/* ===== BookHaven 3D — библиотека (grid книг) ===== */

.library {
  position: fixed;
  inset: 0;
  overflow-y: auto;
  padding: 80px 6vw 120px;
  background: var(--bg);
  z-index: 2;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease-out);
}

.library.open {
  opacity: 1;
  pointer-events: auto;
}

.library-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
}

.library-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* Иконка-логотип (book.svg) */
.library-logo {
  height: 42px;
  width: auto;
  flex-shrink: 0;
}

/* Ночная тема: иконка тёмная (#1b2938) — инвертируем для контраста */
[data-theme="night"] .library-logo,
[data-theme="ember"] .library-logo,
[data-theme="amber"] .library-logo {
  filter: invert(0.92);
}

.library-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 44px);
  color: var(--text);
  margin: 0;
}

.library-count {
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--text-dim);
}

/* --- Сетка книг --- */
.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 32px 28px;
}

.book-card {
  cursor: pointer;
  transition: transform 0.3s var(--ease-out);
  position: relative;
}

.book-card:hover {
  transform: translateY(-4px);
}

.book-delete {
  position: absolute;
  top: -8px;
  right: -8px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: white;
  font-size: 18px;
  line-height: 1;
  display: grid;
  place-items: center;
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 0.2s, transform 0.2s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  z-index: 10;
}

.book-card:hover .book-delete {
  opacity: 1;
  transform: scale(1);
}

.book-delete:hover {
  background: #c62828;
  transform: scale(1.1);
}

.book-cover {
  position: relative;
  aspect-ratio: 2 / 3;
  border-radius: 6px 12px 12px 6px;
  background: linear-gradient(135deg, var(--cover-a), var(--cover-b));
  box-shadow: 0 8px 24px var(--shadow-book);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 18px 16px;
  transition: box-shadow 0.3s var(--ease-out);
}

.book-card:hover .book-cover {
  box-shadow: 0 16px 40px var(--shadow-book);
}

/* Обложка из FB2: картинка поверх градиента */
.book-cover-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

/* Когда есть картинка-обложка — тёмный градиент снизу (глубина корешка) */
.book-cover.has-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.35) 0%, transparent 40%);
  z-index: 2;
}

/* Корешок на обложке */
.book-cover::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 8px;
  background: linear-gradient(to right, rgba(0,0,0,0.25), transparent);
}

.book-meta {
  margin-top: 12px;
  text-align: center;
}

.book-meta-title {
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.book-meta-progress {
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 2px;
}

/* --- FAB «добавить книгу» --- */
.fab {
  position: fixed;
  right: 32px;
  bottom: 32px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: none;
  background: var(--accent);
  color: #fff;
  font-size: 30px;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 8px 24px var(--shadow-book);
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
  z-index: 50;
}

.fab:hover {
  transform: scale(1.08);
  box-shadow: 0 12px 32px var(--shadow-book);
}

/* --- Drag&drop оверлей --- */
.drop-overlay {
  position: fixed;
  inset: 0;
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  border: 3px dashed var(--accent);
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-family: var(--font-sans);
  font-size: 22px;
  color: var(--accent);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.drop-overlay.active {
  opacity: 1;
}

/* --- Адаптивность --- */
@media (max-width: 768px) {
  .library { padding: 60px 5vw 100px; }
  .book-grid { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 20px 16px; }
  .fab { right: 20px; bottom: 20px; width: 52px; height: 52px; font-size: 26px; }
}