:root {
  --base: #131313;
  --surface: #1b1b1b;
  --surface-2: #202020;
  --ink: #ffffff;
  --muted: #d7d7d7;
  --accent-1: #4b52ff;
  --accent-2: #ff7a5c;
  --line: rgba(255, 255, 255, 0.15);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1200px 500px at -10% -10%, rgba(75, 82, 255, 0.18), transparent 55%),
    radial-gradient(1100px 420px at 110% 0%, rgba(255, 122, 92, 0.14), transparent 55%),
    var(--base);
  color: var(--ink);
  font-family: "Fira Code", monospace;
}

.page {
  width: min(1200px, 96vw);
  margin: 1.4rem auto 2.2rem;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.toolbar label {
  color: var(--muted);
  font-size: 0.95rem;
}

#metric-select {
  min-width: min(520px, 75vw);
  max-width: 100%;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: "Fira Code", monospace;
  padding: 0.45rem 0.6rem;
}

#commit-limit {
  width: 92px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: "Fira Code", monospace;
  padding: 0.45rem 0.6rem;
}

.charts {
  display: grid;
  gap: 1rem;
}

.chart-card {
  border: 1px solid var(--line);
  border-radius: 0;
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  padding: 0.9rem;
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.25);
  animation: rise 280ms ease both;
}

.chart-title {
  margin: 0 0 0.75rem;
  font-size: 1.02rem;
  font-family: "Vollkorn", serif;
  letter-spacing: -0.2px;
  color: var(--accent-2);
}

.empty {
  border: 1px dashed var(--line);
  border-radius: 0;
  padding: 1rem;
  text-align: center;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.03);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 700px) {
  .page {
    width: 95vw;
    margin-top: 1rem;
  }

  .toolbar {
    flex-direction: column;
    align-items: flex-start;
  }

  #metric-select {
    width: 100%;
    min-width: 0;
  }

  #commit-limit {
    width: 100%;
  }
}