@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap");

:root {
  color-scheme: light dark;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --bg: #f3f4f6;
  --card: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --accent: #2563eb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 2rem;
  flex-wrap: wrap;
  padding: 2.5rem clamp(1rem, 5vw, 4rem);
}

h1 {
  margin: 0.2rem 0 0;
  font-size: clamp(2rem, 4vw, 3rem);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-size: 0.75rem;
  color: var(--muted);
  margin: 0;
}

.controls {
  display: flex;
  gap: 1rem;
  align-items: flex-end;
  flex-wrap: wrap;
}

.picker {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-weight: 500;
}

.picker select {
  font: inherit;
  border: 1px solid #d1d5db;
  border-radius: 0.6rem;
  padding: 0.6rem 0.9rem;
  min-width: 160px;
}

main {
  padding: 0 clamp(1rem, 5vw, 4rem) 4rem;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--card);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
}

.stat-card strong {
  display: block;
  font-size: 2rem;
  margin: 0.3rem 0;
}

.stat-card small {
  color: var(--muted);
}

.chart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.chart-card {
  background: var(--card);
  border-radius: 1.2rem;
  padding: 1.25rem 1.5rem 1.5rem;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

.chart-card header {
  padding: 0;
  margin-bottom: 1rem;
  flex-direction: column;
  align-items: flex-start;
}

.chart-card h2 {
  margin: 0;
}

.chart-card p {
  margin: 0.2rem 0 0;
  color: var(--muted);
}

footer {
  text-align: center;
  padding: 2rem 1rem 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}

code {
  font-family: "JetBrains Mono", SFMono-Regular, Consolas, monospace;
  background: rgba(37, 99, 235, 0.12);
  padding: 0.1rem 0.35rem;
  border-radius: 0.3rem;
}

.error-state {
  background: var(--card);
  border-radius: 1rem;
  padding: 2rem;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
  text-align: center;
  margin-top: 2rem;
}

@media (max-width: 720px) {
  header {
    flex-direction: column;
    align-items: flex-start;
  }

  .controls {
    width: 100%;
  }

  .picker {
    width: 100%;
  }

  .picker select {
    width: 100%;
  }
}
.history-grid {
  margin-top: 2rem;
}