/* env-diff — self-contained brand. No external fonts, no CDN, zero network. */

:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --panel-2: #f9fafb;
  --ink: #16202a;
  --ink-soft: #4a5763;
  --ink-faint: #7a8794;
  --line: #dde3e9;
  --line-strong: #c7d0d9;
  --accent: #0e8f7e;
  --accent-ink: #0a5f54;
  --warn: #b5651d;
  --warn-bg: #fbf1e6;
  --info: #2a6fb0;
  --info-bg: #eaf2fb;
  --diff: #8a3ab0;
  --diff-bg: #f5ebfb;
  --ok: #1f8a4c;
  --ok-bg: #e9f6ee;
  --muted-bg: #eef1f4;
  --radius: 12px;
  --mono: ui-monospace, "SF Mono", "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --shadow: 0 1px 2px rgba(16,32,42,.06), 0 4px 14px rgba(16,32,42,.05);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1418;
    --panel: #161e24;
    --panel-2: #121a20;
    --ink: #e6edf2;
    --ink-soft: #a7b4bf;
    --ink-faint: #75828d;
    --line: #26313a;
    --line-strong: #33404a;
    --accent: #2dd4bf;
    --accent-ink: #6ee7d6;
    --warn: #e0a35a;
    --warn-bg: #2a2115;
    --info: #6fb0f0;
    --info-bg: #14202e;
    --diff: #c68ae6;
    --diff-bg: #241a2e;
    --ok: #5fd08a;
    --ok-bg: #12241a;
    --muted-bg: #1a232a;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 6px 18px rgba(0,0,0,.35);
  }
}

* { box-sizing: border-box; }

html, body { margin: 0; }

body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.45;
  -webkit-text-size-adjust: 100%;
  padding: 0 clamp(12px, 3vw, 28px);
}

code { font-family: var(--mono); font-size: .92em; }

/* ---- header ---- */
.site-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 0 10px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  display: grid; place-items: center;
  width: 42px; height: 42px;
  border-radius: 11px;
  color: #fff;
  background: linear-gradient(150deg, var(--accent), var(--accent-ink));
  box-shadow: var(--shadow);
}
.brand-text h1 {
  margin: 0;
  font-size: 1.35rem;
  letter-spacing: -.01em;
  font-family: var(--mono);
}
.tagline { margin: 1px 0 0; color: var(--ink-soft); font-size: .86rem; }

.head-controls { display: flex; align-items: center; gap: 12px; }
.reveal-toggle {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--panel);
  font-size: .88rem; font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow);
  user-select: none;
}
.reveal-toggle input { width: 16px; height: 16px; accent-color: var(--accent); cursor: pointer; }

/* ---- trust line ---- */
.trust {
  max-width: 1180px;
  margin: 0 auto 14px;
  padding: 9px 14px;
  background: var(--ok-bg);
  border: 1px solid color-mix(in srgb, var(--ok) 30%, transparent);
  border-radius: 10px;
  color: var(--ink);
  font-size: .84rem;
  display: flex; align-items: center; gap: 10px;
}
.trust-dot {
  flex: none;
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--ok) 22%, transparent);
}

main { max-width: 1180px; margin: 0 auto; }

/* ---- panes ---- */
.panes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.pane {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex; flex-direction: column;
}
.pane-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
}
.pane-head label { font-weight: 700; font-size: .92rem; }
.pane-head .hint { color: var(--ink-faint); font-size: .76rem; }
textarea {
  width: 100%;
  border: 0;
  resize: vertical;
  background: var(--panel);
  color: var(--ink);
  font-family: var(--mono);
  font-size: .84rem;
  line-height: 1.55;
  padding: 12px 14px;
  min-height: 210px;
  outline: none;
  tab-size: 2;
}
textarea:focus { background: color-mix(in srgb, var(--accent) 5%, var(--panel)); }

/* ---- report ---- */
.report { margin-top: 18px; }
.report-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap;
  margin-bottom: 10px;
}
.report-head h2, .gen-head h2 {
  margin: 0; font-size: 1.05rem; letter-spacing: -.01em;
}
.summary { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: 999px;
  font-size: .78rem; font-weight: 600;
  border: 1px solid var(--line-strong);
  background: var(--panel);
  color: var(--ink-soft);
}
.chip-n { font-weight: 800; color: var(--ink); }
.chip-warn { background: var(--warn-bg); border-color: color-mix(in srgb, var(--warn) 34%, transparent); }
.chip-info { background: var(--info-bg); border-color: color-mix(in srgb, var(--info) 34%, transparent); }
.chip-diff { background: var(--diff-bg); border-color: color-mix(in srgb, var(--diff) 34%, transparent); }
.chip-muted { background: var(--muted-bg); }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 14px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 4px solid var(--line-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 13px 15px;
}
.card-warn { border-left-color: var(--warn); }
.card-info { border-left-color: var(--info); }
.card-diff { border-left-color: var(--diff); }
.card-ok   { border-left-color: var(--ok); }
.card-muted{ border-left-color: var(--ink-faint); }
.card-head { display: flex; align-items: center; gap: 10px; }
.card-head h3 { margin: 0; font-size: .98rem; }
.badge {
  margin-left: auto;
  min-width: 24px; text-align: center;
  padding: 1px 8px; border-radius: 999px;
  font-size: .78rem; font-weight: 800;
  background: var(--muted-bg); color: var(--ink);
}
.card-desc { margin: 6px 0 10px; color: var(--ink-soft); font-size: .8rem; }

.kv-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.kv-list li {
  display: flex; align-items: baseline; flex-wrap: wrap; gap: 6px;
  font-family: var(--mono); font-size: .82rem;
  padding: 5px 8px; border-radius: 8px;
  background: var(--panel-2);
  border: 1px solid var(--line);
}
.kv-list .k { color: var(--accent-ink); font-weight: 700; word-break: break-all; }
.kv-list .eq { color: var(--ink-faint); }
.kv-list .v { color: var(--ink); word-break: break-all; }
.kv-list .side {
  margin-left: auto; font-family: var(--sans);
  font-size: .68rem; color: var(--ink-faint);
  white-space: nowrap; padding-left: 8px;
}
.kv-list .lines { color: var(--ink-soft); font-size: .76rem; }
.kv-diff { flex-direction: column; align-items: stretch; }
.pair { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.pair .arrow { color: var(--ink-faint); }
.v-left { color: var(--warn); }
.v-right { color: var(--info); }

.un-item { flex-direction: column; align-items: stretch; gap: 4px; }
.un-top { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.un-top .reason { font-family: var(--sans); font-size: .74rem; color: var(--ink-soft); }
.un-text { color: var(--ink-faint); word-break: break-all; font-size: .8rem; }

.empty { min-height: 4px; }

/* ---- generator ---- */
.generator {
  margin: 20px 0 8px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 15px;
}
.gen-head {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 14px; flex-wrap: wrap;
}
.gen-sub { margin: 4px 0 0; color: var(--ink-soft); font-size: .82rem; max-width: 60ch; }
.gen-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.btn {
  font: inherit; font-weight: 600; font-size: .85rem;
  padding: 8px 14px; border-radius: 9px;
  border: 1px solid var(--line-strong);
  background: var(--panel); color: var(--ink);
  cursor: pointer;
}
.btn:hover { border-color: var(--accent); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary {
  background: linear-gradient(150deg, var(--accent), var(--accent-ink));
  color: #fff; border-color: transparent;
}
.btn-primary:hover { filter: brightness(1.05); border-color: transparent; }
.gen-out {
  margin-top: 12px;
  min-height: 130px;
  border: 1px solid var(--line);
  border-radius: 10px;
}
.gen-note { margin: 8px 0 0; color: var(--ink-faint); font-size: .78rem; min-height: 1em; }

/* ---- explainer (graduated-page addition; brand tokens only) ---- */
.explain {
  margin-top: 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 15px;
}
.explain h2 { margin: 0 0 8px; font-size: 1.05rem; letter-spacing: -.01em; }
.explain p { margin: 0 0 10px; color: var(--ink-soft); font-size: .86rem; max-width: 76ch; }
.explain p:last-child { margin-bottom: 0; }

a { color: var(--accent-ink); }

/* ---- footer ---- */
.site-foot {
  max-width: 1180px; margin: 6px auto 26px;
  color: var(--ink-faint); font-size: .78rem;
}
.site-foot p { margin: 0; max-width: 80ch; }

/* ---- responsive ---- */
@media (max-width: 720px) {
  .panes { grid-template-columns: 1fr; }
  textarea { min-height: 150px; }
  .site-head { padding-top: 12px; }
  .brand-text h1 { font-size: 1.2rem; }
  .cards { grid-template-columns: 1fr; }
  .gen-actions { width: 100%; }
  .gen-actions .btn { flex: 1; }
}