/* ==========================================================================
   DirForge - Stylesheet
   A clean, GitHub-inspired directory listing UI.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens — CSS Custom Properties
   -------------------------------------------------------------------------- */

:root {
  /* Primary */
  --color-primary: #0969da;
  --color-primary-hover: #0550ae;
  --color-primary-subtle: #ddf4ff;

  /* Backgrounds */
  --color-bg: #ffffff;
  --color-bg-secondary: #f6f8fa;

  /* Surfaces */
  --color-surface: #ffffff;
  --color-surface-hover: #f3f5f8;

  /* Borders */
  --color-border: #d0d7de;
  --color-border-subtle: #e8ecf0;

  /* Text */
  --color-text: #1f2328;
  --color-text-secondary: #59636e;
  --color-text-tertiary: #656d76;
  --color-text-link: #0969da;
  --color-text-link-hover: #0550ae;

  /* Semantic */
  --color-success: #1a7f37;
  --color-warning: #9a6700;
  --color-danger: #cf222e;

  /* Table rows */
  --color-row-odd: #ffffff;
  --color-row-even: #f6f8fa;
  --color-row-hover: #eef3f9;

  /* Table header */
  --color-header-bg: #f6f8fa;
  --color-header-border: #d0d7de;

  /* Elevation */
  --shadow-sm: 0 1px 2px rgba(31, 35, 40, 0.04);
  --shadow-md: 0 3px 6px rgba(31, 35, 40, 0.06), 0 1px 3px rgba(31, 35, 40, 0.04);
  --shadow-lg: 0 8px 24px rgba(31, 35, 40, 0.12);
  --shadow-overlay: 0 16px 32px rgba(31, 35, 40, 0.12);

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;

  /* Typography */
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans",
    Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
  --font-size-xs: 12px;
  --font-size-sm: 13px;
  --font-size-md: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 20px;

  /* Motion */
  --transition-fast: 120ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;
}

/* --------------------------------------------------------------------------
   1b. Dark Theme Overrides
   -------------------------------------------------------------------------- */

[data-theme="dark"] {
  --color-primary: #58a6ff;
  --color-primary-hover: #79c0ff;
  --color-primary-subtle: rgba(56, 139, 253, 0.15);

  --color-bg: #0d1117;
  --color-bg-secondary: #090c10;

  --color-surface: #161b22;
  --color-surface-hover: #1c2128;

  --color-border: #30363d;
  --color-border-subtle: #2d333b;

  --color-text: #e6edf3;
  --color-text-secondary: #8b949e;
  --color-text-tertiary: #848d97;
  --color-text-link: #58a6ff;
  --color-text-link-hover: #79c0ff;

  --color-success: #3fb950;
  --color-warning: #d29922;
  --color-danger: #f85149;

  --color-row-odd: #0d1117;
  --color-row-even: #161b22;
  --color-row-hover: #1c2128;

  --color-header-bg: #161b22;
  --color-header-border: #30363d;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 3px 6px rgba(0, 0, 0, 0.4), 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-overlay: 0 16px 32px rgba(0, 0, 0, 0.6);
}

/* --------------------------------------------------------------------------
   2. Reset & Base
   -------------------------------------------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-size: var(--font-size-md);
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-bg-secondary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-text-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-text-link-hover);
  text-decoration: underline;
}

a:active {
  color: var(--color-primary-hover);
}

a:visited {
  color: var(--color-text-link);
}

::selection {
  background-color: var(--color-primary-subtle);
  color: var(--color-text);
}

/* --------------------------------------------------------------------------
   3. Layout
   -------------------------------------------------------------------------- */

.container {
  max-width: 1200px;
  margin: var(--space-lg) auto;
  padding: 0 var(--space-md);
}

/* --------------------------------------------------------------------------
   4. Header
   -------------------------------------------------------------------------- */

.header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-md);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  min-height: 56px;
}

.header-title {
  margin: 0;
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-logo {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  display: block;
}

.header-btn {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

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

.header-btn:active {
  transform: scale(0.96);
}

/* Push the first non-home button (and those after it) to the right */
.header-btn:not(.home-btn):first-of-type {
  margin-left: auto;
}

.home-btn {
  margin-right: var(--space-xs);
}

/* Theme toggle icons */
[data-theme="dark"] .theme-toggle .icon-moon {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: inline;
}

.theme-toggle .icon-sun {
  display: none;
}

.theme-toggle .icon-moon {
  display: inline;
}

/* --------------------------------------------------------------------------
   5. Breadcrumbs
   -------------------------------------------------------------------------- */

.header-title .breadcrumb-link {
  color: var(--color-text-link);
  text-decoration: none;
  font-weight: 500;
  border-radius: var(--radius-sm);
  padding: 2px 4px;
  margin: 0 -4px;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.header-title .breadcrumb-link:hover {
  color: var(--color-text-link-hover);
  background-color: var(--color-surface-hover);
  text-decoration: none;
}

.header-title .breadcrumb-separator {
  color: var(--color-text-tertiary);
  user-select: none;
  margin: 0 var(--space-xs);
  font-weight: 400;
}

.header-title .breadcrumb-current {
  color: var(--color-text);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   6. Search
   -------------------------------------------------------------------------- */

.search-panel {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.search-input {
  flex: 1;
  min-width: 180px;
  height: 36px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  padding: 0 var(--space-sm);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-subtle);
}

.search-input::placeholder {
  color: var(--color-text-tertiary);
}

.search-btn,
.search-clear {
  flex-shrink: 0;
  height: 36px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0 12px;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: color var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

.search-btn:hover,
.search-clear:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  text-decoration: none;
}

.search-note {
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
}

/* --------------------------------------------------------------------------
   6b. Listing Summary
   -------------------------------------------------------------------------- */

.listing-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs) var(--space-sm);
  margin-bottom: var(--space-sm);
  padding: 0 var(--space-xs);
}

.listing-summary-chip {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border: 1px solid var(--color-border-subtle);
  border-radius: 999px;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  line-height: 1.45;
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   7. Table — Desktop
   -------------------------------------------------------------------------- */

table.listing {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  table-layout: fixed;
}

/* --------------------------------------------------------------------------
   8. Table — Header
   -------------------------------------------------------------------------- */

table.listing thead th {
  padding: 10px var(--space-md);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
  background-color: var(--color-header-bg);
  border-bottom: 1px solid var(--color-header-border);
  text-align: left;
  white-space: nowrap;
  user-select: none;
  position: sticky;
  top: 0;
  z-index: 1;
}

/* Column: Icon */
table.listing thead th:first-child {
  width: 52px;
  min-width: 52px;
  text-align: center;
  padding-left: var(--space-sm);
  padding-right: var(--space-sm);
  border-top-left-radius: var(--radius-lg);
}

/* Column: Modified — centered */
table.listing thead th:nth-child(3) {
  text-align: center;
}

/* Column: Actions — right-aligned */
table.listing thead th:nth-child(5) {
  text-align: right;
}

/* Column: Size — right-aligned */
table.listing thead th:nth-child(4) {
  text-align: right;
}

/* Last header — round corner */
table.listing thead th:last-child {
  border-top-right-radius: var(--radius-lg);
}

/* Sort links */
.sort-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 2px var(--space-xs);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.sort-link:hover {
  color: var(--color-primary);
  background-color: var(--color-primary-subtle);
  text-decoration: none;
}

.sort-arrow {
  font-size: 10px;
  opacity: 0.7;
}

/* Calc dir sizes button (in Size header) */
.calc-sizes-btn {
  display: inline-flex;
  align-items: center;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 2px 4px;
  color: var(--color-text-secondary);
  line-height: 1;
  vertical-align: middle;
  margin-left: var(--space-xs);
  transition: color var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

.calc-sizes-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background-color: var(--color-primary-subtle);
}

.calc-sizes-btn:disabled {
  opacity: 0.4;
  cursor: default;
}

.calc-sizes-btn:disabled:hover {
  color: var(--color-text-secondary);
  border-color: var(--color-border);
  background-color: transparent;
}

/* --------------------------------------------------------------------------
   9. Table — Cells
   -------------------------------------------------------------------------- */

table.listing td {
  padding: 10px var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border-subtle);
  border-top: none;
  border-left: none;
  border-right: none;
  vertical-align: middle;
  transition: background-color var(--transition-normal);
}

/* Column: Icon */
table.listing td:first-child {
  width: 52px;
  min-width: 52px;
  text-align: center;
  padding-left: var(--space-sm);
  padding-right: var(--space-sm);
}

/* Column: Filename */
.filename-cell {
  text-align: left;
  padding-left: var(--space-md);
  padding-right: var(--space-lg);
  font-size: var(--font-size-sm);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 0;
  width: 100%;
}

.filename-cell a {
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.filename-cell a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

/* Column: Date */
table.listing td.date-cell {
  text-align: center;
  white-space: nowrap;
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
}

table.listing td.date-cell.date-cell-today {
  color: var(--color-text) !important;
}

/* Age badges */
.age-badge {
  display: inline-block;
  padding: 1px 6px;
  margin-left: 6px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.02em;
  vertical-align: middle;
  white-space: nowrap;
}

.age-today {
  background: var(--color-primary-subtle);
  color: var(--color-primary);
}

.age-yesterday {
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
}

.age-week {
  background: var(--color-bg-secondary);
  color: var(--color-text-tertiary);
}

/* Column: Size */
.size-cell {
  text-align: right;
  white-space: nowrap;
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  font-feature-settings: "tnum" 1;
}

/* Column: Actions */
.actions-cell {
  text-align: right;
  white-space: nowrap;
  width: 140px;
  min-width: 140px;
  padding-left: var(--space-xs);
  padding-right: var(--space-xs);
}

/* Row styling */
table.listing tbody tr:last-child td {
  border-bottom: none;
}

table.listing tbody tr:last-child td:first-child {
  border-bottom-left-radius: var(--radius-lg);
}

table.listing tbody tr:last-child td:last-child {
  border-bottom-right-radius: var(--radius-lg);
}

table.listing tbody tr:nth-child(odd) {
  background-color: var(--color-row-odd);
}

table.listing tbody tr:nth-child(even) {
  background-color: var(--color-row-even);
}

table.listing tbody tr:hover {
  background-color: var(--color-row-hover);
}

/* Parent row (..) */
.parent-row {
  background-color: var(--color-bg-secondary) !important;
}

.parent-row td {
  border-bottom: 1px solid var(--color-border) !important;
}

.parent-row .filename-cell a {
  font-weight: 500;
  color: var(--color-text-secondary);
}

.parent-row:hover {
  background-color: var(--color-surface-hover) !important;
}

/* --------------------------------------------------------------------------
   10. File Icons
   -------------------------------------------------------------------------- */

.file-icon {
  width: 28px;
  height: 28px;
  vertical-align: middle;
  display: inline-block;
  opacity: 0.75;
  transition: opacity var(--transition-fast);
}

table.listing tr:hover .file-icon {
  opacity: 1;
}

/* --------------------------------------------------------------------------
   11. Action Buttons
   -------------------------------------------------------------------------- */

.action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: none;
  background: none;
  color: var(--color-text-tertiary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.action-btn:hover {
  color: var(--color-primary);
  background-color: var(--color-primary-subtle);
  text-decoration: none;
}

.action-btn:active {
  transform: scale(0.92);
}

/* --------------------------------------------------------------------------
   12. Share Modal
   -------------------------------------------------------------------------- */

.share-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: var(--space-md);
  animation: fadeIn 150ms ease;
}

[data-theme="dark"] .share-modal {
  background: rgba(0, 0, 0, 0.7);
}

.share-modal[hidden] {
  display: none;
}

.share-dialog {
  width: 100%;
  max-width: 560px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-overlay);
  padding: var(--space-lg);
  animation: modalSlideIn 200ms ease;
}

.share-title {
  margin: 0 0 var(--space-md) 0;
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.share-row {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
  align-items: center;
}

.share-label {
  min-width: 70px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.share-select,
.share-output {
  flex: 1;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  padding: var(--space-xs) var(--space-sm);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-fast);
}

.share-select:focus,
.share-output:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-subtle);
}

.share-output {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
}

.share-checkbox {
  appearance: none;
  -webkit-appearance: none;
  width: 1rem;
  height: 1rem;
  margin: 0;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background-color: var(--color-bg);
  display: inline-grid;
  place-content: center;
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.share-checkbox::before {
  content: "";
  width: 0.58rem;
  height: 0.58rem;
  transform: scale(0);
  transition: transform var(--transition-fast);
  clip-path: polygon(14% 44%, 0 65%, 43% 100%, 100% 22%, 80% 6%, 43% 62%);
  background-color: #ffffff;
}

.share-checkbox:checked {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
}

.share-checkbox:checked::before {
  transform: scale(1);
}

.share-checkbox:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--color-primary-subtle);
}

.share-copy-inline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.share-copy-inline:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.share-copy-inline.copied {
  color: var(--color-success, #22c55e);
  border-color: var(--color-success, #22c55e);
}

.share-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.share-btn {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  padding: 6px 14px;
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: color var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

.share-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.share-btn:active {
  transform: scale(0.97);
}

/* Primary variant — filled call-to-action */
.share-btn-primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
}

.share-btn-primary:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: #ffffff;
}

/* Ghost variant — minimal, de-emphasized */
.share-btn-ghost {
  border-color: transparent;
  color: var(--color-text-tertiary);
}

.share-btn-ghost:hover {
  border-color: var(--color-border);
  color: var(--color-text-secondary);
}

.share-warning {
  margin: var(--space-sm) 0 0 0;
  color: var(--color-warning);
  font-size: var(--font-size-xs);
}

.share-error {
  margin: var(--space-sm) 0 0 0;
  color: var(--color-danger);
  font-size: var(--font-size-xs);
  display: none;
}

/* --------------------------------------------------------------------------
   12b. Preview Modal
   -------------------------------------------------------------------------- */

.preview-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 60;
  padding: var(--space-md);
  animation: fadeIn 150ms ease;
}

[data-theme="dark"] .preview-modal {
  background: rgba(0, 0, 0, 0.75);
}

.preview-modal[hidden] {
  display: none;
}

.preview-dialog {
  width: 100%;
  max-width: 900px;
  max-height: 90vh;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-overlay);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalSlideIn 200ms ease;
}

.preview-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-border-subtle);
  min-height: 52px;
}

.preview-header-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  opacity: 0.75;
}

.preview-header-name {
  flex: 1;
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.preview-download-btn,
.preview-close-btn {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.preview-download-btn:hover,
.preview-close-btn:hover {
  color: var(--color-text);
  border-color: var(--color-text-secondary);
  background-color: var(--color-surface-hover);
}

.preview-content {
  flex: 1;
  overflow: auto;
  padding: var(--space-md) var(--space-lg);
  min-height: 120px;
}

.preview-loading {
  text-align: center;
  color: var(--color-text-tertiary);
  padding: var(--space-xl) 0;
}

/* Text preview */
.preview-text-wrap {
  overflow: auto;
}

.preview-text-wrap pre {
  margin: 0;
  padding: var(--space-md);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-all;
  overflow-x: auto;
  max-height: 60vh;
}

.preview-truncated {
  margin-top: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-primary-subtle);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* Image preview */
.preview-image {
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-image img {
  max-width: 100%;
  max-height: 65vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

/* Video preview */
.preview-video {
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-video video {
  max-width: 100%;
  max-height: 65vh;
  border-radius: var(--radius-sm);
}

/* Audio preview */
.preview-audio {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) 0;
}

.preview-audio audio {
  width: 100%;
  max-width: 500px;
}

/* PDF preview */
.preview-pdf {
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-pdf iframe {
  width: 100%;
  height: 65vh;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
}

/* No preview */
.preview-none {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) 0;
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
}

.preview-none-icon {
  width: 64px;
  height: 64px;
  opacity: 0.35;
  margin-bottom: var(--space-md);
}

.preview-text-btn {
  margin-top: var(--space-sm);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  padding: 4px 14px;
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 500;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.preview-text-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.preview-text-btn:disabled {
  opacity: 0.55;
  cursor: default;
}

/* Metadata bar */
.preview-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  border-top: 1px solid var(--color-border-subtle);
}

.preview-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 2px var(--space-sm);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.preview-chip-label {
  font-weight: 600;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  font-size: 10px;
  letter-spacing: 0.04em;
}

/* Hash button */
.preview-hash-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  padding: 2px 12px;
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 500;
  cursor: pointer;
  margin-left: auto;
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.preview-hash-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.preview-hash-btn:disabled {
  opacity: 0.55;
  cursor: default;
}

/* Hash row */
.preview-hashes {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  padding: 0 var(--space-lg);
}

.preview-hashes:not(:empty) {
  padding-top: var(--space-xs);
  padding-bottom: var(--space-sm);
  border-top: 1px solid var(--color-border-subtle);
}

.preview-hash-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 2px var(--space-sm);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.preview-hash-chip:hover {
  border-color: var(--color-primary);
}

.preview-hash-chip .hash-check {
  display: none;
  color: var(--color-success, #22c55e);
  flex-shrink: 0;
}

.preview-hash-chip.copied {
  border-color: var(--color-success, #22c55e);
}

.preview-hash-chip.copied .hash-check {
  display: inline-block;
}

.preview-hash-value {
  font-family: var(--font-mono, monospace);
  font-size: 10px;
  letter-spacing: 0.02em;
  word-break: break-all;
}

.preview-hash-error {
  font-size: var(--font-size-xs);
  color: var(--color-danger, #ef4444);
  padding: var(--space-xs) 0;
}

/* Footer / navigation */
.preview-footer {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  border-top: 1px solid var(--color-border-subtle);
}

.preview-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  padding: 4px 12px;
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.preview-nav-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  text-decoration: none;
}

.preview-nav-btn:disabled {
  opacity: 0.35;
  cursor: default;
}

.preview-nav-btn:disabled:hover {
  color: var(--color-text-secondary);
  border-color: var(--color-border);
}

.preview-position {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  min-width: 48px;
  text-align: center;
}

.preview-open-link {
  margin-left: auto;
}

/* --------------------------------------------------------------------------
   12c. View Toggle
   -------------------------------------------------------------------------- */

/* In list mode (default): show list icon, hide grid icon */
.view-toggle-btn .icon-grid-view {
  display: none;
}

.view-toggle-btn .icon-list-view {
  display: inline;
}

/* In grid mode: show grid icon, hide list icon; hide table, show grid */
[data-view="grid"] .view-toggle-btn .icon-grid-view {
  display: inline;
}

[data-view="grid"] .view-toggle-btn .icon-list-view {
  display: none;
}

[data-view="grid"] table.listing {
  display: none;
}

[data-view="grid"] .grid-view {
  display: block !important;
}

/* --------------------------------------------------------------------------
   12d. Grid View
   -------------------------------------------------------------------------- */

.grid-view[hidden] {
  display: none;
}

.grid-view {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-md);
  overflow: hidden;
}

.grid-sort-bar {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
}

.grid-sort-pill {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 4px 12px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.grid-sort-pill:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  text-decoration: none;
}

.grid-sort-pill.active {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-subtle);
}

.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--space-md);
}

.grid-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-sm);
  text-decoration: none;
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
  cursor: pointer;
  overflow: hidden;
  min-width: 0;
}

.grid-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  background-color: var(--color-surface-hover);
  text-decoration: none;
  color: var(--color-text);
}

.grid-card:active {
  transform: scale(0.98);
}

.grid-card-thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 140px;
  margin-bottom: var(--space-sm);
  overflow: hidden;
}

.grid-card-thumbnail {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

.grid-card-svg {
  width: 64px;
  height: 64px;
  opacity: 0.7;
}

.grid-card:hover .grid-card-svg {
  opacity: 1;
}

.grid-card-svg-fallback {
  /* Hidden by default, shown via JS onerror */
}

.grid-card-name {
  width: 100%;
  text-align: center;
  font-size: var(--font-size-sm);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--color-text);
  line-height: 1.4;
}

.grid-card-parent .grid-card-svg {
  opacity: 0.5;
}

.grid-empty {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
}

.grid-empty svg {
  display: block;
  margin: 0 auto var(--space-sm);
  opacity: 0.35;
}

/* --------------------------------------------------------------------------
   13. Empty State
   -------------------------------------------------------------------------- */

.empty-state {
  text-align: center;
  padding: var(--space-xl) var(--space-md) !important;
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
}

.empty-state svg {
  display: block;
  margin: 0 auto var(--space-sm);
  opacity: 0.35;
}

/* --------------------------------------------------------------------------
   14. Footer
   -------------------------------------------------------------------------- */

.footer {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) var(--space-lg);
  margin-top: var(--space-md);
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

.footer a {
  color: var(--color-text-tertiary);
}

.footer a:hover {
  color: var(--color-text-secondary);
}

.footer .version {
  opacity: 0.5;
  margin-left: 0.3em;
  font-size: 0.9em;
}

/* --------------------------------------------------------------------------
   15. Accessibility — Focus & Interaction
   -------------------------------------------------------------------------- */

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Remove the double ring on inputs (they have box-shadow focus instead) */
.search-input:focus-visible,
.share-select:focus-visible,
.share-output:focus-visible {
  outline: none;
}

/* --------------------------------------------------------------------------
   16. Animations
   -------------------------------------------------------------------------- */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(4px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-8px) scale(0.98);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.listing tbody tr {
  animation: fadeIn 200ms ease both;
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
  .listing tbody tr {
    animation: none;
  }

  .share-dialog,
  .preview-dialog {
    animation: none;
  }
}

/* --------------------------------------------------------------------------
   17. Responsive — Tablet (<=768px)
   -------------------------------------------------------------------------- */

@media screen and (max-width: 768px) {
  .container {
    margin: var(--space-sm) auto;
    padding: 0 var(--space-sm);
  }

  /* ------ Header ------ */
  /* Layout: title on row 1 (full width), nav+buttons on row 2
     Row 1: [title ──────────────────────────────]
     Row 2: [home] [breadcrumbs ────] [share] [dl] [theme] */
  .header {
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    flex-wrap: wrap;
    gap: var(--space-sm);
    min-height: auto;
  }

  .header-title {
    flex-basis: 100%;
    order: -1;
    font-size: var(--font-size-lg);
  }

  .brand-logo {
    width: 28px;
    height: 28px;
  }

  .home-btn {
    order: 0;
    margin-right: 0;
  }

  .breadcrumbs {
    flex: 1;
    min-width: 0;
    order: 1;
  }

  .header-btn:not(.home-btn) {
    order: 2;
  }

  .header-btn:not(.home-btn):first-of-type {
    margin-left: 0;
  }

  .header-btn {
    width: 40px;
    height: 40px;
  }

  /* ------ Search ------ */
  .search-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .listing-summary {
    margin-bottom: var(--space-sm);
    padding: 0;
  }

  .listing-summary-chip {
    padding: 2px 8px;
    font-size: 11px;
  }

  .search-input {
    min-width: 0;
    width: 100%;
    flex-basis: auto;
  }

  .search-btn {
    white-space: nowrap;
  }

  .search-clear {
    grid-column: 1 / -1;
    justify-self: start;
  }

  /* ------ Table → Card layout ------ */
  table.listing {
    border-radius: var(--radius-md);
    table-layout: auto;
  }

  table.listing thead {
    display: none;
  }

  /* Each row becomes a 2-row grid:
     Row 1: [icon] [filename ────────────────────]
     Row 2:        [date] · [size]    [actions ──] */
  table.listing tbody tr {
    display: grid;
    grid-template-columns: 28px auto auto 1fr auto;
    grid-template-rows: auto auto;
    column-gap: var(--space-sm);
    align-items: center;
    padding: 10px var(--space-md);
    border-bottom: 1px solid var(--color-border-subtle);
  }

  table.listing tbody tr:last-child {
    border-bottom: none;
  }

  /* Reset all td styles within the grid */
  table.listing tbody tr td {
    display: block;
    border: none;
    padding: 0;
  }

  /* td 1 — Icon: row 1, col 1 */
  table.listing tbody tr td:first-child {
    grid-row: 1;
    grid-column: 1;
    width: 28px;
    min-width: 28px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  table.listing tbody tr td:first-child .file-icon {
    width: 24px;
    height: 24px;
  }

  /* td 2 — Filename: row 1, cols 2–5 (full remaining width) */
  table.listing tbody tr .filename-cell {
    grid-row: 1;
    grid-column: 2 / -1;
    max-width: none;
    width: auto;
    padding: 0;
    font-size: var(--font-size-md);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  /* td 3 — Date: row 2, col 2 */
  table.listing tbody tr td.date-cell {
    grid-row: 2;
    grid-column: 2;
    font-size: 11px;
    color: var(--color-text-tertiary);
    text-align: left;
    white-space: nowrap;
    line-height: 1.6;
  }

  table.listing tbody tr td.date-cell.date-cell-today {
    color: var(--color-text-secondary) !important;
  }

  .age-badge {
    display: none;
  }

  /* td 4 — Size: row 2, col 3 (with dot separator) */
  table.listing tbody tr .size-cell {
    grid-row: 2;
    grid-column: 3;
    font-size: 11px;
    color: var(--color-text-tertiary);
    text-align: left;
    white-space: nowrap;
    line-height: 1.6;
  }

  table.listing tbody tr .size-cell:not(:empty)::before {
    content: "\00b7";
    margin-right: 6px;
    color: var(--color-text-tertiary);
  }

  /* td 5 — Actions: row 2, col 5 (right-aligned) */
  table.listing tbody tr .actions-cell {
    grid-row: 2;
    grid-column: 5;
    width: auto;
    min-width: auto;
    text-align: right;
  }

  .action-btn {
    width: 36px;
    height: 36px;
    vertical-align: middle;
  }

  .action-btn svg {
    width: 16px;
    height: 16px;
  }

  /* Parent row — single-row */
  .parent-row td {
    border-bottom: none !important;
  }

  .parent-row {
    border-bottom: 1px solid var(--color-border) !important;
    grid-template-rows: auto;
  }

  .parent-row .date-cell,
  .parent-row .size-cell,
  .parent-row .actions-cell {
    display: none !important;
  }

  /* Empty state keeps table-row display */
  table.listing tbody tr:has(.empty-state) {
    display: table-row;
  }

  table.listing tbody tr:has(.empty-state) td {
    display: table-cell;
  }

  /* Grid view tablet */
  .grid-view {
    border-radius: var(--radius-md);
    padding: var(--space-sm);
  }

  .grid-container {
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: var(--space-sm);
  }

  .grid-card-thumb {
    height: 110px;
  }

  /* Share modal full width */
  .share-dialog {
    padding: var(--space-md);
  }

  /* Preview modal tablet */
  .preview-dialog {
    max-width: none;
    max-height: 95vh;
  }

  .preview-header {
    padding: var(--space-sm) var(--space-md);
  }

  .preview-content {
    padding: var(--space-sm) var(--space-md);
  }

  .preview-meta {
    padding: var(--space-sm) var(--space-md);
  }

  .preview-hashes:not(:empty) {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }

  .preview-footer {
    padding: var(--space-sm) var(--space-md);
    flex-wrap: wrap;
  }
}

/* --------------------------------------------------------------------------
   18. Responsive — Narrow Mobile (<=480px)
   -------------------------------------------------------------------------- */

@media screen and (max-width: 480px) {

  /* Edge-to-edge design */
  .container {
    margin: 0 auto;
    padding: 0;
  }

  .header {
    border-radius: 0;
    border-left: none;
    border-right: none;
    padding: var(--space-sm);
    margin-bottom: var(--space-sm);
    gap: var(--space-xs);
  }

  .header-btn {
    width: 36px;
    height: 36px;
    border: none;
  }

  .breadcrumbs {
    font-size: var(--font-size-xs);
  }

  .search-panel {
    border-radius: 0;
    border-left: none;
    border-right: none;
    margin-bottom: var(--space-sm);
  }

  .listing-summary {
    padding: 0 var(--space-sm);
    margin-bottom: var(--space-xs);
  }

  table.listing {
    border-radius: 0;
    border-left: none;
    border-right: none;
  }

  table.listing tbody tr {
    padding: var(--space-sm);
  }

  .action-btn {
    width: 32px;
    height: 32px;
  }

  /* Grid view mobile */
  .grid-view {
    border-radius: 0;
    border-left: none;
    border-right: none;
    padding: var(--space-xs);
  }

  .grid-container {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: var(--space-xs);
  }

  .grid-card {
    padding: var(--space-sm) var(--space-xs);
  }

  .grid-card-thumb {
    height: 80px;
  }

  .grid-card-svg {
    width: 48px;
    height: 48px;
  }

  .grid-card-name {
    font-size: var(--font-size-xs);
  }

  /* Share modal hugs edges */
  .share-modal {
    padding: var(--space-sm);
    align-items: flex-end;
  }

  .share-dialog {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    padding: var(--space-md);
    max-width: none;
  }

  /* Preview modal full screen on mobile */
  .preview-modal {
    padding: 0;
  }

  .preview-dialog {
    max-width: none;
    max-height: 100vh;
    height: 100vh;
    border-radius: 0;
    border: none;
  }

  .preview-footer {
    flex-wrap: wrap;
    gap: var(--space-xs);
  }

  .preview-open-link {
    flex-basis: 100%;
    justify-content: center;
    margin-left: 0;
  }
}

/* --------------------------------------------------------------------------
   19. Print
   -------------------------------------------------------------------------- */

@media print {
  body {
    background-color: white;
  }

  .header,
  table.listing {
    box-shadow: none;
    border-color: #ccc;
  }

  table.listing tbody tr:hover td {
    background-color: inherit;
  }

  .footer,
  .search-panel,
  .actions-cell,
  .share-modal,
  .preview-modal,
  .grid-view,
  .view-toggle-btn {
    display: none;
  }

  /* Force table visible for print even if grid mode was active */
  table.listing {
    display: table !important;
  }

  .listing tbody tr {
    animation: none;
  }
}