/* テーマ変数とページ基盤 */
:root {
  color-scheme: light;
}

body.pptx-viewer-page {
  --pptx-page-bg: #f4f7fa;
  --pptx-panel-bg: #ffffff;
  --pptx-soft-bg: #f7f9fc;
  --pptx-toolbar-bg: #edf2f7;
  --pptx-text: #172033;
  --pptx-muted: #5c687a;
  --pptx-border: #cdd6e1;
  --pptx-primary: #0969da;
  --pptx-primary-hover: #075bbd;
  --pptx-on-primary: #ffffff;
  --pptx-success: #1a7f37;
  --pptx-warning: #9a6700;
  --pptx-error: #cf222e;
  --pptx-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
  --pptx-radius: 10px;
  --pptx-control-radius: 7px;
  --pptx-control-height: 36px;
  --pptx-viewer-grid-min-height: 620px;
  --pptx-preview-min-height: 620px;
  --pptx-slide-aspect-ratio: 16 / 9;
  --pptx-slide-font-family: Arial, "Yu Gothic UI", sans-serif;
  --pptx-slide-canvas-bg: #ffffff;
  --pptx-slide-text-color: #172033;
  --pptx-slide-table-border: #7a8798;
  --pptx-slide-shadow: 0 5px 24px rgba(15, 23, 42, 0.22);
  --pptx-fullscreen-bg: #111111;
  --pptx-search-highlight: #f59e0b;
  margin: 0;
  color: var(--pptx-text);
  background: var(--pptx-page-bg);
  font-family: Inter, "Noto Sans JP", "Yu Gothic UI", "Meiryo", sans-serif;
}

body.pptx-viewer-page,
body.pptx-viewer-page * {
  box-sizing: border-box;
}

body.pptx-viewer-page[data-theme="dark"] {
  color-scheme: dark;
  --pptx-page-bg: #11161d;
  --pptx-panel-bg: #171d25;
  --pptx-soft-bg: #202733;
  --pptx-toolbar-bg: #252e3a;
  --pptx-text: #f3f6fb;
  --pptx-muted: #aab5c4;
  --pptx-border: #3a4656;
  --pptx-primary: #2f81f7;
  --pptx-primary-hover: #58a6ff;
  --pptx-success: #56d364;
  --pptx-warning: #e3b341;
  --pptx-error: #ff7b72;
  --pptx-shadow: none;
}

/* ページ枠と共通パネル */
.pptx-viewer-main {
  width: min(1700px, calc(100% - 32px));
  margin-block: 0;
  margin-inline: auto;
  padding-block: 24px 48px;
  padding-inline: 0;
}

.pptx-page-header {
  margin-block-end: 16px;
}

.pptx-page-header h1 {
  margin-block: 10px 6px;
  margin-inline: 0;
  font-size: clamp(1.5rem, 2.8vw, 2rem);
}

.pptx-page-header p {
  margin: 0;
  color: var(--pptx-muted);
}

.pptx-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--pptx-muted);
  font-size: 0.875rem;
}

.pptx-breadcrumb a {
  color: var(--pptx-primary);
}

.pptx-notice,
.pptx-panel {
  margin-block-end: 14px;
  border: 1px solid var(--pptx-border);
  border-radius: var(--pptx-radius);
  background: var(--pptx-panel-bg);
  box-shadow: var(--pptx-shadow);
}

.pptx-notice {
  padding: 12px 14px;
  color: var(--pptx-primary);
  background: color-mix(in srgb, var(--pptx-primary) 8%, var(--pptx-panel-bg));
}

.pptx-panel {
  padding: 14px;
}

.pptx-panel-title,
.pptx-detail-title {
  margin: 0;
}

.pptx-panel-title {
  font-size: 1rem;
}

.pptx-detail-title {
  font-size: 0.875rem;
}

.pptx-section-heading,
.pptx-toolbar,
.pptx-control-group {
  display: flex;
  align-items: center;
}

.pptx-field,
.pptx-page-field {
  display: inline-flex;
  align-items: center;
}

.pptx-section-heading {
  justify-content: space-between;
  gap: 12px;
  margin-block-end: 12px;
}

/* ファイル選択と状態表示 */
.pptx-drop-zone {
  display: grid;
  place-items: center;
  min-height: 120px;
  padding: 20px;
  border: 2px dashed var(--pptx-border);
  border-radius: 8px;
  color: var(--pptx-muted);
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.pptx-drop-zone strong,
.pptx-drop-zone span {
  display: block;
}

.pptx-drop-zone strong {
  margin-block-end: 6px;
  color: var(--pptx-text);
}

.pptx-drop-zone:is(:hover, :focus-visible, .is-dragging) {
  border-color: var(--pptx-primary);
  background: color-mix(in srgb, var(--pptx-primary) 7%, var(--pptx-panel-bg));
  outline: none;
}

.pptx-stats {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
  margin-block: 12px 0;
  margin-inline: 0;
}

.pptx-stats > div {
  min-width: 0;
  padding: 10px 12px;
  border: 1px solid var(--pptx-border);
  border-radius: var(--pptx-control-radius);
  background: var(--pptx-soft-bg);
}

.pptx-stats dt {
  margin-block-end: 4px;
  color: var(--pptx-muted);
  font-size: 0.75rem;
}

.pptx-stats dd {
  overflow-wrap: anywhere;
  margin: 0;
  font-size: 0.875rem;
  font-weight: 650;
}

.pptx-status-area {
  margin-block-start: 10px;
}

.pptx-status-area progress {
  width: 100%;
}

.pptx-message {
  min-height: 1.5em;
  margin-block: 8px 0;
  margin-inline: 0;
  color: var(--pptx-message-color, var(--pptx-muted));
}

.pptx-message[data-type="success"] {
  --pptx-message-color: var(--pptx-success);
}

.pptx-message[data-type="warning"] {
  --pptx-message-color: var(--pptx-warning);
}

.pptx-message[data-type="error"] {
  --pptx-message-color: var(--pptx-error);
}

/* ビューワー操作 */
.pptx-workspace {
  padding: 0;
  overflow: hidden;
}

.pptx-workspace-heading {
  padding-block: 14px 0;
  padding-inline: 14px;
}

.pptx-field {
  gap: 7px;
  color: var(--pptx-muted);
  font-size: 0.8125rem;
}

.pptx-viewer-page :where(button, input, select) {
  min-height: var(--pptx-control-height);
  border: 1px solid var(--pptx-border);
  border-radius: var(--pptx-control-radius);
  color: var(--pptx-text);
  background: var(--pptx-panel-bg);
  font: inherit;
}

.pptx-viewer-page :where(input, select) {
  padding: 6px 10px;
}

.pptx-viewer-page button {
  padding: 6px 12px;
  font-weight: 650;
  cursor: pointer;
}

.pptx-viewer-page button:not(:disabled):hover {
  border-color: var(--pptx-primary);
}

.pptx-viewer-page :where(button, input, select, [role="button"]):focus-visible {
  outline: 3px solid color-mix(in srgb, var(--pptx-primary) 35%, transparent);
  outline-offset: 2px;
}

.pptx-viewer-page :where(button, input, select):disabled {
  opacity: 0.52;
  cursor: not-allowed;
}

.pptx-viewer-page .pptx-button-primary {
  border-color: var(--pptx-primary);
  color: var(--pptx-on-primary);
  background: var(--pptx-primary);
}

.pptx-viewer-page .pptx-button-primary:not(:disabled):hover {
  background: var(--pptx-primary-hover);
}

.pptx-viewer-page .pptx-button-danger {
  color: var(--pptx-error);
}

.pptx-toolbar {
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 14px;
  border-block: 1px solid var(--pptx-border);
  background: var(--pptx-soft-bg);
}

.pptx-control-group {
  gap: 6px;
  min-width: 0;
}

.pptx-control-group input[type="range"] {
  width: 110px;
}

.pptx-control-group output {
  min-width: 52px;
  color: var(--pptx-muted);
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.pptx-page-field {
  gap: 6px;
}

.pptx-page-field input {
  width: 72px;
}

.pptx-search-group {
  flex: 1 1 390px;
}

.pptx-search-group input {
  flex: 1 1 180px;
  min-width: 130px;
}

/* ビューワー表示領域 */
.pptx-viewer-grid {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr) 270px;
  min-height: var(--pptx-viewer-grid-min-height);
}

.pptx-thumbnail-sidebar,
.pptx-details {
  min-width: 0;
  background: var(--pptx-soft-bg);
}

.pptx-thumbnail-sidebar {
  overflow: auto;
  border-inline-end: 1px solid var(--pptx-border);
}

.pptx-thumbnail-list {
  display: grid;
  gap: 8px;
  padding: 10px;
}

.pptx-thumbnail {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 5px;
  width: 100%;
  height: auto;
  padding: 7px;
  text-align: start;
}

.pptx-thumbnail.is-current {
  border-color: var(--pptx-primary);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--pptx-primary) 22%, transparent);
}

.pptx-thumbnail-number {
  grid-row: 1 / 3;
  color: var(--pptx-muted);
  font-size: 0.75rem;
  text-align: center;
}

.pptx-thumbnail-preview {
  display: block;
  width: 100%;
  aspect-ratio: var(--pptx-slide-aspect-ratio);
  border: 1px solid var(--pptx-border);
  background: var(--pptx-slide-canvas-bg);
}

.pptx-thumbnail-title {
  overflow: hidden;
  color: var(--pptx-muted);
  font-size: 0.72rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pptx-preview-column {
  min-width: 0;
  min-height: var(--pptx-preview-min-height);
  background: var(--pptx-toolbar-bg);
}

.pptx-empty-preview {
  display: grid;
  place-items: center;
  min-height: var(--pptx-preview-min-height);
  padding: 24px;
  color: var(--pptx-muted);
  text-align: center;
}

.pptx-slide-viewport {
  overflow: auto;
  min-height: var(--pptx-preview-min-height);
  max-height: 78vh;
  padding: 18px;
}

.pptx-slide-viewport:fullscreen {
  display: grid;
  place-items: center;
  background: var(--pptx-fullscreen-bg);
}

.pptx-slide-stage {
  min-width: 420px;
  margin-block: 0;
  margin-inline: auto;
}

.pptx-slide-svg {
  display: block;
  width: 100%;
  aspect-ratio: var(--pptx-slide-aspect-ratio);
  overflow: hidden;
  background: var(--pptx-slide-canvas-bg);
  box-shadow: var(--pptx-slide-shadow);
}

/* スライド内部の描画 */
.pptx-slide-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 100%;
  height: 100%;
  overflow: hidden;
  padding: 0.35em;
  font-family: var(--pptx-slide-font-family);
  line-height: 1.2;
}

.pptx-slide-text p {
  margin: 0;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.pptx-slide-table {
  width: 100%;
  height: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  color: var(--pptx-slide-text-color);
  font-family: var(--pptx-slide-font-family);
  font-size: 12px;
}

.pptx-slide-table td {
  overflow: hidden;
  padding: 4px;
  border: 1px solid var(--pptx-slide-table-border);
  overflow-wrap: anywhere;
}

.pptx-search-outline {
  fill: none;
  stroke: var(--pptx-search-highlight);
  stroke-width: 90000;
  vector-effect: non-scaling-stroke;
}

.pptx-details {
  overflow: auto;
  border-inline-start: 1px solid var(--pptx-border);
}

.pptx-details section {
  padding: 13px;
  border-block-end: 1px solid var(--pptx-border);
}

.pptx-detail-content {
  margin-block: 8px 0;
  margin-inline: 0;
  color: var(--pptx-muted);
  font-size: 0.8125rem;
  line-height: 1.65;
  white-space: pre-wrap;
}

ul.pptx-detail-content {
  padding-inline-start: 20px;
}

.pptx-caution-list {
  margin-block: 10px 0;
  margin-inline: 0;
  padding-inline-start: 22px;
  line-height: 1.75;
}

/* アクセシビリティ補助 */
.pptx-visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* レスポンシブレイアウト */
@media (max-width: 1100px) {
  .pptx-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .pptx-viewer-grid {
    grid-template-columns: 180px minmax(0, 1fr);
  }

  .pptx-details {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-block-start: 1px solid var(--pptx-border);
    border-inline-start: 0;
  }
}

@media (max-width: 720px) {
  body.pptx-viewer-page {
    --pptx-preview-min-height: 420px;
  }

  .pptx-viewer-main {
    width: min(100% - 16px, 1700px);
    padding-block-start: 14px;
  }

  .pptx-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pptx-control-group,
  .pptx-search-group {
    width: 100%;
    flex-wrap: wrap;
  }

  .pptx-viewer-grid {
    display: block;
  }

  .pptx-thumbnail-sidebar {
    border-inline-end: 0;
    border-block-end: 1px solid var(--pptx-border);
  }

  .pptx-thumbnail-list {
    display: flex;
    overflow-x: auto;
  }

  .pptx-thumbnail {
    flex: 0 0 160px;
  }

  .pptx-slide-viewport {
    padding: 10px;
  }

  .pptx-slide-stage {
    min-width: 320px;
  }

  .pptx-details {
    display: block;
  }
}