/* Regex · estilos propios */
:root { --m0: rgba(240, 160, 30, .32); --m1: rgba(47, 91, 234, .22); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --m0: rgba(242, 184, 46, .3); --m1: rgba(124, 156, 255, .3); } }
:root[data-theme="dark"] { --m0: rgba(242, 184, 46, .3); --m1: rgba(124, 156, 255, .3); }

body { overflow: hidden; }
.shell { display: grid; height: 100dvh; grid-template-columns: minmax(0, 1fr) 320px; grid-template-rows: 48px minmax(0, 1fr); grid-template-areas: "top top" "main side"; }
.topbar { grid-area: top; }
.main { grid-area: main; display: flex; flex-direction: column; gap: 10px; min-height: 0; padding: 12px; }

.pattern { display: flex; align-items: center; gap: 6px; height: 46px; padding: 0 8px 0 14px; background: var(--panel); border: 1px solid var(--border-2); border-radius: 10px; transition: border-color .12s, box-shadow .12s; }
.pattern:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.pattern.bad { border-color: var(--danger); box-shadow: 0 0 0 3px var(--danger-soft); }
.slash { font: 500 18px var(--mono); color: var(--text-3); }
#pattern { flex: 1; min-width: 0; border: 0; outline: 0; background: none; font: 500 15px var(--mono); }
.flags { display: flex; gap: 2px; }
.flags button { width: 24px; height: 24px; padding: 0; border: 1px solid var(--border); border-radius: 5px; background: var(--panel); font: 600 12px var(--mono); color: var(--text-3); }
.flags button[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.status { margin-left: 8px; font-size: 12px; color: var(--text-2); white-space: nowrap; font-variant-numeric: tabular-nums; }
.status b { color: var(--text); }
.err { padding: 8px 12px; border-radius: 8px; background: var(--danger-soft); color: var(--danger); font-size: 12.5px; }

.test { flex: 1 1 50%; min-height: 160px; display: flex; flex-direction: column; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.test-h { display: flex; align-items: center; gap: 10px; height: 36px; padding: 0 6px 0 14px; border-bottom: 1px solid var(--border); }
.hl-wrap { position: relative; flex: 1; min-height: 0; }
.backdrop, #text {
  position: absolute; inset: 0; margin: 0; padding: 12px 14px;
  font: 400 13.5px/1.7 var(--mono); letter-spacing: 0;
  white-space: pre-wrap; overflow-wrap: break-word; word-break: normal;
  overflow: auto; scrollbar-gutter: stable; tab-size: 4;
}
.backdrop { color: transparent; pointer-events: none; }
.backdrop mark { color: transparent; border-radius: 3px; }
.backdrop mark.m0 { background: var(--m0); }
.backdrop mark.m1 { background: var(--m1); }
.backdrop mark.zero { display: inline-block; width: 2px; margin-right: -2px; height: 1.2em; vertical-align: text-bottom; background: var(--danger); }
#text { border: 0; outline: 0; resize: none; background: transparent; color: var(--text); caret-color: var(--text); }

.tabs-box { flex: 1 1 40%; min-height: 0; display: flex; flex-direction: column; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.tabs { display: flex; gap: 2px; padding: 6px 8px 0; border-bottom: 1px solid var(--border); }
.tabs button { height: 32px; padding: 0 12px; border: 0; border-bottom: 2px solid transparent; background: none; font-weight: 500; color: var(--text-2); }
.tabs button[aria-selected="true"] { color: var(--text); border-bottom-color: var(--accent); }
.tab-b { flex: 1; min-height: 0; overflow: auto; padding: 12px; display: flex; flex-direction: column; gap: 10px; }
.tab-b .tbl-wrap { max-height: none; }
.tab-b td.mono { font-family: var(--mono); font-size: 12px; text-align: left; white-space: pre-wrap; }
.tab-b th { text-align: left; }
.tab-b tbody tr { cursor: pointer; }
.none { color: var(--text-3); text-align: center !important; padding: 18px !important; }
.out { margin: 0; padding: 12px 14px; border-radius: 8px; background: var(--sunken); border: 1px solid var(--border); font: 400 12.5px/1.6 var(--mono); white-space: pre-wrap; overflow-wrap: anywhere; color: var(--text); }
.code { position: relative; }
.code .btn { position: absolute; top: 8px; right: 8px; }

/* Lateral */
.side { grid-area: side; overflow: auto; border-left: 1px solid var(--border); }
.side-sec { display: flex; flex-direction: column; gap: 10px; padding: 14px 16px 16px; border-bottom: 1px solid var(--border); }
.explain { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.explain li { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 8px; align-items: baseline; padding-left: calc(var(--d) * 14px); font-size: 12.5px; color: var(--text-2); }
.explain code { padding: 1px 6px; border-radius: 4px; background: var(--sunken); color: var(--text); font: 500 12px var(--mono); white-space: nowrap; max-width: 150px; overflow: hidden; text-overflow: ellipsis; }
.explain .empty { display: block; text-align: left; padding: 0; }
.lib { display: flex; flex-wrap: wrap; gap: 4px; }
.lib button { height: 26px; padding: 0 10px; border: 1px solid var(--border-2); border-radius: 99px; background: var(--panel); font-size: 12px; color: var(--text-2); }
.lib button:hover { background: var(--hover); color: var(--text); }
.cheat { display: grid; gap: 10px; }
.cg { display: grid; grid-template-columns: 1fr 1fr; gap: 3px; }
.cg-t { grid-column: 1 / -1; font-size: 11px; font-weight: 600; color: var(--text-3); }
.cg button { display: flex; align-items: center; gap: 6px; min-width: 0; padding: 4px 6px; border: 0; border-radius: 6px; background: none; text-align: left; font-size: 11.5px; color: var(--text-2); }
.cg button:hover { background: var(--hover); }
.cg code { flex: none; min-width: 40px; padding: 1px 5px; border-radius: 4px; background: var(--sunken); color: var(--accent); font: 500 11.5px var(--mono); }
.cg span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

@media (max-width: 960px) {
  body { overflow: auto; }
  .shell { height: auto; grid-template-columns: minmax(0, 1fr); grid-template-rows: 48px auto auto; grid-template-areas: "top" "main" "side"; }
  .test { min-height: 260px; }
  .tabs-box { min-height: 300px; }
  .side { border-left: 0; border-top: 1px solid var(--border); }
  .pattern { flex-wrap: wrap; height: auto; padding: 8px 10px; }
}

/* Reemplazar: ayuda, códigos, aviso y resultado resaltado */
.repl-help { margin: 0; line-height: 1.5; }
.repl-tokens { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.repl-tokens button { display: inline-flex; align-items: center; gap: 6px; height: 28px; padding: 0 10px; border: 1px solid var(--border-2); border-radius: 999px; background: var(--panel); color: var(--text-2); font: inherit; font-size: 12px; cursor: pointer; max-width: 100%; }
.repl-tokens button:hover { border-color: var(--accent); color: var(--text); }
.repl-tokens code { font: 600 12px var(--mono); color: var(--accent); }
.repl-tokens span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.repl-nogroups { flex-basis: 100%; }
.repl-warn { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; padding: 8px 12px; border: 1px solid color-mix(in srgb, #d97706 45%, transparent); border-radius: 8px; background: color-mix(in srgb, #d97706 10%, var(--panel)); font-size: 12.5px; }
.repl-warn[hidden] { display: none; }
.repl-res-h { display: flex; align-items: baseline; gap: 10px; }
.out mark.rep { padding: 0 1px; border-radius: 3px; background: color-mix(in srgb, #16a34a 26%, transparent); color: inherit; }
.rep-empty { color: var(--danger); font-weight: 700; }
.repl-ex summary { cursor: pointer; font-size: 12.5px; color: var(--text-2); }
.repl-ex-list { display: grid; gap: 6px; margin-top: 8px; }
.repl-ex-list button { display: grid; gap: 2px; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--panel); color: var(--text); font: inherit; font-size: 12.5px; text-align: left; cursor: pointer; }
.repl-ex-list button:hover { border-color: var(--accent); }
.repl-ex-list code { font: 400 11.5px var(--mono); color: var(--text-2); overflow-wrap: anywhere; }

/* ───────── Móvil: la expresión a lo ancho y los modificadores debajo, más grandes ───────── */
@media (max-width: 700px) {
  .pattern { flex-wrap: wrap; height: auto; padding: 6px 8px 8px 12px; row-gap: 6px; }
  .pattern .slash:first-child { order: 0; }
  #pattern { flex: 1 1 0; min-height: 36px; }
  .flags { order: 5; flex: 1 1 100%; gap: 6px; }
  .flags button { flex: 1; width: auto; }
  .status { order: 6; flex: 1 1 100%; }
  .status:empty { display: none; }
}
:root[data-input="touch"] #pattern { font-size: 16px; }
:root[data-input="touch"] .flags button { height: 36px; font-size: 14px; }
:root[data-input="touch"] .backdrop, :root[data-input="touch"] #text { font-size: 16px; }
.ins-bar { display: flex; flex: none; gap: 6px; padding: 2px 0; overflow-x: auto; scrollbar-width: none; }
.ins-bar::-webkit-scrollbar { display: none; }
.ins-bar .btn { flex: none; min-width: 44px; justify-content: center; font: 600 15px var(--mono); }
:root[data-input="touch"] .ins-bar.touch-only { display: flex !important; }
:root[data-input="touch"] .cheat button { min-height: 38px; }