/* Nexus — internal trading administration UI.
   Dark by default: this is an operations console that gets stared at for
   hours, and a bright screen at 3am is a usability problem. */

:root {
  --bg:            #0b0e14;
  --bg-elev:       #121722;
  --bg-elev-2:     #171d2a;
  --border:        #232b3b;
  --border-strong: #313c52;

  --text:          #e6eaf2;
  --text-dim:      #94a0b8;
  --text-faint:    #64708a;

  --accent:        #4da3ff;
  --accent-dim:    #1d4e80;

  --green:         #2ecc8f;
  --green-dim:     #14523a;
  --red:           #ff5c6c;
  --red-dim:       #5c1f27;
  --amber:         #ffb648;
  --amber-dim:     #5c4118;

  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --radius: 8px;
  --gutter: 16px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

/* ── Layout ───────────────────────────────────────────────────────────── */

.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: var(--gutter);
  padding: 10px var(--gutter);
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.brand {
  font-weight: 700; font-size: 16px; letter-spacing: 0.06em;
  color: var(--text); text-transform: uppercase;
}
.brand span { color: var(--accent); }

.nav { display: flex; gap: 2px; flex-wrap: wrap; flex: 1; }
.nav a {
  padding: 6px 11px; border-radius: 6px; color: var(--text-dim);
  font-size: 13px; white-space: nowrap;
}
.nav a:hover { background: var(--bg-elev-2); color: var(--text); text-decoration: none; }
.nav a.active { background: var(--accent-dim); color: #fff; }

.topbar-right { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

main { padding: var(--gutter); max-width: 1600px; margin: 0 auto; }

h1 { font-size: 20px; margin: 0 0 4px; font-weight: 600; }
h2 { font-size: 15px; margin: 0 0 12px; font-weight: 600; color: var(--text); }
.subtitle { color: var(--text-dim); font-size: 13px; margin: 0 0 20px; }

/* ── Badges ───────────────────────────────────────────────────────────── */

.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 9px; border-radius: 999px;
  font-size: 11px; font-weight: 600; letter-spacing: 0.04em;
  text-transform: uppercase; white-space: nowrap;
  border: 1px solid transparent;
}
.badge-green  { background: var(--green-dim); color: var(--green); border-color: #1d6b4d; }
.badge-red    { background: var(--red-dim);   color: var(--red);   border-color: #7a2a34; }
.badge-amber  { background: var(--amber-dim); color: var(--amber); border-color: #7a5620; }
.badge-grey   { background: var(--bg-elev-2); color: var(--text-dim); border-color: var(--border); }
.badge-blue   { background: var(--accent-dim); color: #cfe4ff; border-color: #2a6299; }

.dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }

/* The single most important indicator on the page. */
.trading-flag { font-size: 12px; padding: 5px 12px; }

/* ── Cards & grid ─────────────────────────────────────────────────────── */

.grid { display: grid; gap: var(--gutter); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}
.card-header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px; margin-bottom: 12px; flex-wrap: wrap;
}
.card-header h2 { margin: 0; }

/* ── Stats ────────────────────────────────────────────────────────────── */

.stat { display: flex; flex-direction: column; gap: 3px; }
.stat-label {
  font-size: 11px; color: var(--text-faint);
  text-transform: uppercase; letter-spacing: 0.06em;
}
.stat-value { font-family: var(--mono); font-size: 20px; font-weight: 600; }
.stat-value.sm { font-size: 15px; }

.kv { display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; font-size: 13px; }
.kv dt { color: var(--text-dim); }
.kv dd { margin: 0; font-family: var(--mono); text-align: right; }

/* ── Tables ───────────────────────────────────────────────────────────── */

.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th {
  text-align: left; padding: 8px 10px;
  font-size: 11px; font-weight: 600; letter-spacing: 0.05em;
  color: var(--text-faint); text-transform: uppercase;
  border-bottom: 1px solid var(--border); white-space: nowrap;
}
td {
  padding: 9px 10px; border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
tbody tr:hover { background: var(--bg-elev-2); }
td.num, th.num { text-align: right; font-family: var(--mono); }
td.wrap { white-space: normal; min-width: 200px; }

.pos { color: var(--green); }
.neg { color: var(--red); }
.muted { color: var(--text-faint); }
.mono { font-family: var(--mono); }

.empty { padding: 28px; text-align: center; color: var(--text-faint); font-size: 13px; }

/* ── Forms ────────────────────────────────────────────────────────────── */

label { display: block; font-size: 12px; color: var(--text-dim); margin-bottom: 4px; }

input, select, textarea {
  width: 100%; padding: 8px 10px;
  background: var(--bg); color: var(--text);
  border: 1px solid var(--border-strong); border-radius: 6px;
  font-family: var(--mono); font-size: 13px;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--accent);
}
input::placeholder { color: var(--text-faint); }

.field { margin-bottom: 12px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.checkbox { display: flex; align-items: center; gap: 8px; }
.checkbox input { width: auto; }
.checkbox label { margin: 0; }

/* ── Buttons ──────────────────────────────────────────────────────────── */

button, .btn {
  padding: 8px 14px; border-radius: 6px; cursor: pointer;
  font-size: 13px; font-weight: 600; font-family: var(--sans);
  border: 1px solid var(--border-strong);
  background: var(--bg-elev-2); color: var(--text);
  transition: filter .12s ease;
}
button:hover:not(:disabled), .btn:hover { filter: brightness(1.25); text-decoration: none; }
button:disabled { opacity: .45; cursor: not-allowed; }

.btn-primary { background: var(--accent-dim); border-color: #2a6299; color: #fff; }
.btn-green   { background: var(--green-dim);  border-color: #1d6b4d; color: var(--green); }
.btn-red     { background: var(--red-dim);    border-color: #7a2a34; color: var(--red); }
.btn-amber   { background: var(--amber-dim);  border-color: #7a5620; color: var(--amber); }
.btn-sm      { padding: 4px 9px; font-size: 12px; }
.btn-block   { width: 100%; }

.btn-group { display: flex; gap: 6px; flex-wrap: wrap; }

/* ── Modal ────────────────────────────────────────────────────────────── */

.modal-backdrop {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(0,0,0,.72);
  display: flex; align-items: center; justify-content: center;
  padding: var(--gutter);
}
.modal {
  background: var(--bg-elev); border: 1px solid var(--border-strong);
  border-radius: var(--radius); width: 100%; max-width: 520px;
  max-height: 88vh; overflow-y: auto;
}
.modal-head {
  padding: 14px 16px; border-bottom: 1px solid var(--border);
  font-weight: 600; display: flex; justify-content: space-between; align-items: center;
}
.modal-body { padding: 16px; }
.modal-foot {
  padding: 12px 16px; border-top: 1px solid var(--border);
  display: flex; gap: 8px; justify-content: flex-end; flex-wrap: wrap;
}

/* Order preview: monospace block so the numbers line up for checking. */
.preview {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 6px; padding: 12px;
  font-family: var(--mono); font-size: 12.5px;
  white-space: pre-wrap; word-break: break-word;
}

/* ── Alerts ───────────────────────────────────────────────────────────── */

.alert {
  padding: 10px 12px; border-radius: 6px; font-size: 13px;
  margin-bottom: 12px; border: 1px solid transparent;
}
.alert-error { background: var(--red-dim);   color: #ffd3d8; border-color: #7a2a34; }
.alert-warn  { background: var(--amber-dim); color: #ffe6bf; border-color: #7a5620; }
.alert-ok    { background: var(--green-dim); color: #c6f5e2; border-color: #1d6b4d; }
.alert-info  { background: var(--accent-dim); color: #d6e9ff; border-color: #2a6299; }

/* ── Toast ────────────────────────────────────────────────────────────── */

#toasts {
  position: fixed; bottom: 16px; right: 16px; z-index: 200;
  display: flex; flex-direction: column; gap: 8px; max-width: min(420px, calc(100vw - 32px));
}
.toast {
  padding: 11px 14px; border-radius: 6px; font-size: 13px;
  border: 1px solid var(--border-strong); background: var(--bg-elev-2);
  box-shadow: 0 8px 28px rgba(0,0,0,.55);
  animation: slidein .16s ease;
}
.toast.ok    { border-color: #1d6b4d; background: var(--green-dim); color: #c6f5e2; }
.toast.error { border-color: #7a2a34; background: var(--red-dim);   color: #ffd3d8; }
.toast.warn  { border-color: #7a5620; background: var(--amber-dim); color: #ffe6bf; }
@keyframes slidein { from { opacity: 0; transform: translateX(16px); } }

/* ── Login ────────────────────────────────────────────────────────────── */

.login-wrap {
  min-height: 100vh; display: flex; align-items: center;
  justify-content: center; padding: var(--gutter);
}
.login-card {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px; width: 100%; max-width: 380px;
}
.login-card .brand { font-size: 22px; display: block; margin-bottom: 4px; }

/* ── Search ───────────────────────────────────────────────────────────── */

.toolbar {
  display: flex; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; align-items: flex-end;
}
.toolbar .field { margin: 0; min-width: 160px; flex: 1; }
.toolbar .field.narrow { flex: 0 0 150px; }

.pagination {
  display: flex; gap: 8px; align-items: center; justify-content: center;
  margin-top: 14px; font-size: 13px; color: var(--text-dim);
}

.spinner {
  display: inline-block; width: 13px; height: 13px;
  border: 2px solid var(--border-strong); border-top-color: var(--accent);
  border-radius: 50%; animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Responsive ───────────────────────────────────────────────────────── */

@media (max-width: 720px) {
  .topbar { gap: 8px; }
  .nav { order: 3; width: 100%; }
  .field-row { grid-template-columns: 1fr; }
  .stat-value { font-size: 17px; }
  main { padding: 12px; }
}