:root {
  --canvas: #f5f5f7;
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --line: rgba(0, 0, 0, 0.08);
  --card: #ffffff;
  --ok: #1f7a4d;
  --warn: #9a6700;
  --bad: #b42318;
  --focus: #0071e3;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--canvas);
  color: var(--ink);
  font-family: "Vazirmatn", Tahoma, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.75;
}

.wrap {
  max-width: 52rem;
  margin: 0 auto;
  padding: 28px 20px 48px;
}

.brand {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

h1 {
  margin: 4px 0 8px;
  font-size: 28px;
  font-weight: 650;
}

.lede {
  margin: 0 0 24px;
  color: var(--muted);
}

.card {
  background: var(--card);
  border: 0.5px solid var(--line);
  border-radius: 14px;
  padding: 16px 18px;
  margin-bottom: 16px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th, td {
  text-align: right;
  padding: 10px 6px;
  border-bottom: 0.5px solid var(--line);
  vertical-align: top;
}

th {
  color: var(--muted);
  font-weight: 500;
}

code, .ltr {
  direction: ltr;
  unicode-bidi: isolate;
  font-family: ui-monospace, Consolas, monospace;
  font-size: 13px;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  background: #eee;
}

.badge-ok { background: #e8f6ee; color: var(--ok); }
.badge-warn { background: #fff4d6; color: var(--warn); }
.badge-bad { background: #fde8e6; color: var(--bad); }

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0 0 20px;
}

.nav a {
  color: var(--focus);
  text-decoration: none;
}

label {
  display: block;
  margin-top: 12px;
}

input {
  width: 100%;
  margin-top: 4px;
  padding: 10px 12px;
  border: 0.5px solid var(--line);
  border-radius: 10px;
  font: inherit;
}

button, .btn {
  display: inline-block;
  margin-top: 16px;
  padding: 10px 16px;
  border: 0;
  border-radius: 10px;
  background: var(--ink);
  color: #fff;
  font: inherit;
  cursor: pointer;
}

.err { color: var(--bad); }

@media (max-width: 720px) {
  h1 { font-size: 24px; }
  table { font-size: 13px; }
}