:root {
  --bg: #0d0d0f;
  --surface: #16161a;
  --border: #2a2a2e;
  --text: #e4e4e7;
  --text-muted: #71717a;
  --accent: #22c55e;
  --accent-dim: #16a34a;
  --error: #ef4444;
  --radius: 12px;
  --font-sans: 'Outfit', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: 420px;
}

.header {
  text-align: center;
  margin-bottom: 2rem;
}

.header h1 {
  font-weight: 500;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
}

.subtitle {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 300;
  margin-bottom: 0.5rem;
}

.last-update {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.cards {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  gap: 0.25rem 1rem;
  align-items: baseline;
  transition: border-color 0.2s;
}

.card:hover {
  border-color: #3f3f46;
}

.card-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 300;
  grid-column: 1;
  grid-row: 1;
}

.card-value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 500;
  grid-column: 2;
  grid-row: 1 / 3;
  align-self: center;
  color: var(--accent);
}

.card-symbol {
  font-size: 0.875rem;
  color: var(--text-muted);
  grid-column: 1;
  grid-row: 2;
}

.footer {
  margin-top: 2rem;
  text-align: center;
}

.status {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.status.loading {
  color: var(--text-muted);
}

.status.ok {
  color: var(--accent-dim);
}

.status.error {
  color: var(--error);
}

@media (min-width: 480px) {
  .header h1 {
    font-size: 1.75rem;
  }
  .card-value {
    font-size: 1.75rem;
  }
}