:root {
  --primary: #2b6cb0;
  --primary-dark: #1a4971;
  --bg: #f8f9fa;
  --card: #ffffff;
  --text: #1a202c;
  --text-sub: #718096;
  --border: #e2e8f0;
  --accent: #319795;
  --radius: 12px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Noto Sans JP', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-tap-highlight-color: transparent;
}

/* Responsive PC Standard Container Width (max 1080px) */
.app-container {
  max-width: 1080px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  height: 60px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-left { display: flex; align-items: center; gap: 12px; }
.header-title { font-size: 18px; font-weight: 700; cursor: pointer; user-select: none; color: #2d3748; }
.icon-btn { color: var(--text); font-size: 20px; text-decoration: none; display: flex; align-items: center; padding: 4px; border-radius: 6px; }
.icon-btn:hover { background: #edf2f7; }

.profile-badge { font-size: 13px; font-weight: 500; display: flex; align-items: center; gap: 6px; }

.nav-tabs {
  display: flex;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 0 16px;
  gap: 16px;
}

.tab-btn {
  padding: 14px 20px; border: none; background: none;
  font-size: 14px; font-weight: 500; color: var(--text-sub);
  border-bottom: 3px solid transparent; cursor: pointer;
  display: flex; align-items: center; gap: 8px;
  transition: all 0.2s ease;
}
.tab-btn:hover { color: var(--primary); }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 700; }

.app-main { flex: 1; padding: 20px 24px; }
.tab-content { display: none; }
.tab-content.active { display: block; }

.notice-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 36px 24px; text-align: center; margin-top: 24px; max-width: 500px; margin-left: auto; margin-right: auto;
  box-shadow: var(--shadow-sm);
}
.notice-card h2 { font-size: 20px; margin: 16px 0 8px; }
.notice-card p { font-size: 14px; color: var(--text-sub); margin-bottom: 20px; }
.debug-hint { font-size: 12px; color: #a0aec0; margin-top: 24px; }

/* Buttons & Action Bar */
.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.btn {
  padding: 10px 16px; border-radius: 8px; border: none; font-size: 13px; font-weight: 700;
  cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  white-space: nowrap; transition: all 0.15s ease;
}
.btn:hover { opacity: 0.9; transform: translateY(-1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-secondary { background: #edf2f7; color: #2d3748; }
.btn-accent { background: var(--accent); color: #fff; }
.btn-outline { background: #ffffff; color: #2d3748; border: 1px solid var(--border); }
.btn-outline:hover { background: #f7fafc; }
.btn-outline-danger { background: #fff5f5; color: #e53e3e; border: 1px solid #feb2b2; }
.btn-text { background: none; border: none; color: var(--primary); font-size: 12px; font-weight: 700; cursor: pointer; text-decoration: underline; }

/* Quick Status Chips (サブフィルタータブ) */
.quick-status-chips {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  margin-bottom: 16px;
  scrollbar-width: thin;
}

.status-chip {
  padding: 8px 14px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--card);
  font-size: 13px;
  font-weight: 500;
  color: #4a5568;
  cursor: pointer;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.status-chip:hover { border-color: #cbd5e0; background: #f7fafc; }
.status-chip.active { background: var(--primary); color: #fff; border-color: var(--primary); font-weight: 700; }

.chip-count {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 10px;
  background: rgba(0,0,0,0.06);
}
.status-chip.active .chip-count { background: rgba(255,255,255,0.25); color: #fff; }

/* Batch Action Bar */
.batch-action-bar {
  background: #ebf8ff;
  border: 1px solid #bee3f8;
  padding: 12px 16px;
  border-radius: 10px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.batch-info { display: flex; align-items: center; gap: 12px; font-weight: 700; color: #2b6cb0; font-size: 14px; }
.batch-buttons { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.batch-select { padding: 6px 10px; border-radius: 6px; border: 1px solid #90cdf4; font-size: 13px; background: #fff; }

/* Filter Card Layout */
.filter-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}

.filter-top-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 12px;
  margin-bottom: 12px;
}

@media (max-width: 768px) {
  .filter-top-row { grid-template-columns: 1fr; }
  .app-main { padding: 12px; }
}

.search-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.search-input-wrap input {
  width: 100%;
  padding: 10px 38px 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
}

.search-icon-btn {
  position: absolute; right: 8px; background: none; border: none; color: #718096; font-size: 18px; cursor: pointer; padding: 4px;
}

.filter-selectors {
  display: contents; /* Seamless grid placement on PC */
}

.filter-selectors select {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  background: #fff;
  color: #2d3748;
}

.view-toggle-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 10px;
  border-top: 1px solid #f0f0f0;
}

.count-label { font-size: 13px; font-weight: 700; color: #718096; }

.view-switch-btns { display: flex; gap: 6px; }
.view-btn {
  background: #f7fafc;
  border: 1px solid var(--border);
  color: #718096;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.view-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  font-weight: 700;
}

.web-search-suggest {
  background: #ebf8ff; border: 1px solid #bee3f8; padding: 14px; border-radius: 8px; margin-bottom: 20px; text-align: center;
}
.web-search-suggest p { font-size: 13px; color: #2b6cb0; margin-bottom: 8px; }

/* Grid View (PC Optimized Bookshelf Columns) */
.books-grid-view {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}

.grid-book-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  position: relative;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.grid-book-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: #cbd5e0; }

.grid-book-card.selected {
  border: 2px solid var(--primary);
  background: #ebf8ff;
}

.batch-checkbox {
  position: absolute;
  top: 12px;
  left: 12px;
  width: 22px;
  height: 22px;
  accent-color: var(--primary);
  z-index: 5;
}

.grid-book-cover {
  width: 100%;
  aspect-ratio: 2/3;
  object-fit: cover;
  border-radius: 6px;
  background: #e2e8f0;
}

.grid-book-title {
  font-size: 13px;
  font-weight: 700;
  color: #2d3748;
  margin-top: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.4;
}

.grid-book-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 6px;
}

.grid-book-status { font-size: 10px; }

/* List View (PC Optimized Row Layout) */
.books-list-view {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.book-card {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: 12px 16px; display: flex; gap: 16px; align-items: center; cursor: pointer;
  transition: all 0.15s ease; box-shadow: var(--shadow-sm);
}
.book-card:hover { border-color: #cbd5e0; box-shadow: var(--shadow-md); }
.book-card.selected { border: 2px solid var(--primary); background: #ebf8ff; }

.book-cover { width: 50px; height: 72px; object-fit: cover; border-radius: 4px; background: #e2e8f0; flex-shrink: 0; }
.book-info { flex: 1; min-width: 0; }
.book-title { font-size: 15px; font-weight: 700; color: #2d3748; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.book-author { font-size: 12px; color: var(--text-sub); margin-top: 2px; }
.book-tags { display: flex; gap: 8px; margin-top: 6px; align-items: center; flex-wrap: wrap; }
.status-badge { font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 4px; background: #edf2f7; }
.status-badge.unread { background: #feebc8; color: #744210; }
.status-badge.reading { background: #ebf8ff; color: #2b6cb0; }
.status-badge.read { background: #c6f6d5; color: #22543d; }
.status-badge.wishlist { background: #f3e8ff; color: #6b21a8; }

/* Tab 2: Tools & Management UI */
.tools-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 768px) {
  .tools-grid { grid-template-columns: 1fr 1fr; }
  .tools-grid .gacha-tool-box { grid-column: span 2; }
}

.tool-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.tool-header { display: flex; gap: 14px; align-items: flex-start; }
.tool-header h3 { font-size: 16px; color: #2d3748; margin-bottom: 2px; }
.tool-header p { font-size: 12px; color: var(--text-sub); }

.tool-icon-gacha { font-size: 32px; color: #319795; }
.tool-icon-loc { font-size: 28px; color: #2b6cb0; }
.tool-icon-batch { font-size: 28px; color: #8b5cf6; }

.add-loc-form { display: flex; gap: 8px; }
.add-loc-form input { flex: 1; padding: 8px 12px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; }

.sub-label { font-size: 12px; font-weight: 700; color: #718096; display: block; margin-bottom: 6px; }

.location-chips-container { display: flex; flex-wrap: wrap; gap: 6px; }
.loc-chip {
  background: #f7fafc; border: 1px solid var(--border); padding: 4px 10px; border-radius: 16px; font-size: 12px; color: #4a5568;
}

.tool-desc-text { font-size: 13px; color: var(--text-sub); margin-top: 8px; }

/* Modal Styles */
.modal-overlay {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.5); display: flex; align-items: center; justify-content: center; z-index: 1000; padding: 16px;
  backdrop-filter: blur(2px);
}

.modal-card {
  background: #ffffff; border-radius: 14px; width: 100%; max-width: 560px; max-height: 88vh;
  display: flex; flex-direction: column; box-shadow: 0 20px 40px rgba(0,0,0,0.2); overflow: hidden;
}

.modal-header {
  padding: 16px 20px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between;
}
.modal-header h3 { font-size: 16px; display: flex; align-items: center; gap: 8px; color: #2d3748; }
.close-btn { background: none; border: none; font-size: 22px; color: #a0aec0; cursor: pointer; padding: 4px; border-radius: 6px; }
.close-btn:hover { background: #f7fafc; }

.modal-body { padding: 20px; overflow-y: auto; flex: 1; }

.csv-section-box {
  background: #f7fafc; border: 1px solid var(--border); padding: 16px; border-radius: 10px;
}
.csv-section-box h4 { font-size: 14px; color: #2d3748; margin-bottom: 4px; display: flex; align-items: center; gap: 6px; }
.csv-desc { font-size: 12px; color: var(--text-sub); margin-bottom: 12px; }
.csv-status-text { font-size: 12px; margin-top: 8px; font-weight: 700; color: #2b6cb0; }

.detail-hero { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 16px; background: #f7fafc; padding: 16px; border-radius: 10px; }
.detail-cover-img { width: 70px; height: 100px; object-fit: cover; border-radius: 6px; background: #e2e8f0; flex-shrink: 0; box-shadow: var(--shadow-sm); }
.detail-hero-info h4 { font-size: 16px; font-weight: 700; color: #1a202c; margin-bottom: 4px; }
.detail-subtext { font-size: 12px; color: #718096; }

.edit-form-group { margin-bottom: 16px; }
.edit-form-group label { display: block; font-size: 12px; font-weight: 700; color: #4a5568; margin-bottom: 6px; }
.edit-form-group select, .edit-form-group input, .edit-form-group textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; background: #fff; font-family: inherit;
}

.memo-template-tags { display: flex; gap: 6px; margin-bottom: 8px; flex-wrap: wrap; }
.memo-tag-btn {
  background: #edf2f7; border: 1px solid var(--border); padding: 4px 10px; border-radius: 6px; font-size: 11px; cursor: pointer; color: #4a5568; font-weight: 500;
}
.memo-tag-btn:hover { background: #e2e8f0; }

.rating-stars { display: flex; gap: 6px; font-size: 24px; color: #cbd5e0; cursor: pointer; }
.rating-stars span.active { color: #f6ad55; }

.affiliate-links-group { margin-bottom: 16px; padding-top: 12px; border-top: 1px solid #edf2f7; }
.affiliate-links-group label { display: block; font-size: 12px; font-weight: 700; color: #4a5568; margin-bottom: 8px; }
.affiliate-btns { display: flex; gap: 10px; }
.btn-affiliate {
  flex: 1; padding: 10px; border-radius: 8px; font-size: 12px; font-weight: 700; text-decoration: none;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; transition: transform 0.15s ease;
}
.btn-affiliate:hover { transform: translateY(-1px); }
.btn-affiliate.amazon { background: #feebc8; color: #744210; }
.btn-affiliate.rakuten { background: #fce8e6; color: #bf0000; }

.modal-footer-btns { display: grid; grid-template-columns: 2fr 1fr; gap: 10px; margin-top: 24px; }

.gacha-box { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 24px 16px; text-align: center; }

.stats-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-bottom: 20px; }
@media (max-width: 600px) {
  .stats-grid { grid-template-columns: repeat(3, 1fr); }
}

.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 14px 8px; text-align: center; box-shadow: var(--shadow-sm); }
.stat-num { font-size: 24px; font-weight: 700; color: var(--primary); }
.stat-label { font-size: 11px; color: var(--text-sub); margin-top: 2px; }

.stats-section-box { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 18px; margin-top: 16px; box-shadow: var(--shadow-sm); }
.stats-section-box h3 { font-size: 14px; color: #2d3748; margin-bottom: 12px; display: flex; align-items: center; gap: 6px; }

.progress-bar-wrap { height: 12px; background: #e2e8f0; border-radius: 6px; overflow: hidden; margin-bottom: 8px; }
.progress-bar-inner { height: 100%; background: #38b2ac; transition: width 0.5s ease; }
.progress-label-text { font-size: 12px; font-weight: 700; color: #2d3748; text-align: right; }

.location-stats-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 8px; }
.location-stat-item { display: flex; justify-content: space-between; font-size: 13px; padding: 8px 12px; background: #f7fafc; border-radius: 8px; border: 1px solid #edf2f7; }

/* Modal Search Results UI */
.modal-search-bar { display: flex; gap: 8px; margin-bottom: 16px; }
.modal-search-bar input { flex: 1; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; }
.modal-results { display: flex; flex-direction: column; gap: 10px; min-height: 200px; }
.modal-placeholder { text-align: center; color: #a0aec0; padding: 40px 0; font-size: 13px; }

.search-result-item { display: flex; gap: 12px; padding: 12px; border: 1px solid var(--border); border-radius: 8px; align-items: center; background: #fafafa; }
.result-cover { width: 44px; height: 62px; object-fit: cover; border-radius: 4px; background: #e2e8f0; flex-shrink: 0; }
.result-info { flex: 1; min-width: 0; }
.result-title { font-size: 14px; font-weight: 700; color: #2d3748; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.result-author { font-size: 12px; color: var(--text-sub); margin-top: 2px; }
.add-to-lib-btn { padding: 8px 12px; font-size: 12px; border-radius: 6px; border: none; background: var(--primary); color: #fff; font-weight: 700; cursor: pointer; white-space: nowrap; }
.add-to-lib-btn:disabled { background: #cbd5e0; cursor: default; }


/* Collapsible Drawer Panel for Search & Action Buttons */
.drawer-toggle-wrap {
  margin-bottom: 12px;
}

.drawer-toggle-btn {
  width: 100%;
  padding: 10px 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

.drawer-toggle-btn:hover {
  background: #edf2f7;
  border-color: #cbd5e0;
}

.drawer-toggle-text {
  display: flex;
  align-items: center;
  gap: 8px;
}

.drawer-toggle-indicator {
  font-size: 10px;
  background: #feebc8;
  color: #744210;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 700;
}

#drawer-chevron-icon {
  font-size: 16px;
  transition: transform 0.3s ease;
}

.menu-drawer-panel {
  max-height: 1000px;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0, 1, 0, 1), opacity 0.25s ease, margin 0.25s ease;
  opacity: 1;
  margin-bottom: 16px;
}

.menu-drawer-panel.collapsed {
  max-height: 0;
  opacity: 0;
  margin-bottom: 0;
  pointer-events: none;
}

#drawer-chevron-icon.open {
  transform: rotate(180deg);
}

/* Tool Tab: New Releases Checker Styles */
.tool-icon-new-releases {
  font-size: 32px;
  color: #dd6b20;
}

.new-releases-tool-box {
  background: #fffaf0;
  border: 1px solid #feebc8;
}

.new-releases-results {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.new-release-card {
  display: flex;
  gap: 12px;
  padding: 12px;
  background: #ffffff;
  border: 1px solid #feebc8;
  border-radius: 8px;
  align-items: center;
}

.new-release-cover {
  width: 44px;
  height: 64px;
  object-fit: cover;
  border-radius: 4px;
  background: #e2e8f0;
  flex-shrink: 0;
}

.new-release-info {
  flex: 1;
  min-width: 0;
}

.new-release-title {
  font-size: 13px;
  font-weight: 700;
  color: #2d3748;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.new-release-sub {
  font-size: 11px;
  color: var(--text-sub);
  margin-top: 2px;
}

.new-release-date {
  font-size: 11px;
  color: #dd6b20;
  font-weight: 700;
  margin-top: 2px;
}

.new-release-actions {
  display: flex;
  flex-direction: column;
  gap: 4px;
}


.new-release-mode-selector {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: #ffffff;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid #feebc8;
}

.mode-radio-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  color: #2d3748;
  cursor: pointer;
}

.mode-radio-label input[type="radio"] {
  accent-color: #dd6b20;
}