:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-2: #1d212a;
  --border: #2a2f3a;
  --text: #e6e8ec;
  --muted: #8b93a3;
  --accent: #4f8cff;
  --green: #2ecc71;
  --red: #ff5d6c;
  --amber: #f5a623;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { background: var(--panel-2); padding: 1px 5px; border-radius: 4px; font-size: 0.9em; }
.mono, .mono * { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.small { font-size: 0.82em; }
.muted { color: var(--muted); }

/* topbar */
.topbar {
  display: flex; align-items: center; gap: 24px;
  padding: 0 24px; height: 56px; background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; color: var(--text); font-size: 1.05rem; }
.topbar nav { display: flex; gap: 18px; flex: 1; }
.topbar nav a { color: var(--muted); padding: 4px 0; }
.topbar nav a.active, .topbar nav a:hover { color: var(--text); text-decoration: none; }
.topbar .user { display: flex; align-items: center; gap: 10px; }
.avatar { width: 28px; height: 28px; border-radius: 50%; }

.container { max-width: 1040px; margin: 0 auto; padding: 28px 24px 60px; }
h1 { font-size: 1.5rem; margin: 0 0 4px; }
h2 { font-size: 1.1rem; margin: 0 0 14px; }
.foot { text-align: center; color: var(--muted); font-size: 0.8rem; padding: 24px; }

/* flashes */
.flashes { margin-bottom: 18px; display: grid; gap: 8px; }
.flash { padding: 10px 14px; border-radius: 8px; border: 1px solid var(--border); }
.flash-success { background: rgba(46,204,113,.12); border-color: rgba(46,204,113,.4); }
.flash-error { background: rgba(255,93,108,.12); border-color: rgba(255,93,108,.4); }

/* cards / stats */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 8px 0 24px; }
.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 12px; padding: 16px;
}
.stat-label { color: var(--muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: .04em; }
.stat-value { font-size: 1.6rem; font-weight: 700; margin: 6px 0 2px; }
.stat-sub { font-size: 0.85rem; color: var(--muted); }
.stat-sub.pos { color: var(--green); }
.stat-sub.neg { color: var(--red); }

/* panels & tables */
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 18px; margin-bottom: 20px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: .03em; }
tbody tr:last-child td { border-bottom: none; }

.tag { display: inline-block; background: var(--panel-2); border: 1px solid var(--border);
  padding: 1px 8px; border-radius: 99px; font-size: 0.78rem; color: var(--muted); }
.dir-bullish { color: var(--green); border-color: rgba(46,204,113,.4); }
.dir-bearish { color: var(--red); border-color: rgba(255,93,108,.4); }
.dir-neutral, .dir-non-directional-long-vol { color: var(--amber); border-color: rgba(245,166,35,.4); }

.status { padding: 2px 9px; border-radius: 99px; font-size: 0.8rem; text-transform: capitalize; }
.status-connected { background: rgba(46,204,113,.15); color: var(--green); }
.status-error { background: rgba(255,93,108,.15); color: var(--red); }
.status-unvalidated { background: rgba(245,166,35,.15); color: var(--amber); }

.note { background: var(--panel-2); border: 1px dashed var(--border); border-radius: 10px;
  padding: 14px 16px; color: var(--muted); }

/* buttons */
.btn, .btn-sm { display: inline-block; cursor: pointer; border-radius: 8px; border: 1px solid var(--border);
  background: var(--accent); color: #fff; font: inherit; padding: 10px 16px; text-align: center; }
.btn-sm { padding: 5px 11px; font-size: 0.82rem; }
.btn:hover, .btn-sm:hover { text-decoration: none; filter: brightness(1.08); }
.btn-secondary { background: var(--panel-2); color: var(--text); }
.btn-danger { background: transparent; color: var(--red); border-color: rgba(255,93,108,.4); }
.btn-google { background: #fff; color: #222; font-weight: 600; width: 100%; }
.btn-google .g { color: #4285f4; font-weight: 800; margin-right: 8px; }
.btn-on { background: var(--green); color: #06281a; border-color: transparent; font-weight: 600; }
.btn-off { background: var(--panel-2); color: var(--text); }
.actions { display: flex; gap: 6px; }
.actions form { display: inline; }
.connect-row { display: flex; gap: 10px; margin-bottom: 18px; }

/* auth */
.auth-card { max-width: 380px; margin: 8vh auto 0; background: var(--panel);
  border: 1px solid var(--border); border-radius: 16px; padding: 32px; text-align: center; }
.auth-card h1 { font-size: 1.4rem; }
.auth-card .btn { margin-top: 10px; }
.divider { display: flex; align-items: center; gap: 10px; color: var(--muted); margin: 18px 0; }
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--border); }
.dev-form { display: grid; gap: 8px; text-align: left; }
.dev-form label { color: var(--muted); font-size: 0.85rem; }

/* forms */
.stack-form { max-width: 460px; display: grid; gap: 14px; }
.stack-form label, .dev-form label { display: grid; gap: 6px; font-size: 0.9rem; }
input[type=text], input[type=email], input[type=password] {
  background: var(--panel-2); border: 1px solid var(--border); border-radius: 8px;
  color: var(--text); padding: 10px 12px; font: inherit; width: 100%;
}
input:focus { outline: none; border-color: var(--accent); }
.req { color: var(--red); }
.form-actions { display: flex; gap: 10px; margin-top: 4px; }

/* strategies */
.strategy-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.strategy { display: flex; flex-direction: column; gap: 10px; }
.strategy.on { border-color: rgba(46,204,113,.45); }
.strategy-head { display: flex; align-items: center; justify-content: space-between; }
.strategy-head h3 { margin: 0; font-size: 1.05rem; }
.strategy-summary { color: var(--muted); font-size: 0.9rem; margin: 0; }
.kv { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 14px; margin: 4px 0 8px; }
.kv div { display: flex; flex-direction: column; }
.kv dt { color: var(--muted); font-size: 0.72rem; text-transform: uppercase; letter-spacing: .03em; }
.kv dd { margin: 0; font-size: 0.88rem; }

@media (max-width: 820px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .strategy-grid { grid-template-columns: 1fr; }
  .topbar { gap: 12px; padding: 0 12px; }
}