:root {
  --nova-bg: #06101c;
  --nova-surface: #0d1b2d;
  --nova-line: #2a4a6a;
  --nova-text: #eef6ff;
  --nova-muted: #9db6ce;
  --nova-accent: #3b9bff;
  --nova-warn: #ffb020;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at 80% -12%, rgba(59, 155, 255, 0.16), transparent 42%),
    var(--nova-bg);
  color: var(--nova-text);
  font-family: "Segoe UI", Tahoma, sans-serif;
}

.brand-kicker {
  margin: 0;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--nova-accent);
  font-size: 0.75rem;
}

.biz-header, .biz-main {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.biz-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0 8px;
  flex-wrap: wrap;
}

.biz-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.biz-nav a {
  color: var(--nova-text);
  text-decoration: none;
  border: 1px solid var(--nova-line);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 0.85rem;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.disclaimer { color: var(--nova-muted); line-height: 1.45; }

.command-card, .card {
  background: var(--nova-surface);
  border: 1px solid var(--nova-line);
  border-radius: 18px;
  padding: 18px;
  margin-top: 16px;
}

.card.compact { margin-top: 0; padding: 14px; }
.card.compact h3 { margin: 0; font-size: 0.95rem; }

.section-nav, .dashboard, .command-actions, .login-grid, .ask-row, .compose-grid {
  display: grid;
  gap: 12px;
}

.section-nav {
  margin-top: 16px;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.dashboard { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.command-actions { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); margin-top: 12px; }
.ask-row { grid-template-columns: 1fr auto; margin-top: 12px; }
.login-grid { grid-template-columns: 1fr 1fr auto; }
.compose-grid { grid-template-columns: 1fr 1fr; }

label { display: grid; gap: 6px; color: var(--nova-muted); font-size: 0.85rem; }

input, textarea, select {
  width: 100%;
  border: 1px solid var(--nova-line);
  background: #081422;
  color: var(--nova-text);
  border-radius: 10px;
  padding: 12px;
  min-height: 44px;
}

button {
  border: 0;
  border-radius: 10px;
  padding: 12px 14px;
  min-height: 44px;
  background: var(--nova-accent);
  color: #041018;
  font-weight: 700;
  cursor: pointer;
}

.secondary {
  background: transparent;
  color: var(--nova-text);
  border: 1px solid var(--nova-line);
}

.hint, .muted { color: var(--nova-muted); }
.hidden { display: none !important; }
.banner { margin-top: 16px; padding: 12px 14px; border-radius: 10px; background: #3a2030; }
.banner.ok { background: #16351f; }
#brain-output { white-space: pre-wrap; overflow-wrap: anywhere; min-height: 72px; }

.item {
  border-top: 1px solid var(--nova-line);
  padding: 12px 0;
}

.metric strong { color: var(--nova-warn); }

@media (max-width: 720px) {
  .biz-header, .biz-main { width: min(100% - 20px, 720px); }
  .ask-row, .login-grid, .compose-grid { grid-template-columns: 1fr; }
  h1 { font-size: 1.4rem; }
}

@media (min-width: 1280px) {
  .biz-header, .biz-main { width: min(1280px, calc(100% - 48px)); }
}

@media (min-width: 1600px) {
  .biz-header, .biz-main { width: min(1440px, calc(100% - 64px)); }
}