(--rgx-bg-card);border:1px solid var(--rgx-border);border-radius:var(--rgx-radius);padding:1.25rem;margin-bottom:1.25rem}.rgx-panel-header{display:flex;align-items:center;justify-content:space-between;gap:.75rem;margin-bottom:.75rem;flex-wrap:wrap}.rgx-panel-header--sub{margin-top:1rem}.rgx-panel-header-right{display:flex;gap:.5rem}.rgx-label{font-size:.8rem;font-weight:600;color:var(--rgx-text-secondary);text-transform:uppercase;letter-spacing:.05em}.rgx-pattern-group label{display:block;font-size:.8rem;font-weight:600;color:var(--rgx-text-secondary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.4rem}.rgx-pattern-input-wrap{display:flex;align-items:stretch;background:var(--rgx-bg-input);border:1px solid var(--rgx-border);border-radius:6px;overflow:hidden}.rgx-pattern-input-wrap:focus-within{border-color:var(--rgx-border-focus)}.rgx-slash{display:flex;align-items:center;padding:0 .5rem;color:var(--rgx-text-muted);font-family:var(--rgx-font-mono);font-size:1.1rem;user-select:none}.rgx-pattern-input,.rgx-flags-input{background:#fff0;border:none;outline:none;color:var(--rgx-text-primary);font-family:var(--rgx-font-mono);font-size:.95rem;padding:.65rem .25rem}.rgx-pattern-input-wrap .rgx-pattern-input{flex:1;min-width:0;width:auto}.rgx-pattern-input-wrap .rgx-flags-input{width:4.5rem;flex:none;border-left:1px solid var(--rgx-border)}.rgx-flags-toggles{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.75rem}.rgx-flag-chip{display:flex;align-items:center;gap:.35rem;background:var(--rgx-bg-input);border:1px solid var(--rgx-border);border-radius:999px;padding:.3rem .75rem;font-family:var(--rgx-font-mono);font-size:.8rem;color:var(--rgx-text-secondary);cursor:pointer;user-select:none}.rgx-flag-chip input{accent-color:var(--rgx-accent-blue);cursor:pointer}.rgx-flag-chip span{color:var(--rgx-text-muted);font-family:var(--rgx-font-sans);font-size:.72rem}.rgx-status-bar{display:flex;align-items:center;gap:.5rem;margin-top:.75rem;font-size:.85rem;color:var(--rgx-text-secondary)}.rgx-valid-dot{width:9px;height:9px;border-radius:50%;flex-shrink:0}.rgx-valid-dot--neutral{background:var(--rgx-text-muted)}.rgx-valid-dot--valid{background:var(--rgx-accent-green)}.rgx-valid-dot--invalid{background:var(--rgx-accent-red)}.rgx-error-msg{color:var(--rgx-accent-red);font-size:.85rem;margin-top:.75rem;display:none;font-family:var(--rgx-font-mono);word-break:break-word}.rgx-error-msg.rgx-visible{display:block}.rgx-textarea{width:100%;min-height:140px;padding:.75rem;background:var(--rgx-bg-input);border:1px solid var(--rgx-border);border-radius:6px;color:var(--rgx-text-primary);font-family:var(--rgx-font-mono);font-size:.9rem;resize:vertical;outline:none;transition:border-color 0.2s}.rgx-textarea:focus{border-color:var(--rgx-border-focus)}.rgx-replace-input{width:100%;padding:.65rem .85rem;background:var(--rgx-bg-input);border:1px solid var(--rgx-border);border-radius:6px;color:var(--rgx-text-primary);font-family:var(--rgx-font-mono);font-size:.9rem;outline:none}.rgx-replace-input:focus{border-color:var(--rgx-border-focus)}.rgx-btn{padding:.5rem 1rem;background:var(--rgx-accent-blue);color:#fff;border:none;border-radius:6px;font-size:.85rem;font-weight:600;cursor:pointer;transition:background 0.2s,transform 0.1s;white-space:nowrap;font-family:inherit;min-height:36px}.rgx-btn:hover{background:#2563eb}.rgx-btn:active{transform:scale(.97)}.rgx-btn--ghost{background:#fff0;border:1px solid var(--rgx-border);color:var(--rgx-text-secondary)}.rgx-btn--ghost:hover{background:var(--rgx-bg-secondary);color:var(--rgx-text-primary)}.rgx-highlight-output{background:var(--rgx-bg-input);border:1px solid var(--rgx-border);border-radius:6px;padding:.85rem;font-family:var(--rgx-font-mono);font-size:.9rem;white-space:pre-wrap;word-break:break-word;min-height:80px;max-height:320px;overflow-y:auto}.rgx-placeholder{color:var(--rgx-text-muted)}.rgx-mark{background:rgb(59 130 246 / .35);border:1px solid var(--rgx-accent-blue);border-radius:3px;padding:0 1px}.rgx-mark--alt{background:rgb(34 211 238 / .3);border-color:var(--rgx-accent-cyan)}.rgx-match-count{font-size:.8rem;color:var(--rgx-text-secondary);font-family:var(--rgx-font-mono)}.rgx-match-list{display:flex;flex-direction:column;gap:.6rem;max-height:320px;overflow-y:auto}.rgx-empty-note{color:var(--rgx-text-muted);font-size:.85rem;margin:0}.rgx-match-card{background:var(--rgx-bg-input);border:1px solid var(--rgx-border);border-radius:6px;padding:.6rem .75rem}.rgx-match-card-head{display:flex;justify-content:space-between;gap:.5rem;font-size:.75rem;color:var(--rgx-text-muted);margin-bottom:.3rem;font-family:var(--rgx-font-mono)}.rgx-match-card-value{font-family:var(--rgx-font-mono);font-size:.9rem;word-break:break-all;color:var(--rgx-accent-cyan)}.rgx-match-groups{margin-top:.4rem;font-size:.8rem;color:var(--rgx-text-secondary);font-family:var(--rgx-font-mono);word-break:break-all}.rgx-match-groups span{display:block}.rgx-cheatsheet-toggle{width:100%;display:flex;align-items:center;justify-content:space-between;background:#fff0;border:none;color:var(--rgx-text-primary);font-family:inherit;font-size:.95rem;font-weight:600;cursor:pointer;padding:0}.rgx-chevron{transition:transform 0.2s;color:var(--rgx-text-secondary)}.rgx-chevron.rgx-rotated{transform:rotate(180deg)}.rgx-cheatsheet{display:none;grid-template-columns:repeat(2,1fr);gap:.6rem;margin-top:1rem}.rgx-cheatsheet.rgx-open{display:grid}.rgx-cheat-item{background:var(--rgx-bg-input);border:1px solid var(--rgx-border);border-radius:6px;padding:.6rem .75rem;cursor:pointer;transition:border-color 0.2s,background 0.2s}.rgx-cheat-item:hover{border-color:var(--rgx-border-focus);background:var(--rgx-bg-secondary)}.rgx-cheat-name{display:block;font-size:.8rem;font-weight:600;color:var(--rgx-text-primary);margin-bottom:.25rem}.rgx-cheat-pattern{font-family:var(--rgx-font-mono);font-size:.78rem;color:var(--rgx-accent-amber);word-break:break-all}.rgx-toast{position:fixed;bottom:2rem;left:50%;transform:translateX(-50%) translateY(100px);background:var(--rgx-accent-green);color:#fff;padding:.6rem 1.2rem;border-radius:6px;font-size:.85rem;font-weight:600;opacity:0;transition:transform 0.3s,opacity 0.3s;z-index:10000;pointer-events:none}.rgx-toast.rgx-show{transform:translateX(-50%) translateY(0);opacity:1}.rgx-footer{text-align:center;font-size:.8rem;color:var(--rgx-text-muted);margin-top:1.5rem}.rgx-footer a{color:var(--rgx-accent-blue);text-decoration:none}.rgx-footer a:hover{text-decoration:underline}@media (max-width:640px){.rgx-wrapper{padding:1rem .75rem}.rgx-title{font-size:1.4rem}.rgx-pattern-input-wrap{flex-wrap:wrap}.rgx-pattern-input-wrap .rgx-flags-input{border-left:none;border-top:1px solid var(--rgx-border);width:100%}.rgx-panel-header{flex-direction:column;align-items:flex-start}.rgx-panel-header-right{width:100%}.rgx-panel-header-right .rgx-btn{flex:1}.rgx-cheatsheet{grid-template-columns:1fr}.rgx-btn{min-height:44px}}