:root {
  --bg: #0b0d10;
  --panel: #14171c;
  --panel-2: #1a1e25;
  --border: #262b33;
  --text: #f2f3f5;
  --muted: #9aa2ad;
  --accent: #6ee7b7;
  --danger: #f87171;
  color-scheme: dark;
}

* { box-sizing: border-box; }

@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
}

a { color: inherit; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.wrap { max-width: 960px; margin: 0 auto; padding: 0 24px; }

/* ---- Top bar ---- */
.topbar { border-bottom: 1px solid var(--border); }

.topbar .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 16px;
  padding-bottom: 16px;
  font-size: 14px;
}

.topbar a { color: var(--muted); text-decoration: none; }
.topbar a:hover { color: var(--text); }
.topbar .home { font-weight: 600; color: var(--text); }

/* ---- Page heading ---- */
.page-head { padding: 48px 0 24px; }

h1.title { margin: 0 0 8px; font-size: clamp(30px, 6vw, 44px); line-height: 1.1; font-weight: 700; }

.lead { margin: 0; max-width: 56ch; color: var(--muted); font-size: 17px; }

main.tool { padding-bottom: 72px; }

.eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

/* ---- Cards (index) ---- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }

.card {
  display: block;
  padding: 24px;
  border-radius: 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  text-decoration: none;
  transition: border-color .15s ease, transform .15s ease;
}

.card:hover { border-color: var(--accent); transform: translateY(-3px); }

.card h3 { margin: 0 0 8px; font-size: 19px; line-height: 1.3; }
.card h3 .tag { margin-left: 6px; vertical-align: middle; position: relative; top: -1px; }
.card p { margin: 0; color: var(--muted); font-size: 14.5px; }

.tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: #06251b;
  background: var(--accent);
  padding: 2px 8px;
  border-radius: 999px;
}

/* ---- Panels / controls ---- */
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
}

.panel + .panel { margin-top: 16px; }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: .9em;
  background: var(--panel-2);
  border-radius: 5px;
  padding: 1px 5px;
}

.panel h2 {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}

.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.row.spread { justify-content: space-between; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font: inherit;
  font-weight: 600;
  font-size: 14.5px;
  cursor: pointer;
  text-decoration: none;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}

.btn:hover { transform: translateY(-1px); border-color: #3a414c; }
.btn:active { transform: translateY(0); }
.btn[aria-pressed="true"], .btn.active { border-color: var(--accent); color: var(--accent); }

.btn-primary { background: var(--accent); border-color: var(--accent); color: #06251b; }
.btn-primary:hover { background: #86f0c4; border-color: #86f0c4; }

textarea, input[type="text"], input[type="number"], select {
  width: 100%;
  background: #0f1216;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  font: inherit;
  font-size: 15px;
}

textarea { resize: vertical; min-height: 160px; }

.mono, textarea.mono, .out {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 13.5px;
}

.out {
  background: #0f1216;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  word-break: break-all;
  white-space: pre-wrap;
  min-height: 46px;
}

input[type="range"] { width: 100%; accent-color: var(--accent); }
input[type="checkbox"] { accent-color: var(--accent); width: 16px; height: 16px; }

label.check { display: inline-flex; align-items: center; gap: 8px; font-size: 14.5px; cursor: pointer; }

.muted { color: var(--muted); }
.small { font-size: 13px; }
.ok { color: var(--accent); }
.err { color: var(--danger); }

kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12.5px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 6px;
  padding: 1px 6px;
}

footer.site { border-top: 1px solid var(--border); padding: 28px 0; text-align: center; color: var(--muted); font-size: 13px; }

@media (max-width: 560px) {
  .wrap { padding: 0 16px; }
  .page-head { padding: 32px 0 16px; }
}

@media (prefers-reduced-motion: reduce) {
  *, ::before, ::after { transition: none !important; }
  .btn:hover, .btn:active, .card:hover { transform: none; }
}

/* ---- Shared bits used by several tools ---- */
.btn.sm { padding: 6px 12px; font-size: 13px; }

.chips { display: flex; gap: 8px; flex-wrap: wrap; }

dl.kv { margin: 0; display: grid; grid-template-columns: minmax(110px, 30%) 1fr; }
dl.kv dt, dl.kv dd { margin: 0; padding: 10px 0; border-top: 1px solid var(--border); }
dl.kv dt:first-of-type, dl.kv dt:first-of-type + dd { border-top: 0; }
dl.kv dt { color: var(--muted); font-size: 14.5px; padding-right: 16px; }
dl.kv dd { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; font-size: 13.5px; word-break: break-word; display: flex; gap: 10px; align-items: baseline; justify-content: space-between; }
dl.kv dd .copy { flex: none; }
@media (max-width: 560px) {
  dl.kv { grid-template-columns: 1fr; }
  dl.kv dt { padding: 10px 0 0; border-top: 1px solid var(--border); }
  dl.kv dt:first-of-type { border-top: 0; }
  dl.kv dd { padding: 2px 0 10px; border-top: 0; }
}

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 12px; }
.stats > div { background: #0f1216; border: 1px solid var(--border); border-radius: 10px; padding: 10px 14px; }
.stats b { display: block; font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.stats span { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 18px; }