:root {
  --ink: #1b1b1a; --ink-2: #5a5955; --ink-3: #9a9893;
  --paper: #faf9f6; --card: #ffffff; --line: #e8e6e0;
  --accent: #29523a; --accent-ink: #ffffff; --danger: #a63d2f;
  --font: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { background: var(--paper); color: var(--ink); font-family: var(--font); -webkit-font-smoothing: antialiased; }
body { margin: 0; font-size: 15px; line-height: 1.6; }
button, input, textarea { font: inherit; color: inherit; }

.top { display: flex; align-items: center; gap: 24px; padding: 14px 24px; border-bottom: 1px solid var(--line); background: var(--card); position: sticky; top: 0; z-index: 2; }
.top__brand { font-family: var(--mono); font-size: 14px; }
.top__brand span, .login__brand span { color: var(--ink-3); }
.tabs { display: flex; gap: 4px; }
.tab { border: 0; background: transparent; padding: 6px 12px; border-radius: 6px; font-family: var(--mono); font-size: 13px; color: var(--ink-2); cursor: pointer; }
.tab.is-active { background: var(--paper); color: var(--ink); }
.top__me { margin-left: auto; display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--ink-3); }

.wrap { max-width: 880px; margin: 0 auto; padding: 24px 20px 120px; }
.panel { display: none; }
.panel.is-active { display: block; }
.hint { color: var(--ink-3); font-size: 13px; margin: 8px 0 20px; }

.btn { border: 0; border-radius: 8px; padding: 8px 14px; font-size: 14px; cursor: pointer; background: #eeede8; color: var(--ink); text-decoration: none; display: inline-block; }
.btn:hover { background: #e4e2dc; }
.btn--primary { background: var(--accent); color: var(--accent-ink); }
.btn--primary:hover { background: #224630; }
.btn--ghost { background: transparent; color: var(--ink-3); padding: 4px 8px; }
.btn--danger { background: transparent; color: var(--danger); }
.btn--danger:hover { background: #f6e9e6; }
.btn--sm { padding: 5px 10px; font-size: 13px; }
.btn[disabled] { opacity: .5; cursor: default; }

.in { width: 100%; border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; background: var(--card); outline: none; resize: vertical; }
.in:focus { border-color: var(--accent); }
.in--short { max-width: 240px; }
.in--url { font-family: var(--mono); font-size: 12px; color: var(--ink-2); }
.in--title { font-weight: 600; }

.add { display: grid; gap: 8px; padding: 16px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; }
.add__row { display: flex; align-items: center; gap: 12px; justify-content: space-between; }
.add__row .hint { margin: 0; }
.preview { display: flex; gap: 12px; align-items: center; padding: 8px; background: var(--paper); border-radius: 8px; font-size: 13px; }
.preview img { width: 40px; height: 60px; object-fit: cover; border-radius: 3px; background: #ecebe6; }

.list { display: grid; gap: 12px; }
.card { display: grid; gap: 8px; padding: 14px 16px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; }
.card.is-hidden { opacity: .55; }
.card.is-dirty { border-color: var(--accent); }
.card__meta { display: flex; gap: 10px; align-items: center; font-size: 12px; color: var(--ink-3); font-family: var(--mono); }
.card__meta .pill { background: var(--paper); border-radius: 999px; padding: 1px 8px; }
.card__row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.card__actions { display: flex; gap: 4px; align-items: center; margin-left: auto; }
.card__hidden { display: inline-flex; gap: 6px; align-items: center; font-size: 13px; color: var(--ink-2); }

.book { display: grid; grid-template-columns: 96px 1fr; gap: 16px; }
.book__cover { display: grid; gap: 6px; justify-items: center; }
.book__cover img { width: 96px; aspect-ratio: 2/3; object-fit: cover; border-radius: 3px; background: #ecebe6; }
.book__cover input[type=file] { display: none; }
.book__body { display: grid; gap: 8px; min-width: 0; }

.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--ink); color: #fff; padding: 8px 14px; border-radius: 8px; font-size: 13px; }

.login { display: grid; place-items: center; min-height: 100vh; margin: 0; }
.login__box { display: grid; gap: 20px; justify-items: center; padding: 40px; }
.login__brand { font-family: var(--mono); font-size: 16px; font-weight: 500; margin: 0; }
.login__error { color: var(--danger); font-size: 13px; margin: 0; }

@media (max-width: 600px) {
  .top { flex-wrap: wrap; gap: 10px 16px; padding: 12px 16px; }
  .top__me { margin-left: 0; width: 100%; justify-content: space-between; }
  .book { grid-template-columns: 1fr; }
  .book__cover { justify-items: start; }
}