/* RX Compare Tool - Plugin Japan */
/* メインカラー: #b4bcfd (ライトラベンダー) / #42388e (ダークインディゴ) */

:root {
  --color-primary: #42388e;
  --color-primary-light: #b4bcfd;
  --color-primary-dark: #2e2766;
  --color-primary-bg: #f3f4ff;
  --color-text: #222;
  --color-text-mute: #666;
  --color-text-faint: #999;
  --color-bg: #ffffff;
  --color-bg-soft: #fafafa;
  --color-border: #e2e4f0;
  --color-warning: #cf2e2e;
  --color-success: #1f8a4f;

  --shadow-card: 0 2px 12px rgba(66, 56, 142, 0.08);
  --shadow-card-hover: 0 6px 24px rgba(66, 56, 142, 0.16);
  --radius-card: 12px;
  --radius-btn: 6px;

  --font-base: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg-soft);
  -webkit-text-size-adjust: 100%;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== Header ===== */
.site-header {
  background: var(--color-primary-dark);
  border-bottom: 1px solid var(--color-primary);
  padding: 16px 0;
  color: #fff;
}
.site-header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
}
.site-logo {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
}
.site-logo img {
  display: block;
  width: 180px;
  height: auto;
  max-height: 50px;
  object-fit: contain;
}
.site-titles {
  flex: 1;
  border-left: 1px solid rgba(255,255,255,0.18);
  padding-left: 24px;
}
.site-title {
  margin: 0 0 4px;
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: #fff;
}
.site-subtitle {
  margin: 0;
  font-size: 13px;
  color: rgba(255,255,255,0.85);
}
.site-subtitle strong {
  color: var(--color-primary-light);
  font-weight: 700;
}
.site-title {
  cursor: pointer;
  transition: opacity 0.15s;
}
.site-title:hover {
  opacity: 0.85;
}
.site-title-beta {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 8px;
  background: var(--color-warning);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  border-radius: 4px;
  vertical-align: middle;
  position: relative;
  top: -2px;
}
.data-meta strong {
  color: var(--color-warning);
  font-weight: 700;
}
.site-disclosure {
  margin: 6px 0 0;
  text-align: right;
  font-size: 10px;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.02em;
  padding: 0 20px;
}
@media (max-width: 600px) {
  .site-disclosure { font-size: 9px; text-align: left; }
}

/* ===== Selectors (initial-state hero) ===== */
.selector-section {
  background: linear-gradient(180deg, var(--color-primary-bg) 0%, #fff 100%);
  padding: 48px 0 36px;
  border-bottom: 1px solid var(--color-border);
  transition: padding 0.3s;
}
.selector-section.is-compact {
  padding: 20px 0;
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.selector-section.is-compact .selector-heading,
.selector-section.is-compact .selector-help {
  display: none;
}
.selector-heading {
  margin: 0 0 6px;
  font-size: 26px;
  color: var(--color-primary-dark);
  text-align: center;
  letter-spacing: -0.01em;
}
.selector-help {
  margin: 0 0 28px;
  text-align: center;
  color: var(--color-text-mute);
  font-size: 14px;
}

.selector-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: flex-end;
  max-width: 720px;
  margin: 0 auto;
}
.selector-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
  min-width: 260px;
}
.selector-section.is-compact .selector-row {
  max-width: 100%;
  justify-content: flex-start;
  align-items: center;
}
.selector-section.is-compact .selector-group {
  min-width: 220px;
  flex: 0 1 280px;
}

.selector-group label {
  font-size: 14px;
  color: var(--color-primary-dark);
  font-weight: 700;
  letter-spacing: 0.02em;
}
.selector-group select {
  font-family: inherit;
  font-size: 20px;
  padding: 16px 50px 16px 20px;
  border: 2px solid var(--color-primary-light);
  border-radius: 8px;
  background: #fff;
  color: var(--color-primary-dark);
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
  font-weight: 700;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='%2342388e'><path d='M7 10l5 5 5-5z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 16px center;
  box-shadow: 0 1px 4px rgba(66, 56, 142, 0.06);
}
.selector-group select:hover {
  border-color: var(--color-primary);
  box-shadow: 0 2px 12px rgba(66, 56, 142, 0.12);
}
.selector-group select:active {
  transform: translateY(1px);
}
.selector-section.is-compact .selector-group select {
  font-size: 17px;
  padding: 12px 42px 12px 14px;
  border-width: 2px;
  font-weight: 700;
}
.selector-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(180, 188, 253, 0.4);
}

.selector-current {
  margin: 24px auto 0;
  max-width: 720px;
  text-align: center;
  padding: 10px 14px;
  background: #fff;
  border: 1px solid var(--color-primary-light);
  border-radius: var(--radius-btn);
  color: var(--color-primary-dark);
  font-size: 14px;
  font-weight: 600;
}
.selector-section.is-compact .selector-current {
  display: none;
}

/* ===== Empty state ===== */
.empty-state {
  padding: 60px 0 80px;
}
.empty-state-box {
  text-align: center;
  padding: 60px 20px;
  background: #fff;
  border-radius: var(--radius-card);
  border: 2px dashed var(--color-primary-light);
  max-width: 560px;
  margin: 0 auto;
}
.empty-state-icon {
  font-size: 48px;
  color: var(--color-primary-light);
  margin-bottom: 12px;
  font-weight: 700;
  line-height: 1;
}
.empty-state-text {
  margin: 0;
  color: var(--color-primary-dark);
  font-size: 16px;
  font-weight: 600;
}

/* ===== Result section ===== */
.result-section {
  padding: 36px 0 48px;
}
.result-heading {
  margin: 0 0 6px;
  font-size: 22px;
  color: var(--color-primary-dark);
}
.result-note {
  margin: 0;
  font-size: 13px;
  color: var(--color-text-mute);
  line-height: 1.7;
}
.result-head-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.sort-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 4px;
  font-size: 13px;
  flex-shrink: 0;
}
.sort-toggle-label {
  padding: 0 8px 0 4px;
  color: var(--color-text-mute);
  font-weight: 600;
}
.sort-toggle-btn {
  font-family: inherit;
  font-size: 13px;
  padding: 7px 14px;
  border: none;
  background: transparent;
  color: var(--color-text-mute);
  cursor: pointer;
  border-radius: 5px;
  font-weight: 600;
  transition: background 0.15s, color 0.15s;
}
.sort-toggle-btn:hover {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}
.sort-toggle-btn.is-active {
  background: var(--color-primary);
  color: #fff;
}

.cards-grid {
  display: grid;
  gap: 16px;
  /* Column count is controlled via .cards-grid--cols-N class (set by JS) */
}
.cards-grid--cols-2 { grid-template-columns: repeat(2, 1fr); }
.cards-grid--cols-3 { grid-template-columns: repeat(3, 1fr); }
.cards-grid--cols-4 { grid-template-columns: repeat(4, 1fr); }

/* ===== Card ===== */
.card {
  background: #fff;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s;
}
.card:hover {
  box-shadow: var(--shadow-card-hover);
}
.card.is-downgrade {
  opacity: 0.78;
}

.card-header {
  padding: 20px 22px 18px;
  background: linear-gradient(180deg, var(--color-primary-bg) 0%, #fff 100%);
  border-bottom: 1px solid var(--color-border);
  /* All cards keep the same header height so feature rows align across cards (downgrade warning extends only on certain cards). */
  min-height: 300px;
  display: flex;
  flex-direction: column;
}

/* ----- Source card (leftmost column) ----- */
/* No border to keep inner content width identical to target cards (avoids
   text wrap differences that would break row alignment). */
.source-card {
  background: #fafbff;
  box-shadow: 0 0 0 1px #d8dcef;
}
.source-card:hover { box-shadow: 0 2px 12px rgba(66, 56, 142, 0.08); }
.source-card .card-header {
  background: linear-gradient(180deg, #eef0fa 0%, #fafbff 100%);
}
.source-card .card-edition-badge.source-badge {
  background: #6e6f7d;
}
.source-card .card-title {
  color: #3a3b4d;
}
.source-card .source-note {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--color-text-mute);
  line-height: 1.6;
}
.card-edition-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: #fff;
  background: var(--color-primary);
  padding: 2px 10px;
  border-radius: 12px;
  margin-bottom: 8px;
  text-transform: uppercase;
}
.card-title {
  margin: 0 0 12px;
  font-size: 22px;
  color: var(--color-primary-dark);
  letter-spacing: -0.01em;
}
.card-pricing {
  margin-bottom: 12px;
}
.price-line {
  font-size: 13px;
  color: var(--color-text-mute);
  line-height: 1.5;
}
.price-line .price-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
}
.price-line--regular.has-sale .price-value {
  text-decoration: line-through;
  color: var(--color-text-mute);
  font-weight: 400;
  font-size: 15px;
}
.price-line--sale {
  color: var(--color-warning);
}
.price-line--sale .price-value {
  color: var(--color-warning);
  font-size: 22px;
}
.price-label {
  margin: 4px 0 0;
  font-size: 12px;
  color: var(--color-text-mute);
}
.buy-btn {
  display: block;
  text-align: center;
  text-decoration: none;
  padding: 11px 16px;
  font-weight: 700;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-btn);
  transition: background 0.15s;
  font-size: 15px;
}
.buy-btn:hover {
  background: var(--color-primary-dark);
}
.buy-btn.is-disabled {
  background: #ccc;
  cursor: not-allowed;
  pointer-events: none;
}
.buy-btn.is-placeholder {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  cursor: default;
  pointer-events: none;
  font-size: 13px;
  font-weight: 600;
}

/* ===== Paths button (全購入パスを比較) ===== */
.paths-btn {
  display: block;
  width: 100%;
  margin-top: 8px;
  padding: 9px 12px;
  background: #fff;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary-light);
  border-radius: var(--radius-btn);
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.paths-btn:hover {
  background: var(--color-primary-bg);
  border-color: var(--color-primary);
}

/* ===== Paths Modal ===== */
.paths-modal[hidden] {
  display: none !important;
}
.paths-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: modalFadeIn 0.18s ease-out;
}
@keyframes modalFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.paths-modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(46, 39, 102, 0.45);
  backdrop-filter: blur(2px);
  cursor: pointer;
}
.paths-modal-content {
  position: relative;
  background: #fff;
  border-radius: 12px;
  max-width: 760px;
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
  animation: modalSlideUp 0.22s ease-out;
}
@keyframes modalSlideUp {
  from { transform: translateY(20px); opacity: 0.6; }
  to   { transform: translateY(0); opacity: 1; }
}
.paths-modal-head {
  position: sticky;
  top: 0;
  background: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px 14px;
  border-bottom: 1px solid var(--color-border);
  z-index: 1;
}
.paths-modal-title {
  margin: 0;
  font-size: 19px;
  color: var(--color-primary-dark);
  letter-spacing: -0.01em;
}
.paths-modal-close {
  background: none;
  border: none;
  font-size: 28px;
  line-height: 1;
  color: var(--color-text-mute);
  cursor: pointer;
  padding: 0 4px;
  font-family: inherit;
}
.paths-modal-close:hover {
  color: var(--color-primary-dark);
}
.paths-modal-help {
  margin: 0;
  padding: 12px 24px;
  font-size: 12px;
  color: var(--color-text-mute);
  background: var(--color-bg-soft);
  line-height: 1.7;
}
.paths-modal-help strong {
  color: var(--color-primary);
  font-weight: 700;
}

/* ===== Paths list ===== */
.paths-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.path-item {
  display: grid;
  grid-template-columns: 40px 1fr auto;
  gap: 14px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--color-border);
  align-items: center;
  position: relative;
  transition: background 0.15s;
}
.path-item:hover {
  background: var(--color-primary-bg);
}
.path-item:last-child {
  border-bottom: none;
}
.path-item.is-applicable {
  background: linear-gradient(90deg, rgba(180,188,253,0.18) 0%, rgba(180,188,253,0.04) 100%);
  border-left: 3px solid var(--color-primary);
  padding-left: 21px;
}
.path-rank {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  text-align: center;
}
.path-main {
  min-width: 0;
}
.path-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}
.path-price {
  font-size: 19px;
  font-weight: 700;
  color: var(--color-text);
}
.path-price.has-sale-original {
  text-decoration: line-through;
  color: var(--color-text-faint);
  font-weight: 500;
  font-size: 13px;
  margin-left: 4px;
}
.path-price.is-sale {
  color: var(--color-warning);
}
.path-badges {
  display: inline-flex;
  gap: 4px;
  flex-wrap: wrap;
}
.path-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.path-badge--applicable { background: var(--color-primary); color: #fff; }
.path-badge--edu { background: #fff3cd; color: #6b4d00; border: 1px solid #ffc107; }
.path-badge--bundle { background: #e0f5ec; color: #1f8a4f; border: 1px solid #1f8a4f; }
.path-badge--cheapest-applicable { background: var(--color-warning); color: #fff; }
.path-badge--other-product { background: #f6e8ff; color: #6b3e9e; border: 1px solid #b287d8; }
.path-badge--anyone { background: #f1f2f6; color: var(--color-text-mute); }
.path-label {
  margin: 0;
  font-size: 13px;
  color: var(--color-text);
  line-height: 1.5;
}
.path-product-name {
  margin: 0 0 2px;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary-dark);
  letter-spacing: -0.01em;
  line-height: 1.35;
}
.path-variant {
  margin: 0;
  font-size: 13px;
  color: var(--color-text);
  line-height: 1.5;
}
.path-variant strong {
  color: var(--color-primary-dark);
  font-weight: 700;
  background: rgba(180, 188, 253, 0.25);
  padding: 1px 5px;
  border-radius: 3px;
}
.path-variant:empty { display: none; }
.path-bundle-extras {
  margin: 4px 0 0;
  font-size: 11px;
  color: var(--color-text-mute);
  line-height: 1.5;
}
.path-bundle-extras::before {
  content: "📦 同梱: ";
  color: #1f8a4f;
  font-weight: 700;
}
.path-action {
  flex-shrink: 0;
}
.path-buy-btn {
  display: inline-block;
  padding: 7px 14px;
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  border-radius: 5px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}
.path-buy-btn:hover { background: var(--color-primary-dark); }
.path-buy-btn.is-placeholder {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  pointer-events: none;
}
.path-buy-btn.is-disabled-edu {
  background: #ffc107;
  color: #6b4d00;
}

/* ===== Hover diff tooltip — triggered only on right-side action area ===== */
.path-tooltip {
  display: none;
  position: absolute;
  z-index: 10;
  top: calc(100% + 4px);
  right: 24px;
  width: 360px;
  max-width: calc(100% - 48px);
  background: #fff;
  border: 1px solid var(--color-primary-light);
  border-left: 3px solid var(--color-primary);
  border-radius: 6px;
  padding: 12px 14px;
  font-size: 12px;
  color: var(--color-text);
  box-shadow: 0 6px 20px rgba(66,56,142,0.18);
  line-height: 1.55;
}
.path-action:hover ~ .path-tooltip,
.path-tooltip:hover {
  display: block;
}
.path-tooltip-header {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}
.path-tooltip-row {
  display: block;
  padding: 8px 0;
}
.path-tooltip-row + .path-tooltip-row {
  border-top: 1px dotted var(--color-border);
}
.path-tooltip-row-top {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 2px;
}
.path-tooltip-diff {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-warning);
  white-space: nowrap;
}
.path-tooltip-prod {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.3;
}
.path-tooltip-variant {
  font-size: 11px;
  color: var(--color-text-mute);
  margin: 0 0 0 0;
  line-height: 1.4;
  padding-left: 4px;
}
.path-tooltip-empty {
  color: var(--color-text-mute);
  font-style: italic;
}

@media (max-width: 600px) {
  .path-item { grid-template-columns: 28px 1fr; padding: 12px 14px; }
  .path-action { grid-column: 1 / -1; text-align: right; margin-top: 4px; }
  .paths-modal-content { max-height: 92vh; border-radius: 8px; }
  .paths-modal-head { padding: 14px 16px; }
  .paths-modal-help { padding: 10px 16px; }
  .path-tooltip { left: 14px; right: 14px; }
}
.downgrade-warning {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--color-warning);
  padding: 6px 10px;
  background: #fdf0f2;
  border-left: 3px solid var(--color-warning);
  border-radius: 3px;
}

.card-body {
  padding: 6px 22px 22px;
  flex: 1;
}
.card-summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding: 14px 0 10px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 4px;
  min-height: 50px;
}
.card-summary-title {
  margin: 0;
  font-size: 14px;
  color: var(--color-primary-dark);
  font-weight: 700;
  letter-spacing: 0.01em;
}
.card-summary-count {
  font-size: 13px;
  color: var(--color-text-mute);
  font-weight: 500;
}
.card-summary-count strong {
  color: var(--color-primary);
  font-weight: 700;
  font-size: 15px;
}

.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

/* ----- Tier separator (cross-card aligned) ----- */
.tier-separator {
  list-style: none;
  padding: 18px 0 8px;
  margin: 0;
  min-height: 44px;
  display: flex;
  align-items: flex-end;
}
.tier-separator-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--color-primary-light);
  width: 100%;
}

/* ----- Feature item (cross-card aligned) ----- */
.feature-item {
  padding: 14px 0 12px;
  border-bottom: 1px solid var(--color-border);
  /* Fixed min-height so each row aligns across the 3 cards */
  min-height: 100px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  transition: opacity 0.15s;
}
.feature-item:last-child {
  border-bottom: none;
}
.feature-item.state-absent {
  opacity: 0.4;
}
.feature-item.state-already {
  opacity: 0.65;
}
.feature-head {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: 8px;
  margin-bottom: 6px;
}
.feature-name {
  font-weight: 700;
  color: var(--color-primary-dark);
  font-size: 15px;
  letter-spacing: -0.005em;
  min-width: 0;
}
.feature-item.state-absent .feature-name {
  color: var(--color-text-faint);
  text-decoration: line-through;
  /* keep font-weight 700 to match other states — different weight changes text width
     and causes title to wrap to different number of lines, breaking row alignment */
}
.feature-status-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 4px;
  letter-spacing: 0.02em;
  flex-shrink: 0;
  white-space: nowrap;
}
.feature-status-badge.status-new {
  background: var(--color-primary);
  color: #fff;
}
.feature-status-badge.status-improved {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}
.feature-status-badge.status-rebuilt {
  background: #fff;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
  padding: 2px 9px;
}
.feature-status-badge.status-already {
  background: #f1f2f6;
  color: var(--color-text-faint);
  font-weight: 600;
}
.feature-status-badge.status-absent {
  background: transparent;
  color: var(--color-text-faint);
  /* outline doesn't take box space, so badge size remains identical to other states */
  outline: 1px dashed #c5c7d3;
  outline-offset: -1px;
  /* keep same padding (3px 9px) and font-weight (700) as default badge */
}
.feature-desc {
  margin: 0;
  font-size: 13px;
  color: var(--color-text-mute);
  line-height: 1.65;
}
.feature-item.state-absent .feature-desc {
  color: var(--color-text-faint);
}
.feature-item.state-already .feature-desc {
  color: var(--color-text-faint);
}
.feature-media {
  margin-top: 8px;
  min-height: 28px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}
.feature-media-dimmed {
  opacity: 0.35;
  pointer-events: none;
}
.feature-media-empty .feature-youtube,
.feature-media-empty .feature-youtube-note { visibility: hidden; }
.feature-youtube {
  display: inline-block;
  font-size: 12px;
  color: var(--color-primary);
  text-decoration: none;
  padding: 3px 10px;
  border: 1px solid var(--color-primary-light);
  border-radius: 3px;
  transition: background 0.15s;
}
.feature-youtube:hover {
  background: var(--color-primary-bg);
}
.feature-youtube::before {
  content: "▶ ";
  font-size: 10px;
}
.feature-youtube-note {
  display: inline-block;
  margin-left: 6px;
  font-size: 10px;
  color: var(--color-text-faint);
  font-style: italic;
}

.no-diff-note {
  margin: 8px 0;
  padding: 16px;
  text-align: center;
  background: var(--color-bg-soft);
  border-radius: 6px;
  color: var(--color-text-mute);
  font-size: 13px;
}

/* ===== Footer ===== */
.footer-info {
  padding: 24px 0;
  background: var(--color-bg-soft);
  border-top: 1px solid var(--color-border);
}
.data-meta {
  margin: 0;
  color: var(--color-text-mute);
  font-size: 13px;
  line-height: 1.7;
}
.data-meta a {
  color: var(--color-primary);
}
.site-footer {
  padding: 16px 0;
  background: var(--color-primary-dark);
  color: #fff;
  text-align: center;
  font-size: 13px;
}
.site-footer a {
  color: var(--color-primary-light);
}

/* ===== Swipe hint (visible only in carousel mode) ===== */
.swipe-hint { display: none; }

/* ===== Carousel navigation buttons (visible only in carousel mode) ===== */
.cards-carousel-wrap { position: relative; }
.carousel-nav {
  display: none; /* shown by media query */
  position: fixed; /* stay visible regardless of vertical scroll */
  top: 50vh;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  border: none;
  font-family: inherit;
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(66, 56, 142, 0.4);
  z-index: 50;
  transition: background 0.15s, opacity 0.15s, transform 0.1s;
}
.carousel-nav:hover { background: var(--color-primary-dark); }
.carousel-nav:active { transform: translateY(-50%) scale(0.95); }
.carousel-nav:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}
.carousel-nav--prev { left: 8px; }
.carousel-nav--next { right: 8px; }

/* Mouse drag indicator */
.cards-grid.is-dragging {
  cursor: grabbing !important;
  user-select: none;
  scroll-snap-type: none; /* disable snap during drag for smoother feel */
}
.cards-grid.is-dragging * {
  pointer-events: none; /* prevent accidental clicks while dragging */
}

/* ===== Responsive ===== */
/* Below 900px: switch to horizontal swipe carousel (one card visible at a time, swipe/scroll to next).
   This keeps multi-column layout for tablets and small laptops down to ~900px. */
@media (max-width: 900px) {
  .cards-grid,
  .cards-grid--cols-2,
  .cards-grid--cols-3,
  .cards-grid--cols-4 {
    display: flex !important;
    overflow-x: auto;
    overflow-y: visible;
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
    grid-template-columns: none !important;
    gap: 12px;
    /* Bleed to viewport edges for full-width swipe */
    margin: 0 -20px;
    padding: 0 20px 16px;
    scroll-padding-inline: 20px;
  }
  .cards-grid > .card {
    flex: 0 0 calc(100% - 36px); /* leave a small peek of next card */
    scroll-snap-align: start;
  }
  .cards-grid::-webkit-scrollbar { height: 6px; }
  .cards-grid::-webkit-scrollbar-track { background: transparent; }
  .cards-grid::-webkit-scrollbar-thumb {
    background: rgba(66, 56, 142, 0.25);
    border-radius: 3px;
  }
  /* Stacked layout no longer applies, so we need original min-height back to keep card-internal alignment within each card */
  .feature-item { min-height: 0; }
  .card-header { min-height: 0; }
  /* Swipe hint cue */
  .swipe-hint {
    display: block;
    text-align: center;
    font-size: 12px;
    color: var(--color-text-mute);
    margin-bottom: 12px;
    padding: 8px 12px;
    background: var(--color-primary-bg);
    border-radius: 6px;
  }
  .carousel-nav { display: block; }
  /* On very narrow screens, button on side is squeezed by content — use grab cursor on desktop only */
  .cards-grid { cursor: grab; }
  .cards-grid.is-dragging { cursor: grabbing; }
}
@media (max-width: 500px) {
  /* On very narrow phones, hide arrow buttons (touch swipe is enough, buttons obscure content) */
  .carousel-nav { display: none; }
}
@media (max-width: 960px) {
  .site-titles {
    border-left: none;
    padding-left: 0;
  }
  .site-header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .selector-heading { font-size: 22px; }
  .selector-section { padding: 32px 0 24px; }
}

@media (max-width: 600px) {
  .site-header { padding: 12px 0; }
  .site-title { font-size: 17px; }
  .site-subtitle { font-size: 12px; }
  .selector-heading { font-size: 19px; }
  .selector-section { padding: 24px 0 20px; }
  .selector-group { min-width: 100%; }
  .result-section { padding: 24px 0; }
  .card-header { padding: 16px 16px 14px; }
  .card-body { padding: 14px 16px 18px; }
  .card-title { font-size: 19px; }
  .empty-state { padding: 30px 0 50px; }
  .empty-state-box { padding: 40px 20px; }
}