/* Modern styles for 蓝云天 文件分享 */
:root {
  --bg: linear-gradient(180deg, #071029 0%, #071a2e 60%);
  --card-bg: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.02),
    rgba(255, 255, 255, 0.01)
  );
  --card-border: rgba(255, 255, 255, 0.04);
  --card-shadow: 0 6px 18px rgba(2, 6, 23, 0.6);
  --text: #e6eef8;
  --muted: #9aa4b2;
  --accent: #1e1c51;
  --accent-2: #1e4a4a;
  --accent-high: #ffd54a; /* high-contrast accent */
  --glass: rgba(255, 255, 255, 0.04);
}

/* allow absolute controls inside card */
.card {
  position: relative;
}

/* View toggle buttons (top-right of files card) */
.batteryInfoDisplay {
  position: absolute;
  right: 88px;
  top: 8px;
  display: flex;
  gap: 8px;
  z-index: 6;
}
.view-toggle {
  position: absolute;
  right: 18px;
  top: 18px;
  display: flex;
  gap: 8px;
  z-index: 6;
}
.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.04);
  background: transparent;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.icon-btn.active {
  background: rgba(255, 255, 255, 0.03);
  color: var(--accent-high);
  border-color: rgba(255, 255, 255, 0.06);
}

/* Thumbnail grid */
.thumb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  width: 100%;
}
.thumb-item {
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.01),
    rgba(255, 255, 255, 0.005)
  );
  border-radius: 8px;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: stretch;
  box-sizing: border-box;
  position: relative;
}
.thumb-item.selected {
  outline: 2px solid rgba(255, 213, 74, 0.85);
  background: rgba(255, 213, 74, 0.08);
}
.thumb-media {
  height: 110px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.04);
  border-radius: 6px;
  overflow: hidden;
}
.thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.thumb-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #000;
}
.thumb-audio {
  width: 100%;
}
.thumb-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: var(--muted);
}
.thumb-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.thumb-name {
  color: var(--accent-high);
  font-weight: 600;
  text-decoration: none;
}
.thumb-info {
  display: flex;
  gap: 8px;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.85rem;
}
.thumb-actions {
  display: flex;
  justify-content: flex-end;
}
.selection-rect {
  position: absolute;
  border: 2px dashed rgba(255, 213, 74, 0.9);
  background: rgba(255, 213, 74, 0.14);
  pointer-events: none;
  z-index: 20;
  border-radius: 6px;
}

/* small circular delete icon for thumbnails (uploader-owned files) */
.thumb-del-icon {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  background: #ff4d6d;
  color: #fff;
  border: none;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
}
.thumb-del-icon:hover {
  transform: scale(1.06);
}

/* smaller grid on very small screens */
@media (max-width: 420px) {
  .thumb-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 8px;
  }
  .thumb-media {
    height: 90px;
  }
}

/* When in thumbnail (full) mode, expand the main container to use available viewport width
   and increase columns so thumbnails make better use of horizontal space. */
.thumb-mode .container {
  max-width: 100%;
  padding-left: 12px;
  padding-right: 12px;
}
.thumb-mode .card {
  padding-left: 12px;
  padding-right: 12px;
}
.thumb-mode #thumbContainer {
  width: 100%;
}
.thumb-mode .thumb-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
}
.thumb-mode .thumb-item {
  padding: 10px;
}

.preview-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(8px);
}
.preview-overlay .preview-content {
  position: relative;
  max-width: 92vw;
  max-height: 88vh;
  width: min(1080px, 92vw);
  padding: 16px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  justify-content: center;
  background: rgba(14, 18, 35, 0.96);
  border-radius: 16px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
}
.preview-overlay .preview-media {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  max-height: 74vh;
}
.preview-overlay .preview-media-item {
  max-width: 100%;
  max-height: 74vh;
  border-radius: 12px;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.35);
}
.preview-overlay .preview-audio,
.preview-overlay .preview-video {
  width: 100%;
  max-height: 74vh;
  border-radius: 12px;
  background: #000;
}
.preview-overlay .preview-caption {
  color: var(--text);
  font-size: 0.95rem;
  text-align: center;
  word-break: break-word;
  max-width: 100%;
}
.preview-overlay .preview-close,
.preview-overlay .preview-nav {
  position: absolute;
  border: none;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 1.6rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  backdrop-filter: blur(8px);
  transition:
    transform 0.18s ease,
    background 0.2s ease;
  z-index: 10;
}
.preview-overlay .preview-close:hover {
  background: rgba(255, 255, 255, 0.18);
  transform: scale(1.05);
}
.preview-overlay .preview-close:active {
  transform: scale(0.98);
}
.preview-overlay .preview-nav:hover {
  background: rgba(255, 255, 255, 0.18);
  transform: translateY(-50%) scale(1.05);
}
.preview-overlay .preview-nav:active {
  transform: translateY(-50%) scale(0.98);
}
.preview-overlay .preview-close {
  top: 16px;
  right: 16px;
}
.preview-overlay .preview-prev {
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  font-size: 1.8rem;
}
.preview-overlay .preview-next {
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  font-size: 1.8rem;
}
.preview-overlay .preview-prev:disabled,
.preview-overlay .preview-next:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}
.preview-overlay .preview-overlay-hidden {
  display: none;
}

/* Ensure thumb grid fills table cell and ignores table column constraints when active */
#filesTable.thumb-view {
  table-layout: fixed;
}
#filesTable.thumb-view td {
  padding: 12px;
}
#filesTable.thumb-view td > .thumb-grid {
  width: 100%;
}
html,
body {
  height: 100%;
}
body {
  font-family:
    "Inter",
    system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    "Helvetica Neue",
    Arial;
  background: var(--bg);
  color: var(--text);
  margin: 0;
  -webkit-font-smoothing: antialiased;
  /* slow and smooth theme transitions */
  transition:
    background 1200ms cubic-bezier(0.215, 0.61, 0.355, 1),
    color 900ms cubic-bezier(0.215, 0.61, 0.355, 1);
}
/* page container */
.container {
  max-width: 1100px;
  margin: 1px auto 0;
  padding: 20px 28px 28px;
}
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo {
  height: 56px;
  width: auto;
  max-height: 56px;
  border-radius: 8px;
  box-shadow: 0 6px 18px rgba(5, 8, 15, 0.6);
  object-fit: contain;
}
/* ensure light-theme logo matches dark size */
.theme-light .logo {
  height: 44px;
  max-height: 44px;
  width: auto;
}
.header h1 {
  font-size: 20px;
  margin: 0;
  font-weight: 600;
  letter-spacing: 0.2px;
}
.app-version {
  font-size: 0.9rem;
  color: var(--muted);
  font-weight: 400;
  margin-left: 8px;
}
.copyrightinfo {
  font-size: 0.9rem;
  color: var(--muted);
  font-weight: 400;
  margin-left: 8px;
}

.theme-controls {
  display: flex;
  gap: 8px;
  align-items: center;
}
.theme-btn {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.04);
  padding: 6px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition:
    background 900ms cubic-bezier(0.215, 0.61, 0.355, 1),
    border-color 700ms cubic-bezier(0.215, 0.61, 0.355, 1),
    color 700ms cubic-bezier(0.215, 0.61, 0.355, 1);
}
.theme-btn svg {
  display: block;
}
.theme-btn.active {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.08);
}

/* light theme overrides */
.theme-light {
  --bg: linear-gradient(180deg, #f6f8fb 0%, #ffffff 60%);
  --card-bg: #ffffff;
  --card-border: transparent;
  --card-shadow: 0 8px 20px rgba(15, 20, 36, 0.12);
  --text: #071029;
  --muted: #5b6b78;
  --accent: #2563eb;
  --accent-2: #06b6d4;
  --accent-high: #d97706;
}

/* remove logo shadow in light theme only */
.theme-light .logo {
  box-shadow: none !important;
  border-radius: 6px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: 18px;
  border-radius: 12px;
  margin-bottom: 16px;
  box-shadow: var(--card-shadow);
  transition:
    background 1200ms cubic-bezier(0.215, 0.61, 0.355, 1),
    border-color 900ms cubic-bezier(0.215, 0.61, 0.355, 1),
    box-shadow 1200ms cubic-bezier(0.215, 0.61, 0.355, 1);
}
.section-title {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 10px 0;
}
.upload-area {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
input[type="file"] {
  display: block;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 22px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-weight: 400;
}
.btn-primary {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: rgb(244, 238, 238);
}
.btn-secondary {
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  color: rgb(244, 238, 238);
  border: 1px solid rgba(255, 255, 255, 0.1);
}
.btn-ghost {
  background: transparent;
  color: var(--accent);
  border: 1px solid rgba(255, 255, 255, 0.04);
}
.btn-danger {
  background: #ff4d6d;
  color: white;
}
.small {
  font-size: 0.88rem;
  color: var(--muted);
}
/* Files table */
#filesTable,
.files-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
#filesTable thead th,
.files-table thead th {
  text-align: left;
  font-size: 0.85rem;
  color: var(--muted);
  padding: 10px 8px;
}
#filesTable tbody tr,
.files-table tbody tr {
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}
#filesTable td,
.files-table td {
  padding: 12px 8px;
}
#filesTable tbody td:first-child,
.files-table tbody td:first-child {
  display: flex;
  align-items: center;
  gap: 10px;
}
#filesTable tbody td:first-child .file-icon,
.files-table tbody td:first-child .file-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  min-width: 40px;
  height: 40px;
  flex-shrink: 0;
}
#filesTable tbody td:first-child .file-icon i,
.files-table tbody td:first-child .file-icon i,
#filesTable tbody td:first-child .file-svg-icon,
.files-table tbody td:first-child .file-svg-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
#filesTable td:first-child a,
.files-table td:first-child a {
  display: inline-flex;
  align-items: center;
}
/* high-contrast link styles for files and actions (dark theme default) */
#filesTable a,
#filesTable td a,
.files-table a {
  color: var(--accent-high) !important;
  text-decoration: none;
  font-weight: 600;
}
#filesTable a:hover,
#filesTable a:focus,
.files-table a:hover {
  color: #fff !important;
  text-decoration: underline;
}
#filesTable a:visited {
  color: var(--accent-high) !important;
}
#filesTable a.btn-ghost,
.files-table .btn-ghost {
  color: var(--accent-high) !important;
  border-color: rgba(255, 213, 74, 0.12);
}
#filesTable a.btn-ghost:hover {
  background: rgba(255, 213, 74, 0.06);
  color: #fff !important;
}

/* Ensure buttons (not only anchors) inside the files table use the same high-contrast accent
   so elements like the "返回上级文件夹" button match file name color in dark theme. */
#filesTable button.btn-ghost,
#filesTable .btn.btn-ghost,
.files-table button.btn-ghost {
  color: var(--accent-high) !important;
  border-color: rgba(255, 213, 74, 0.12);
  background: transparent;
}
#filesTable button.btn-ghost:hover,
.files-table button.btn-ghost:hover {
  background: rgba(255, 213, 74, 0.06);
  color: #fff !important;
}

/* thumbnail container back button and actions should match file name accent color */
#thumbContainer .btn-ghost,
.thumb-container .btn-ghost {
  color: var(--accent-high) !important;
  border-color: rgba(255, 213, 74, 0.12);
  background: transparent;
}
#thumbContainer .btn-ghost:hover,
.thumb-container .btn-ghost:hover {
  background: rgba(255, 213, 74, 0.06);
  color: #fff !important;
}

/* light theme: use default blue link color for better contrast on light background */
.theme-light #filesTable a,
.theme-light #filesTable td a,
.theme-light .files-table a {
  color: #2563eb !important;
  text-decoration: none;
  font-weight: 600;
}
.theme-light #filesTable a:hover,
.theme-light #filesTable a:focus,
.theme-light .files-table a:hover {
  color: #1746b6 !important;
  text-decoration: underline;
}
.theme-light #filesTable a:visited {
  color: #2563eb !important;
}
.theme-light #filesTable a.btn-ghost,
.theme-light .files-table .btn-ghost {
  color: #2563eb !important;
  border-color: rgba(37, 99, 235, 0.12);
}
.theme-light #filesTable a.btn-ghost:hover {
  background: rgba(37, 99, 235, 0.06);
  color: #fff !important;
}

.action-group {
  display: flex;
  gap: 8px;
  align-items: center;
}

/* 临时去掉背景 */
.file-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  min-width: 34px;
  height: 34px;
  border-radius: 10px;
  background: none;
  border: none;
  color: var(--accent-high);
  margin-right: 10px;
  transition:
    transform 180ms ease,
    box-shadow 220ms ease;
  box-sizing: border-box;
}

.file-icon:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
}
.file-icon-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  text-align: center;
}
.file-icon-inner i {
  font-size: 16px;
}
.file-icon-symbol {
  font-size: 16px;
  line-height: 1;
}
.file-icon-ext {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
  padding: 0 4px;
  border-radius: 999px;
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.22);
  color: inherit;
}
.file-icon.file-icon-image {
  background: none;
  color: var(--accent-high);
  border: none;
}
.file-icon.file-icon-video {
  background: none;
  color: var(--accent-high);
  border: none;
}
.file-icon.file-icon-audio {
  background: none;
  color: var(--accent-high);
  border: none;
}
.file-icon.file-icon-pdf {
  background: none;
  color: var(--accent-high);
  border: none;
}
.file-icon.file-icon-doc {
  background: none;
  color: var(--accent-high);
  border: none;
}
.file-icon.file-icon-sheet {
  background: none;
  color: var(--accent-high);
  border: none;
}
.file-icon.file-icon-slide {
  background: none;
  color: var(--accent-high);
  border: none;
}
.file-icon.file-icon-text {
  background: none;
  color: var(--accent-high);
  border: none;
}
.file-icon.file-icon-archive {
  background: none;
  color: var(--accent-high);
  border: none;
}
.file-icon.file-icon-folder {
  background: none;
  color: var(--accent-high);
  border: none;
}
.file-icon.file-icon-generic {
  background: none;
  color: var(--accent-high);
  border: none;
}
.thumb-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 6px;
  border: 1px dashed rgba(255, 255, 255, 0.15);
}
.thumb-placeholder i {
  font-size: 42px;
  color: rgba(255, 255, 255, 0.65);
}
.sortable {
  user-select: none;
}
@media (max-width: 720px) {
  .container {
    padding: 16px;
    margin: 18px;
  }
  .header h1 {
    font-size: 18px;
  }
  .logo {
    height: 44px;
  }
  #filesTable td,
  .files-table td {
    padding: 10px 6px;
  }
}

/* Pagination controls styling */
#paginationControls .btn {
  color: #ffff00;
}
.theme-light #paginationControls .btn {
  color: var(--accent);
}

/* Mobile-specific improvements: allow long file names to wrap, reduce padding, and enable touch-friendly horizontal scrolling */
@media (max-width: 480px) {
  .container {
    padding: 12px;
    margin: 12px;
  }
  .card {
    padding: 14px;
  }
  /* Make the files table scrollable on very small screens while allowing content to wrap */
  #filesTable,
  .files-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  /* Keep header readable but allow body rows to flow */
  #filesTable thead,
  .files-table thead {
    display: table-header-group;
  }
  #filesTable thead th {
    white-space: nowrap;
  }
  #filesTable tbody,
  .files-table tbody {
    display: block;
  }
  #filesTable tbody tr,
  .files-table tbody tr {
    display: table-row;
    width: 100%;
  }
  /* Allow cells and links to wrap so long filenames don't overflow */
  #filesTable td,
  .files-table td {
    white-space: normal;
    word-break: break-word;
    padding: 10px 8px;
  }
  #filesTable a,
  .files-table a {
    word-break: break-word;
    white-space: normal;
  }
  /* Optionally hide less-important columns (size and modification time) to conserve horizontal space */
  #filesTable thead th:nth-child(2),
  #filesTable thead th:nth-child(3),
  #filesTable td:nth-child(2),
  #filesTable td:nth-child(3) {
    min-width: 80px;
  }
  /* Use CSS Grid to render each row as two logical lines on very small screens:
     - first row: file icon + name (spans full width)
     - second row: size | modified time | actions (side-by-side)
  */
  #filesTable tbody tr,
  .files-table tbody tr {
    display: grid;
    grid-template-columns: 1fr auto auto;
    grid-template-rows: auto auto;
    grid-template-areas: "name name name" "size mtime actions";
    gap: 6px 12px;
    align-items: center;
    padding: 8px 6px;
  }
  #filesTable tbody td,
  .files-table tbody td {
    display: block; /* become grid items */
    padding: 6px 6px;
  }
  #filesTable tbody td:nth-child(1) {
    grid-area: name;
  }
  #filesTable tbody td:nth-child(2) {
    grid-area: size;
    color: var(--muted);
    font-size: 0.88rem;
  }
  #filesTable tbody td:nth-child(3) {
    grid-area: mtime;
    color: var(--muted);
    font-size: 0.88rem;
  }
  #filesTable tbody td:nth-child(4) {
    grid-area: actions;
    justify-self: end;
  }
}