:root {
  /* Dark gray theme */
  color-scheme: dark;
  --bg: #1f2125; --panel: #2a2d32; --ink: #e8e9eb; --muted: #9a9ea6; --line: #3a3e45;
  --brand: #7c9cf5; --brand-ink: #14161a; --good: #5cc79a; --warn: #f0b45c; --bad: #f28b82;
  --good-bg: #1f3a30; --warn-bg: #3d3220; --bad-bg: #3f2422; --chip: #363a41;
  --radius: 10px;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 14px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--brand); }
.shell { display: grid; grid-template-columns: 210px minmax(0, 1fr); min-height: 100vh; }
nav { background: var(--panel); border-right: 1px solid var(--line); padding: 18px 12px; display: flex; flex-direction: column; gap: 2px; }
nav .logo { font-weight: 700; font-size: 15px; padding: 4px 10px 16px; }
nav button { all: unset; cursor: pointer; padding: 8px 10px; border-radius: 8px; color: var(--muted); display: flex; justify-content: space-between; align-items: center; gap: 8px; white-space: nowrap; }
nav button.on, nav button:hover { background: var(--chip); color: var(--ink); }
nav .count { background: var(--brand); color: var(--brand-ink); border-radius: 99px; padding: 0 7px; font-size: 12px; line-height: 18px; flex: none; }
nav .spacer { flex: 1; }
main { padding: 24px 28px 60px; max-width: 1150px; width: 100%; min-width: 0; overflow-wrap: break-word; }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 15px; margin: 0 0 10px; }
.sub { color: var(--muted); margin: 0 0 20px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; overflow-x: auto; }
.grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); margin-bottom: 16px; }
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; }
.stat b { display: block; font-size: 24px; }
.stat span { color: var(--muted); font-size: 13px; }
.banner { border-radius: var(--radius); padding: 12px 14px; margin-bottom: 14px; }
.banner.warn { background: var(--warn-bg); color: var(--warn); }
.banner.bad { background: var(--bad-bg); color: var(--bad); }
.banner.good { background: var(--good-bg); color: var(--good); }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.between { justify-content: space-between; }
button.btn, .btn { font: inherit; border: 1px solid var(--line); background: var(--panel); color: var(--ink); padding: 7px 13px; border-radius: 8px; cursor: pointer; }
.btn.primary { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }
.btn.danger { color: var(--bad); }
.btn.small { padding: 3px 9px; font-size: 13px; }
.btn:disabled { opacity: .5; cursor: default; }
input, textarea, select { font: inherit; color: var(--ink); background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px; width: 100%; }
textarea { min-height: 90px; resize: vertical; }
label { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 4px; }
.form2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
.chip { display: inline-block; padding: 1px 8px; border-radius: 99px; background: var(--chip); font-size: 12px; white-space: nowrap; }
.chip.good { background: var(--good-bg); color: var(--good); }
.chip.warn { background: var(--warn-bg); color: var(--warn); }
.chip.bad { background: var(--bad-bg); color: var(--bad); }
.muted { color: var(--muted); }
.mail { white-space: pre-wrap; background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; font-size: 13px; }
.msg { border-left: 3px solid var(--line); padding: 4px 0 4px 12px; margin: 12px 0; }
.msg.in { border-color: var(--brand); }
.bar { height: 6px; background: var(--chip); border-radius: 99px; overflow: hidden; margin-top: 6px; }
.bar i { display: block; height: 100%; background: var(--brand); }
.step { border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; margin-bottom: 10px; }
.toast { position: fixed; bottom: 18px; right: 18px; left: auto; z-index: 10; background: var(--ink); color: var(--panel); padding: 10px 14px; border-radius: 8px; max-width: 360px; }
.login { max-width: 340px; margin: 18vh auto; }
.switch { display: inline-flex; gap: 6px; align-items: center; cursor: pointer; }
.switch input { width: auto; }
@media (max-width: 760px) {
  .shell { grid-template-columns: minmax(0, 1fr); }
  nav { flex-direction: row; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--line); padding: 8px; }
  nav .logo, nav .spacer { display: none; }
  main { padding: 16px; }
  .form2 { grid-template-columns: 1fr; }
  .hide-sm { display: none; }
  .toast { left: 16px; right: 16px; max-width: none; }
}