/* Regexer — dark "regex console" theme.
   Mint primary + violet accent (from site.config.json), green-tinted surfaces.
   Declared in both modes so the palette is identical regardless of
   prefers-color-scheme and load order. */

:root {
  --bg: #0d1512;
  --surface: #122019;
  --surface-2: #1a2b22;
  --text: #e8f2ec;
  --text-dim: #93ab9e;
  --border: #2a4438;
  --rx-ok: #3ddc97;
  --rx-bad: #ff7a90;
  --rx-dim: #6e8a7d;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1512;
    --surface: #122019;
    --surface-2: #1a2b22;
    --text: #e8f2ec;
    --text-dim: #93ab9e;
    --border: #2a4438;
  }
}
html {
  color-scheme: dark; /* native controls (checkbox/scrollbars) go dark */
}

/* ---------- tool shell ---------- */
.rx {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 1.1rem 1.1rem 1rem;
  margin: 1.4rem 0 1.8rem;
  box-shadow: 0 10px 34px -20px rgba(0, 0, 0, 0.75);
}
@media (min-width: 54rem) {
  .prose .rx {
    width: min(66rem, calc(100vw - 2.5rem));
  }
}

/* ---------- pattern + flags row ---------- */
.rx-prow {
  display: flex;
  align-items: stretch;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.rx-slash {
  font-family: var(--mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--rx-dim);
  display: flex;
  align-items: center;
  user-select: none;
}
#rx-pattern {
  flex: 1 1 18rem;
  min-width: 0;
  font-family: var(--mono);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem 0.7rem;
  box-sizing: border-box;
  transition: border-color 0.15s, box-shadow 0.15s;
}
#rx-pattern:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 20%, transparent);
}
#rx-pattern.invalid {
  border-color: var(--rx-bad);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--rx-bad) 18%, transparent);
}
.rx-flagrow {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.15rem 0.55rem;
  padding: 0.35rem 0.6rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.rx-flag {
  display: inline-flex;
  align-items: center;
  gap: 0.28rem;
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0.15rem 0.2rem;
}
.rx-flag input {
  margin: 0;
  accent-color: var(--primary);
  cursor: pointer;
}
.rx-flag:has(input:checked) { color: var(--primary); }
.rx-flag small {
  font-family: var(--font);
  font-weight: 400;
  font-size: 0.72rem;
  color: var(--rx-dim);
}

/* ---------- test string ---------- */
.rx-test {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: 0.85rem;
}
.rx-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}
#rx-input {
  font-family: var(--mono);
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.7rem;
  resize: vertical;
  min-height: 5.5rem;
  box-sizing: border-box;
  width: 100%;
}
#rx-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 20%, transparent);
}

/* ---------- mode tabs ---------- */
.rx-modes {
  display: flex;
  gap: 0.4rem;
  margin-top: 0.85rem;
  flex-wrap: wrap;
}
.rx-modes button {
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 0.4rem 0.9rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-dim);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.rx-modes button:hover { color: var(--text); }
.rx-modes button.on {
  background: color-mix(in srgb, var(--primary) 16%, var(--bg));
  border-color: color-mix(in srgb, var(--primary) 65%, var(--border));
  color: var(--primary);
}

/* ---------- status + warning ---------- */
.rx-status {
  margin: 0.7rem 0 0;
  font-family: var(--mono);
  font-size: 0.83rem;
  color: var(--text-dim);
  min-height: 1.4em;
}
.rx-status.ok { color: var(--rx-ok); }
.rx-status.bad { color: var(--rx-bad); }
.rx-warn {
  margin-top: 0.6rem;
  font-size: 0.85rem;
  line-height: 1.55;
  color: #ffd9a0;
  background: color-mix(in srgb, #ff9f43 10%, var(--bg));
  border: 1px solid color-mix(in srgb, #ff9f43 45%, var(--border));
  border-radius: 8px;
  padding: 0.6rem 0.8rem;
}
.rx-warn code { font-size: 0.8rem; }

/* ---------- highlighted output ---------- */
.rx-panehead {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.6rem;
  margin-top: 0.9rem;
}
.rx-panehead .rx-label { margin: 0; }
#rx-count {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--primary);
}
.rx-hl {
  margin-top: 0.4rem;
  font-family: var(--mono);
  font-size: 0.92rem;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-all;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.7rem;
  min-height: 3.2rem;
}
.rx-hint { color: var(--rx-dim); font-family: var(--font); font-size: 0.85rem; }
.rx-hl mark.rx-m {
  background: color-mix(in srgb, var(--primary) 22%, transparent);
  color: var(--text);
  border-radius: 3px;
  padding: 0.05em 0;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--primary) 45%, transparent);
}
.rx-zero {
  display: inline-block;
  width: 0;
  border-left: 3px solid var(--primary);
  height: 1.1em;
  vertical-align: text-bottom;
}

/* capture-group colors — 8 rotating hues, legible on dark bg */
.rx-hl .rx-g, .rx-groups .rx-g {
  border-radius: 3px;
  padding: 0.05em 0.12em;
  box-shadow: inset 0 0 0 1px color-mix(in srgb, currentColor 55%, transparent);
}
.rx-groups .rx-g { padding: 0.1em 0.3em; }
.rx-g1 { color: #7ee2ff; background: color-mix(in srgb, #7ee2ff 12%, transparent); }
.rx-g2 { color: #ffb86b; background: color-mix(in srgb, #ffb86b 12%, transparent); }
.rx-g3 { color: #ff8ad8; background: color-mix(in srgb, #ff8ad8 12%, transparent); }
.rx-g4 { color: #a3e635; background: color-mix(in srgb, #a3e635 12%, transparent); }
.rx-g5 { color: #c4b5fd; background: color-mix(in srgb, #c4b5fd 12%, transparent); }
.rx-g6 { color: #f87171; background: color-mix(in srgb, #f87171 12%, transparent); }
.rx-g7 { color: #facc15; background: color-mix(in srgb, #facc15 12%, transparent); }
.rx-g8 { color: #5eead4; background: color-mix(in srgb, #5eead4 12%, transparent); }

/* ---------- match list ---------- */
.rx-ml {
  margin: 0.9rem 0 0;
  padding-left: 1.4rem;
  font-family: var(--mono);
  font-size: 0.85rem;
}
.rx-ml > li { margin-bottom: 0.55rem; }
.rx-ml > li::marker { color: var(--rx-dim); }
.rx-mlhead {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.rx-mlnum { color: var(--rx-dim); font-weight: 700; }
.rx-mlrange { color: var(--accent); font-size: 0.78rem; }
.rx-mltxt {
  font-size: 0.85rem;
  background: var(--surface-2);
  color: var(--text);
  word-break: break-all;
}
.rx-groups {
  margin: 0.3rem 0 0;
  padding-left: 1.2rem;
  font-size: 0.8rem;
}
.rx-groups li { margin-bottom: 0.2rem; }
.rx-groups li::marker { color: var(--rx-dim); }

/* ---------- replace pane ---------- */
.rx-replrow {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.45rem;
  align-items: stretch;
  flex-wrap: wrap;
}
#rx-repl {
  flex: 1 1 16rem;
  min-width: 0;
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.45rem 0.65rem;
  box-sizing: border-box;
}
#rx-repl:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 20%, transparent);
}
.rx-btn {
  font: inherit;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.4rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  cursor: pointer;
  white-space: nowrap;
  transition: border-color 0.15s;
}
.rx-btn:hover { border-color: color-mix(in srgb, var(--primary) 60%, var(--border)); }
#rx-repl-out {
  margin: 0.6rem 0 0;
  font-family: var(--mono);
  font-size: 0.9rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.7rem;
  min-height: 2.6rem;
  color: var(--text);
}
.rx-replhint {
  margin: 0.45rem 0 0;
  font-size: 0.78rem;
  color: var(--text-dim);
}
.rx-replhint code { font-size: 0.74rem; }

/* ---------- explain pane ---------- */
.rx-parts {
  margin: 0.9rem 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.88rem;
}
.rx-part {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-left-width: 3px;
  border-radius: 6px;
  padding: 0.4rem 0.6rem;
}
.rx-part code {
  flex: 0 0 auto;
  min-width: 3.5rem;
  text-align: center;
  font-size: 0.85rem;
  background: var(--surface-2);
  word-break: break-all;
}
.rx-part span { color: var(--text-dim); }
.rx-p-lit { border-left-color: var(--rx-dim); }
.rx-p-cls { border-left-color: #7ee2ff; }
.rx-p-esc { border-left-color: #7ee2ff; }
.rx-p-quant { border-left-color: var(--primary); }
.rx-p-grp { border-left-color: var(--accent); }
.rx-p-alt { border-left-color: #ffb86b; }
.rx-p-anchor { border-left-color: #facc15; }

/* ---------- library ---------- */
.rx-lib { margin-top: 1.1rem; }
.rx-lib h2 {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin: 0 0 0.5rem;
}
.rx-librow {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.rx-librow button {
  font: inherit;
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.32rem 0.7rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--primary);
  cursor: pointer;
}
.rx-librow button:hover { border-color: var(--primary); }
.rx-libnote {
  margin: 0.6rem 0 0;
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--text-dim);
  min-height: 1.4em;
}

/* ---------- article polish ---------- */
.prose pre { background: var(--bg); border: 1px solid var(--border); }
.prose code { background: var(--surface-2); overflow-wrap: anywhere; }
.prose pre code { background: none; }
.prose table code { white-space: nowrap; }
.prose th, .prose td { border-color: var(--border); }

@media (max-width: 480px) {
  .rx { padding: 0.8rem; }
  .rx-modes button, .rx-btn { min-height: 2.5rem; }
  .rx-flag { padding: 0.4rem 0.3rem; }
  .rx-librow button { min-height: 2.5rem; padding: 0.4rem 0.75rem; }
  .rx-part { flex-direction: column; gap: 0.2rem; }
  .rx-part code { text-align: left; }
}