:root {
  --bg: #f7f5f0;
  --bg-raised: #ffffff;
  --bg-sunken: #eeebe3;
  --ink: #1e1c17;
  --ink-soft: #6b6558;
  --border: #e0dbcd;
  --accent: #a8762f;
  --accent-ink: #ffffff;
  --accent-soft: #f1e3cc;
  --good: #2f6b4f;
  --good-soft: #e2efe6;
  --bad: #a5382c;
  --bad-soft: #f6e5e2;
  --shadow: 0 1px 2px rgba(30, 28, 23, 0.06), 0 8px 24px rgba(30, 28, 23, 0.06);
  --radius: 10px;
  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "Source Sans 3", "Segoe UI", system-ui, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #17150f;
    --bg-raised: #1f1c15;
    --bg-sunken: #12100b;
    --ink: #eee9dd;
    --ink-soft: #a89f8c;
    --border: #35301f;
    --accent: #d6a558;
    --accent-ink: #17150f;
    --accent-soft: #362b16;
    --good: #7fc9a3;
    --good-soft: #1c2c22;
    --bad: #e08d7c;
    --bad-soft: #2f1e1a;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}
:root[data-theme="dark"] {
  --bg: #17150f;
  --bg-raised: #1f1c15;
  --bg-sunken: #12100b;
  --ink: #eee9dd;
  --ink-soft: #a89f8c;
  --border: #35301f;
  --accent: #d6a558;
  --accent-ink: #17150f;
  --accent-soft: #362b16;
  --good: #7fc9a3;
  --good-soft: #1c2c22;
  --bad: #e08d7c;
  --bad-soft: #2f1e1a;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
}
.app { min-height: 100vh; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; text-wrap: balance; margin: 0 0 0.5em; }
p { margin: 0 0 1em; }
a { color: var(--accent); }
button { font-family: var(--font-body); cursor: pointer; }

/* ---------- login ---------- */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 36px 32px;
  text-align: center;
}
.brand { display: flex; align-items: center; gap: 12px; justify-content: center; margin-bottom: 18px; }
.brand-mark {
  width: 36px; height: 36px; border-radius: 8px;
  background: var(--accent); color: var(--accent-ink);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-weight: 700; font-size: 18px;
}
.brand-name { font-family: var(--font-display); font-size: 20px; font-weight: 600; }
.login-lede { color: var(--ink-soft); font-size: 14px; margin-bottom: 24px; }
.login-form { display: flex; flex-direction: column; gap: 12px; }
#codeInput {
  font-size: 20px; letter-spacing: 0.15em; text-align: center;
  padding: 12px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--bg-sunken); color: var(--ink);
}
.login-form button {
  padding: 11px; border-radius: 8px; border: none;
  background: var(--accent); color: var(--accent-ink); font-weight: 600; font-size: 15px;
}
.login-error { color: var(--bad); font-size: 13px; margin-top: 14px; }

/* ---------- shell ---------- */
.topbar {
  display: flex; align-items: center; gap: 20px;
  padding: 14px 28px; border-bottom: 1px solid var(--border);
  background: var(--bg-raised); position: sticky; top: 0; z-index: 5;
}
.brand-sm .brand-mark { width: 28px; height: 28px; font-size: 14px; border-radius: 6px; }
.brand-sm .brand-name { font-size: 16px; }
.tabs { display: flex; gap: 4px; flex: 1; }
.tab-btn {
  padding: 8px 14px; border: none; background: transparent; color: var(--ink-soft);
  border-radius: 8px; font-size: 14px; font-weight: 600;
}
.tab-btn:hover { background: var(--bg-sunken); color: var(--ink); }
.tab-btn.active { background: var(--accent-soft); color: var(--accent); }
.who { display: flex; align-items: center; gap: 10px; }
.role-badge {
  font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em;
  padding: 5px 10px; border-radius: 999px; background: var(--bg-sunken); color: var(--ink-soft);
}
.btn-ghost {
  border: 1px solid var(--border); background: transparent; color: var(--ink-soft);
  padding: 7px 12px; border-radius: 8px; font-size: 13px;
}
.btn-ghost:hover { color: var(--ink); border-color: var(--ink-soft); }
.btn-icon {
  border: 1px solid var(--border); background: transparent; color: var(--ink-soft);
  width: 32px; height: 32px; border-radius: 8px; display: flex; align-items: center; justify-content: center;
}
.content { max-width: 920px; margin: 0 auto; padding: 32px 24px 80px; }

/* ---------- generic card / panel ---------- */
.panel {
  background: var(--bg-raised); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px 24px; margin-bottom: 20px;
}
.panel-title { font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft); margin-bottom: 14px; font-weight: 600; }

/* ---------- calculator ---------- */
.calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 800px) { .calc-grid { grid-template-columns: 1fr; } }
fieldset { border: none; padding: 0; margin: 0 0 18px; }
fieldset legend { font-size: 12px; font-weight: 600; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.04em; padding: 0 0 8px; }
.field { margin-bottom: 12px; }
.field label { display: block; font-size: 13px; margin-bottom: 4px; }
.field input {
  width: 100%; padding: 8px 10px; border-radius: 6px; border: 1px solid var(--border);
  background: var(--bg-sunken); color: var(--ink); font-family: var(--font-body); font-size: 14px;
  font-variant-numeric: tabular-nums;
}
.hint { font-size: 12px; color: var(--ink-soft); margin: 4px 0 0; }
.kpi-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 16px; }
.kpi { background: var(--bg-sunken); border-radius: 8px; padding: 14px; }
.kpi .l { font-size: 12px; color: var(--ink-soft); margin-bottom: 4px; }
.kpi .v { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; }
.kpi.good .v { color: var(--good); }
.kpi.bad .v { color: var(--bad); }
.kpi.big .v { font-size: 26px; }
.breakdown .r { display: flex; justify-content: space-between; padding: 7px 0; border-bottom: 1px solid var(--border); font-size: 14px; font-variant-numeric: tabular-nums; }
.breakdown .r.total { font-weight: 700; border-bottom: none; padding-top: 10px; }
.be-banner { background: var(--accent-soft); border-radius: 8px; padding: 16px; text-align: center; margin-bottom: 8px; }
.be-banner.bad { background: var(--bad-soft); }
.be-banner .n { font-family: var(--font-display); font-size: 30px; font-weight: 700; color: var(--accent); }
.be-banner.bad .n { color: var(--bad); font-size: 16px; }
.matrix-t { width: 100%; border-collapse: collapse; font-size: 13px; font-variant-numeric: tabular-nums; }
.matrix-t th, .matrix-t td { padding: 7px 9px; text-align: right; border-bottom: 1px solid var(--border); }
.matrix-t th:first-child, .matrix-t td:first-child { text-align: left; color: var(--ink-soft); }
.matrix-t td.cur { font-weight: 700; }
.matrix-t td.neg { color: var(--bad); }
.matrix-wrap { overflow-x: auto; }

.commit-row { display: flex; gap: 10px; margin-top: 16px; }
.commit-row input { flex: 1; padding: 9px 12px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg-sunken); color: var(--ink); }
.commit-row button { padding: 9px 16px; border-radius: 8px; border: none; background: var(--accent); color: var(--accent-ink); font-weight: 600; }
.status-note { font-size: 13px; margin-top: 8px; }
.status-note.ok { color: var(--good); }
.status-note.err { color: var(--bad); }

.version-item { border-bottom: 1px solid var(--border); padding: 12px 0; }
.version-item:last-child { border-bottom: none; }
.version-item .vh { display: flex; justify-content: space-between; font-size: 13px; color: var(--ink-soft); margin-bottom: 4px; }
.version-item .vnote { font-size: 14px; margin-bottom: 6px; }
.version-item .vfields { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 12px; color: var(--ink-soft); }

/* ---------- docs ---------- */
.doc-card { margin-bottom: 18px; }
.doc-head { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.doc-head h3 { margin: 0; }
.doc-body { font-size: 14.5px; }
.doc-body :is(h1, h2, h3) { font-family: var(--font-display); }
.doc-body h1 { font-size: 22px; } .doc-body h2 { font-size: 18px; } .doc-body h3 { font-size: 15px; }
.doc-body table { border-collapse: collapse; width: 100%; margin: 1em 0; font-size: 13.5px; }
.doc-body th, .doc-body td { border: 1px solid var(--border); padding: 6px 9px; text-align: left; }
.doc-body pre { background: var(--bg-sunken); padding: 12px; border-radius: 8px; overflow-x: auto; }
.doc-body blockquote { border-left: 3px solid var(--accent); margin: 1em 0; padding: 0.2em 0 0.2em 14px; color: var(--ink-soft); }
.lock-icon { width: 16px; height: 16px; flex: none; color: var(--ink-soft); }
.doc-locked .doc-head h3 { color: var(--ink-soft); }
.doc-locked .teaser { color: var(--ink-soft); font-style: italic; }

.sign-panel { margin-top: 8px; }
.sign-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 14px; }
.sign-row { display: flex; align-items: center; justify-content: space-between; font-size: 14px; padding: 8px 12px; background: var(--bg-sunken); border-radius: 8px; }
.sign-row .st { font-size: 12px; color: var(--ink-soft); }
.sign-row.signed .st { color: var(--good); }
.sign-btn { padding: 9px 16px; border-radius: 8px; border: none; background: var(--accent); color: var(--accent-ink); font-weight: 600; }
.sign-btn:disabled { opacity: 0.5; cursor: default; }
.all-signed-banner { background: var(--good-soft); color: var(--good); border-radius: 8px; padding: 12px 14px; font-weight: 600; font-size: 14px; margin-bottom: 14px; }

/* ---------- activity ---------- */
.activity-t { width: 100%; border-collapse: collapse; font-size: 13px; }
.activity-t th, .activity-t td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
.activity-t th { color: var(--ink-soft); font-weight: 600; font-size: 11px; text-transform: uppercase; letter-spacing: 0.04em; }
.activity-t td.role { font-weight: 600; }
.caveat { font-size: 12.5px; color: var(--ink-soft); margin-top: 10px; }