.regex-tester{display:flex;flex-direction:column;gap:1.5rem}.pattern-section label,.test-section label,.results-section label{display:block;font-weight:500;margin-bottom:.5rem;color:var(--text-primary, #333)}.pattern-input{display:flex;align-items:center;background:#fff;border:1px solid var(--border-color, #ddd);border-radius:8px;overflow:hidden}.pattern-prefix,.pattern-suffix{padding:.75rem;background:var(--bg-secondary, #f5f5f5);color:var(--text-secondary, #666);font-family:SF Mono,Monaco,monospace}.pattern-input input{flex:1;padding:.75rem;border:none;font-family:SF Mono,Monaco,monospace;font-size:1rem}.pattern-input input:focus{outline:none}.flags{display:flex;flex-wrap:wrap;gap:1rem;margin-top:.75rem}.flags label{display:flex;align-items:center;gap:.25rem;font-size:.875rem;color:var(--text-secondary, #666);cursor:pointer}.flags label.active{color:var(--primary, #4361ee)}.flags label span{font-family:SF Mono,Monaco,monospace;font-weight:600}.flags input[type=checkbox]{display:none}.common-patterns label{display:block;font-size:.875rem;color:var(--text-secondary, #666);margin-bottom:.5rem}.pattern-chips{display:flex;flex-wrap:wrap;gap:.5rem}.pattern-chips button{padding:.375rem .75rem;background:var(--bg-secondary, #f5f5f5);border:1px solid var(--border-color, #ddd);border-radius:16px;font-size:.8125rem;cursor:pointer;transition:all .2s}.pattern-chips button:hover{background:var(--primary, #4361ee);color:#fff;border-color:var(--primary, #4361ee)}.test-section textarea{width:100%;padding:.75rem;border:1px solid var(--border-color, #ddd);border-radius:8px;font-family:SF Mono,Monaco,monospace;font-size:.875rem;resize:vertical}.result-header{display:flex;justify-content:space-between;align-items:center}.match-count{font-size:.875rem;color:var(--text-secondary, #666)}.highlighted-text{padding:1rem;background:var(--bg-secondary, #f5f5f5);border-radius:8px;font-family:SF Mono,Monaco,monospace;font-size:.875rem;line-height:1.6;white-space:pre-wrap;word-break:break-word}.highlighted-text mark{background:#ffc80080;padding:.1rem .2rem;border-radius:2px}.match-list{display:flex;flex-direction:column;gap:.5rem;margin-top:1rem}.match-item{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;padding:.5rem;background:#fff;border:1px solid var(--border-color, #ddd);border-radius:6px;font-size:.8125rem}.match-index{font-weight:600;color:var(--primary, #4361ee)}.match-text{font-family:SF Mono,Monaco,monospace;background:#ffc8004d;padding:.125rem .375rem;border-radius:4px}.match-position{color:var(--text-secondary, #666)}.match-groups{font-size:.75rem;color:var(--text-secondary, #666);font-family:SF Mono,Monaco,monospace}.error-message{margin-top:.5rem;padding:.5rem;background:#ef44441a;color:var(--error, #ef4444);border-radius:6px;font-size:.875rem}.privacy-note{text-align:center;padding:.75rem;background:#4caf501a;color:var(--success, #4caf50);border-radius:8px;font-size:.875rem;margin-top:1rem}@media(max-width:640px){.flags{flex-direction:column;gap:.5rem}}