:root {
  --bg: #0c0e12;
  --bg-elev: #12151c;
  --surface: #181c26;
  --text: #e8eaed;
  --muted: #9aa0a8;
  --accent: #6eb5ff;
  --warn: #e8c547;
  --border: #2a3140;
  --ok: #7cb97c;
  --danger: #e07a7a;
}
*, *::before, *::after { box-sizing: border-box; }
html { color-scheme: dark; background: var(--bg); }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.5;
  font-size: 15px;
}
a { color: var(--accent); }
header {
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.25rem;
  background: var(--bg-elev);
}
header .inner {
  max-width: 52rem;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}
header h1 { margin: 0; font-size: 1.15rem; font-weight: 700; }
header nav { display: flex; flex-wrap: wrap; gap: 0.75rem 1rem; font-size: 0.88rem; align-items: center; }
main { max-width: 52rem; margin: 0 auto; padding: 1.5rem 1.25rem 3rem; }
h2 {
  margin: 1.75rem 0 0.75rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.35rem;
}
h2:first-of-type { margin-top: 0.5rem; }
.grid { display: grid; gap: 1rem; }
@media (min-width: 640px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
}
label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 0.35rem;
}
input, select {
  width: 100%;
  padding: 0.55rem 0.65rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 1rem;
}
input:focus, select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.field-hint { font-size: 0.75rem; color: var(--muted); margin-top: 0.25rem; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.1rem;
  margin-top: 1rem;
}
.results dl { margin: 0; display: grid; gap: 0.65rem; }
.results dt { font-size: 0.78rem; color: var(--muted); font-weight: 600; }
.results dd {
  margin: 0.15rem 0 0;
  font-size: 1.05rem;
  font-variant-numeric: tabular-nums;
}
.val-ok { color: var(--ok); }
.val-warn { color: var(--warn); }
.val-danger { color: var(--danger); }
table.size-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin-top: 0.75rem;
}
table.size-table th, table.size-table td {
  border: 1px solid var(--border);
  padding: 0.45rem 0.5rem;
  text-align: right;
}
table.size-table th:first-child, table.size-table td:first-child { text-align: left; }
table.size-table th { background: var(--bg-elev); color: var(--muted); font-weight: 600; }
.disclaimer {
  margin-top: 2rem;
  padding: 1rem;
  border-radius: 8px;
  border: 1px solid rgba(232, 197, 71, 0.35);
  background: rgba(232, 197, 71, 0.08);
  color: #f0e6c8;
  font-size: 0.82rem;
}
.mono { font-family: ui-monospace, monospace; font-size: 0.9em; }