:root {
  --navy: #13213c;
  --navy-2: #1d2f52;
  --gold: #c9a227;
  --gold-soft: #f4e7bf;
  --bg: #f5f6f9;
  --card: #fff;
  --text: #1b2333;
  --muted: #6b7486;
  --ok: #1f8a4c;
  --warn: #b26a00;
  --err: #b42318;
  --line: #e3e6ee;
  /* IRANSansX families (@font-face in fonts.css) */
  --font-ui: "IRANSansX", Tahoma, "Segoe UI", sans-serif;
  --font-num: "IRANSansX FaNum", var(--font-ui);
  --font-label: "IRANSansX NoEn", var(--font-ui);
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--font-ui); font-weight: 400; line-height: 1.6;
}
/* Headings: standard variable font with the Dot4 design (DOTS axis 4) */
h1, h2, h3, h4 { font-family: var(--font-ui); font-weight: 700; font-variation-settings: "DOTS" 4; }
.container { max-width: 1000px; margin: 0 auto; padding: 0 16px 32px; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.error { color: var(--err); }
.warn { color: var(--warn); }
.ok { color: var(--ok); }
button {
  font: inherit; cursor: pointer; border: 1px solid var(--line); background: #fff;
  border-radius: 8px; padding: 6px 14px; color: var(--text);
}
button.primary { background: var(--gold); border-color: var(--gold); color: var(--navy); font-weight: 600; }
button:disabled { opacity: .5; cursor: not-allowed; }
button.ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.4); }
button.link { border: 0; background: none; color: var(--navy-2); text-decoration: underline; padding: 2px 0; font-size: .85rem; }
/* Form controls: standard font (unambiguous Latin for usernames, passwords, source ids, numbers) */
input, select {
  font: inherit; font-family: var(--font-ui); font-weight: 400; padding: 6px 10px; border: 1px solid var(--line); border-radius: 8px; background: #fff; min-width: 0;
}
input.short { width: 110px; } input.mid { width: 150px; }

/* top bar */
.topbar {
  background: var(--navy); color: #fff; display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px; gap: 8px; flex-wrap: wrap; border-bottom: 3px solid var(--gold);
}
.topbar h1 { margin: 0; font-size: 1.2rem; color: var(--gold-soft); }
.topbar-actions { display: flex; align-items: center; gap: 10px; }
.topbar a { color: #fff; }

.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: .8rem; font-family: var(--font-label); font-weight: 600; }
.badge.live { background: #d9f2e3; color: var(--ok); }
.badge.stale { background: #fff1d6; color: var(--warn); }
.badge.down { background: #fde3e1; color: var(--err); }
.badge.small { font-size: .7rem; padding: 0 6px; margin-inline-start: 6px; }

.hint { background: var(--gold-soft); border-radius: 10px; padding: 10px 14px; margin: 16px 0; font-size: .92rem; }
.notice { background: #fde3e1; color: var(--err); border-radius: 10px; padding: 10px 14px; }

/* board */
.group h2 { color: var(--navy); border-inline-start: 4px solid var(--gold); padding-inline-start: 10px; margin: 24px 0 10px; font-size: 1.1rem; }
.rows { background: var(--card); border-radius: 12px; overflow: hidden; box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.row { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 8px; padding: 12px 16px; border-bottom: 1px solid var(--line); align-items: center; }
.row:last-child { border-bottom: 0; }
.row.head { background: var(--navy-2); color: var(--gold-soft); font-family: var(--font-label); font-weight: 600; font-size: .9rem; }
.row .name { font-family: var(--font-label); font-weight: 700; }
.price .amount { font-family: var(--font-num); font-size: 1.15rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.price.na { color: var(--muted); font-size: .9rem; }
.price.is-stale .amount { color: var(--warn); }
.row .time, #checked { font-family: var(--font-num); }
.row .time { color: var(--muted); font-size: .85rem; }

@media (max-width: 640px) {
  .row.head { display: none; }
  .row { grid-template-columns: 1fr 1fr; }
  .row .name { grid-column: 1 / -1; color: var(--navy); }
  .row .time { grid-column: 1 / -1; }
  .row [data-label]::before { content: attr(data-label); display: block; font-size: .75rem; color: var(--muted); font-family: var(--font-label); font-weight: 400; }
}

/* login */
.login-page { display: grid; place-items: center; min-height: 100vh; background: var(--navy); }
.login-card { background: #fff; padding: 28px; border-radius: 14px; width: min(92vw, 380px); border-top: 4px solid var(--gold); }
.login-card h1 { margin: 0 0 4px; color: var(--navy); font-size: 1.3rem; }
.login-card label { display: block; margin: 12px 0; }
.login-card input { display: block; width: 100%; margin-top: 4px; }
.login-card button { width: 100%; margin-top: 8px; padding: 10px; }

/* admin */
.tabs { display: flex; gap: 6px; padding-top: 14px; }
.tab.active { background: var(--navy); color: #fff; border-color: var(--navy); }
.card { background: var(--card); border-radius: 12px; padding: 14px 16px; margin: 12px 0; box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.coin h3 { margin: 0 0 8px; color: var(--navy); }
.sides { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.side { border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }
.side-buy { border-top: 3px solid var(--ok); }
.side-sell { border-top: 3px solid var(--gold); }
.side-head { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.side-head h4 { margin: 0; }
.tab { font-family: var(--font-label); font-weight: 600; }
.status { font-size: .8rem; padding: 0 8px; border-radius: 999px; background: #eef0f5; font-family: var(--font-label); font-weight: 600; }
.st-ok { background: #d9f2e3; color: var(--ok); }
.st-stale, .st-invalid, .st-unavailable { background: #fff1d6; color: var(--warn); }
.cur { font-family: var(--font-num); font-weight: 700; margin-inline-start: auto; }
.grid { display: grid; gap: 8px; margin: 8px 0; }
.grid label { display: flex; flex-direction: column; gap: 3px; font-size: .85rem; color: var(--muted); font-family: var(--font-label); font-weight: 600; }
.grid label.check { flex-direction: row; align-items: center; gap: 6px; color: var(--text); }
.grid select, .grid input[type=text] { width: 100%; }
.pair { display: flex; gap: 6px; }
.actions { display: flex; gap: 8px; }
.preview { margin-top: 8px; font-size: .88rem; }
.preview .result { font-family: var(--font-num); font-weight: 700; color: var(--navy); }
.formula { font-family: Consolas, monospace; }
.inline-form { display: flex; gap: 8px; flex-wrap: wrap; }
.table { background: var(--card); border-radius: 12px; }
.user-row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; padding: 10px 14px; border-bottom: 1px solid var(--line); }
.uname { font-weight: 600; min-width: 120px; }
.kv { display: flex; justify-content: space-between; gap: 12px; padding: 4px 0; border-bottom: 1px dashed var(--line); }
@media (max-width: 760px) { .sides { grid-template-columns: 1fr; } }