:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --ink: #1f2328;
  --muted: #5f666d;
  --line: #d0d5da;
  --accent: #1d4e89;
  --accent-ink: #ffffff;
  --ok-bg: #e6f4ea; --ok-ink: #1e6b34;
  --warn-bg: #fff4e0; --warn-ink: #7a4b00;
  --err-bg: #fdecea; --err-ink: #a1261b;
  --info-bg: #e8f0fb; --info-ink: #1d4e89;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171a; --panel: #1c2024; --ink: #e8eaed; --muted: #a3aab1; --line: #353b41;
    --accent: #7fb0ee; --accent-ink: #0d1117;
    --ok-bg: #173322; --ok-ink: #8fd6a4; --warn-bg: #3a2c10; --warn-ink: #f2c779;
    --err-bg: #3d1a17; --err-ink: #f4a39a; --info-bg: #182a40; --info-ink: #a9c9f2;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
header.top { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 16px;
  background: var(--panel); border-bottom: 1px solid var(--line); }
header.top a.brand { color: var(--ink); font-weight: 700; text-decoration: none; letter-spacing: .02em; }
header.top #who { display: flex; gap: 12px; align-items: center; }
main { max-width: 920px; margin: 0 auto; padding: 20px 16px 48px; }
h1 { font-size: 1.6rem; margin: .2em 0 .3em; }
h2 { font-size: 1.15rem; margin: 1.6em 0 .5em; }
section.card { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 16px; margin: 14px 0; }
.muted { color: var(--muted); }
.small { font-size: .88rem; }
.pre { white-space: pre-wrap; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.big { font-size: 1.3rem; font-weight: 700; }
a { color: var(--accent); }
button, a.button { font: inherit; border: 1px solid var(--accent); background: var(--accent); color: var(--accent-ink);
  padding: 8px 14px; border-radius: 6px; cursor: pointer; text-decoration: none; display: inline-block; }
button.secondary, a.button.secondary { background: transparent; color: var(--accent); }
button.danger { background: transparent; color: var(--err-ink); border-color: var(--err-ink); }
button.link { background: none; border: none; color: var(--accent); padding: 0; text-decoration: underline; }
button:disabled { opacity: .5; cursor: not-allowed; }
label { display: block; font-weight: 600; margin: 12px 0 4px; }
label.inline { display: flex; gap: 8px; align-items: flex-start; font-weight: 400; }
input[type=text], input[type=email], input[type=date], textarea { width: 100%; font: inherit; padding: 8px 10px;
  border: 1px solid var(--line); border-radius: 6px; background: var(--panel); color: var(--ink); }
textarea { min-height: 160px; resize: vertical; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: .85rem; color: var(--muted); font-weight: 600; }
.table-wrap { overflow-x: auto; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: .8rem; font-weight: 600;
  background: var(--info-bg); color: var(--info-ink); white-space: nowrap; }
.badge.signed, .badge.completed { background: var(--ok-bg); color: var(--ok-ink); }
.badge.signing, .badge.ready { background: var(--warn-bg); color: var(--warn-ink); }
.badge.cancelled, .badge.voided { background: var(--err-bg); color: var(--err-ink); }
.msg { padding: 10px 12px; border-radius: 6px; margin: 10px 0; }
.msg.ok { background: var(--ok-bg); color: var(--ok-ink); }
.msg.error { background: var(--err-bg); color: var(--err-ink); }
.msg.info { background: var(--info-bg); color: var(--info-ink); }
.msg.warn { background: var(--warn-bg); color: var(--warn-ink); }
.quote { border-left: 3px solid var(--accent); padding: 8px 12px; background: var(--bg); margin: 10px 0; white-space: pre-wrap; }
iframe.pdf { width: 100%; height: 70vh; border: 1px solid var(--line); border-radius: 6px; background: #fff; }
.signer-row { display: grid; grid-template-columns: 1.2fr 1.4fr 1fr 1fr auto; gap: 6px; margin-bottom: 6px; }
.fonts { display: grid; gap: 8px; }
.font { display: flex; align-items: center; gap: 10px; border: 1px solid var(--line); border-radius: 6px; padding: 6px 10px; font-weight: 400; margin: 0; }
.font img { height: 40px; max-width: 60%; background: #fff; border-radius: 4px; }
.kv { display: grid; grid-template-columns: 160px 1fr; gap: 4px 12px; }
.kv dt { color: var(--muted); font-size: .9rem; }
.kv dd { margin: 0; }
details summary { cursor: pointer; font-weight: 600; }
code { font-size: .85em; word-break: break-all; }
@media (max-width: 640px) {
  .signer-row { grid-template-columns: 1fr; border-bottom: 1px solid var(--line); padding-bottom: 8px; }
  .kv { grid-template-columns: 1fr; }
  .kv dt { margin-top: 6px; }
}
.m0 { margin: 0; }
.mt0 { margin-top: 0; }
.mt8 { margin-top: 8px; }
.mt16 { margin-top: 16px; }
textarea.short { min-height: 80px; }
.preview-banner { background: var(--warn-bg); color: var(--warn-ink); padding: 8px 16px; text-align: center; font-weight: 600; }
header.top span.brand { font-weight: 700; letter-spacing: .02em; }
.msg.warn p { margin: 6px 0 10px; }
.badge.test { background: var(--warn-bg); color: var(--warn-ink); border: 1px solid var(--warn-ink); }
h3 { font-size: 1rem; margin: 1.2em 0 .4em; }
ol.artifacts { padding-left: 22px; margin: 0; }
ol.artifacts li { margin: 0 0 10px; }
.artifact-row { display: grid; grid-template-columns: 1.4fr 1.6fr auto; gap: 6px 10px; align-items: center; margin-bottom: 8px;
  padding-bottom: 8px; border-bottom: 1px solid var(--line); }
.artifact-row > .small { grid-column: 1 / -1; }
.artifact-row .file-name { overflow-wrap: anywhere; }
label.check { display: flex; gap: 8px; align-items: flex-start; margin-top: 14px; font-weight: 400; }
label.check input { margin-top: 4px; }
@media (max-width: 640px) { .artifact-row { grid-template-columns: 1fr; } }