:root {
  --bg: #0f1419;
  --panel: #1a222c;
  --text: #e7ecf1;
  --muted: #8b9aab;
  --accent: #3d9cf0;
  --warn: #e6a23c;
  --danger: #e35d6a;
  --ok: #3bb273;
  --line: #2a3542;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: radial-gradient(1200px 600px at 10% -10%, #1b2a3a, var(--bg));
  color: var(--text);
  min-height: 100vh;
}
.login-body {
  display: grid;
  place-items: center;
}
.login-card, .top, article {
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.login-card {
  width: min(400px, 92vw);
  padding: 2rem;
}
.top {
  margin: 1rem;
  padding: 1rem 1.25rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
}
.top-actions { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }
h1 { margin: 0 0 .35rem; font-size: 1.4rem; letter-spacing: .02em; }
h2 { margin: 0 0 .75rem; font-size: 1.05rem; }
.muted { color: var(--muted); margin: 0; font-size: .9rem; }
.error, .warn-text { color: var(--danger); }
.msg { min-height: 1.2rem; color: var(--accent); }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1rem;
  padding: 0 1rem 2rem;
}
article { padding: 1rem 1.1rem; }
article.wide { grid-column: 1 / -1; }
.kv { list-style: none; padding: 0; margin: 0; }
.kv li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: .35rem 0;
  border-bottom: 1px solid var(--line);
  font-size: .92rem;
}
.kv span { color: var(--muted); }
label {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  font-size: .85rem;
  color: var(--muted);
  margin-bottom: .75rem;
}
input {
  background: #10161d;
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 8px;
  padding: .55rem .7rem;
}
button {
  background: var(--accent);
  color: #041018;
  border: 0;
  border-radius: 8px;
  padding: .55rem .9rem;
  font-weight: 600;
  cursor: pointer;
}
button.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
button.danger { background: var(--danger); color: #fff; }
.controls { display: flex; flex-wrap: wrap; gap: .5rem; }
.settings {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: .6rem 1rem;
}
.settings .full { grid-column: 1 / -1; }
.pill {
  display: inline-block;
  padding: .25rem .6rem;
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 700;
  background: #243041;
}
.mode-OBSERVE { background: #2a3a4a; }
.mode-PAPER { background: #3a4a20; color: #d7f08a; }
.mode-LIVE { background: #5a2030; color: #ffc0c8; }
.pill.danger { background: #5a2030; color: #ffc0c8; }
.pill.warn { background: #4a3a10; color: #ffd980; }
pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: .78rem;
  color: #c5d0da;
  max-height: 280px;
  overflow: auto;
}
.table-wrap { overflow: auto; max-height: 420px; }
table.coins {
  width: 100%;
  border-collapse: collapse;
  font-size: .8rem;
}
table.coins th, table.coins td {
  border-bottom: 1px solid var(--line);
  padding: .4rem .45rem;
  text-align: left;
  white-space: nowrap;
}
table.coins th { color: var(--muted); font-weight: 600; }
.approval-cards {
  display: grid;
  gap: 1rem;
}
.approval-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1rem;
  background: #121a22;
}
.approval-card h3 {
  margin: 0 0 .75rem;
  font-size: 1rem;
}