:root {
  --bg: #0b0c0f;
  --card: #14161b;
  --text: #e9eef5;
  --muted: #9fb0c3;
  --accent: #4f8cff;
  --border: #242833;
  --danger: #ff5f5f;
  --ok: #35c27e;
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
  --shadow-sm: 0 4px 12px rgba(0,0,0,0.25);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, Apple Color Emoji, Segoe UI Emoji; }

.app-header { display: flex; justify-content: space-between; align-items: center; padding: 14px 20px; border-bottom: 1px solid var(--border); position: sticky; top: 0; background: rgba(11,12,15,0.9); backdrop-filter: blur(8px); z-index: 10; }
.brand { display: flex; gap: 10px; align-items: center; font-weight: 700; }
.logo { font-size: 22px; color: var(--accent); }
.title { font-size: 17px; letter-spacing: 0.35px; }
.header-actions { display: flex; gap: 8px; align-items: center; }
.toggle { display: inline-flex; gap: 6px; align-items: center; color: var(--muted); font-size: 14px; }

.container { max-width: 1100px; margin: 0 auto; padding: 18px; }
.view h2 { margin: 16px 0; }
.name-label { margin-bottom: 12px; }
.name-label { display: inline-flex; flex-direction: column; gap: 6px; min-width: 200px; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.row.right { justify-content: flex-end; }
.row.between { justify-content: space-between; }
.grow { flex: 1 1 auto; }

label { display: inline-flex; flex-direction: column; gap: 6px; color: var(--muted); font-size: 14px; }
input, select, textarea { background: #0f1116; border: 1px solid var(--border); color: var(--text); padding: 12px 14px; border-radius: 10px; width: 100%; outline: none; transition: border-color .15s ease, box-shadow .15s ease; }
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(79,140,255,0.18); }
textarea { resize: vertical; }

/* Prevent iOS zoom on focus by ensuring >=16px font-size on form controls */
input, select, textarea { font-size: 16px; }

/* Ensure key fields also meet iOS minimum font-size */
#bookId { font-size: 16px; }
#comment { font-size: 16px; }

/* Make ID field visually shorter while preserving full value */
input#bookId {
  max-width: 160px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
@media (max-width: 640px) {
  input#bookId { max-width: 100%; }
}

button { appearance: none; border: 1px solid var(--border); background: #11131a; color: var(--text); padding: 10px 14px; border-radius: 10px; cursor: pointer; transition: transform .05s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease; }
button:hover { transform: translateY(-1px); box-shadow: var(--shadow-sm); }
button.primary { background: var(--accent); border-color: var(--accent); color: white; }
button.primary:hover { filter: brightness(1.05); }
button.secondary { background: #0f1116; }
button.link { background: transparent; border: none; color: var(--muted); text-decoration: underline; }
button:disabled { opacity: 0.6; cursor: default; }

.card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 16px; box-shadow: var(--shadow); }
.list { display: grid; gap: 10px; }

.filters { display: flex; gap: 8px; align-items: center; margin: 8px 0 12px; }
/* single select filter */
.select-filter { appearance: none; background: #0f1116; color: var(--text); border: 1px solid var(--border); border-radius: 12px; padding: 10px 12px; box-shadow: var(--shadow-sm); }
.select-filter:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(79,140,255,0.18); }

/* Styled multi-select */
.select-multi { appearance: none; background: #0f1116; color: var(--text); border: 1px solid var(--border); border-radius: 12px; padding: 8px 10px; line-height: 1.2; box-shadow: var(--shadow-sm); }
.select-multi:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(79,140,255,0.18); }
.select-multi option { padding: 6px 8px; border-radius: 6px; }
.select-multi option:checked { background: rgba(79,140,255,0.25) linear-gradient(0deg, rgba(79,140,255,0.25), rgba(79,140,255,0.25)); color: #ffffff; }

.book-form { display: grid; grid-template-columns: 1fr 220px; gap: 16px; align-items: start; }
.book-form .form-main { display: grid; gap: 14px; }
.book-form .form-side { display: flex; flex-direction: column; align-items: center; justify-content: space-between; gap: 12px; align-self: stretch; }
.book-form .form-side .cover { width: 160px; height: 240px; border-radius: 10px; object-fit: cover; background: #0f1116; border: 1px solid var(--border); }
.book-form .actions-side { display: grid; gap: 8px; width: 100%; margin-top: auto; }

.comment-row { align-items: stretch; }

.book-item { display: grid; grid-template-columns: 56px 1fr auto; gap: 14px; align-items: center; background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 10px 12px; box-shadow: var(--shadow-sm); }
.book-item .cover { width: 56px; height: 84px; border-radius: 8px; object-fit: cover; background: #0f1116; border: 1px solid var(--border); }
.book-item .meta { display: flex; flex-direction: column; gap: 4px; }
.book-item .title { font-weight: 650; }
.book-item .authors { color: var(--muted); font-size: 14px; }
.book-item .tags { display: flex; gap: 6px; align-items: center; color: var(--muted); font-size: 13px; }
.book-item .actions { display: flex; gap: 6px; }
.tag { padding: 3px 8px; border: 1px solid var(--border); border-radius: 999px; }
.rating { color: #ffcf40; }

.snapshot { margin-top: 16px; display: grid; gap: 10px; }
.snapshot-output { display: flex; gap: 8px; }
.snapshot-output input { flex: 1 1 auto; }

.suggestions { display: grid; gap: 8px; margin: 8px 0 12px; }
.suggestion-item { display: grid; grid-template-columns: 36px 1fr auto; gap: 10px; align-items: center; background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 8px; cursor: pointer; box-shadow: var(--shadow-sm); }
.suggestion-item:hover, .suggestion-item.active { border-color: var(--accent); background: rgba(79,140,255,0.08); }
.suggestion-cover { width: 36px; height: 54px; border-radius: 6px; object-fit: cover; background: #0f1116; border: 1px solid var(--border); }
.suggestion-title { font-weight: 600; }
.suggestion-authors { color: var(--muted); font-size: 13px; }
.suggestion-pill { color: var(--muted); font-size: 12px; border: 1px solid var(--border); border-radius: 999px; padding: 2px 6px; }

.notice { margin-bottom: 14px; padding: 12px 14px; border-radius: 10px; }
.notice.error { background: #2a0f14; border: 1px solid #4d1a23; color: #ffb3b3; }
.notice.ok { background: #0f2319; border: 1px solid #1c3a2a; color: #c7f1da; }
.is-hidden { display: none !important; }

/* Hide header right actions (privacy + import/export) */
.header-actions { display: none; }

/* Pretty back-to-editor control */
#backToEditor { text-decoration: none; display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border-radius: 999px; border: 1px solid var(--border); background: #11131a; color: var(--text); box-shadow: var(--shadow-sm); transition: transform .05s ease, box-shadow .15s ease, border-color .15s ease, background .15s ease; }
#backToEditor::before { content: '\2190'; /* ← */ color: var(--accent); font-weight: 700; }
#backToEditor:hover { transform: translateY(-1px); box-shadow: var(--shadow-sm); border-color: var(--accent); background: rgba(79,140,255,0.10); }

dialog { border: none; padding: 0; border-radius: 12px; }
.dialog { background: var(--card); color: var(--text); border: 1px solid var(--border); padding: 14px; min-width: 320px; max-width: 720px; }

@media (max-width: 640px) {
  .book-form { grid-template-columns: 1fr; }
  .book-form .form-side { align-items: flex-start; justify-content: flex-start; }
  .book-form .form-side .cover { width: 140px; height: 210px; }
  .book-item { grid-template-columns: 48px 1fr; }
  .book-item .actions { grid-column: 1 / -1; justify-content: flex-end; }
}