/* ============================================================
   横スクロール防止
   ============================================================ */
#main-content {
  overflow-x: hidden;
}

/* ============================================================
   PAGE HEADER レイアウト
   ============================================================ */
.page-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.page-header-controls {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-4);
}

.page-header-controls__row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* 1152px 以下でコントロール行を折り返し許可 */
@media (max-width: 1152px) {
  .page-header-controls {
    align-items: flex-start;
    width: 100%;
  }
  .page-header-controls__row {
    justify-content: flex-start;
  }
  #books-meta {
    text-align: left !important;
  }
}

/* ============================================================
   Free / Paid toggle
   ============================================================ */
.chart-toggle {
  display: inline-flex;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.chart-btn {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-muted);
  padding: var(--space-2) var(--space-4);
  border: none;
  border-radius: 0;
  background: none;
  cursor: pointer;
  transition: color var(--duration) var(--ease-out),
    background var(--duration) var(--ease-out);
  white-space: nowrap;
}

.chart-btn + .chart-btn {
  border-left: 1px solid var(--color-line);
}

.chart-btn[aria-pressed=true] {
  color: var(--color-white);
  background: var(--color-ink);
}

.chart-btn:not([aria-pressed=true]):hover {
  color: var(--color-ink);
  background: var(--color-surface);
}

/* ============================================================
   Your Region button
   ============================================================ */
.your-region-btn {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-ink);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-4);
  cursor: pointer;
  white-space: nowrap;
  transition: border-color var(--duration) var(--ease-out),
    background var(--duration) var(--ease-out);
}

.your-region-btn:hover {
  border-color: var(--color-mid);
  background: var(--color-white);
}

/* ============================================================
   Country combobox
   ============================================================ */
.country-combobox {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.country-search-input {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-ink);
  cursor: text;
  min-width: 160px;
  transition: border-color var(--duration) var(--ease-out);
}

.country-search-input:hover { border-color: var(--color-mid); }
.country-search-input:focus {
  outline: 2px solid var(--color-ink);
  outline-offset: 2px;
  border-color: var(--color-ink);
}
.country-search-input::placeholder {
  color: var(--color-muted);
  font-weight: var(--weight-normal);
}

.country-listbox {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 220px;
  max-height: 280px;
  overflow-y: auto;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 16px rgba(0,0,0,.08);
  list-style: none;
  margin: 0;
  padding: var(--space-1) 0;
  z-index: 100;
}

.country-listbox li {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-ink);
  cursor: pointer;
  transition: background var(--duration) var(--ease-out);
}
.country-listbox li:hover { background: var(--color-surface); }
.country-listbox li[aria-selected=true] {
  background: var(--color-surface);
  font-weight: var(--weight-medium);
}
.country-listbox[data-empty]::after {
  content: 'No results';
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-muted);
}

@media (max-width: 640px) {
  .chart-toggle,
  .country-combobox,
  .your-region-btn { width: 100%; }
  .chart-btn { flex: 1; justify-content: center; }
  .country-search-input { width: 100%; }
  .country-listbox { right: 0; }
}

/* ============================================================
   MAJOR COUNTRY BUTTONS
   ============================================================ */
.major-countries-bar {
  border-bottom: 1px solid var(--color-line);
  padding-block: var(--space-4);
  overflow: hidden;
}

.major-countries {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

.country-quick-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  color: var(--color-ink);
  font-size: var(--text-sm);
  cursor: pointer;
  white-space: nowrap;
  transition: border-color .15s ease, background .15s ease, color .15s ease;
  line-height: 1;
}

.country-quick-btn:hover {
  border-color: var(--color-mid);
  background: var(--color-surface);
}

/* active 状態 */
.country-quick-btn.is-active,
.country-quick-btn[aria-pressed="true"] {
  border-color: var(--color-ink);
  background: var(--color-ink);
  color: var(--color-white);
}

/* 上位3カ国：やや大きく・ボーダー強調 */
.country-quick-btn--featured {
  font-weight: var(--weight-medium);
  padding: var(--space-2) var(--space-4);
}

.country-quick-btn--featured:not(.is-active):not([aria-pressed="true"]) {
  border-color: var(--color-mid);
}

.cqb-code {
  font-weight: var(--weight-semibold);
  font-size: var(--text-xs);
  letter-spacing: .02em;
}

.cqb-name {
  font-size: var(--text-xs);
  opacity: .72;
}

.country-quick-btn.is-active .cqb-name,
.country-quick-btn[aria-pressed="true"] .cqb-name {
  opacity: .9;
}

/* タブレット: 5列グリッド */
@media (max-width: 900px) {
  .major-countries {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
  }
  .country-quick-btn { justify-content: center; }
}

/* スマホ: 3列グリッド */
@media (max-width: 600px) {
  .major-countries { grid-template-columns: repeat(3, 1fr); }
}

/* 極小: 2列グリッド */
@media (max-width: 380px) {
  .major-countries { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================================
   Book grid — 固定カラム数でレスポンシブ
   ============================================================ */
.books-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
  padding-block-start: var(--space-6);
  margin: 0;
}

@media (max-width: 1280px) { .books-grid { grid-template-columns: repeat(5, 1fr); } }
@media (max-width: 1024px) { .books-grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 768px)  { .books-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 480px)  { .books-grid { grid-template-columns: repeat(2, 1fr); } }

/* ============================================================
   Book card
   ============================================================ */
.book-card {
  list-style: none;
  min-width: 0;
}

.book-card__link {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform .2s ease, box-shadow .2s ease;
}
.book-card__link:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 28px rgba(0,0,0,.14);
}

.book-card__cover {
  position: relative;
  width: 100%;
  padding-bottom: 150%; /* 2:3 ratio — 全ブラウザ安定 */
  background: var(--color-surface);
  overflow: hidden;
  border-radius: var(--radius-sm);
}

.book-card__cover img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain; /* 全表紙を完全表示 */
  display: block;
  transition: transform .3s ease;
}
.book-card__link:hover .book-card__cover img { transform: scale(1.03); }

.book-card__rank {
  position: absolute;
  top: var(--space-2);
  left: var(--space-2);
  font-size: 11px;
  font-weight: var(--weight-medium);
  line-height: 1;
  color: #fff;
  background: rgba(0,0,0,.52);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-radius: 4px;
  padding: 3px 6px;
  font-feature-settings: "tnum";
}

.book-card__body { padding: var(--space-2) var(--space-1); }

.book-card__title {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-ink);
  line-height: var(--leading-snug);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0 0 var(--space-1);
}

.book-card__artist {
  font-size: var(--text-xs);
  color: var(--color-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 0;
}

/* ============================================================
   Book Modal
   ============================================================ */
.modal-overlay[hidden] { display: none; }

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.modal-container {
  position: relative;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  max-width: 580px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 24px 64px rgba(0,0,0,.22);
}

.modal-close {
  position: sticky;
  top: var(--space-4);
  float: right;
  margin: var(--space-4) var(--space-4) 0 0;
  width: 32px;
  height: 32px;
  border: none;
  background: var(--color-surface);
  border-radius: 50%;
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
  color: var(--color-ink);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  transition: background var(--duration) var(--ease-out);
}
.modal-close:hover { background: var(--color-line); }

.modal-inner {
  padding: var(--space-6) var(--space-8) var(--space-8);
  clear: both;
}

.modal-status {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-16);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.modal-book-header {
  display: flex;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.modal-cover { flex-shrink: 0; width: 130px; }
.modal-cover img {
  width: 100%;
  border-radius: var(--radius-sm);
  box-shadow: 0 6px 20px rgba(0,0,0,.18);
  display: block;
}

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

.modal-title {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-snug);
  color: var(--color-ink);
  margin: 0 0 var(--space-2);
}

.modal-artist {
  font-size: var(--text-sm);
  color: var(--color-mid);
  margin: 0 0 var(--space-3);
}

.modal-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}
.modal-badge {
  font-size: var(--text-xs);
  color: var(--color-muted);
  background: var(--color-surface);
  border-radius: 4px;
  padding: 2px 8px;
}

.modal-rating {
  font-size: var(--text-sm);
  color: var(--color-mid);
  margin: 0 0 var(--space-2);
}
.modal-rating strong { color: var(--color-ink); }

.modal-price {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-ink);
  margin: 0;
}

.modal-desc {
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-mid);
  border-top: 1px solid var(--color-line);
  padding-top: var(--space-5);
  margin-bottom: var(--space-6);
  max-height: 180px;
  overflow-y: auto;
}

.modal-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.modal-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: opacity .2s ease, transform .1s ease;
  white-space: nowrap;
}
.modal-btn:hover  { opacity: .85; }
.modal-btn:active { transform: scale(.97); }
.modal-btn--apple  { background: #000; color: #fff; }
.modal-btn--amazon { background: #FF9900; color: #111; }

@media (max-width: 520px) {
  .modal-book-header { flex-direction: column; }
  .modal-cover { width: 110px; }
  .modal-inner { padding: var(--space-5) var(--space-5) var(--space-6); }
  .modal-actions { flex-direction: column; }
  .modal-btn { justify-content: center; }
}