:root {
  --ink: #141414;
  --muted: #666;
  --line: #e2e2e2;
  --accent: #005a31;
  --bg: #ffffff;
  --card: #f7f7f5;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-weight: 400;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}

.wrap { max-width: 920px; margin: 0 auto; padding: 0 16px; }

header {
  background: var(--accent);
  color: #fff;
  padding: 24px 0;
}
header h1 { margin: 0; font-weight: 500; }
header .tag { margin: 4px 0 0; opacity: 0.85; }
.whoami { margin-top: 12px; font-size: 0.95rem; }
.whoami button { margin-left: 8px; }

main { padding: 24px 0 48px; }

h2 { font-weight: 500; margin-top: 32px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 20px;
  max-width: 420px;
}

form { display: flex; flex-direction: column; gap: 12px; margin-top: 12px; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 0.9rem; }
input {
  padding: 8px;
  border: 1px solid var(--line);
  font-size: 1rem;
}
button {
  padding: 8px 14px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  font-size: 0.95rem;
  cursor: pointer;
}
button:disabled { opacity: 0.45; cursor: default; }

.pets {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}
.pet {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 16px;
}
.pet h3 { margin: 0 0 4px; font-weight: 500; }
.pet .meta { color: var(--muted); font-size: 0.85rem; margin: 0 0 8px; }

.muted { color: var(--muted); }
.error { color: #b00020; font-size: 0.9rem; }

footer { padding: 24px 0 48px; border-top: 1px solid var(--line); }
footer a { color: var(--accent); }