eth_hedge_sim/frontend/src/styles/app.css

:root {
  --bg: #0b0e11;
  --bg-elev: #12161c;
  --bg-panel: #151a21;
  --line: #1e2630;
  --text: #eaecef;
  --muted: #848e9c;
  --accent: #f0b90b;
  --up: #0ecb81;
  --down: #f6465d;
  --input: #0f141a;
  --danger: #f6465d;
  font-family: "IBM Plex Sans", sans-serif;
  color: var(--text);
  background: var(--bg);
}

* {
  box-sizing: border-box;
}

html,
body,
#root {
  margin: 0;
  min-height: 100%;
}

body {
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(240, 185, 11, 0.08), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(14, 203, 129, 0.05), transparent 50%),
    var(--bg);
}

button,
input {
  font: inherit;
}

.mono {
  font-family: "IBM Plex Mono", monospace;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr;
}

.topnav {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 14, 17, 0.92);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topnav-side {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.topnav-side.right {
  justify-content: flex-end;
}

.topnav-center {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.brand {
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--accent);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topnav a {
  color: var(--muted);
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 6px;
  white-space: nowrap;
}

.topnav a.active {
  color: var(--text);
  background: var(--bg-panel);
}

.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0;
}

.tab {
  background: transparent;
  border: 0;
  color: var(--muted);
  padding: 10px 14px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.tab.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

.status-running {
  color: #0ecb81 !important;
  font-weight: 700;
}

.status-stopped {
  color: var(--muted) !important;
}

.topnav .spacer {
  flex: 1;
}

.topnav .meta {
  color: var(--muted);
  font-size: 12px;
  margin-right: 8px;
}

.page {
  padding: 16px;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.card {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 800px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

.kv {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.kv:last-child {
  border-bottom: 0;
}

.kv span:first-child {
  color: var(--muted);
}

.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-box {
  width: min(420px, 100%);
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px 24px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.login-box h1 {
  margin: 0 0 6px;
  font-size: 22px;
}

.login-box p {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 13px;
}

.field {
  display: grid;
  gap: 6px;
  margin-bottom: 14px;
}

.field label {
  font-size: 12px;
  color: var(--muted);
}

.field input {
  background: var(--input);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 8px;
  padding: 10px 12px;
  outline: none;
}

.field input:focus {
  border-color: rgba(240, 185, 11, 0.55);
}

.btn {
  border: 0;
  border-radius: 8px;
  padding: 10px 14px;
  cursor: pointer;
  background: var(--accent);
  color: #111;
  font-weight: 600;
}

.btn.ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
}

.btn.block {
  width: 100%;
}

.err {
  color: var(--danger);
  font-size: 13px;
  margin: 0 0 12px;
}

.hint {
  margin-top: 12px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  border: 1px solid var(--line);
  color: var(--muted);
}

.tag.up {
  color: var(--up);
  border-color: rgba(14, 203, 129, 0.35);
}

.tag.down {
  color: var(--down);
  border-color: rgba(246, 70, 93, 0.35);
}

/* OKX-style position cards (copied/adapted from crypto_monitor instance_page) */
.pos-embed-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

@media (max-width: 800px) {
  .pos-embed-grid {
    grid-template-columns: 1fr;
  }
}

.pos-card {
  background: #141923;
  border: 1px solid #2a3348;
  border-radius: 10px;
  padding: 12px 14px;
}

.pos-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.pos-card-symbol {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  min-width: 0;
}

.pos-card-symbol strong {
  font-size: 0.95rem;
  color: #fff;
  font-weight: 600;
  word-break: break-all;
}

.pos-side-badge {
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 500;
  line-height: 1.2;
}

.pos-side-long {
  background: #253a6e;
  color: #6eb5ff;
}

.pos-side-short {
  background: #4a2230;
  color: #ff8a8a;
}

.pos-meta {
  font-size: 0.74rem;
  color: #8b95a8;
  line-height: 1.45;
  margin-bottom: 12px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 0;
}

.pos-meta-item {
  display: inline-flex;
  align-items: center;
}

.pos-meta-item:not(:last-child)::after {
  content: "|";
  margin: 0 8px;
  color: #3d4659;
}

.pos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px 14px;
}

@media (max-width: 520px) {
  .pos-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.pos-cell {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.pos-label {
  font-size: 0.72rem;
  color: #7d8799;
}

.pos-value {
  font-size: 0.88rem;
  color: #e8ecf4;
  font-weight: 500;
  line-height: 1.25;
}

.pos-empty {
  padding: 18px;
  text-align: center;
  color: #8892b0;
  font-size: 0.85rem;
  background: #141923;
  border: 1px dashed #2a3348;
  border-radius: 10px;
}

.pos-pnl-profit {
  color: #7ee787 !important;
}

.pos-pnl-loss {
  color: #ff8b8b !important;
}