.regex-tool-shell { max-width: 1000px; margin: 32px auto 64px; padding: 0 20px; }
.regex-tool-heading { margin-bottom: 24px; }
.regex-tool-eyebrow { color: var(--accent); font: 700 0.72rem/1.5 var(--font-mono); letter-spacing: 0.08em; }
.regex-tool-heading h1 { margin: 6px 0; color: var(--text-main); font-size: clamp(1.8rem, 5vw, 2.5rem); line-height: 1.2; }
.regex-tool-heading > p:not(.regex-tool-eyebrow) { color: var(--text-muted); }
.regex-privacy-note { margin-top: 10px; padding: 10px 12px; border-left: 3px solid var(--accent); background: var(--accent-bg); font-size: 0.85rem; }
.regex-tool-panel, .regex-result-section { min-width: 0; padding: 18px; border: 1px solid var(--border); border-radius: 6px; background: var(--surface); }
.regex-field { display: grid; gap: 7px; color: var(--text-main); font-size: 0.88rem; font-weight: 700; }
.regex-field + .regex-field { margin-top: 18px; }
.regex-field small { color: var(--text-muted); font-weight: 400; }
.regex-pattern-input { display: flex; align-items: center; gap: 8px; padding: 0 12px; border: 1px solid var(--border); border-radius: 4px; background: var(--code-bg); color: var(--text-muted); font-family: var(--font-mono); }
.regex-pattern-input input { min-width: 0; flex: 1; border: 0; outline: 0; background: transparent; color: var(--text-main); font: 0.9rem/1.5 var(--font-mono); padding: 11px 0; }
.regex-pattern-input output { color: var(--accent); font-size: 0.85rem; }
.regex-field textarea, .regex-field > input, #regex-replacement-preview { width: 100%; padding: 11px 12px; border: 1px solid var(--border); border-radius: 4px; background: var(--code-bg); color: var(--text-main); font: 0.88rem/1.6 var(--font-mono); }
.regex-field textarea { resize: vertical; }
.regex-flags { display: flex; flex-wrap: wrap; gap: 8px 16px; margin: 16px 0 0; border: 0; }
.regex-flags legend { margin-bottom: 8px; color: var(--text-main); font-size: 0.82rem; font-weight: 700; }
.regex-flags label { display: inline-flex; align-items: center; gap: 4px; color: var(--text-body); font-size: 0.8rem; }
.regex-flags code, .regex-tool-footer code { color: var(--accent); font-family: var(--font-mono); }
.regex-error { margin-top: 12px; padding: 9px 11px; border: 1px solid #fecaca; border-radius: 4px; background: #fef2f2; color: #b91c1c; font-size: 0.85rem; }
.regex-tool-actions, .regex-result-heading { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.regex-tool-actions { margin-top: 16px; }
.regex-tool-actions button, .regex-result-heading button { padding: 8px 12px; border: 1px solid var(--accent); border-radius: 4px; background: var(--accent); color: #fff; cursor: pointer; font: inherit; font-size: 0.82rem; font-weight: 700; }
.regex-tool-actions .regex-secondary-button, .regex-result-heading .regex-secondary-button { border-color: var(--border); background: var(--surface); color: var(--text-body); }
.regex-tool-actions button:hover, .regex-result-heading button:hover { filter: brightness(0.96); }
#regex-status { color: var(--text-muted); font-size: 0.78rem; }
.regex-results { display: grid; gap: 16px; margin-top: 18px; }
.regex-result-heading { justify-content: space-between; margin-bottom: 10px; }
.regex-result-heading h2 { color: var(--text-main); font-size: 1rem; }
.regex-result-heading > span { color: var(--accent); font: 600 0.75rem/1.4 var(--font-mono); }
.regex-highlight, #regex-replacement-preview { min-height: 100px; overflow: auto; white-space: pre-wrap; overflow-wrap: anywhere; }
.regex-highlight { padding: 12px; border: 1px solid var(--border); border-radius: 4px; background: var(--code-bg); color: var(--text-body); font: 0.84rem/1.7 var(--font-mono); }
.regex-highlight mark { border-radius: 2px; background: #fde68a; color: #713f12; }
.regex-table-wrap { overflow-x: auto; margin-top: 12px; }
.regex-match-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; text-align: left; }
.regex-match-table th, .regex-match-table td { padding: 9px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
.regex-match-table th { color: var(--text-main); font-size: 0.74rem; }
.regex-match-table td:first-child, .regex-match-table td:nth-child(2) { color: var(--text-muted); font-family: var(--font-mono); white-space: nowrap; }
.regex-match-detail > code { color: var(--text-main); font-family: var(--font-mono); overflow-wrap: anywhere; }
.regex-capture-groups { display: flex; flex-wrap: wrap; gap: 5px 10px; margin-top: 5px; color: var(--text-muted); font-family: var(--font-mono); font-size: 0.72rem; }
.regex-empty-state { color: var(--text-muted); text-align: center; }
.regex-tool-footer { margin-top: 16px; color: var(--text-muted); font-size: 0.8rem; }
.regex-tool-footer a { margin-left: 6px; color: var(--accent); font-weight: 700; }
@media (max-width: 640px) {
  .regex-tool-shell { margin-top: 20px; padding-inline: 16px; }
  .regex-tool-panel, .regex-result-section { padding: 13px; }
  .regex-flags { gap: 8px 12px; }
}