/* ===== Design Tokens =====
   見た目の値はすべてここで管理する。各ルールは var(--*) で参照すること。
   - 色: テーマ(ダーク/ライト)で値が変わるもの
   - 文字: --font-* / --fs-* / --fw-*
   - 余白: --sp-N（N = px 値）
   - 角丸: --radius-*
   ========================================================== */
:root {
  /* --- Color: アクセント --- */
  --accent: #c8f000;
  --accent-dim: rgba(200, 240, 0, 0.12);
  --accent-hover: #d8ff20;
  --on-accent: #000;            /* アクセント色の上に載る文字色 */

  /* --- Color: 面・文字 --- */
  --bg: #111418;
  --bg-secondary: #1a1e26;
  --sidebar-bg: rgba(18, 22, 30, 0.92);
  --card-bg: #1c2030;
  --text-primary: #e8edf5;
  --text-secondary: #7a8494;

  /* --- Color: 線・状態 --- */
  --border: rgba(255, 255, 255, 0.07);
  --border-strong: rgba(255, 255, 255, 0.15);   /* 点線ボタン・ホバー時の枠 */
  --hover-bg: rgba(255, 255, 255, 0.05);        /* 行・ボタンのホバー */
  --hover-bg-strong: rgba(255, 255, 255, 0.08); /* 小さいアイコンボタンのホバー */
  --fill-subtle: rgba(255, 255, 255, 0.1);      /* バッジなどの塗り */
  --danger: #ff6b6b;

  /* --- Color: 影・オーバーレイ（テーマ共通の暗幕） --- */
  --shadow: rgba(0, 0, 0, 0.5);
  --modal-bg: rgba(0, 0, 0, 0.85);
  --on-media: #fff;             /* 画像の上に載る文字・アイコン */

  /* --- Typography --- */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", sans-serif;
  --fs-2xs: 0.65rem;
  --fs-xs: 0.7rem;
  --fs-sm: 0.75rem;
  --fs-md: 0.82rem;
  --fs-base: 0.875rem;
  --fs-lg: 1rem;
  --fs-xl: 1.05rem;
  --fs-display: 2.8rem;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  /* --- Spacing (px スケール) --- */
  --sp-2: 2px;
  --sp-4: 4px;
  --sp-6: 6px;
  --sp-8: 8px;
  --sp-10: 10px;
  --sp-12: 12px;
  --sp-14: 14px;
  --sp-16: 16px;
  --sp-20: 20px;
  --sp-24: 24px;

  /* --- Radius --- */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  /* --- Layout --- */
  --topbar-height: 54px;        /* 右カラム上部の帯（見出し・パンくず）の高さ */
  --sidebar-min-width: 180px;   /* サイドバーは中身の幅に合わせる（この範囲内） */
  --sidebar-max-width: 320px;
  --tree-indent: 10px;          /* フォルダ構成ツリーの1段あたりの字下げ */
  --tree-arrow-size: 14px;
  --tree-row-height: 28px;

  /* --- Motion --- */
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --accent: #557000;
  --accent-dim: rgba(85, 112, 0, 0.12);
  --accent-hover: #455a00;
  --on-accent: #fff;
  --bg: #f0f2f5;
  --bg-secondary: #ffffff;
  --sidebar-bg: rgba(250, 251, 253, 0.94);
  --card-bg: #ffffff;
  --text-primary: #1a1d26;
  --text-secondary: #5f6778;
  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.14);
  --hover-bg: rgba(0, 0, 0, 0.04);
  --hover-bg-strong: rgba(0, 0, 0, 0.06);
  --fill-subtle: rgba(0, 0, 0, 0.08);
  --danger: #d93838;
  --shadow: rgba(0, 0, 0, 0.12);
  --modal-bg: rgba(0, 0, 0, 0.72);
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
button { font-family: inherit; }

body {
  font-family: var(--font-family);
  background: var(--bg);
  color: var(--text-primary);
  height: 100vh;
  overflow: hidden;
  transition: background var(--transition), color var(--transition);
}

/* ===== Layout ===== */
.app-container { display: flex; height: 100vh; }

/* ===== Sidebar ===== */
.sidebar {
  width: max-content;
  min-width: var(--sidebar-min-width);
  max-width: var(--sidebar-max-width);
  background: var(--sidebar-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1), background var(--transition);
  overflow: hidden;
}

/* 隴崢€陝・ｸ槫密霑･・ｶ隲ｷ繝ｻ*/
.sidebar.collapsed {
  width: 0px;
  min-width: 0;
  border-right: none;
}
/* 郢ｧ・ｿ郢ｧ・ｰ驍ｱ・ｨ鬮ｮ繝ｻ・ｸ・ｭ霑･・ｶ隲ｷ繝ｻ*/
.sidebar.editing-tag {
  width: 340px;
}
.sidebar.collapsed .sidebar-header,
.sidebar.collapsed .sidebar-content {
  opacity: 0;
  visibility: hidden;
}
.sidebar-title-text {
  transition: opacity 0.2s ease;
  white-space: nowrap;
  overflow: hidden;
}

.sidebar-header {
  padding: var(--sp-20) var(--sp-16) var(--sp-14);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-8);
  transition: opacity 0.2s ease, visibility 0.2s;
  overflow: hidden;
}

.sidebar-header h1 {
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  letter-spacing: 0.08em;
  color: var(--text-primary);
  text-transform: uppercase;
}

.btn-sidebar-toggle {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: var(--sp-4) var(--sp-6);
  border-radius: var(--radius-sm);
  transition: color var(--transition), transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), background var(--transition);
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.btn-sidebar-toggle:hover { color: var(--text-primary); background: var(--accent-dim); }
.sidebar.collapsed .btn-sidebar-toggle svg {
  transform: rotate(180deg);
}

.btn-theme {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: var(--fs-lg);
  padding: var(--sp-4);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  display: flex;
  align-items: center;
}
.btn-theme:hover { color: var(--text-primary); background: var(--accent-dim); }

.sidebar-content {
  padding: var(--sp-12) var(--sp-10);
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  transition: opacity 0.2s ease, visibility 0.2s;
}

/* 郢晢ｽ｡郢ｧ・､郢晢ｽｳ郢ｧ・ｳ郢晢ｽｳ郢昴・ﾎｦ郢昴・・ｼ繝ｻull Bar陝・ｽｾ陟｢諛ｶ・ｼ繝ｻ*/
.main-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  position: relative;
}

.sidebar-pull-btn {
  position: absolute;
  bottom: 30px;
  left: 0;
  width: 24px;
  height: 48px;
  background: var(--sidebar-bg);
  border: 1px solid var(--border);
  border-left: none;
  border-radius: 0 12px 12px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  /* 郢晢ｽ｢郢晢ｽｼ郢敖€郢晢ｽｫ(z-index:1200)郢ｧ蛹ｻ・願抄蠑ｱ・･邵ｲ繝ｻﾂ€螢ｼ・ｸ・ｸUI郢ｧ蛹ｻ・企ｬｮ蛟･・櫁屐・､ */
  z-index: 100;
  box-shadow: 3px 0 8px rgba(0,0,0,0.1);
  color: var(--text-secondary);
  transition: background var(--transition), color var(--transition);
}
.sidebar-pull-btn:hover { background: var(--accent-dim); color: var(--text-primary); }
.sidebar-pull-btn svg { transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1); }
.sidebar.collapsed + .main-content .sidebar-pull-btn svg { transform: rotate(180deg); }

.category-row {
  display: flex;
  gap: var(--sp-4);
  margin-bottom: var(--sp-8);
}

/* Category View Button */
.btn-category-view {
  width: 100%;
  padding: 7px var(--sp-10);
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  display: flex;
  align-items: center;
  margin-bottom: 3px;
  transition: all var(--transition);
}
.btn-category-view:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

/* Add folder button row */
.tag-actions-row {
  display: flex;
  align-items: stretch; /* Make children same height */
  gap: var(--sp-6);
  margin-bottom: var(--sp-8);
}

.btn-add-tag-icon.drag-over { background: var(--accent-dim); outline: 2px dashed var(--accent); }


/* Bottom Controls */
.bottom-controls {
  margin-top: auto;
  border-top: 1px solid var(--border);
  padding-top: var(--sp-8);
}
.btn-settings {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 50%;
  padding: var(--sp-4);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.btn-settings:hover {
  background: rgba(128,128,128,0.1);
  color: var(--text-primary);
}

/* Trash Section (collapsible) */
.trash-section {
  padding-bottom: var(--sp-4);
}
.trash-toggle-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  padding: 5px var(--sp-10);
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  transition: color var(--transition);
}
.trash-toggle-btn:hover { color: var(--text-primary); }
.trash-label { flex: 1; text-align: left; }
.trash-toggle-btn.open { background: var(--accent-dim); }
.trash-list-wrapper {
  overflow: hidden;
  transition: max-height 0.25s cubic-bezier(0.4,0,0.2,1), opacity 0.2s ease;
  max-height: 300px;
  opacity: 1;
}
.trash-list-wrapper.collapsed {
  max-height: 0;
  opacity: 0;
}
.filter-mode-container {
  /* 闔�蜻磯共隲､・ｧ邵ｺ・ｮ邵ｺ貅假ｽ∫ｸｺ・ｫ隹ｿ荵昶・ */
}
.sidebar-filters-panel {
  padding: var(--sp-6) var(--sp-10);
  border-top: 1px solid var(--border);
}
.filter-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--sp-8);
  transition: opacity var(--transition);
}
.filter-row:last-child {
  margin-bottom: 0;
}
.filter-row#filter-target-container.disabled {
  opacity: 0.3;
  pointer-events: none;
}
.filter-label {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--text-secondary);
  flex-shrink: 0;
}

/* Multi-select toggle switch */
.multi-select-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}
.multi-select-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}
.multi-select-slider {
  position: relative;
  display: inline-block;
  width: 28px;
  height: 16px;
  background-color: var(--text-secondary);
  border-radius: var(--radius-pill);
  transition: background-color var(--transition);
}
.multi-select-slider::before {
  content: "";
  position: absolute;
  height: 12px;
  width: 12px;
  left: 2px;
  bottom: 2px;
  background-color: var(--bg-secondary);
  border-radius: 50%;
  transition: transform var(--transition);
}
.multi-select-toggle input:checked + .multi-select-slider {
  background-color: var(--accent);
}
.multi-select-toggle input:checked + .multi-select-slider::before {
  transform: translateX(12px);
}

.btn-settings {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 50%;
  padding: var(--sp-4);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.btn-settings:hover {
  background: rgba(128,128,128,0.1);
  color: var(--text-primary);
}


/* ===== Tag Tree ===== */
.tag-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  flex: 1;
}

.tag-item {
  padding: 7px var(--sp-10);
  border-radius: var(--radius-sm);
  cursor: grab;
  display: flex;
  align-items: center;
  gap: 7px;
  transition: background var(--transition), transform 0.18s cubic-bezier(0.4,0,0.2,1), opacity var(--transition), box-shadow var(--transition);
  position: relative;
  user-select: none;
  font-size: var(--fs-base);
  list-style: none;
  animation: tagFadeIn 0.22s ease both;
}
@keyframes tagFadeIn {
  from { opacity: 0; transform: translateX(-8px); }
  to   { opacity: 1; transform: translateX(0); }
}
.tag-item:hover { background: var(--hover-bg); }
.tag-item.active { background: var(--accent-dim); font-weight: var(--fw-semibold); }

.tag-emoji {
  font-size: 1em;
  line-height: 1;
}
/* SortableJS states */
.tag-item.sortable-ghost {
  opacity: 0.25;
  background: var(--accent-dim);
  border: 1px dashed var(--accent);
}
.tag-item.sortable-drag {
  cursor: grabbing;
  box-shadow: 0 8px 28px rgba(0,0,0,0.45);
  border-radius: var(--radius-sm);
  opacity: 1 !important;
  background: var(--bg-secondary);
  border: 1px solid var(--accent);
  scale: 1.03;
}
/* Drop indicator line */
.sortable-chosen { outline: none; }

.tag-icon {
  font-size: var(--fs-lg);
  min-width: 20px;
  text-align: center;
  flex-shrink: 0;
  line-height: 1;
}

.tag-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Remove count from sidebar */
.tag-count { display: none; }

/* Action buttons (shown on hover) */
.tag-action-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: var(--fs-2xs);
  padding: var(--sp-2) 5px;
  border-radius: var(--radius-xs);
  opacity: 0;
  transition: opacity var(--transition), background var(--transition), color var(--transition);
  flex-shrink: 0;
  line-height: 1.4;
}
.sidebar-edit-mode .tag-item .tag-action-btn { opacity: 1; }
.tag-action-btn:hover { background: var(--accent-dim); color: var(--accent); }

/* Children */


/* Drag-over indicator */
.tag-item.drag-over {
  background: var(--accent-dim);
  outline: 1.5px dashed var(--accent);
  outline-offset: -2px;
}

/* ===== Inline Tag Input ===== */
.tag-inline-input-wrapper {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  padding: var(--sp-6) var(--sp-8);
  background: var(--bg-secondary);
  border: 1.5px solid var(--accent);
  border-radius: var(--radius-sm);
  margin: 3px 0;
  animation: fadeSlideIn 0.15s ease;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(-5px); }
  to   { opacity: 1; transform: translateY(0); }
}

.tag-inline-icon-btn {
  background: var(--border);
  border: none;
  border-radius: var(--radius-xs);
  font-size: var(--fs-lg);
  width: 28px;
  height: 26px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--transition);
  line-height: 1;
}
.tag-inline-icon-btn:hover { background: var(--accent-dim); }

.tag-inline-name-input {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: var(--fs-base);
  outline: none;
  font-family: inherit;
  min-width: 0;
}
.tag-inline-name-input::placeholder { color: var(--text-secondary); }

.tag-inline-hint {
  font-size: var(--fs-2xs);
  color: var(--text-secondary);
  white-space: nowrap;
  flex-shrink: 0;
}

/* Add tag button (Icon only) */

/* ===== Main ===== */
.main-content { flex: 1; display: flex; flex-direction: column; overflow: hidden; min-width: 0; }

.main-header {
  padding: var(--sp-16) var(--sp-24);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: var(--sp-12);
  flex-shrink: 0;
}
.main-header h2 { font-size: var(--fs-lg); font-weight: var(--fw-semibold); flex: 1; }

.btn-back {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font-size: var(--fs-md);
  font-weight: var(--fw-medium);
  padding: var(--sp-4) var(--sp-10);
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.btn-back:hover { background: var(--accent-dim); }
.btn-back.hidden { display: none; }

.main-body { flex: 1; overflow-y: auto; padding: var(--sp-24); container-type: inline-size; container-name: gallery; }

/* ===== Stack View ===== */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 22px;
}

.stack-item {
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 11px;
  transition: transform var(--transition);
}
.stack-item:hover { transform: translateY(-4px); }

.stack-container { position: relative; width: 150px; height: 150px; }

.stack-image {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: var(--radius-md);
  object-fit: cover;
  box-shadow: 0 4px 16px var(--shadow);
  border: 1px solid var(--border);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.stack-container .stack-image:nth-child(3) { transform: rotate(-6deg) translate(-10px, 8px); z-index: 1; opacity: 0.5; }
.stack-container .stack-image:nth-child(2) { transform: rotate(4deg) translate(6px, 5px); z-index: 2; opacity: 0.72; }
.stack-container .stack-image:nth-child(1) { transform: none; z-index: 3; }
.stack-item:hover .stack-container .stack-image:nth-child(3) { transform: rotate(-10deg) translate(-18px, 14px); }
.stack-item:hover .stack-container .stack-image:nth-child(2) { transform: rotate(8deg) translate(14px, 10px); }
.stack-item:hover .stack-container .stack-image:nth-child(1) { transform: translateY(-6px); box-shadow: 0 14px 30px var(--shadow); }

.stack-label {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: var(--fs-base);
  font-weight: var(--fw-medium);
  color: var(--text-primary);
}
.stack-label-icon { font-size: var(--fs-lg); display: flex; align-items: center; }

.badge-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--fill-subtle);
  color: var(--text-secondary);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-pill);
  padding: 0 var(--sp-6);
  min-width: 20px;
  height: 20px;
}

/* ===== Gallery Grid (髢ｾ・ｪ闖ｴ蟒ｱS髫ｪ閧ｲ・ｮ蜉ｱﾎ樒ｹｧ・､郢ｧ・｢郢ｧ・ｦ郢昴・ =====
   - position:absolute + transform 邵ｺ・ｧ郢ｧ・｢郢ｧ・､郢昴・ﾎ堤ｹｧ蟶昴・驗ゑｽｮ
   - JS(doLayout)邵ｺ謔溘・騾包ｽｻ陷剃ｸ翫・naturalHeight郢ｧ蝣､・｢・ｺ髫ｱ髦ｪ・�邵ｺ・ｦ邵ｺ荵晢ｽ蛾ｩ溷調・ｽ・ｮ邵ｺ蜷ｶ・狗ｸｺ・ｮ邵ｺ・ｧ鬩･髦ｪ竊醍ｹｧ鄙ｫ竊醍ｸｺ繝ｻ
   - @media邵ｺ・ｫ郢ｧ蛹ｻ・玖崕邇ｲ辟夊崕繝ｻ・願ｭ厄ｽｿ邵ｺ蛹ｻ繝ｻJS邵ｺ・ｮgetColCount()邵ｺ・ｨ鬨ｾ・｣陷阪・*/
.gallery-grid {
  position: relative;
  width: 100%;
}

.gallery-item {
  position: absolute;
  top: 0;
  left: 0;
  width: 0; /* JS邵ｺ・ｧ髫ｪ閧ｲ・ｮ蜉ｱ・・ｹｧ蠕鯉ｽ狗ｸｺ・ｾ邵ｺ・ｧ邵ｺ・ｮFOUC郢晢ｽｻ郢ｧ・ｹ郢ｧ・ｯ郢晢ｽｭ郢晢ｽｼ郢晢ｽｫ郢晁・繝ｻ鬯溷ｸ吶・鬮ｦ・ｲ雎・ｽ｢ */
  overflow: hidden;
  border-radius: var(--radius-md);
  cursor: zoom-in;
  background: var(--card-bg);
  /* JS邵ｺ荵晢ｽ芽ｲゑｽ｡邵ｺ霈費ｽ檎ｹｧ繝ｻ--tx, --ty 郢ｧ蜑・ｽｽ・ｿ邵ｺ・｣邵ｺ・ｦ鬩溷調・ｽ・ｮ邵ｺ蜷ｶ・・*/
  transform: translate(var(--tx, 0px), var(--ty, 0px)) scale(1);
  transition: box-shadow var(--transition), transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.gallery-item:hover {
  /* hover隴弱ｅ繝ｻ --ty 邵ｺ荵晢ｽ・3px 陟題ｼ披€ｳ邵ｲ縲劃ale 郢ｧ蛛ｵﾂｰ邵ｺ莉｣・・*/
  transform: translate(var(--tx, 0px), calc(var(--ty, 0px) - 3px)) scale(1.01) !important;
  box-shadow: 0 10px 28px var(--shadow);
}
.gallery-item img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

.gallery-item.selected::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent);
  opacity: 0.15;
  pointer-events: none;
  z-index: 10;
  border-radius: var(--radius-md);
}

.gallery-empty {
  color: var(--text-secondary);
  padding: 40px;
}


body.tag-edit-mode-active .card-tags-overlay {
  opacity: 1;
  pointer-events: auto;
}
body.tag-edit-mode-active .card-overlay {
  display: none !important;
}

.card-tags-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: var(--sp-4);
  padding: var(--sp-8);
  border-radius: var(--radius-md);
  z-index: 5;
}
.card-tags-overlay .modal-tag-chip {
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  border-color: rgba(255,255,255,0.2);
}

.card-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-end;
  padding: var(--sp-8);
  background: transparent;
  opacity: 0;
  transition: opacity var(--transition);
  border-radius: var(--radius-md);
}
.gallery-item:hover .card-overlay { opacity: 1; }

/* 陷ｿ・ｳ闕ｳ鄙ｫ縺顔ｹ晢ｽｪ郢ｧ・｢繝ｻ蛹ｻ縺慕ｹ晄鱒繝ｻ驍会ｽｻ郢晄㈱縺｡郢晢ｽｳ繝ｻ繝ｻ*/
.card-overlay-top {
  display: flex;
  gap: 5px;
  align-items: center;
}

/* 陷ｿ・ｳ闕ｳ荵昴♀郢晢ｽｪ郢ｧ・｢繝ｻ莠･轤朱ｫｯ・､郢晄㈱縺｡郢晢ｽｳ繝ｻ繝ｻ*/
.card-overlay-bottom {
  display: flex;
}

.card-overlay-btn {
  background: rgba(0,0,0,0.45);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.9);
  border-radius: var(--radius-sm);
  padding: 5px 9px;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  transition: background 0.15s, border-color 0.15s;
}
.card-overlay-btn:hover { background: rgba(0,0,0,0.7); border-color: rgba(255,255,255,0.3); }

/* 陷台ｼ∝求郢晄㈱縺｡郢晢ｽｳ */
.btn-delete-img {
  padding: 5px var(--sp-8);
  color: #ff6b6b;
  border-color: rgba(255,107,107,0.3);
}
.btn-delete-img:hover {
  background: rgba(255,60,60,0.25);
  border-color: rgba(255,107,107,0.7);
}

/* ===== Modal (Lightbox) 遯ｶ繝ｻ隶難ｽｪ闕ｳ・ｦ邵ｺ・ｳ郢晢ｽｬ郢ｧ・､郢ｧ・｢郢ｧ・ｦ郢昴・===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.88);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 1200;
  display: flex;
  align-items: stretch;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.modal-overlay.open { opacity: 1; pointer-events: auto; }

.modal-inner {
  display: flex;
  flex-direction: row;
  width: 100%;
  height: 100%;
  transform: scale(0.97);
  transition: transform 0.2s ease;
}
.modal-overlay.open .modal-inner { transform: scale(1); }

/* ===== 陝ｾ・ｦ: 騾包ｽｻ陷剃ｸ翫♀郢晢ｽｪ郢ｧ・｢ ===== */
.modal-image-pane {
  flex: 1 1 auto;
  position: relative;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  min-width: 0;
}

/* 郢昴・繝ｻ郢晢ｽｫ郢晁・繝ｻ */
.modal-toolbar {
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  background: rgba(0,0,0,0.55);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-pill);
  padding: 5px var(--sp-12);
  z-index: 10;
  backdrop-filter: blur(8px);
}
.modal-tool-btn {
  background: none;
  border: none;
  color: rgba(255,255,255,0.85);
  cursor: pointer;
  padding: var(--sp-4) var(--sp-6);
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  transition: background 0.15s, color 0.15s;
}
.modal-tool-btn:hover { background: rgba(255,255,255,0.15); color: #fff; }
.modal-tool-btn.active { background: var(--accent); color: #000; }
.modal-zoom-label {
  font-size: var(--fs-sm);
  color: rgba(255,255,255,0.7);
  min-width: 38px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

/* 郢ｧ・ｭ郢晢ｽ｣郢晢ｽｳ郢晁・縺・ 郢昜ｻ｣ﾎｦ郢晢ｽｻ郢ｧ・ｺ郢晢ｽｼ郢晢ｿｽ邵ｺ・ｮ郢晢ｽｫ郢晢ｽｼ郢昴・(position:relative邵ｺ・ｫ邵ｺ蜉ｱ窶ｻimg郢ｧ隱秒solute鬩溷調・ｽ・ｮ) */
.modal-canvas {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
  cursor: grab;
  user-select: none;
  touch-action: none;
}
.modal-canvas.panning { cursor: grabbing; }
.modal-canvas img {
  position: absolute;
  top: 0;
  left: 0;
  max-width: none;
  transform-origin: 0 0;
  pointer-events: none;
  display: block;
}

/* 鬮｢蟲ｨﾂｧ郢ｧ荵昴・郢ｧ・ｿ郢晢ｽｳ */
.modal-close {
  position: absolute;
  top: 14px; right: 14px;
  background: rgba(0,0,0,0.5);
  border: 1px solid rgba(255,255,255,0.15);
  color: #fff;
  width: 34px; height: 34px;
  border-radius: 50%;
  cursor: pointer;
  font-size: var(--fs-lg);
  display: flex; align-items: center; justify-content: center;
  transition: background 0.15s;
  z-index: 20;
}
.modal-close:hover { background: rgba(255,255,255,0.18); }

/* ===== 陷ｿ・ｳ: 隲�繝ｻ・ｽ・ｱ郢昜ｻ｣繝ｭ郢晢ｽｫ (雎ｺ・｡邵ｺ繝ｻ豼�鬨ｾ荵励・郢昴・縺倡ｹｧ・､郢晢ｽｳ) ===== */
.modal-info-pane {
  width: 270px;
  flex-shrink: 0;
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: rgba(6, 8, 14, 0.9);
  border-left: 1px solid rgba(255,255,255,0.06);
  transition: width 0.25s cubic-bezier(0.4,0,0.2,1);
}
.modal-info-pane.collapsed { width: 28px; }

/* 隰壼€･・顔ｸｺ貅倪螺邵ｺ・ｿ郢晏現縺堤ｹ晢ｽｫ郢晄㈱縺｡郢晢ｽｳ */
.modal-info-toggle {
  position: absolute;
  top: 10px;
  left: 6px;
  width: 22px; height: 22px;
  background: none;
  border: none;
  color: rgba(255,255,255,0.3);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-xs);
  transition: color 0.15s, background 0.15s;
  z-index: 5;
  flex-shrink: 0;
}
.modal-info-toggle:hover { color: rgba(255,255,255,0.75); background: rgba(255,255,255,0.08); }
.modal-info-toggle svg { transition: transform 0.25s ease; }
.modal-info-pane.collapsed .modal-info-toggle svg { transform: rotate(180deg); }

/* 郢昜ｻ｣繝ｭ郢晢ｽｫ邵ｺ・ｮ陷€繝ｻ・ｮ・ｹ隴幢ｽｬ闖ｴ繝ｻ*/
.modal-info-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 40px var(--sp-16) var(--sp-16);
  gap: var(--sp-14);
  opacity: 1;
  transition: opacity 0.15s ease;
  white-space: nowrap;
  min-width: 0;
}
.modal-info-pane.collapsed .modal-info-body {
  opacity: 0;
  pointer-events: none;
}
.modal-info-footer {
  margin-top: auto;
  padding-top: var(--sp-10);
}

/* 郢晢ｽｬ郢ｧ・ｹ郢晄亢ﾎｦ郢ｧ・ｷ郢昴・ 陝ｷ繝ｻ窶ｲ驍擾ｿｽ邵ｺ繝ｻ・ｽ・ｴ陷ｷ蛹ｻ繝ｻ驍ｵ・ｦ驕ｨ髦ｪ竏ｩ邵ｺ・ｫ邵ｺ蜷ｶ・・*/
@media (max-width: 680px) {
  .modal-inner { flex-direction: column; }
  .modal-info-pane { width: 100% !important; border-left: none; border-top: 1px solid rgba(255,255,255,0.07); max-height: 45vh; }
  .modal-image-pane { min-height: 50vh; }
}

.modal-section { display: flex; flex-direction: column; gap: var(--sp-4); }
.modal-section.hidden { display: none; }
.modal-section-label {
  font-size: var(--fs-2xs);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.28);
}
.modal-section-value {
  font-size: var(--fs-md);
  color: rgba(255,255,255,0.7);
  line-height: 1.55;
  word-break: break-word;
  white-space: normal;
}
.modal-section-value.dimmed { color: rgba(255,255,255,0.3); font-style: italic; }

.modal-tags { display: flex; flex-wrap: wrap; gap: 5px; }
.modal-tag-chip {
  padding: var(--sp-2) 11px;
  border-radius: var(--radius-pill);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(200,240,0,0.4);
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}
.modal-tag-chip--edit {
  padding: var(--sp-2) var(--sp-6) var(--sp-2) 11px;
  gap: var(--sp-6);
}
.modal-tag-remove-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  line-height: 1;
  padding: 1px 3px;
  border-radius: var(--radius-xs);
  transition: color 0.15s, background 0.15s;
}
.modal-tag-remove-btn:hover {
  color: #ff5555;
  background: rgba(255,85,85,0.12);
}
.modal-url-link {
  color: var(--accent);
  text-decoration: underline;
  word-break: break-all;
  font-size: var(--fs-base);
}
.modal-url-link:hover { opacity: 0.8; }



/* ===== Snackbar ===== */
.snackbar {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: var(--sp-10) 18px;
  border-radius: var(--radius-pill);
  display: flex;
  align-items: center;
  gap: var(--sp-14);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 1000;
  box-shadow: 0 8px 32px var(--shadow);
  white-space: nowrap;
}
.snackbar.show { transform: translateX(-50%) translateY(0); }
.snackbar-message { font-size: var(--fs-base); color: var(--text-primary); }

/* ===== 郢晏現繝｣郢晏干竏郁ｬ鯉ｽｻ郢ｧ逾・B ===== */
.btn-scroll-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: #000;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 18px rgba(0,0,0,0.3);
  z-index: 900;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s cubic-bezier(0.34,1.56,0.64,1);
}
.btn-scroll-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.btn-scroll-top:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
}
.snackbar-message { font-size: var(--fs-base); color: var(--text-primary); }

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: var(--radius-pill); }

/* SVG Icons for Actions */
.action-icon {
  width: 14px; height: 14px;
  fill: none; stroke: currentColor;
  stroke-width: 2; stroke-linecap: round; stroke-linejoin: round;
}
.sidebar-header.drag-over { background: var(--accent-dim); }


/* ===== Trash Section ===== */
.trash-header { font-size: var(--fs-sm); color: var(--text-secondary); font-weight: var(--fw-semibold); padding: var(--sp-4) var(--sp-6); }
.trash-list .tag-item { opacity: 0.7; }

/* Filter mode toggle & Theme container */
.filter-mode-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-8) var(--sp-10);
}
.filter-mode-toggle {
  display: flex;
  position: relative;
  border-radius: var(--radius-pill);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  overflow: hidden;
  padding: var(--sp-2);
  width: 170px;
  margin: 0 auto var(--sp-10);
}
.filter-target-slider {
  position: absolute;
  top: 2px;
  bottom: 2px;
  left: 2px;
  width: calc(50% - 2px);
  background: var(--accent);
  border-radius: var(--radius-pill);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1;
}
.filter-mode-toggle.mode-or .filter-target-slider {
  transform: translateX(100%);
}
.filter-mode-btn {
  position: relative;
  z-index: 2;
  flex: 1;
  text-align: center;
  padding: var(--sp-4) var(--sp-12);
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  transition: color var(--transition);
}
.filter-mode-btn.active { color: var(--on-accent); }
.trash-list .tag-item:hover { opacity: 1; }
.trash-list .tag-action-btn { font-size: var(--fs-xs); padding: var(--sp-2) var(--sp-6); background: rgba(255,255,255,0.1); margin-left: var(--sp-2); }

/* ===== Card & Stack Animations ===== */
.masonry-item {
  animation: cardReveal 0.3s cubic-bezier(0.4,0,0.2,1) both;
}
@keyframes cardReveal {
  from { opacity: 0; transform: scale(0.94) translateY(12px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}
.masonry-item:nth-child(even)  { animation-delay: 0.04s; }
.masonry-item:nth-child(3n)    { animation-delay: 0.08s; }
.masonry-item:nth-child(4n)    { animation-delay: 0.12s; }

.stack-item {
  animation: stackReveal 0.35s cubic-bezier(0.4,0,0.2,1) both;
}
@keyframes stackReveal {
  from { opacity: 0; transform: translateY(20px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.stack-item:nth-child(2) { animation-delay: 0.06s; }
.stack-item:nth-child(3) { animation-delay: 0.12s; }
.stack-item:nth-child(4) { animation-delay: 0.18s; }
.stack-item:nth-child(5) { animation-delay: 0.24s; }

/* New image toast badge */
.new-images-badge {
  position: fixed;
  bottom: 70px;
  right: 24px;
  background: var(--accent);
  color: #000;
  font-size: var(--fs-md);
  font-weight: var(--fw-bold);
  padding: var(--sp-8) var(--sp-16);
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  cursor: pointer;
  animation: badgeSlideIn 0.3s cubic-bezier(0.4,0,0.2,1);
  z-index: 200;
}
@keyframes badgeSlideIn {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Sidebar header shimmer on new image detected */
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}
.sidebar-header.new-image-flash h1 {
  background: linear-gradient(90deg, var(--text-primary) 40%, var(--accent) 50%, var(--text-primary) 60%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 1s linear;
}

/* SortableJS邵ｺ譴ｧ隲ｺ陷茨ｽ･邵ｺ蜷ｶ・矩囎竏ｫ・ｴ・ｽ繝ｻ蛹ｻ縺也ｹ晢ｽｼ郢ｧ・ｹ郢晏現・・ｹ晏ｳｨﾎ帷ｹ昴・縺帝囎竏ｫ・ｴ・ｽ繝ｻ蟲ｨ竊鍋ｹｧ蛹ｻ・矩勗・ｨ驕会ｽｺ郢晁・縺堤ｹ晢ｽｻ郢昶・ﾎ帷ｸｺ・､邵ｺ髦ｪ・帝ｫｦ・ｲ雎・ｽ｢ */

/* Tag children slide animation */


/* ===== Tag Edit & Delete ===== */
.tag-color-picker { width: 22px; height: 22px; padding: 0; border: none; background: none; cursor: pointer; }
.tag-icon-edit { border-radius: var(--radius-xs); padding: var(--sp-2); }
.tag-color-reset-btn { font-size: var(--fs-xs); padding: var(--sp-2) var(--sp-4); border: 1px solid var(--border); border-radius: var(--radius-xs); background: transparent; cursor: pointer; margin-left: var(--sp-2); }
.tag-color-reset-btn:hover { background: var(--hover-bg-strong); }

/* ===== Settings Modal ===== */
/* 画像モーダル用の stretch を上書きし、内容の高さに合わせて中央配置 */
#settings-modal { align-items: center; padding: var(--sp-16); }
.settings-modal-inner {
  max-height: 100%;
  overflow-y: auto;
  box-sizing: border-box;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: var(--sp-16) var(--sp-20); /* 24px邵ｺ荵晢ｽ蛾し・ｮ陝・・*/
  max-width: 380px;
  width: 90%;
  position: relative;
}
.settings-title {
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  color: var(--text-primary);
  margin-bottom: var(--sp-12); /* 18px邵ｺ荵晢ｽ蛾し・ｮ陝・・*/
}
.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-8); /* 12px邵ｺ荵晢ｽ蛾し・ｮ陝・・*/
}
.settings-label-group {
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.settings-desc {
  font-size: var(--fs-2xs);
  color: var(--text-secondary);
}
.settings-color-input {
  width: 36px;
  height: 24px;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
  border-radius: var(--radius-xs);
}
.settings-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--sp-14) 0;
}
.settings-section-label {
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-secondary);
  margin-bottom: var(--sp-10);
}
/* Theme toggle buttons inside settings */
.theme-toggle-group {
  display: flex;
  gap: var(--sp-6);
}
/* Icon upload button */

/* ===== 郢ｧ・ｮ郢晢ｽ｣郢晢ｽｩ郢晢ｽｪ郢晢ｽｼ郢ｧ・ｫ郢晢ｽｼ郢昴・髫阪・辟夐ｩ包ｽｸ隰壹・===== */
.card-check-btn {
  position: absolute;
  top: 8px;
  left: 8px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(0,0,0,0.5);
  border: 2px solid rgba(255,255,255,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s, background 0.15s, border-color 0.15s, transform 0.15s;
  z-index: 10;
  color: transparent;
}
.gallery-item:hover .card-check-btn { opacity: 1; }
.gallery-item.selected .card-check-btn {
  opacity: 1;
  background: var(--accent);
  border-color: var(--accent);
  color: #000;
  transform: scale(1.1);
}
.gallery-item.selected {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}
[data-theme="light"] .gallery-item.selected .card-check-btn { color: #fff; }

/* ===== 郢晁ｼ釆溽ｹ晢ｽｼ郢昴・縺・ｹ晢ｽｳ郢ｧ・ｰ 髫阪・辟夂ｹｧ・ｿ郢ｧ・ｰ闔牙€・ｽｸ蠑ｱ繝ｰ郢晢ｽｼ ===== */
.multi-tag-bar {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: var(--sp-10) var(--sp-16);
  display: flex;
  align-items: center;
  gap: var(--sp-12);
  z-index: 500;
  box-shadow: 0 8px 32px var(--shadow);
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  max-width: 90vw;
  overflow: hidden;
}
.multi-tag-bar.visible {
  transform: translateX(-50%) translateY(0);
}
.multi-tag-bar-count {
  font-size: var(--fs-md);
  font-weight: var(--fw-bold);
  color: var(--text-secondary);
  white-space: nowrap;
  flex-shrink: 0;
}
.multi-tag-bar-tags {
  display: flex;
  gap: var(--sp-6);
  flex-wrap: nowrap;
  overflow-x: auto;
  max-width: 60vw;
  scrollbar-width: none;
}
.multi-tag-bar-tags::-webkit-scrollbar { display: none; }
.multi-tag-btn {
  padding: var(--sp-4) var(--sp-12);
  border-radius: var(--radius-pill);
  border: 1.5px solid;
  background: transparent;
  cursor: pointer;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: background 0.15s, transform 0.1s;
  font-family: inherit;
}
.multi-tag-btn:hover {
  opacity: 0.8;
  transform: scale(1.05);
}
.multi-tag-bar-close {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  padding: var(--sp-4);
  border-radius: 50%;
  flex-shrink: 0;
  transition: background 0.15s;
}
.multi-tag-bar-close:hover { background: var(--bg); color: var(--text-primary); }

/* ===== 郢ｧ・ｴ郢晄ｺｽ・ｮ・ｱ郢晢ｽｻ鬮ｱ讚・ｽ｡・ｨ驕会ｽｺ 隶難ｽｪ闕ｳ・ｦ邵ｺ・ｳ ===== */
.trash-hidden-row {
  display: flex;
  border-top: 1px solid var(--border);
  margin-top: var(--sp-4);
  padding-top: var(--sp-4);
}

/* ===== 郢ｧ・ｴ郢晄ｺｽ・ｮ・ｱ郢晢ｽｻ鬮ｱ讚・ｽ｡・ｨ驕会ｽｺ郢ｧ・ｻ郢ｧ・ｯ郢ｧ・ｷ郢晢ｽｧ郢晢ｽｳ ===== */

.hidden-count-badge {
  margin-left: auto;
  background: var(--accent);
  color: #fff;
  font-size: var(--fs-2xs);
  font-weight: var(--fw-bold);
  min-width: 16px;
  height: 16px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--sp-4);
  line-height: 1;
  opacity: 0;
  transition: opacity 0.2s;
}
.hidden-count-badge:not(:empty) { opacity: 1; }

.hidden-item {
  display: flex;
  align-items: center;
  gap: var(--sp-8);
  padding: 5px var(--sp-10);
  border-radius: var(--radius-sm);
  transition: background 0.15s;
  cursor: default;
}
.hidden-item:hover { background: var(--bg-hover); }

.hidden-item-thumb {
  width: 32px;
  height: 32px;
  object-fit: cover;
  border-radius: var(--radius-xs);
  flex-shrink: 0;
  opacity: 0.6;
}
.hidden-item-name {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  flex: 1;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.hidden-restore-btn svg { stroke: var(--text-secondary); }
.hidden-restore-btn:hover svg { stroke: var(--accent); }

/* 非表示ボタン固有スタイル */
.btn-hide-img { color: #aaa; }
.btn-hide-img:hover { color: var(--accent) !important; background: rgba(255,255,255,0.08) !important; }


/* ===== Mode Toggle Buttons ===== */

/* ===== Explorer Sidebar ===== */
.explorer-sidebar {
  padding: var(--sp-10) var(--sp-10);
  gap: 0;
}
.exp-sidebar-section {
  margin-bottom: var(--sp-16);
}
.exp-sidebar-label {
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--sp-4) var(--sp-6) var(--sp-6);
}
.exp-sidebar-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.exp-sidebar-item {
  display: flex;
  align-items: center;
  gap: var(--sp-8);
  padding: 7px var(--sp-10);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: var(--fs-base);
  color: var(--text-primary);
  transition: background var(--transition);
  user-select: none;
  white-space: nowrap;
  overflow: hidden;
}
.exp-sidebar-item:hover { background: var(--hover-bg); }
.exp-sidebar-item.active {
  background: var(--accent-dim);
  font-weight: var(--fw-semibold);
}
.exp-sidebar-item-icon { font-size: var(--fs-lg); flex-shrink: 0; }
.exp-sidebar-item-name { flex: 1; overflow: hidden; text-overflow: ellipsis; }
.exp-sidebar-item-unpin {
  opacity: 0;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: var(--sp-2) var(--sp-4);
  border-radius: var(--radius-xs);
  font-size: var(--fs-xs);
  transition: opacity var(--transition), color var(--transition);
  flex-shrink: 0;
}
.exp-sidebar-item:hover .exp-sidebar-item-unpin { opacity: 1; }
.exp-sidebar-item-unpin:hover { color: var(--accent); }

/* ピン留めドロップゾーン */
.exp-pin-dropzone {
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: var(--sp-10) var(--sp-12);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  text-align: center;
  transition: all var(--transition);
  margin-top: var(--sp-2);
}
.exp-pin-dropzone.drag-over {
  border-color: var(--accent);
  background: var(--accent-dim);
  color: var(--accent);
}
/* ピン留め済みアイテムがある場合は小さく */
#exp-pinned-list.has-items .exp-pin-dropzone {
  padding: 5px var(--sp-8);
  font-size: var(--fs-xs);
  opacity: 0.6;
}
#exp-pinned-list.has-items .exp-pin-dropzone:hover {
  opacity: 1;
}

/* ===== Explorer Breadcrumb ===== */
.explorer-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  padding: var(--sp-8) var(--sp-24);
  border-bottom: 1px solid var(--border);
  font-size: var(--fs-md);
  flex-shrink: 0;
  flex-wrap: wrap;
  min-height: 38px;
}
.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  color: var(--text-secondary);
  cursor: pointer;
  padding: 3px var(--sp-6);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  white-space: nowrap;
}
.breadcrumb-item:hover { color: var(--text-primary); background: var(--hover-bg); }
.breadcrumb-item.current { color: var(--text-primary); font-weight: var(--fw-semibold); cursor: default; }
.breadcrumb-item.current:hover { background: none; }
.breadcrumb-sep { color: var(--text-secondary); opacity: 0.4; font-size: var(--fs-sm); }

/* ===== Explorer Grid (フォルダ + 画像 混在) ===== */
.explorer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--sp-16);
  padding-bottom: 40px;
}
@container gallery (min-width: 900px) {
  .explorer-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
}

/* フォルダカード */
.folder-card {
  position: relative;
  border-radius: var(--radius-md);
  background: var(--card-bg);
  border: 1px solid var(--border);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  aspect-ratio: 1 / 1;
  display: flex;
  flex-direction: column;
  user-select: none;
}
.folder-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px var(--shadow);
  border-color: var(--border-strong);
}

/* フォルダカードの背景（カバー画像） */
.folder-card-bg {
  position: absolute;
  inset: 0;
  object-fit: cover;
  width: 100%;
  height: 100%;
  opacity: 0.25;
  transition: opacity var(--transition);
}
.folder-card:hover .folder-card-bg { opacity: 0.35; }

/* フォルダアイコン中央 */
.folder-card-icon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-display);
  line-height: 1;
}

/* フォルダカード下部ラベル */
.folder-card-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--sp-20) var(--sp-10) 9px;
  background: linear-gradient(to top, rgba(0,0,0,0.72) 0%, transparent 100%);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}
[data-theme="light"] .folder-card-label {
  background: linear-gradient(to top, rgba(0,0,0,0.55) 0%, transparent 100%);
}
.folder-card-name {
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  color: #fff;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.folder-card-meta {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,0.65);
}

/* フォルダカードのホバーオーバーレイ（編集・削除ボタン） */
.folder-card-overlay {
  position: absolute;
  top: 6px;
  right: 6px;
  display: flex;
  gap: var(--sp-4);
  opacity: 0;
  transition: opacity var(--transition);
}
.folder-card:hover .folder-card-overlay { opacity: 1; }

/* ドラッグ中のフォルダカード */
.folder-card.dragging {
  opacity: 0.5;
  cursor: grabbing;
}
/* ドロップターゲット */
.folder-card.drag-over {
  border-color: var(--accent);
  background: var(--accent-dim);
}

/* エクスプローラーモード時の画像カード（explorer-gridの中） */
.explorer-grid .gallery-item {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: var(--radius-md);
  cursor: zoom-in;
  background: var(--card-bg);
  border: 1px solid var(--border);
  transition: box-shadow var(--transition), transform var(--transition);
  transform: none !important;
}
.explorer-grid .gallery-item:hover {
  transform: translateY(-3px) !important;
  box-shadow: 0 8px 24px var(--shadow);
}
.explorer-grid .gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
}

/* セクション区切りラベル（フォルダ群と画像群の間） */
.explorer-section-label {
  grid-column: 1 / -1;
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--sp-8) var(--sp-2) var(--sp-4);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--sp-4);
}


/* ===== Explorer Toolbar ===== */
.explorer-toolbar {
  display: flex;
  align-items: center;
  gap: var(--sp-10);
  padding: var(--sp-10) 0 var(--sp-14);
  flex-wrap: wrap;
}
.explorer-toolbar-info {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
}
.exp-new-folder-form {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  padding: var(--sp-6) var(--sp-10);
  background: var(--bg-secondary);
  border: 1.5px solid var(--accent);
  border-radius: var(--radius-sm);
  animation: fadeSlideIn 0.15s ease;
  width: 100%;
  margin-top: var(--sp-4);
}
.exp-new-folder-input {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: var(--fs-base);
  outline: none;
  font-family: inherit;
  min-width: 0;
}
.exp-new-folder-input::placeholder { color: var(--text-secondary); }
.exp-new-folder-ok,
.exp-new-folder-ok { border-color: var(--accent); color: var(--accent); }
.exp-new-folder-ok:hover { background: var(--accent); color: var(--bg); }

/* ===== Tree Explorer UI (サイドバー) ===== */

/* セクションヘッダー（「フォルダ構成」行） */
.tree-section {
  margin-bottom: var(--sp-2);
}
.tree-section-header {
  display: flex;
  align-items: center;
  gap: 5px;
  width: 100%;
  padding: 5px var(--sp-6);
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  font-family: inherit;
  text-align: left;
}
.tree-section-header:hover { color: var(--text-primary); background: var(--hover-bg); }

.tree-section-arrow {
  flex-shrink: 0;
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  transform: rotate(90deg); /* 開いた状態: ▼ */
}
.tree-section-arrow.open { transform: rotate(90deg); }
.tree-section-arrow.closed { transform: rotate(0deg); }

.tree-section-body {
  overflow: hidden;
  max-height: 9999px;
  transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.2s ease;
  opacity: 1;
}
.tree-section-body.collapsed {
  max-height: 0;
  opacity: 0;
}

/* ルートアイテムラッパー */

/* ルートレベルの行 */

/* 矢印ボタン */
.tree-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--tree-arrow-size);
  height: var(--tree-arrow-size);
  flex-shrink: 0;
  border-radius: var(--radius-xs);
  color: var(--text-secondary);
  cursor: pointer;
  transition: color var(--transition), background var(--transition), transform 0.2s cubic-bezier(0.4,0,0.2,1);
  transform: rotate(0deg); /* ▶ 閉じた状態 */
}
.tree-arrow.open { transform: rotate(90deg); } /* ▼ 開いた状態 */
.tree-arrow:hover { color: var(--text-primary); background: var(--hover-bg-strong); }

/* 矢印なしスペーサー（子のないアイテム用） */

/* 子アイテム全体のコンテナ */
/* 縦のツリーライン */

/* 子アイテム行 */

/* 子の横ライン */

/* ===== エクスプローラー: 範囲選択 ===== */
.main-body { position: relative; }
.explorer-grid { user-select: none; -webkit-user-select: none; }
.explorer-marquee {
  position: absolute;
  z-index: 50;
  border: 1px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  border-radius: var(--radius-xs);
  pointer-events: none;
}
body.is-marquee-selecting,
body.is-marquee-selecting * { cursor: crosshair !important; }
.explorer-grid .gallery-item.selected { border-color: var(--accent); outline: 2px solid var(--accent); outline-offset: -2px; }

/* ==========================================================
   Components
   汎用UIはここのクラスを組み合わせて使う。新しいボタンを作るときも
   個別にスタイルを書かず .btn + 修飾クラスで表現すること。
   ========================================================== */

/* ----- Button -----
   .btn            基本形（透明・枠なし）
   .btn-outline    実線の枠
   .btn-dashed     点線の枠（「つくる」系の操作）
   .btn-primary    アクセント色の塗り（決定・主要操作）
   .btn-secondary  面の塗り＋枠（キャンセル・副操作）
   .btn-sm / .btn-lg   サイズ
   .btn-pill       両端を丸く
   .btn-block      横幅いっぱい / .btn-fill 親の flex で伸ばす
   .btn-icon       アイコンだけの正方形ボタン
   .active / .is-active  選択中（トグルの ON） */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-6);
  padding: var(--sp-6) var(--sp-12);
  font-family: inherit;
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  line-height: 1.2;
  white-space: nowrap;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  user-select: none;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}
.btn:hover { color: var(--text-primary); background: var(--hover-bg); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.btn:disabled { opacity: 0.5; cursor: default; }

.btn-outline { border-color: var(--border); }
.btn-outline:hover { border-color: var(--text-secondary); background: var(--bg-secondary); }

.btn-dashed { border: 1px dashed var(--border-strong); }
.btn-dashed:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }

.btn-primary { background: var(--accent); color: var(--on-accent); font-weight: var(--fw-bold); }
.btn-primary:hover { background: var(--accent-hover); color: var(--on-accent); }

.btn-secondary { background: var(--bg-secondary); color: var(--text-primary); border-color: var(--border); }
.btn-secondary:hover { background: var(--hover-bg-strong); border-color: var(--border-strong); }

.btn-sm { padding: var(--sp-4) var(--sp-10); font-size: var(--fs-sm); }
.btn-lg { padding: var(--sp-10) var(--sp-16); font-size: var(--fs-base); }
.btn-pill { border-radius: var(--radius-pill); }
.btn-block { display: flex; width: 100%; }
.btn-fill { flex: 1; min-width: 0; }
.btn-icon { padding: 0; width: 32px; height: 32px; flex-shrink: 0; }

.btn.active, .btn.is-active { color: var(--accent); border-color: var(--accent); background: var(--accent-dim); }
.btn-pill.active, .btn-pill.is-active { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }

/* ----- Section label（小見出し） ----- */
.ui-label {
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.ui-desc { font-size: var(--fs-2xs); color: var(--text-secondary); font-weight: normal; text-transform: none; letter-spacing: normal; }

/* ----- Folder tree（全階層共通） -----
   行の字下げは JS が行に付ける --depth × --tree-indent で決まる。 */
.tree-node { position: relative; }
.tree-row {
  min-height: var(--tree-row-height);
  padding: var(--sp-2) var(--sp-6) var(--sp-2) calc(var(--sp-2) + var(--depth, 0) * var(--tree-indent));
  gap: var(--sp-2);
  font-size: var(--fs-base);
  align-items: center;
}
.tree-children .tree-row { font-size: var(--fs-md); }
.tree-row .tag-icon { min-width: 16px; font-size: var(--fs-base); }
/* 名前は1行で全文を出す。サイドバーの幅は最長の名前に合わせて広がり、上限を超えたら横スクロール */
.tree-row .tag-name {
  flex: none;
  white-space: nowrap;
  overflow: visible;
  text-overflow: clip;
  line-height: 1.35;
}
.tree-section-body { overflow-x: auto; overflow-y: hidden; }
.tree-section-body .tag-list { min-width: max-content; }
/* 編集・削除ボタンは幅を取らない。ホバー時だけ行の右端に重ねて出す */
.tree-row .tag-actions {
  display: none;
  position: absolute;
  right: var(--sp-4);
  top: 50%;
  transform: translateY(-50%);
  gap: var(--sp-2);
  padding-left: var(--sp-6);
  background: linear-gradient(to right, transparent, var(--sidebar-bg) 30%);
}
.tree-row:hover .tag-actions,
.sidebar-edit-mode .tree-row .tag-actions { display: flex; }
.tree-row .tag-action-btn { opacity: 1; }
.tree-arrow-spacer { display: inline-block; width: var(--tree-arrow-size); flex-shrink: 0; }

.tag-children {
  overflow: hidden;
  max-height: 2000px;
  opacity: 1;
  transition: max-height 0.25s cubic-bezier(0.4,0,0.2,1), opacity 0.2s ease;
}
.tag-children.collapsed { max-height: 0 !important; opacity: 0; }

/* ----- 個別画面のレイアウト部品（旧インライン style） ----- */
.sidebar-title { display: flex; align-items: center; flex-grow: 1; cursor: pointer; }
#trash-list { padding: var(--sp-4) 0; }
.modal-section-head { display: flex; align-items: center; gap: var(--sp-8); margin-bottom: var(--sp-6); }
.modal-section-head .modal-section-label { margin-bottom: 0; }
.settings-section-desc { display: block; margin-top: var(--sp-2); }
.settings-actions { display: flex; gap: var(--sp-8); margin-top: var(--sp-14); }
/* 設定モーダルは画面テーマに従う（.modal-section-label は画像ビューア用の暗い背景向け） */
.settings-modal-inner .modal-section-label { color: var(--text-primary); }

/* ----- Input ----- */
.ui-input {
  width: 100%;
  padding: var(--sp-6) var(--sp-10);
  font: inherit;
  font-size: var(--fs-base);
  color: var(--text-primary);
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color var(--transition);
}
.ui-input:focus { border-color: var(--accent); }

/* ----- Segmented control（排他の選択肢） ----- */
.ui-segmented {
  display: flex;
  padding: var(--sp-2);
  gap: var(--sp-2);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.ui-segmented-btn {
  flex: 1;
  padding: var(--sp-4) var(--sp-8);
  font: inherit;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.ui-segmented-btn:hover { color: var(--text-primary); }
.ui-segmented-btn.active { background: var(--bg-secondary); color: var(--text-primary); box-shadow: 0 1px 3px var(--shadow); }

/* ----- 画像アイコン（絵文字と同じ大きさで並ぶ） ----- */
.tag-icon-img {
  width: 1.15em;
  height: 1.15em;
  object-fit: cover;
  border-radius: var(--radius-xs);
  vertical-align: middle;
  flex-shrink: 0;
}
.folder-card-icon .tag-icon-img { width: 56px; height: 56px; border-radius: var(--radius-sm); box-shadow: 0 2px 10px var(--shadow); }
.folder-card-action { font-size: 11px; padding: var(--sp-4) 7px; }
.tree-row .tag-icon { display: inline-flex; align-items: center; justify-content: center; margin-right: var(--sp-2); }
/* 編集中の行・カードを示す */
.is-editing { outline: 2px solid var(--accent); outline-offset: -2px; }

/* ----- タグ/フォルダ編集ポップオーバー ----- */
.tag-editor {
  position: fixed;
  z-index: 1300;
  width: 300px;
  max-height: calc(100vh - 16px);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--sp-8);
  padding: var(--sp-14);
  background: var(--bg-secondary);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  box-shadow: 0 16px 40px var(--shadow);
  animation: tagEditorIn 0.14s ease-out;
}
@keyframes tagEditorIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }
.tag-editor .ui-label { margin-top: var(--sp-4); }
.tag-editor-title { font-size: var(--fs-base); font-weight: var(--fw-bold); color: var(--text-primary); }

/* プレビュー: ツリーの行とフォルダカードの見え方 */
.tag-editor-preview {
  display: flex;
  align-items: center;
  gap: var(--sp-10);
  padding: var(--sp-10);
  background: var(--bg);
  border-radius: var(--radius-sm);
}
.tag-editor-preview-row {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  font-size: var(--fs-base);
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
}
.tag-editor-pv-icon { display: inline-flex; align-items: center; }
.tag-editor-preview-card {
  position: relative;
  width: 72px;
  height: 72px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: var(--card-bg);
  border: 1px solid var(--border);
  overflow: hidden;
}
.tag-editor-pv-card-icon {
  position: absolute; inset: 0 0 14px 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem;
}
.tag-editor-pv-card-icon .tag-icon-img { width: 34px; height: 34px; }
.tag-editor-pv-card-name {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: var(--sp-2) var(--sp-4);
  font-size: var(--fs-2xs);
  font-weight: var(--fw-bold);
  color: var(--on-media);
  background: linear-gradient(to top, rgba(0,0,0,0.65), transparent);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.tag-editor-panel { display: flex; flex-direction: column; gap: var(--sp-6); }
.tag-editor-panel[hidden] { display: none; }
.tag-editor-emoji-grid { display: grid; grid-template-columns: repeat(8, 1fr); gap: var(--sp-2); }
.tag-editor-emoji-btn {
  aspect-ratio: 1;
  font-size: 1.05rem;
  background: none;
  border: none;
  border-radius: var(--radius-xs);
  cursor: pointer;
}
.tag-editor-emoji-btn:hover { background: var(--hover-bg-strong); }
.tag-editor-drop {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-4);
  padding: var(--sp-14) var(--sp-10);
  font: inherit;
  color: var(--text-secondary);
  background: transparent;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-align: center;
  transition: border-color var(--transition), background var(--transition), color var(--transition);
}
.tag-editor-drop:hover,
.tag-editor-drop.drag-over { border-color: var(--accent); background: var(--accent-dim); color: var(--accent); }
.tag-editor-drop-main { font-size: var(--fs-md); font-weight: var(--fw-semibold); }

.tag-editor-colors { display: flex; align-items: center; gap: var(--sp-6); flex-wrap: wrap; }
.tag-editor-swatch {
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--swatch);
  border: 2px solid transparent;
  cursor: pointer;
  box-shadow: 0 0 0 1px var(--border-strong);
}
.tag-editor-swatch.active { border-color: var(--bg-secondary); box-shadow: 0 0 0 2px var(--accent); }
.tag-editor-color { width: 26px; height: 22px; padding: 0; border: none; background: none; cursor: pointer; }
.tag-editor-error { font-size: var(--fs-sm); color: var(--danger); }
.tag-editor-actions { display: flex; gap: var(--sp-8); margin-top: var(--sp-4); }

/* ----- 今すぐ取得ボタン ----- */
.btn-sync.is-syncing { color: var(--accent); cursor: progress; }
.btn-sync.is-syncing svg { animation: syncSpin 0.9s linear infinite; }
@keyframes syncSpin { to { transform: rotate(360deg); } }


/* ----- アップロードのドロップ案内 ----- */
.upload-drop-overlay {
  position: fixed;
  inset: 0;
  z-index: 1400;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-24);
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.upload-drop-overlay.show { opacity: 1; }
.upload-drop-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-6);
  width: 100%;
  height: 100%;
  border: 2px dashed var(--accent);
  border-radius: var(--radius-lg);
  background: var(--accent-dim);
}
.upload-drop-title { font-size: var(--fs-xl); font-weight: var(--fw-bold); color: var(--text-primary); }
.upload-drop-target { font-size: var(--fs-md); }

/* ----- 設定: 管理トークン ----- */
.settings-row-stack { flex-direction: column; align-items: stretch; gap: var(--sp-6); }
.admin-token-field { display: flex; gap: var(--sp-6); align-items: center; }
.admin-token-field .ui-input { flex: 1; min-width: 0; padding: var(--sp-4) var(--sp-8); font-size: var(--fs-md); }
.admin-token-status {
  margin-left: var(--sp-4);
  padding: 1px var(--sp-6);
  font-size: var(--fs-2xs);
  border-radius: var(--radius-pill);
  background: var(--fill-subtle);
  color: var(--text-secondary);
  text-transform: none;
}
.admin-token-status.is-set { background: var(--accent-dim); color: var(--accent); }

/* ----- 設定: 折りたたみのヘルプ ----- */
.settings-help { font-size: var(--fs-sm); color: var(--text-secondary); }
.settings-help summary { cursor: pointer; width: fit-content; color: var(--text-secondary); }
.settings-help summary:hover { color: var(--text-primary); }
.settings-help[open] summary { margin-bottom: var(--sp-6); }
.settings-help p, .settings-help ol { margin: 0 0 var(--sp-6); line-height: 1.6; }
.settings-help ol { padding-left: var(--sp-20); }
.settings-help code {
  padding: 0 var(--sp-4);
  font-size: var(--fs-2xs);
  background: var(--fill-subtle);
  border-radius: var(--radius-xs);
  word-break: break-all;
}

/* ----- 表示モード切替ボタン（1ボタンで交互に切替。今のモードのアイコンを表示） ----- */
.mode-switch-btn { margin-left: auto; color: var(--accent); }
.mode-switch-btn .mode-icon { display: none; }
.mode-switch-btn[data-mode="gallery"] .mode-icon-gallery,
.mode-switch-btn[data-mode="explorer"] .mode-icon-explorer { display: block; }

/* ----- 設定ボタン（右カラム右上に固定） ----- */
.main-content { position: relative; }
.main-settings-btn {
  position: absolute;
  top: calc((var(--topbar-height) - 32px) / 2);
  right: var(--sp-16);
  z-index: 20;
  width: 32px;
  height: 32px;
}
/* 右カラム上部の帯はどちらのモードでも同じ高さ（設定ボタンの位置を揃える） */
.main-header,
.explorer-breadcrumb { padding-right: 60px; min-height: var(--topbar-height); box-sizing: border-box; align-items: center; }

/* ===== 動画・GIF ===== */
/* 一覧カード */
.gallery-item video.card-media { display: block; width: 100%; height: auto; border-radius: var(--radius-md); }
.explorer-grid .gallery-item video.card-media { width: 100%; height: 100%; object-fit: cover; }
.gif-still {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: var(--radius-md);
  opacity: 0;
  pointer-events: none;
}
.gallery-item.gif-ready .gif-still { opacity: 1; }
.gallery-item.gif-ready.is-playing .gif-still { opacity: 0; }
.media-badge {
  position: absolute;
  left: var(--sp-8);
  bottom: var(--sp-8);
  z-index: 11;
  padding: 2px var(--sp-6);
  font-size: var(--fs-2xs);
  font-weight: var(--fw-bold);
  letter-spacing: 0.04em;
  color: var(--on-media);
  background: rgba(0, 0, 0, 0.6);
  border-radius: var(--radius-xs);
  pointer-events: none;
}

/* 拡大表示 */
.modal-player[hidden] { display: none; }
.modal-overlay.is-motion .modal-canvas,
.modal-overlay.is-motion .modal-toolbar { display: none; }
.modal-player {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-12);
  padding: var(--sp-24) var(--sp-24) var(--sp-20);
}
.modal-video { max-width: 100%; max-height: 100%; background: #000; border-radius: var(--radius-sm); }
.gif-stage { position: relative; flex: 1; min-height: 0; width: 100%; display: flex; align-items: center; justify-content: center; }
.gif-stage img, .gif-stage canvas { max-width: 100%; max-height: 100%; object-fit: contain; }
/* ImageDecoder で描くときは canvas、未対応時はアニメGIF（停止中だけ canvas）を出す */
.gif-anim { display: none; }
.modal-player.is-fallback .gif-anim { display: block; }
.modal-player.is-fallback .gif-canvas { display: none; }
.modal-player.is-fallback.is-paused .gif-anim { display: none; }
.modal-player.is-fallback.is-paused .gif-canvas { display: block; }
.media-controls {
  display: flex;
  align-items: center;
  gap: var(--sp-10);
  width: min(560px, 100%);
  padding: var(--sp-6) var(--sp-12);
  background: rgba(0, 0, 0, 0.6);
  border-radius: var(--radius-pill);
  color: var(--on-media);
}
.media-play-btn {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  font-size: 12px;
  color: var(--on-media);
  background: rgba(255, 255, 255, 0.15);
  border: none;
  border-radius: 50%;
  cursor: pointer;
}
.media-play-btn:hover { background: rgba(255, 255, 255, 0.28); }
.media-play-btn:disabled { opacity: 0.4; cursor: default; }
.media-seek { flex: 1; accent-color: var(--accent); cursor: pointer; }
.media-seek:disabled { opacity: 0.4; cursor: not-allowed; }
.media-time { min-width: 64px; text-align: right; font-size: var(--fs-sm); font-variant-numeric: tabular-nums; opacity: 0.85; }

/* ----- フォルダ構成ツリーのドラッグ＆ドロップ ----- */
.tag-list { position: relative; padding-bottom: var(--sp-16); } /* 下の余白 = いちばん上の階層の末尾 */
.tree-row { touch-action: pan-y; }
body.is-tree-dragging, body.is-tree-dragging * { cursor: grabbing !important; user-select: none; }
.tree-row.is-drag-source { opacity: 0.35; }
.tree-row.drop-inside { background: var(--accent-dim); outline: 1.5px solid var(--accent); outline-offset: -1.5px; }
.tree-row.drop-invalid { background: color-mix(in srgb, var(--danger) 12%, transparent); }
.tree-row.just-moved { animation: treeJustMoved 0.9s ease-out; }
@keyframes treeJustMoved { from { background: var(--accent-dim); } to { background: transparent; } }
.tree-drop-line {
  display: none;
  position: absolute;
  left: calc(var(--sp-2) + var(--depth, 0) * var(--tree-indent) + var(--tree-arrow-size));
  right: var(--sp-4);
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
  pointer-events: none;
  z-index: 5;
}
.tree-drop-line::before {
  content: "";
  position: absolute;
  left: -4px;
  top: -3px;
  width: 8px;
  height: 8px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  background: var(--sidebar-bg);
  box-sizing: border-box;
}
.tree-drag-ghost {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-width: 260px;
  padding: var(--sp-6) var(--sp-10);
  background: var(--bg-secondary);
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  box-shadow: 0 8px 24px var(--shadow);
  pointer-events: none;
}
.tree-drag-ghost-name { font-size: var(--fs-md); font-weight: var(--fw-semibold); color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tree-drag-ghost-action { font-size: var(--fs-sm); color: var(--accent); }
.tree-drag-ghost-action.is-invalid { color: var(--danger); }
body.is-tree-dragging .tag-actions { display: none !important; }