/* Regex builder */
.rgrid [hidden] { display: none !important; }
.rhead { padding: 64px 0 28px; }
.rhead h1 { max-width: none; }
.rhead .private { margin-top: 10px; font-size: .95rem; }
.rhead .private b { color: var(--green); font-weight: 500; }
@media (max-width: 700px) { .rhead { padding: 44px 0 20px; } }

.rgrid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: 20px; align-items: start; }
@media (max-width: 960px) { .rgrid { grid-template-columns: minmax(0, 1fr); } }
.right { display: flex; flex-direction: column; gap: 20px; min-width: 0; }
.rgrid h2 { margin: 0 0 18px; font-size: 1.1rem; letter-spacing: -.01em; display: flex; align-items: baseline; gap: 10px; }
.rgrid h2 .num { font-family: var(--mono); font-size: .82rem; font-weight: 500; color: var(--cyan); }

/* Presets */
.group + .group { margin-top: 16px; }
.group .lbl { color: var(--muted); font-weight: 400; font-size: .84rem; margin-bottom: 8px; }
.presets { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; }

/* Custom builder */
.custom { margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--line); }
.custom fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
.custom legend { padding: 0; margin-bottom: 10px; }
.checks { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 16px; }
@media (max-width: 480px) { .checks { grid-template-columns: 1fr; } }
.check { display: flex; align-items: center; gap: 9px; font-weight: 400; font-size: .94rem; cursor: pointer; }
.check input { width: 17px; height: 17px; margin: 0; accent-color: var(--green); flex: none; cursor: pointer; }
.check code, .hint code { font-family: var(--mono); font-size: .82em; color: #CFF3FB; }
.extra-l { margin-top: 16px; }
.extra-l .hint { margin-top: 2px; }
#c-extra, .se input { font-family: var(--mono); }
.len { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 16px; }
.len-hint { margin-top: 6px; }
.se { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 16px; }
@media (max-width: 480px) { .se { grid-template-columns: 1fr; } }

/* Mode */
.mode { margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--line); }
.mode > .lbl { margin-bottom: 10px; }
.seg { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
@media (max-width: 480px) { .seg { grid-template-columns: 1fr; } }
.seg label { position: relative; display: block; cursor: pointer; font-weight: 400; }
.seg input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.seg span { display: block; height: 100%; padding: 12px 14px; border-radius: 8px; border: 1px solid var(--line); background: var(--bg); transition: border-color .2s, background .2s; }
.seg b { display: block; font-weight: 500; font-size: .94rem; }
.seg small { display: block; margin-top: 2px; color: var(--muted); font-size: .84rem; line-height: 1.4; }
.seg label:hover span { border-color: rgba(91,207,230,.5); }
.seg input:checked + span { border-color: var(--cyan); background: rgba(91,207,230,.10); }
.seg input:focus-visible + span { outline: 2px solid var(--green); outline-offset: 2px; }

/* Output */
.rx { display: flex; align-items: center; gap: 2px; padding: 0 12px; border-radius: 8px; border: 1px solid var(--line); background: #0F161E; font-family: var(--mono); color: var(--muted); transition: border-color .2s, box-shadow .2s; }
.rx:focus-within { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(91,207,230,.18); }
.rx input[type="text"] { flex: 1; min-width: 0; margin: 0; padding: 12px 4px; border: 0; background: none; box-shadow: none; color: #CFF3FB; font-family: var(--mono); font-size: .95rem; }
.rx input[type="text"]:focus { box-shadow: none; }
.rx b { font-weight: 500; color: var(--cyan); }
.rx-err { margin-top: 10px; padding: 10px 12px; border-radius: 8px; border: 1px solid rgba(247,200,115,.55); background: rgba(247,200,115,.08); color: #FBDDA6; font-size: .9rem; }
.copies { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 14px; }
.copies .edited { margin: 0; }
.explain-list { margin: 18px 0 0; padding: 14px 16px 14px 34px; border-radius: 8px; background: rgba(255,255,255,.02); border: 1px solid var(--line); color: var(--muted); font-size: .92rem; }
.explain-list li + li { margin-top: 4px; }

/* Tester: a transparent textarea over a backdrop that draws the highlights */
.test-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.test-head h2 { margin: 0; }
.count { font-family: var(--mono); font-size: .82rem; color: var(--muted); padding: 4px 10px; border-radius: 6px; border: 1px solid var(--line); }
.count:empty { display: none; }
.count.ok { color: var(--green); border-color: rgba(74,222,128,.45); }
.count.none { color: #FBDDA6; border-color: rgba(247,200,115,.55); }
.hl { position: relative; border-radius: 8px; background: #0F161E; }
.hl-back, .hl textarea {
  margin: 0; padding: 14px 16px; border: 1px solid transparent; border-radius: 8px;
  font-family: var(--mono); font-size: .9rem; line-height: 1.7; letter-spacing: 0; tab-size: 4;
  white-space: pre-wrap; overflow-wrap: anywhere; word-break: normal; scrollbar-gutter: stable;
}
.hl-back { position: absolute; inset: 0; overflow: hidden; color: transparent; pointer-events: none; }
.hl-back mark { color: transparent; border-radius: 3px; }
.hl-back mark.a { background: rgba(74,222,128,.30); }
.hl-back mark.b { background: rgba(91,207,230,.30); }
.hl textarea { position: relative; display: block; width: 100%; height: 240px; min-height: 140px; resize: vertical; overflow: auto; background: transparent; color: var(--text); caret-color: var(--green); border-color: var(--line); }
.hl textarea:focus { outline: none; border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(91,207,230,.18); }
.hl textarea::placeholder { color: #6F7E8C; }
.test-hint { margin-top: 10px; }
.matches { list-style: none; margin: 14px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; max-height: 150px; overflow-y: auto; }
.matches code { display: inline-block; font-family: var(--mono); font-size: .8rem; color: #CFF3FB; padding: 3px 8px; border-radius: 6px; background: rgba(74,222,128,.08); border: 1px solid rgba(74,222,128,.3); word-break: break-all; }