:root {
  --red: #7a1f1f;
  --green: #1f5d3a;
  --ink: #222;
  --muted: #666;
  --paper: #faf7f2;
  --card: #fff;
  --line: #e2ddd5;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--paper);
}

.topbar { background: var(--red); color: #fff; }
.topbar-inner {
  max-width: 960px; margin: 0 auto; padding: 12px 16px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand { color: #fff; font-weight: 600; text-decoration: none; font-family: Georgia, "New York", serif; font-size: 1.2rem; }
.topbar button.link { background: none; border: 0; color: #fff; cursor: pointer; font: inherit; text-decoration: underline; }

main { max-width: 960px; margin: 0 auto; padding: 24px 16px; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 20px; }
.auth { max-width: 380px; margin: 40px auto; }
h1 { font-family: Georgia, "New York", serif; font-weight: 600; margin-top: 0; }

label { display: block; margin-bottom: 14px; font-weight: 500; }
input[type=email], input[type=password], input[type=text] {
  display: block; width: 100%; margin-top: 4px; padding: 10px 12px;
  font: inherit; border: 1px solid var(--line); border-radius: 8px;
}

.btn {
  background: var(--green); color: #fff; border: 0; border-radius: 8px;
  padding: 10px 18px; font: inherit; font-weight: 600; cursor: pointer;
}
.btn:hover { filter: brightness(1.1); }

.error { color: #b00020; margin: 0 0 12px; }
.messages { list-style: none; padding: 0; }