:root {
  --bg: #0f1419;
  --card: #1a2332;
  --text: #e7ecf3;
  --muted: #8b9cb3;
  --green: #3dd68c;
  --red: #f07178;
  --blue: #59c2ff;
  --amber: #ffcc66;
  --border: #2a3548;
}

* { box-sizing: border-box; }

body {
  font-family: Inter, system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0;
  padding: 1.5rem;
  line-height: 1.5;
}

.hidden { display: none !important; }

.auth-screen {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  max-width: 400px;
  width: 100%;
}

.auth-card input {
  width: 100%;
  margin: 0.5rem 0;
  padding: 0.6rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0f1419;
  color: var(--text);
}

.btn {
  padding: 0.5rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #243044;
  color: var(--text);
  cursor: pointer;
  margin-right: 0.5rem;
}

.btn-primary { background: #1e4a6e; border-color: var(--blue); color: var(--blue); }

.msg { font-size: 0.85rem; margin-top: 0.75rem; }
.msg--error { color: var(--red); }

header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1rem;
}

h1 { font-size: 1.5rem; margin: 0; }
.sub { color: var(--muted); font-size: 0.9rem; }

.grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

@media (min-width: 900px) {
  .grid { grid-template-columns: 1fr 1fr; }
  .full-width { grid-column: 1 / -1; }
}

section {
  background: var(--card);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border);
}

h2 { font-size: 1rem; margin: 0 0 0.75rem; color: var(--blue); }

table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
th, td { text-align: left; padding: 0.4rem 0.35rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; }

.badge {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
}

.buy { background: #1a3d2e; color: var(--green); }
.sell { background: #3d1a1f; color: var(--red); }
.opp { background: #3d351a; color: var(--amber); }

.filters { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem; }
.filters button.active { border-color: var(--blue); color: var(--blue); }

a { color: var(--blue); }