:root {
  --bg: #f6f4ef;
  --card: #ffffff;
  --ink: #26221c;
  --muted: #75705f;
  --accent: #7a5c3e;
  --accent-dark: #5c4329;
  --border: #e4ddcf;
  --danger: #b3452f;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

a { color: var(--accent-dark); }

.hidden { display: none !important; }
.muted { color: var(--muted); }
.grow { flex: 1; }

/* Topbar */
.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.brand {
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
  color: var(--ink);
}
.topnav {
  display: flex;
  gap: 14px;
  flex: 1;
}
.topnav a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 500;
}
.topnav a:hover { color: var(--ink); }
.topbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}
.whoami { color: var(--muted); font-size: 0.9rem; }

/* Buttons */
.btn {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: var(--radius);
  padding: 9px 16px;
  font-size: 0.95rem;
  cursor: pointer;
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  font-weight: 600;
}
.btn-primary:hover { background: var(--accent-dark); }
.btn-ghost { background: transparent; }
.btn-ghost:hover { background: var(--bg); }
.btn-danger { color: var(--danger); border-color: var(--danger); background: transparent; }

/* Layout */
.view { max-width: 1000px; margin: 0 auto; padding: 20px 16px 60px; }

.centered-card {
  max-width: 380px;
  margin: 10vh auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
}
.centered-card h1 { margin-bottom: 0; }

.stack { display: flex; flex-direction: column; gap: 14px; text-align: left; margin-top: 18px; }
.stack label { display: flex; flex-direction: column; gap: 5px; font-size: 0.9rem; color: var(--muted); font-weight: 500; }
input, textarea, select {
  font-family: inherit;
  font-size: 1rem;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: white;
  color: var(--ink);
  width: 100%;
}
input:focus, textarea:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.error { color: var(--danger); font-size: 0.9rem; }

/* Library */
.stats { display: flex; gap: 18px; margin-bottom: 16px; flex-wrap: wrap; }
.stat-pill {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.85rem;
  color: var(--muted);
}
.stat-pill strong { color: var(--ink); }

.toolbar { display: flex; gap: 10px; margin-bottom: 10px; }
.search-input { flex: 1; }

.filter-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 16px;
}
.filter-panel label { display: flex; flex-direction: column; gap: 4px; font-size: 0.8rem; color: var(--muted); min-width: 140px; }

.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 18px;
  margin-top: 10px;
}
.book-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  transition: transform 0.1s ease;
}
.book-card:hover { transform: translateY(-2px); }
.book-cover {
  width: 100%;
  aspect-ratio: 2/3;
  object-fit: cover;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 0.75rem;
  text-align: center;
  padding: 6px;
}
.book-card-body { padding: 8px 10px 10px; }
.book-card-title { font-weight: 600; font-size: 0.85rem; line-height: 1.25; margin: 0 0 3px; }
.book-card-author { font-size: 0.75rem; color: var(--muted); margin: 0; }
.book-card-badges { display: flex; gap: 4px; margin-top: 6px; flex-wrap: wrap; }
.badge { font-size: 0.65rem; padding: 2px 7px; border-radius: 999px; background: var(--bg); color: var(--muted); border: 1px solid var(--border); }
.badge.read { background: #e4efe1; color: #3d6b32; border-color: #cfe4ca; }
.badge.reading { background: #fbeecb; color: #8a6415; border-color: #f1dda1; }
.badge.dnf { background: #f5e0df; color: #8a3d38; border-color: #edc7c5; }

.empty-state { text-align: center; padding: 60px 20px; color: var(--muted); }

/* Add book */
.add-book h1 { margin-bottom: 4px; }
.scan-row { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; margin-top: 16px; }
.isbn-form { display: flex; gap: 10px; align-items: flex-end; flex: 1; min-width: 260px; }
.isbn-form label { flex: 1; display: flex; flex-direction: column; gap: 5px; font-size: 0.85rem; color: var(--muted); }
#lookupStatus { margin: 8px 0 4px; min-height: 1.2em; }

.book-form { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-top: 14px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.cover-preview-row { display: flex; gap: 14px; align-items: center; }
.cover-preview {
  width: 80px; height: 120px; object-fit: cover; border-radius: 6px; background: var(--bg);
  border: 1px solid var(--border);
}

.modal {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6);
  display: flex; align-items: center; justify-content: center; z-index: 100;
}
.modal-inner { background: white; padding: 16px; border-radius: var(--radius); width: min(420px, 92vw); }
#qr-reader { width: 100%; }

/* Book detail */
.back-link { display: inline-block; margin-bottom: 14px; text-decoration: none; }
.book-detail-header { display: flex; gap: 20px; flex-wrap: wrap; }
.book-detail-cover { width: 160px; height: 240px; object-fit: cover; border-radius: 8px; border: 1px solid var(--border); background: var(--card); }
.book-detail-info h1 { margin: 0 0 4px; }
.book-detail-info .authors { color: var(--muted); margin: 0 0 10px; }
.meta-line { font-size: 0.9rem; color: var(--muted); margin: 2px 0; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin: 10px 0; }
.chip { background: var(--bg); border: 1px solid var(--border); border-radius: 999px; padding: 3px 10px; font-size: 0.8rem; }

.read-status-block { margin-top: 16px; display: flex; gap: 18px; flex-wrap: wrap; }
.read-status-card { border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 14px; background: var(--card); }
.read-status-card .name { font-weight: 600; font-size: 0.9rem; margin-bottom: 6px; }
.status-btns { display: flex; gap: 6px; }
.status-btns button { padding: 5px 10px; font-size: 0.8rem; }
.status-btns button.active { background: var(--accent); border-color: var(--accent); color: white; }

.rating-block { margin-top: 10px; }
.star-rating { display: flex; gap: 2px; }
.star-rating button { background: none; border: none; cursor: pointer; font-size: 1.3rem; padding: 0 1px; color: var(--border); line-height: 1; }
.star-rating button.filled { color: #e0a940; }
.review-input { width: 100%; margin-top: 8px; font-size: 0.85rem; }
.stat-pill.clickable { cursor: pointer; background: var(--card); border: 1px solid var(--border); }
.stat-pill.clickable:hover { border-color: var(--accent); }

.goodreads-link { display: inline-block; margin-top: 6px; font-size: 0.85rem; }

.detail-actions { margin-top: 20px; display: flex; gap: 10px; }
.detail-description { margin-top: 16px; line-height: 1.5; }

@media (max-width: 640px) {
  .row2 { grid-template-columns: 1fr; }
  .topnav { gap: 10px; }
}