:root {
  --bg: #f6f4ef;
  --card: #ffffff;
  --text: #1d1c1a;
  --muted: #6d6a63;
  --line: #e3dfd6;
  --accent: #1f3d36;
  --accent-text: #ffffff;
  --error: #a4302a;
  --notice: #f0e6c8;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161615;
    --card: #1f1f1d;
    --text: #ecebe7;
    --muted: #a09d95;
    --line: #34332f;
    --accent: #8fbfae;
    --accent-text: #10201b;
    --error: #e08078;
    --notice: #3a3424;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
}
.top {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 16px; border-bottom: 1px solid var(--line);
}
.brand { font-weight: 600; letter-spacing: .01em; }
main { max-width: 1040px; margin: 0 auto; padding: 24px 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 24px; }
.narrow { max-width: 380px; margin: 8vh auto 0; }
h1 { font-size: 1.35rem; margin: 0 0 12px; font-weight: 600; }
label { display: block; margin: 14px 0 0; font-size: .9rem; color: var(--muted); }
input {
  display: block; width: 100%; margin-top: 4px; padding: 10px 12px;
  font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--line); border-radius: 6px;
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
button {
  margin-top: 18px; padding: 10px 16px; font: inherit; font-weight: 600;
  color: var(--accent-text); background: var(--accent); border: 0; border-radius: 6px; cursor: pointer;
}
.logout button { margin: 0; padding: 6px 12px; font-weight: 500; }
.error { color: var(--error); }
.notice { background: var(--notice); padding: 10px 14px; border-radius: 6px; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
a { color: var(--accent); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin-top: 16px; }
.tile { border: 1px solid var(--line); border-radius: 8px; padding: 14px; }
.tile .label { display: block; font-size: .85rem; color: var(--muted); }
.tile .value { display: block; font-size: 1.6rem; font-weight: 600; margin-top: 4px; }