:root {
  --bg: #f4f6fb;
  --surface: #ffffff;
  --surface-2: #f0f2f8;
  --border: #e2e6ef;
  --text: #141a2b;
  --muted: #69728a;
  --primary: #3b5bfd;
  --primary-ink: #ffffff;
  --primary-soft: #e8ecff;
  --success: #12a66b;
  --danger: #e0444c;
  --warning: #d98a06;
  --sidebar: #0f1530;
  --sidebar-text: #c7cde3;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 4px 16px rgba(16, 24, 40, .05);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0f1d;
    --surface: #141a2d;
    --surface-2: #1b2238;
    --border: #262f4a;
    --text: #e8ebf5;
    --muted: #8b94ad;
    --primary: #6a84ff;
    --primary-soft: #1f2a52;
    --sidebar: #090c18;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font: 15px/1.5 Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}
a { color: var(--primary); text-decoration: none; }
h1 { font-size: 24px; margin: 0 0 20px; }
h2 { font-size: 18px; margin: 0 0 14px; }
h3 { font-size: 15px; margin: 0 0 10px; }
code, .mono { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 13px; }
pre { background: var(--surface-2); padding: 14px; border-radius: 10px; overflow-x: auto; font-size: 13px; margin: 0; }

/* Layout */
.layout { display: grid; grid-template-columns: 240px minmax(0, 1fr); min-height: 100vh; }
.sidebar { background: var(--sidebar); color: var(--sidebar-text); padding: 22px 14px; display: flex; flex-direction: column; gap: 4px; }
.logo { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; font-size: 20px; padding: 0 10px 22px; }
.logo-mark { width: 32px; height: 32px; border-radius: 9px; background: linear-gradient(135deg, #3b5bfd, #22c1c3); display: grid; place-items: center; font-size: 16px; }
.nav a { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 10px; color: var(--sidebar-text); }
.nav a:hover { background: rgba(255, 255, 255, .06); color: #fff; }
.nav a.active { background: rgba(106, 132, 255, .18); color: #fff; }
.nav .ico { width: 20px; text-align: center; }
.sidebar .spacer { flex: 1; }
.account-box { padding: 12px; border-radius: 10px; background: rgba(255, 255, 255, .05); font-size: 13px; }
.account-box b { color: #fff; display: block; }
.main { padding: 28px 32px; max-width: 1180px; width: 100%; }
.topbar { display: none; }

/* Cards */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-wide { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); }
/* Широкое содержимое (таблицы) прокручивается внутри карточки, а не растягивает страницу */
.grid > *, .stack > * { min-width: 0; }
.balances { grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); }
.stack { display: flex; flex-direction: column; gap: 16px; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.between { justify-content: space-between; }
.mt { margin-top: 16px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

.hero { background: linear-gradient(135deg, #3b5bfd, #2a3fb8 60%, #1e2d86); color: #fff; border: 0; }
.hero .muted { color: rgba(255, 255, 255, .75); }
.hero .big { font-size: 34px; font-weight: 700; letter-spacing: -.5px; }
.bal-card .cur { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 13px; }
.bal-card .sym { width: 34px; height: 34px; border-radius: 50%; background: var(--primary-soft); color: var(--primary); display: grid; place-items: center; font-weight: 700; }
.bal-card .amt { font-size: 22px; font-weight: 650; margin-top: 10px; word-break: break-all; }
.wallets { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.wallet-card { box-shadow: none; }
.wallet-total { font-weight: 650; white-space: nowrap; }
.wallet-bals { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 10px; }
/* Биржа */
.up { color: var(--success); }
.down { color: var(--danger); }
.market-tabs { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 2px; }
.market-tabs a { display: flex; flex-direction: column; gap: 2px; min-width: 130px; padding: 10px 14px; border-radius: 12px; background: var(--surface); border: 1px solid var(--border); color: var(--text); font-size: 13px; }
.market-tabs a.active { border-color: var(--primary); box-shadow: 0 0 0 1px var(--primary); }
.trade-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr); gap: 16px; align-items: start; }
.lvl { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 6px; padding: 3px 6px; position: relative; }
.lvl > span:not(:first-child) { text-align: right; }
.lvl.head { font-size: 11px; text-transform: uppercase; letter-spacing: .04em; }
.lvl.ask, .lvl.bid { cursor: pointer; }
.lvl.ask::before, .lvl.bid::before { content: ''; position: absolute; inset: 0 0 0 auto; width: var(--d); opacity: .12; border-radius: 4px; }
.lvl.ask::before { background: var(--danger); }
.lvl.bid::before { background: var(--success); }
.lvl.ask > span:first-child { color: var(--danger); }
.lvl.bid > span:first-child { color: var(--success); }
.lvl:hover { background: var(--surface-2); }
.spread { padding: 8px 6px; margin: 4px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); font-size: 15px; }
.side-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.side-tabs button { font: inherit; font-weight: 600; padding: 9px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface-2); color: var(--muted); cursor: pointer; }
.side-tabs button[data-side=buy].active { background: var(--success); border-color: var(--success); color: #fff; }
.side-tabs button[data-side=sell].active { background: var(--danger); border-color: var(--danger); color: #fff; }
.pct { gap: 6px; }
.pct .btn { flex: 1; padding: 5px 0; }
label[hidden] { display: none; }
@media (max-width: 1100px) { .trade-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 700px) { .trade-grid { grid-template-columns: 1fr; } }
.stat .label { color: var(--muted); font-size: 13px; }
.stat .value { font-size: 24px; font-weight: 700; }

/* Forms */
form { display: flex; flex-direction: column; gap: 14px; }
label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); font-weight: 500; }
input, select, textarea {
  font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 10px 12px; width: 100%;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--primary-soft); border-color: var(--primary); }
.btn {
  font: inherit; font-weight: 600; border: 1px solid transparent; border-radius: 10px; padding: 10px 18px;
  background: var(--primary); color: var(--primary-ink); cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 8px;
}
.btn:hover { filter: brightness(1.08); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn.ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn.success { background: var(--success); }
.btn.danger { background: var(--danger); }
.btn.sm { padding: 6px 12px; font-size: 13px; }
.hero .btn.ghost { color: #fff; border-color: rgba(255, 255, 255, .35); }

.quote { background: var(--surface-2); border-radius: 10px; padding: 12px 14px; font-size: 14px; }
.alert { padding: 12px 14px; border-radius: 10px; font-size: 14px; }
.alert.error { background: rgba(224, 68, 76, .12); color: var(--danger); }
.alert.ok { background: rgba(18, 166, 107, .12); color: var(--success); }
.alert.info { background: var(--primary-soft); color: var(--primary); }

/* Tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font-weight: 600; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; padding: 10px 12px; border-bottom: 1px solid var(--border); }
td { padding: 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
tr:last-child td { border-bottom: 0; }
.pos { color: var(--success); font-weight: 600; }
.neg { color: var(--text); font-weight: 600; }
.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--surface-2); color: var(--muted); }
.badge.completed, .badge.paid { background: rgba(18, 166, 107, .14); color: var(--success); }
.badge.pending { background: rgba(217, 138, 6, .15); color: var(--warning); }
.badge.rejected, .badge.cancelled, .badge.expired, .badge.blocked { background: rgba(224, 68, 76, .13); color: var(--danger); }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 18px; overflow-x: auto; }
.tabs a { padding: 10px 14px; color: var(--muted); border-bottom: 2px solid transparent; white-space: nowrap; }
.tabs a.active { color: var(--primary); border-color: var(--primary); }

.empty { text-align: center; color: var(--muted); padding: 30px 10px; }
.secret { filter: blur(5px); cursor: pointer; user-select: none; }

/* Auth */
.auth { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.auth .card { width: 100%; max-width: 420px; padding: 32px; }
.auth .logo { color: var(--text); padding: 0 0 18px; justify-content: center; }

.toast { position: fixed; right: 20px; bottom: 20px; z-index: 50; max-width: 360px; box-shadow: 0 8px 30px rgba(0, 0, 0, .18); }

@media (max-width: 900px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
  .sidebar { display: none; position: fixed; inset: 0 30% 0 0; z-index: 40; }
  .sidebar.open { display: flex; }
  .topbar { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; background: var(--sidebar); color: #fff; }
  .topbar .logo { padding: 0; font-size: 18px; }
  .main { padding: 20px 16px; }
  .grid-2, .grid-3, .grid-wide { grid-template-columns: 1fr; }
}