*, *::before, *::after { box-sizing: border-box; }

:root {
  --bg: #ffffff;
  --fg: #14161a;
  --muted: #5b6470;
  --line: #dfe3e8;
  --accent: #1f6feb;
  --accent-fg: #ffffff;
  --warn: #8a5300;
  --warn-bg: #fff7e6;
  --panel: #f7f8fa;
}

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  padding: 16px;
}

main {
  max-width: 1100px;
  margin: 0 auto;
}

h1 {
  font-size: 1.5rem;
  line-height: 1.25;
  margin: 0 0 16px;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 1.15rem;
  margin: 32px 0 8px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

h3 {
  font-size: 1rem;
  margin: 20px 0 4px;
}

p, li { color: #26292f; }

code {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 4px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.85em;
  word-break: break-word;
}

/* ---------- tool ---------- */

.tool {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 860px) {
  .tool { grid-template-columns: 1fr 1fr; }
}

.pane {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  min-width: 0;
}

.pane > label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 6px;
}

textarea {
  width: 100%;
  min-height: 190px;
  resize: vertical;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9rem;
  line-height: 1.55;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--fg);
  -webkit-appearance: none;
}

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

.row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
}

.row.meta {
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--muted);
}

input[type="file"] {
  max-width: 100%;
  font-size: 0.8rem;
}

#count { white-space: nowrap; }

fieldset {
  border: 1px solid var(--line);
  border-radius: 8px;
  margin: 12px 0 0;
  padding: 10px;
  background: #fff;
}

legend {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0 4px;
}

.opt {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 0.88rem;
  padding: 5px 0;
}

.opt.check {
  justify-content: flex-start;
  align-items: flex-start;
}

.opt.check input {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  flex: none;
}

.opt select {
  font-size: 0.85rem;
  padding: 5px 6px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  max-width: 60%;
}

.warn {
  margin: 6px 0 0;
  font-size: 0.78rem;
  color: var(--warn);
  background: var(--warn-bg);
  border-radius: 6px;
  padding: 6px 8px;
}

button {
  font: inherit;
  font-size: 0.9rem;
  padding: 10px 16px;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--fg);
  cursor: pointer;
}

button:hover { border-color: #b9c0c8; }

button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-fg);
  font-weight: 600;
}

button.primary:hover { filter: brightness(1.06); }

.copied {
  font-size: 0.8rem;
  color: #0a7a3c;
  font-weight: 600;
}

/* ---------- report ---------- */

#report { margin-top: 12px; }

#report .empty {
  font-size: 0.85rem;
  color: var(--muted);
}

#report .summary {
  font-size: 0.85rem;
  margin: 0 0 8px;
}

#report .scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

#report table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.8rem;
}

#report th, #report td {
  text-align: left;
  padding: 6px 8px;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

#report td:last-child { text-align: right; }

#report tr:last-child td { border-bottom: none; }

#report .cp {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

#report td.name { white-space: normal; min-width: 160px; }

/* ---------- content ---------- */

section > ul { padding-left: 20px; }

li { margin: 4px 0; }

/* ---------- cross links ---------- */

.crosslink {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 0.9rem;
}

.crosslink a { color: var(--accent); }

/* ---------- highlight preview ---------- */

.hint {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0 0 8px;
}

.preview {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  max-height: 280px;
  overflow-y: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.85rem;
  line-height: 2;
}

.preview.empty {
  color: var(--muted);
  font-family: inherit;
}

.chip {
  background: #fff1f0;
  border: 1px solid #ffccc7;
  color: #a8071a;
  border-radius: 4px;
  padding: 1px 4px;
  font-size: 0.75rem;
  cursor: help;
}

.chip.soft {
  background: var(--warn-bg);
  border-color: #ffd591;
  color: var(--warn);
}

.legend {
  color: var(--muted);
  font-size: 0.8rem;
  margin: 8px 0 0;
}

/* ---------- breadcrumb ---------- */

.crumbs {
  font-size: 0.8rem;
  color: var(--muted);
  margin: 0 0 6px;
}

.crumbs a { color: var(--muted); }

/* ---------- reference tables ---------- */

.scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  margin: 0 0 12px;
}

table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.8rem;
}

th, td {
  text-align: left;
  padding: 6px 8px;
  border-bottom: 1px solid var(--line);
  white-space: normal;
  vertical-align: top;
}

th {
  background: var(--panel);
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
}

td:last-child { text-align: right; }
tr:last-child td { border-bottom: none; }

td.cp {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: nowrap;
}

td.name { min-width: 140px; }

.ent {
  color: var(--muted);
  font-size: 0.72rem;
  margin-top: 4px;
}

.ent code { font-size: 0.72rem; }

.na {
  color: var(--muted);
  font-size: 0.72rem;
  white-space: nowrap;
}

.sr {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.copylive {
  background: var(--warn-bg);
  border: 1px solid #ffd591;
  color: var(--warn);
  border-radius: 8px;
  padding: 8px 12px;
  margin: 0 0 12px;
  font-size: 0.85rem;
}

/* ---------- json validity panel ---------- */

.jsonstatus {
  border-radius: 8px;
  padding: 10px 12px;
  margin: 0 0 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.jsonstatus strong { font-size: 0.9rem; }
.jsonstatus span { font-size: 0.8rem; }

.jsonstatus.ok {
  background: #f6ffed;
  border: 1px solid #b7eb8f;
  color: #237804;
}

.jsonstatus.ok span { color: #389e0d; }

.jsonstatus.bad {
  background: #fff1f0;
  border: 1px solid #ffccc7;
  color: #a8071a;
}

.jsonstatus.bad span { color: #a8071a; }

/* ---------- footer ---------- */

.foot {
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 0.8rem;
  color: var(--muted);
}

.foot a { color: var(--muted); }