/* No webfonts, no CDN, no external anything — a single network request would
   contradict what this page claims about itself. System stacks only. */

:root {
  --paper: #fbfbf9;
  --card: #ffffff;
  --ink: #1a1a1a;
  --muted: #6b6b68;
  --line: #e0e0da;
  --accent: #1f4ed8;
  --accent-soft: #eaefff;
  --warn: #9a4a00;
  --warn-soft: #fdf1e3;
  --ok: #1d6a4a;
  --ok-soft: #e6f4ed;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #16171a;
    --card: #1e1f23;
    --ink: #e8e8e4;
    --muted: #9a9a95;
    --line: #33343a;
    --accent: #7d9cff;
    --accent-soft: #22283d;
    --warn: #e0a35e;
    --warn-soft: #33271a;
    --ok: #6fc79c;
    --ok-soft: #1a2e26;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 15px/1.55 var(--sans);
}

.wrap {
  max-width: 900px;
  margin: 0 auto;
  padding-block: 2.5rem 5rem;
  padding-left: 20px;
  padding-right: 20px;
}

header { border-bottom: 1px solid var(--line); padding-bottom: 1.5rem; margin-bottom: 2rem; }

h1 { font-size: 1.6rem; margin: 0 0 .4rem; letter-spacing: -.02em; }

.tagline { color: var(--muted); margin: 0 0 1rem; max-width: 60ch; }

.badge {
  display: inline-block;
  font: 600 11px/1 var(--mono);
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: .45rem .6rem;
  border-radius: 3px;
  background: var(--ok-soft);
  color: var(--ok);
  border: 1px solid currentColor;
}

h2 {
  font: 600 11px/1 var(--mono);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 2.5rem 0 .9rem;
}

h2 .num { color: var(--accent); }

textarea {
  width: 100%;
  min-height: 210px;
  padding: .9rem;
  font: 13px/1.6 var(--mono);
  color: var(--ink);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 5px;
  resize: vertical;
}

textarea:focus, input:focus, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.row { display: flex; gap: .6rem; flex-wrap: wrap; align-items: center; margin-top: .8rem; }

button {
  font: 500 14px var(--sans);
  padding: .55rem 1rem;
  border-radius: 5px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  cursor: pointer;
}

button:hover:not(:disabled) { border-color: var(--accent); }
button:disabled { opacity: .45; cursor: not-allowed; }

button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
button.primary:hover:not(:disabled) { filter: brightness(1.1); }

.hint { color: var(--muted); font-size: 13px; }

/* --- file list --- */
.files { list-style: none; margin: .8rem 0 0; padding: 0; }
.files li {
  display: flex; justify-content: space-between; align-items: center; gap: .8rem;
  font: 12px var(--mono); padding: .4rem .6rem;
  border: 1px solid var(--line); border-radius: 4px; margin-bottom: .35rem;
  background: var(--card);
}
.files button { padding: .15rem .45rem; font-size: 12px; }

/* --- review --- */
.group { margin-bottom: 1.6rem; }
.group-head {
  font: 600 11px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase;
  color: var(--muted); margin-bottom: .5rem;
}

.entity {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: .7rem;
  align-items: center;
  padding: .6rem .7rem;
  border: 1px solid var(--line);
  border-radius: 5px;
  margin-bottom: .4rem;
  background: var(--card);
}

.entity.off { opacity: .5; }

.entity input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--accent); cursor: pointer; }

.entity .val { font: 13px var(--mono); word-break: break-all; }

.entity .conf {
  font: 600 10px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase;
  padding: .3rem .4rem; border-radius: 3px; white-space: nowrap;
}
.conf.high { background: var(--ok-soft); color: var(--ok); }
.conf.medium { background: var(--accent-soft); color: var(--accent); }
.conf.low { background: var(--warn-soft); color: var(--warn); }

.entity .label-in {
  font: 12px var(--mono);
  width: 11ch; padding: .3rem .4rem;
  border: 1px solid var(--line); border-radius: 3px;
  background: var(--paper); color: var(--ink);
}

.entity .ctx {
  grid-column: 1 / -1;
  font: 12px/1.7 var(--mono);
  color: var(--muted);
  border-top: 1px dashed var(--line);
  padding-top: .5rem;
  margin-top: .1rem;
}
.entity .ctx mark { background: var(--accent-soft); color: var(--accent); padding: 0 2px; border-radius: 2px; }

/* --- output --- */
pre.out {
  font: 13px/1.6 var(--mono);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: .9rem;
  max-height: 420px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
}

pre.out b { background: var(--accent-soft); color: var(--accent); font-weight: 600; padding: 0 2px; border-radius: 2px; }

.tabs { display: flex; gap: .3rem; flex-wrap: wrap; margin-bottom: .6rem; }
.tabs button { font: 12px var(--mono); padding: .3rem .6rem; }
.tabs button[aria-selected="true"] { background: var(--accent); color: #fff; border-color: var(--accent); }

.stat { font: 12px var(--mono); color: var(--muted); margin-top: .6rem; }

/* --- limitations --- */
.limits {
  border: 1px solid var(--warn);
  background: var(--warn-soft);
  border-radius: 5px;
  padding: 1rem 1.1rem;
  margin-top: 3rem;
}
.limits h3 { margin: 0 0 .5rem; font-size: .95rem; color: var(--warn); }
.limits ul { margin: 0; padding-left: 1.1rem; }
.limits li { margin-bottom: .35rem; color: var(--ink); font-size: 14px; }
.limits p { margin: .7rem 0 0; font-size: 13px; color: var(--ink); }

footer { margin-top: 3rem; padding-top: 1.2rem; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
footer a { color: var(--accent); }

[hidden] { display: none !important; }

@media (max-width: 560px) {
  .entity { grid-template-columns: auto 1fr; }
  .entity .conf, .entity .label-in { grid-column: 2; justify-self: start; }
  .entity .label-in { width: 14ch; }
}