/* Design tokens */
:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", sans-serif;
  --word-page-bg: #f3f6f9;
  --word-surface: #ffffff;
  --word-surface-2: #f6f8fa;
  --word-text: #1f2328;
  --word-muted: #59636e;
  --word-border: #c8d1dc;
  --word-border-hover: #8c959f;
  --word-accent: #0969da;
  --word-accent-hover: #0757b8;
  --word-on-accent: #ffffff;
  --word-success: #1a7f37;
  --word-warning: #9a6700;
  --word-danger: #cf222e;
  --word-notice-bg: #ddf4ff;
  --word-notice-border: #9cd5ff;
  --word-notice-text: #0550ae;
  --word-focus: #54aeff;
  --word-control-height: 36px;
  --word-panel-radius: 9px;
  --word-shadow: 0 1px 2px rgb(31 35 40 / 8%);
  --word-preview-bg: #d8dee5;
  --word-preview-height: 760px;
}

/* Page foundation and accessibility */
body.word-docx-viewer-page,
body.word-docx-viewer-page * {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  margin: 0;
}

body.word-docx-viewer-page {
  min-height: 100%;
  margin: 0;
  color: var(--word-text);
  background: var(--word-page-bg);
}

.word-docx-viewer-page > main :where(button, input, select):focus-visible,
.word-docx-viewer-page > main .word-viewer-drop-zone:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--word-focus) 55%, transparent);
  outline-offset: 2px;
}

/* Kept local so the standalone viewer does not depend on site-shell utility classes. */
.word-viewer-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.word-viewer-main {
  width: min(1500px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 48px;
}

/* Page header */
.word-viewer-breadcrumb {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
  color: var(--word-muted);
  font-size: 0.875rem;
}

.word-viewer-breadcrumb a {
  color: var(--word-accent);
}

.word-viewer-page-header h1 {
  margin: 0 0 8px;
  font-size: clamp(1.65rem, 3vw, 2.2rem);
}

.word-viewer-page-header p {
  margin: 0 0 18px;
  color: var(--word-muted);
}

/* Shared surfaces */
.word-viewer-notice,
.word-viewer-panel {
  margin-bottom: 16px;
  border: 1px solid var(--word-border);
  border-radius: var(--word-panel-radius);
  background: var(--word-surface);
  box-shadow: var(--word-shadow);
}

.word-viewer-notice {
  padding: 12px 14px;
  border-color: var(--word-notice-border);
  color: var(--word-notice-text);
  background: var(--word-notice-bg);
  line-height: 1.65;
}

.word-viewer-panel {
  padding: 16px;
}

.word-viewer-section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.word-viewer-section-heading h2,
.word-viewer-caution h2 {
  margin: 0;
  font-size: 1.1rem;
}

/* File input and document stats */
.word-viewer-drop-zone {
  display: grid;
  place-items: center;
  min-height: 170px;
  padding: 24px;
  border: 2px dashed var(--word-border);
  border-radius: 10px;
  color: var(--word-muted);
  background: var(--word-surface-2);
  text-align: center;
  cursor: pointer;
}

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

.word-viewer-drop-zone strong {
  margin-bottom: 7px;
  color: var(--word-text);
}

.word-viewer-drop-zone.is-dragging {
  border-color: var(--word-accent);
  color: var(--word-accent);
  background: var(--word-notice-bg);
}

.word-viewer-drop-zone[aria-disabled="true"] {
  cursor: wait;
  opacity: 0.65;
}

.word-viewer-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 14px 0 0;
  border-top: 1px solid var(--word-border);
  border-left: 1px solid var(--word-border);
}

.word-viewer-stats div {
  min-width: 0;
  padding: 10px 12px;
  border-right: 1px solid var(--word-border);
  border-bottom: 1px solid var(--word-border);
}

.word-viewer-stats dt {
  margin-bottom: 4px;
  color: var(--word-muted);
  font-size: 0.8rem;
  font-weight: 700;
}

.word-viewer-stats dd {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.word-viewer-status-area {
  margin-top: 10px;
}

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

/* Status messages */
.word-viewer-message {
  margin: 6px 0 0;
  color: var(--word-muted);
  line-height: 1.55;
}

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

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

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

/* Viewer workspace and theme */
.word-viewer-workspace {
  padding: 0;
  overflow: hidden;
}

.word-viewer-workspace > .word-viewer-section-heading {
  margin: 0;
  padding: 12px 14px;
  border-bottom: 1px solid var(--word-border);
}

.word-viewer-workspace[data-theme="dark"] {
  color-scheme: dark;
  --word-surface: #161b22;
  --word-surface-2: #21262d;
  --word-text: #f0f6fc;
  --word-muted: #9da7b3;
  --word-border: #3d444d;
  --word-border-hover: #6e7681;
  --word-preview-bg: #0d1117;
}

.word-viewer-field {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--word-muted);
  font-size: 0.88rem;
}

/* Form controls */
.word-docx-viewer-page > main :where(button, input, select) {
  min-height: var(--word-control-height);
  border: 1px solid var(--word-border);
  border-radius: 6px;
  color: inherit;
  font: inherit;
  background: var(--word-surface-2);
}

.word-docx-viewer-page > main :where(button, select) {
  padding: 6px 11px;
}

.word-docx-viewer-page > main input {
  padding: 6px 9px;
}

.word-docx-viewer-page > main button {
  font-weight: 700;
  cursor: pointer;
}

/* Interactive and disabled states */
.word-docx-viewer-page > main button:hover:not(:disabled) {
  border-color: var(--word-border-hover);
}

.word-docx-viewer-page > main button:disabled,
.word-docx-viewer-page > main input:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

/* Button variants */
.word-docx-viewer-page > main .word-viewer-button--primary {
  border-color: var(--word-accent);
  color: var(--word-on-accent);
  background: var(--word-accent);
}

.word-docx-viewer-page > main .word-viewer-button--primary:hover:not(:disabled) {
  border-color: var(--word-accent-hover);
  background: var(--word-accent-hover);
}

.word-docx-viewer-page > main .word-viewer-button--danger {
  color: var(--word-danger);
}

/* Viewer toolbar */
.word-viewer-toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--word-border);
  background: var(--word-surface);
}

.word-viewer-control-group {
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 42px;
  padding: 3px 6px;
  border: 1px solid var(--word-border);
  border-radius: 7px;
  background: var(--word-surface-2);
}

.word-viewer-control-group button {
  background: var(--word-surface);
}

.word-viewer-control-group output {
  min-width: 52px;
  color: var(--word-muted);
  text-align: center;
  font-size: 0.85rem;
}

.word-viewer-control-group input[type="range"] {
  width: 110px;
  min-height: 0;
  padding: 0;
  border: 0;
  accent-color: var(--word-accent);
}

.word-viewer-page-field {
  display: flex;
  align-items: center;
  gap: 5px;
}

.word-viewer-page-field input {
  width: 64px;
}

.word-viewer-page-field span {
  min-width: 45px;
  color: var(--word-muted);
  font-size: 0.85rem;
}

.word-viewer-search-group {
  flex: 1 1 360px;
}

.word-viewer-search-group input {
  flex: 1 1 180px;
  min-width: 120px;
}

/* Document preview */
.word-viewer-preview-shell {
  position: relative;
  min-height: var(--word-preview-height);
  background: var(--word-preview-bg);
}

.word-viewer-preview-frame {
  display: block;
  width: 100%;
  height: var(--word-preview-height);
  border: 0;
  background: transparent;
}

.word-viewer-preview-frame[hidden],
.word-viewer-empty-preview[hidden] {
  display: none;
}

.word-viewer-empty-preview {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  color: var(--word-muted);
  text-align: center;
}

/* Caution */
.word-viewer-caution ul {
  margin: 12px 0 0;
  padding-left: 1.4rem;
  color: var(--word-muted);
  line-height: 1.75;
}

/* Responsive layout */
@media (max-width: 900px) {
  /* Document information */
  .word-viewer-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  /* Viewer controls */
  .word-viewer-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .word-viewer-control-group {
    flex-wrap: wrap;
  }

  .word-viewer-search-group {
    flex-basis: auto;
  }
}

@media (max-width: 600px) {
  /* Compact-page dimensions */
  :root {
    --word-preview-height: 600px;
  }

  .word-viewer-main {
    width: min(100% - 16px, 1500px);
    padding-top: 16px;
  }

  .word-viewer-panel {
    padding: 12px;
  }

  .word-viewer-workspace {
    padding: 0;
  }

  .word-viewer-section-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  /* Single-column document information */
  .word-viewer-stats {
    grid-template-columns: 1fr;
  }

  /* Keep the zoom slider usable on narrow screens */
  .word-viewer-control-group input[type="range"] {
    flex: 1 1 120px;
  }
}