:root {
  --bg: #f4f5f7;
  --card: #fff;
  --text: #1d2330;
  --muted: #6b7280;
  --accent: #2563eb;
  --border: #e3e5ea;
  --error: #b91c1c;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171c;
    --card: #1e232a;
    --text: #e6e8eb;
    --muted: #9aa1ac;
    --accent: #60a5fa;
    --border: #2d333c;
    --error: #f87171;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}
.login {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 16px;
}
.card {
  width: 100%;
  max-width: 340px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.card h1 { margin: 0 0 4px; font-size: 22px; }
label { display: flex; flex-direction: column; gap: 4px; color: var(--muted); font-size: 13px; }
input {
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
}
input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
button {
  font: inherit;
  cursor: pointer;
  border: 0;
  border-radius: 6px;
  padding: 9px 12px;
  background: var(--accent);
  color: #fff;
}
button.link { background: none; color: var(--accent); padding: 0; }
.error { margin: 0; color: var(--error); font-size: 14px; }
.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}
.brand { font-weight: 600; }
.user { display: flex; gap: 12px; align-items: center; color: var(--muted); }
.user form { margin: 0; }
.content { max-width: 960px; margin: 0 auto; padding: 24px 16px; }
.content h1 { margin-top: 0; font-size: 22px; }
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; }
.tile { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; }
.tile .label { color: var(--muted); font-size: 13px; }
.tile .value { font-size: 20px; font-weight: 600; margin-top: 4px; }