:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --bg: #f5f7fb;
  --card-bg: #ffffff;
  --surface-alt: #f8fafc;
  --surface-alt-hover: #eef2f7;
  --track-bg: #e2e8f0;
  --border: #e2e8f0;
  --text: #1e293b;
  --muted: #64748b;
  --danger: #dc2626;
  --danger-bg: #fee2e2;
  --danger-text: #991b1b;
  --success: #16a34a;
  --success-bg: #dcfce7;
  --success-text: #166534;
  --info-bg: #dbeafe;
  --info-text: #1e40af;
  --radius: 10px;
}

[data-theme="dark"] {
  --primary: #3b82f6;
  --primary-dark: #60a5fa;
  --bg: #0f172a;
  --card-bg: #1e293b;
  --surface-alt: #253449;
  --surface-alt-hover: #2d3f58;
  --track-bg: #334155;
  --border: #334155;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --danger: #f87171;
  --danger-bg: #4c1d1d;
  --danger-text: #fca5a5;
  --success: #4ade80;
  --success-bg: #14321f;
  --success-text: #86efac;
  --info-bg: #1e3a5f;
  --info-text: #93c5fd;
}

body { transition: background-color 0.15s ease, color 0.15s ease; }

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
}
.nav { display: flex; align-items: center; gap: 18px; }
.nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.nav a:hover { color: var(--primary); }
.nav-user { font-weight: 600; }

.container { max-width: 1000px; margin: 0 auto; padding: 28px 20px 60px; }

.auth-card {
  max-width: 420px;
  margin: 40px auto;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}
.auth-card h1 { margin-top: 0; font-size: 1.4rem; }

form label {
  display: block;
  margin-bottom: 14px;
  font-size: 0.9rem;
  color: var(--muted);
}
form input[type=text], form input[type=email], form input[type=password], form select {
  display: block;
  width: 100%;
  padding: 9px 12px;
  margin-top: 5px;
  border: 1px solid var(--border);
  border-radius: 7px;
  font-size: 0.95rem;
}

.btn {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 9px 18px;
  border-radius: 7px;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
.btn:hover { background: var(--primary-dark); }
.btn-secondary { background: #64748b; }
.btn-secondary:hover { background: #475569; }

.btn-link {
  background: none;
  border: none;
  color: var(--primary);
  cursor: pointer;
  padding: 0;
  font-size: 0.9rem;
  text-decoration: underline;
}
.btn-link.danger { color: var(--danger); }

.flash {
  padding: 10px 14px;
  border-radius: 7px;
  margin-bottom: 16px;
  font-size: 0.92rem;
}
.flash-success { background: var(--success-bg); color: var(--success-text); }
.flash-error { background: var(--danger-bg); color: var(--danger-text); }
.flash-info { background: var(--info-bg); color: var(--info-text); }

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}
.breadcrumbs a { color: var(--muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--primary); }
.toolbar-actions { display: flex; gap: 10px; }

.inline-form {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 16px;
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}
.inline-form.hidden { display: none; }
.inline-form input[type=text], .inline-form input[type=file] { padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; }
.upload-panel {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 16px;
}
.upload-panel.hidden { display: none; }

.upload-dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 24px 16px;
  text-align: center;
  color: var(--muted);
}
.upload-dropzone.dragover {
  border-color: var(--primary);
  background: var(--info-bg);
  color: var(--info-text);
}
.upload-dropzone p { margin: 4px 0; }
.upload-dropzone .btn-secondary { margin: 4px 6px; }
.hidden-file-input { display: none; }
.upload-folder-note { margin: 12px 0 0; font-size: 0.82rem; }

.bulk-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: var(--info-bg);
  color: var(--info-text);
  border-radius: var(--radius);
  padding: 10px 14px;
  margin-bottom: 12px;
  font-size: 0.9rem;
}
.bulk-bar.hidden { display: none; }
.bulk-bar-actions { display: flex; align-items: center; gap: 14px; }
.th-select-all {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-weight: inherit;
}
.bulk-checkbox {
  margin-right: 6px;
  vertical-align: middle;
}

.file-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.file-table th, .file-table td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 0.92rem;
}
.file-table th { background: var(--surface-alt); color: var(--muted); font-weight: 600; }
.file-table tr:last-child td { border-bottom: none; }
.file-table a { color: var(--primary); text-decoration: none; }
.file-table a:hover { text-decoration: underline; }
.row-actions { display: flex; gap: 6px; align-items: center; white-space: nowrap; }

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: var(--surface-alt);
  color: var(--text);
  text-decoration: none;
  font-size: 1rem;
  cursor: pointer;
  line-height: 1;
}
.icon-btn:hover { background: var(--surface-alt-hover); }
.icon-btn.danger { color: var(--danger); }
.icon-btn.danger:hover { background: var(--danger-bg); }

.share-link-input { width: 100%; padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; }

.upload-progress-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  width: 100%;
  margin-top: 4px;
}
.upload-progress-wrap.hidden { display: none; }
.upload-progress-file {
  flex-basis: 100%;
  font-size: 0.85rem;
  color: var(--muted);
}
.upload-progress-track {
  flex: 1;
  height: 10px;
  background: var(--track-bg);
  border-radius: 999px;
  overflow: hidden;
}
.upload-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--primary);
  transition: width 0.15s ease;
}
.upload-progress-label {
  font-size: 0.85rem;
  color: var(--muted);
  min-width: 40px;
  text-align: right;
}
.upload-progress-speed {
  font-size: 0.8rem;
  color: var(--muted);
  min-width: 90px;
  text-align: right;
}
.upload-progress-wrap #uploadCancelBtn {
  font-size: 0.85rem;
  white-space: nowrap;
}

.storage-indicator {
  font-size: 0.9rem;
  color: var(--text);
  margin-bottom: 16px;
}
.storage-bar-track {
  height: 8px;
  background: var(--track-bg);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 6px;
  max-width: 320px;
}
.storage-bar-fill {
  height: 100%;
  background: var(--primary);
}
.storage-bar-fill.storage-bar-full { background: var(--danger); }

.settings-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.badge-ok { color: var(--success); font-weight: 600; }
.shared-badge { font-size: 0.85rem; opacity: 0.8; margin-left: 2px; }
.badge-off { color: var(--danger); font-weight: 600; }

.view-toggle { display: inline-flex; gap: 4px; margin-left: 4px; }
.view-toggle-btn { opacity: 0.55; }
.view-toggle-btn.active { opacity: 1; background: var(--primary); color: #fff; border-color: var(--primary); }

.item-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: inherit;
  vertical-align: middle;
}
a.item-link:hover .item-name { text-decoration: underline; }
.item-thumb {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 4px;
  overflow: hidden;
  flex-shrink: 0;
  font-size: 1rem;
  background: var(--surface-alt);
}
.item-thumb img, .item-thumb video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.item-name { word-break: break-word; }
.item-path {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 2px;
}
.item-path a { color: var(--muted); text-decoration: none; }
.item-path a:hover { text-decoration: underline; }

.search-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}
.search-bar input[type=text] {
  flex: 1;
  max-width: 400px;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 7px;
  font-size: 0.95rem;
  background: var(--card-bg);
  color: var(--text);
}

.quota-cell { display: flex; flex-direction: column; gap: 4px; }
.quota-form { display: flex; gap: 6px; align-items: center; }
.quota-form input[type=number] {
  width: 70px;
  padding: 4px 6px;
  border: 1px solid var(--border);
  border-radius: 5px;
  font-size: 0.85rem;
}

.muted { color: var(--muted); }

.media-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.media-modal.hidden { display: none; }
.media-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
}
.media-modal-content {
  position: relative;
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 18px;
  max-width: 90vw;
  max-height: 90vh;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.media-modal-title {
  font-weight: 600;
  padding-right: 28px;
  word-break: break-word;
  color: var(--text);
}
.media-modal-close {
  position: absolute;
  top: 10px;
  right: 12px;
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--muted);
  line-height: 1;
}
.media-modal-close:hover { color: var(--text); }

.duplicate-modal-content { max-width: 420px; }
.duplicate-modal-text { color: var(--muted); font-size: 0.92rem; word-break: break-word; }
.duplicate-modal-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.duplicate-modal-actions .btn,
.duplicate-modal-actions .btn-secondary { width: 100%; }
#mediaModalPlayer video,
#mediaModalPlayer audio,
#mediaModalPlayer img {
  display: block;
  max-width: 80vw;
  max-height: 70vh;
  width: 100%;
  border-radius: 8px;
  background: #000;
}
#mediaModalPlayer audio { max-width: 400px; }
#mediaModalPlayer img { width: auto; background: none; object-fit: contain; }

.site-footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 20px;
}

/* ------------------------------------------------------------------ */
/* Mobile                                                              */
/* ------------------------------------------------------------------ */
@media (max-width: 640px) {
  .topbar-inner { padding: 12px 14px; flex-wrap: wrap; gap: 8px; }
  .nav { gap: 12px; flex-wrap: wrap; width: 100%; justify-content: flex-start; }
  .nav-user { order: 3; }

  .container { padding: 16px 12px 50px; }

  .auth-card { margin: 16px auto; padding: 22px; max-width: 100%; }

  .toolbar { flex-direction: column; align-items: stretch; }
  .toolbar-actions { display: flex; gap: 8px; }
  .toolbar-actions .btn, .toolbar-actions .btn-secondary { flex: 1; text-align: center; }

  .inline-form { flex-direction: column; align-items: stretch; }
  .inline-form input[type=text], .inline-form input[type=file], .inline-form select { width: 100%; }

  .search-bar input[type=text] { max-width: none; }

  /* Buttons/links get bigger tap targets on touch screens */
  .btn, .btn-secondary { padding: 12px 18px; width: 100%; }
  .btn-link { padding: 6px 0; display: inline-block; }

  /* Tables become stacked cards instead of horizontally-scrolling strips:
     each row becomes a bordered block, each cell drops to its own line
     with a label (from data-label) on the left and the value on the
     right, wrapping instead of overflowing sideways. This is the
     default for any .file-table (admin users list, share-links list). */
  .file-table-wrap { overflow-x: visible; }
  .file-table { min-width: 0; width: 100%; }
  .file-table thead { display: none; }
  .file-table, .file-table tbody, .file-table tr, .file-table td { display: block; width: 100%; }
  .file-table tr {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 10px;
    padding: 4px 12px;
    background: var(--card-bg);
  }
  .file-table td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
    text-align: right;
  }
  .file-table td:last-child { border-bottom: none; }
  .file-table td[data-label]::before {
    content: attr(data-label);
    font-weight: 600;
    color: var(--muted);
    text-align: left;
    flex-shrink: 0;
  }
  .file-table td[data-label=""]::before { content: none; }
  .file-table td[colspan] {
    display: block;
    text-align: left;
    border-bottom: none;
  }
  .file-table .row-actions {
    justify-content: flex-end;
  }
  .quota-cell { align-items: flex-end; }

  .row-actions { flex-wrap: wrap; gap: 6px; }

  /* Smaller, less dominant icon buttons on touch screens */
  .icon-btn { width: 26px; height: 26px; font-size: 0.85rem; border-radius: 6px; }

  /* File/folder browser tables (dashboard, shared-folder view) only:
     name gets its own full-width line; size + date share one line
     side by side instead of each stacking on its own row; actions
     get their own line at the bottom. */
  .browse-table tr { display: flex; flex-wrap: wrap; }
  .browse-table td { display: flex; }
  .browse-table td:nth-child(1) { flex: 1 1 100%; }
  .browse-table td:nth-child(2),
  .browse-table td:nth-child(3) { flex: 1 1 50%; }
  .browse-table td:nth-child(3) { justify-content: flex-end; }
  .browse-table td:nth-child(4) { flex: 1 1 100%; border-bottom: none; }
  .browse-table td[colspan] { flex: 1 1 100%; }

  .media-modal-content { max-width: 95vw; padding: 14px; }
  #mediaModalPlayer video,
  #mediaModalPlayer audio,
  #mediaModalPlayer img { max-width: 90vw; max-height: 60vh; }
}

/* ------------------------------------------------------------------ */
/* Grid / gallery view (toggle button in the toolbar)                  */
/* Reuses the exact same table markup as list view - only the CSS      */
/* layout changes, so bulk-select, actions, and data all stay in sync. */
/* !important is used on structural properties here because this rule  */
/* must always win over the mobile list-view stacking rules above,     */
/* regardless of viewport width or rule order. */
/* ------------------------------------------------------------------ */
.browse-table.grid-mode thead { display: none !important; }
.browse-table.grid-mode,
.browse-table.grid-mode tbody { display: block !important; width: 100% !important; }
.browse-table.grid-mode tbody {
  display: grid !important;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 14px;
}
.browse-table.grid-mode tr {
  position: relative;
  display: flex !important;
  flex-direction: column !important;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
  background: var(--card-bg);
  margin-bottom: 0 !important;
}
.browse-table.grid-mode td {
  display: block !important;
  border-bottom: none !important;
  padding: 2px 0 !important;
  text-align: left !important;
  width: 100% !important;
  flex: none !important;
}
.browse-table.grid-mode td[data-label]::before { content: none !important; }
.browse-table.grid-mode td:nth-child(1) { order: 1; }
.browse-table.grid-mode td:nth-child(2),
.browse-table.grid-mode td:nth-child(3) {
  order: 2;
  font-size: 0.76rem;
  color: var(--muted);
  line-height: 1.4;
}
.browse-table.grid-mode td:nth-child(4) { order: 4; margin-top: 8px; }
.browse-table.grid-mode td[colspan] { order: 1; }

.browse-table.grid-mode .item-link {
  display: flex !important;
  flex-direction: column !important;
  align-items: stretch;
  gap: 6px;
  width: 100%;
}
.browse-table.grid-mode .item-thumb {
  width: 100% !important;
  height: 100px !important;
  border-radius: 8px;
  font-size: 2.6rem;
}
.browse-table.grid-mode .item-name {
  font-size: 0.83rem;
  text-align: center;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.browse-table.grid-mode .row-actions { justify-content: center; flex-wrap: wrap; }
.browse-table.grid-mode td:nth-child(1) .bulk-checkbox {
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 1;
}
.browse-table.grid-mode .shared-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  background: var(--card-bg);
  border-radius: 50%;
  padding: 2px 5px;
  z-index: 1;
}

@media (max-width: 640px) {
  .browse-table.grid-mode tbody { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 10px; }
  .browse-table.grid-mode .item-thumb { height: 80px !important; font-size: 2rem; }
}