:root {
  --ink: #1b2a4a;
  --paper: #f7f5f2;
  --accent: #c8532b;
  --muted: #5b6478;
  --card: #ffffff;
  --line: #ddd8d2;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.5;
}

.wrap {
  max-width: 560px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

h1 {
  font-size: 1.9rem;
  margin: 0 0 0.5rem;
}

.lead { color: var(--muted); margin-top: 0; }

label {
  display: block;
  margin: 0.9rem 0 0.25rem;
  font-weight: bold;
}

input {
  width: 100%;
  padding: 0.55rem 0.6rem;
  font: inherit;
  color: var(--ink);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 4px;
}

button {
  margin-top: 1rem;
  padding: 0.55rem 1.1rem;
  font: inherit;
  font-weight: bold;
  color: #ffffff;
  background: var(--accent);
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

button.secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

button:focus-visible,
input:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.books {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
}

.books li {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.8rem 1rem;
  margin-bottom: 0.7rem;
}

.books .title { font-weight: bold; }
.books .author { color: var(--muted); font-style: italic; }
.books .note { margin: 0.3rem 0 0; }

.error { color: #8f1d14; font-weight: bold; }
#add-status { color: var(--muted); }