:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-2: #f0f2f5;
  --border: #dfe3e8;
  --text: #1a1d21;
  --muted: #626b76;
  --accent: #1f5f8b;
  --accent-soft: #e8f1f8;
  --good: #1a7f4b;
  --warn: #a06400;
  --bad: #b3261e;
  --radius: 8px;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171a;
    --surface: #1c2024;
    --surface-2: #23282d;
    --border: #333a41;
    --text: #e8eaed;
    --muted: #9aa4b0;
    --accent: #6cb2e0;
    --accent-soft: #1b2c38;
    --good: #4cc38a;
    --warn: #e0a458;
    --bad: #f2777a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- layout ---------- */

header.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 24px;
  height: 56px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand { font-weight: 650; letter-spacing: -0.01em; white-space: nowrap; }
.brand span { color: var(--accent); }

nav.main { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
nav.main a {
  padding: 6px 11px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 14px;
}
nav.main a:hover { background: var(--surface-2); text-decoration: none; }
nav.main a.active { background: var(--accent-soft); color: var(--accent); font-weight: 550; }

.who { color: var(--muted); font-size: 13px; white-space: nowrap; }

main { max-width: 1080px; margin: 0 auto; padding: 26px 20px 70px; }

.page-head { margin-bottom: 22px; }
.page-head h1 { margin: 0 0 5px; font-size: 22px; letter-spacing: -0.02em; }
.page-head p { margin: 0; color: var(--muted); font-size: 14px; max-width: 70ch; }

/* ---------- cards ---------- */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 16px;
}
.card h2 { margin: 0 0 4px; font-size: 15px; letter-spacing: -0.01em; }
.card .sub { color: var(--muted); font-size: 13px; margin: 0 0 14px; max-width: 72ch; }

.grid { display: grid; gap: 14px; }
.grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid.cols-4 { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }

/* ---------- stats ---------- */

.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.stat .label { color: var(--muted); font-size: 12px; text-transform: uppercase;
  letter-spacing: 0.05em; }
.stat .value { font-size: 24px; font-weight: 600; margin-top: 5px; letter-spacing: -0.02em; }
.stat .delta { font-size: 13px; margin-top: 3px; color: var(--muted); }
.delta.up { color: var(--good); }
.delta.down { color: var(--bad); }

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

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 550; font-size: 12px; text-transform: uppercase;
  letter-spacing: 0.04em; }
tbody tr:last-child td { border-bottom: none; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

.table-scroll { overflow-x: auto; }

/* ---------- forms ---------- */

label.field { display: block; margin-bottom: 16px; }
label.field > .name { display: block; font-weight: 550; font-size: 14px; margin-bottom: 3px; }
label.field > .help { display: block; color: var(--muted); font-size: 13px;
  margin-bottom: 7px; max-width: 72ch; }

input[type=text], input[type=password], input[type=number], input[type=date],
textarea, select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}
textarea { min-height: 88px; resize: vertical; font-family: inherit; }
input:focus, textarea:focus, select:focus {
  outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent;
}

.checkbox { display: flex; align-items: center; gap: 9px; margin-bottom: 16px; }
.checkbox input { width: 16px; height: 16px; }

button, .btn {
  display: inline-block;
  padding: 8px 15px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  font: inherit;
  font-weight: 550;
  cursor: pointer;
}
button:hover, .btn:hover { border-color: var(--accent); text-decoration: none; }
button.primary, .btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.danger { color: var(--bad); border-color: var(--bad); background: transparent; }
button:disabled { opacity: 0.55; cursor: not-allowed; }

.actions { display: flex; gap: 9px; flex-wrap: wrap; align-items: center; margin-top: 6px; }

/* ---------- notices ---------- */

.notice {
  padding: 11px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 16px;
  font-size: 14px;
}
.notice.ok { background: color-mix(in srgb, var(--good) 12%, transparent); border-color: var(--good); }
.notice.warn { background: color-mix(in srgb, var(--warn) 14%, transparent); border-color: var(--warn); }
.notice.bad { background: color-mix(in srgb, var(--bad) 12%, transparent); border-color: var(--bad); }
.notice.info { background: var(--accent-soft); border-color: var(--accent); }

/* ---------- pills ---------- */

.pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid var(--border);
}
.pill.high { color: var(--bad); border-color: var(--bad); }
.pill.medium { color: var(--warn); border-color: var(--warn); }
.pill.low { color: var(--muted); }
.pill.ok { color: var(--good); border-color: var(--good); }
.pill.info { color: var(--accent); border-color: var(--accent); }

/* ---------- tabs ---------- */

.tabs { display: flex; gap: 3px; border-bottom: 1px solid var(--border);
  margin-bottom: 20px; overflow-x: auto; }
.tabs a {
  padding: 9px 14px;
  color: var(--muted);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  font-size: 14px;
}
.tabs a:hover { color: var(--text); text-decoration: none; }
.tabs a.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }

/* ---------- auth screens ---------- */

.auth-wrap { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.auth-card { width: 100%; max-width: 420px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 12px; padding: 30px; }
.auth-card h1 { margin: 0 0 6px; font-size: 20px; letter-spacing: -0.02em; }
.auth-card .sub { color: var(--muted); font-size: 14px; margin: 0 0 22px; }

/* ---------- 2FA ---------- */

.qr-block {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  align-items: flex-start;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 16px;
}
.qr-block .qr {
  background: #fff;
  padding: 10px;
  border-radius: 6px;
  line-height: 0;
  flex-shrink: 0;
}
.qr-block .qr svg { display: block; width: 168px; height: 168px; }
.qr-steps { flex: 1; min-width: 240px; }
.qr-steps ol { margin: 0 0 12px; padding-left: 20px; }
.qr-steps li { margin-bottom: 6px; font-size: 14px; }

code.secret {
  font-family: var(--mono);
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 4px 8px;
  border-radius: 5px;
  font-size: 13px;
  word-break: break-all;
  user-select: all;
}

.code-input {
  font-family: var(--mono);
  font-size: 22px;
  letter-spacing: 0.28em;
  text-align: center;
  padding: 11px;
}

.recovery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 8px;
  margin: 12px 0;
}
.recovery-grid code {
  font-family: var(--mono);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 7px 9px;
  font-size: 14px;
  text-align: center;
  user-select: all;
}

/* ---------- misc ---------- */

.muted { color: var(--muted); }
.small { font-size: 13px; }
.mono { font-family: var(--mono); font-size: 13px; }
.right { text-align: right; }
.spread { display: flex; justify-content: space-between; align-items: center; gap: 14px;
  flex-wrap: wrap; }

pre.result {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 12.5px;
  margin: 12px 0 0;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 340px;
  overflow-y: auto;
}

.prose { max-width: 76ch; }
.prose h1 { font-size: 21px; margin: 26px 0 10px; letter-spacing: -0.02em; }
.prose h2 { font-size: 17px; margin: 26px 0 9px; letter-spacing: -0.01em; }
.prose h3 { font-size: 15px; margin: 20px 0 7px; }
.prose h1:first-child, .prose h2:first-child { margin-top: 0; }
.prose p, .prose li { line-height: 1.65; }
.prose ul, .prose ol { padding-left: 22px; }
.prose li { margin-bottom: 6px; }
.prose strong { font-weight: 650; }
.prose hr { border: none; border-top: 1px solid var(--border); margin: 22px 0; }
.prose code { font-family: var(--mono); background: var(--surface-2);
  padding: 1px 5px; border-radius: 4px; font-size: 13px; }
.prose blockquote { margin: 14px 0; padding-left: 14px;
  border-left: 3px solid var(--border); color: var(--muted); }

.empty { text-align: center; padding: 40px 20px; color: var(--muted); }
.empty p { max-width: 52ch; margin: 0 auto 14px; }

footer.foot { text-align: center; color: var(--muted); font-size: 12px; padding: 20px; }