:root {
  --bg: #f6f7f9; --card: #fff; --text: #1a1d21; --muted: #667085; --line: #dfe3e8;
  --accent: #1f6feb; --accent-text: #fff; --danger: #c62828; --ok: #2e7d32;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a; --card: #1d2026; --text: #e6e8eb; --muted: #98a2b3; --line: #2e333b;
    --accent: #4c8dff; --accent-text: #0b1220; --danger: #ef6a6a; --ok: #66bb6a;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif; }
main { max-width: 860px; margin: 0 auto; padding: 16px; }
header { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
header h1 { margin: 0; font-size: 1.4rem; }
header .muted { flex: 1; }
h2 { font-size: 1rem; margin: 24px 0 8px; display: flex; gap: 12px; align-items: baseline; }
.muted { color: var(--muted); font-size: .875rem; }
.err { color: var(--danger); min-height: 1.4em; margin: 8px 0 0; }
button, .pick { font: inherit; cursor: pointer; }
button { background: var(--accent); color: var(--accent-text); border: 0; border-radius: 8px; padding: 10px 16px; }
button.link, .pick { background: none; color: var(--accent); padding: 0; border-radius: 0; text-decoration: underline; }
button.danger { background: none; color: var(--danger); padding: 4px 8px; }
#login { max-width: 360px; margin: 48px auto; background: var(--card); border: 1px solid var(--line);
  border-radius: 12px; padding: 20px; }
#login input { display: block; width: 100%; margin: 6px 0 14px; padding: 10px; font: inherit;
  background: var(--bg); color: var(--text); border: 1px solid var(--line); border-radius: 8px; }
#drop { margin-top: 16px; border: 2px dashed var(--line); border-radius: 12px; padding: 28px 16px;
  text-align: center; background: var(--card); }
#drop p { margin: 4px 0; }
#drop.over { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, var(--card)); }
#uploads { list-style: none; margin: 12px 0 0; padding: 0; }
#uploads li { background: var(--card); border: 1px solid var(--line); border-radius: 8px;
  padding: 8px 12px; margin-bottom: 8px; }
#uploads .row { display: flex; justify-content: space-between; gap: 12px; font-size: .9rem; }
#uploads .name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
progress { width: 100%; height: 8px; margin-top: 6px; accent-color: var(--accent); }
.fail { color: var(--danger); } .done { color: var(--ok); }
table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line);
  border-radius: 8px; overflow: hidden; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); }
th { font-size: .8rem; color: var(--muted); font-weight: 600; }
tr:last-child td { border-bottom: 0; }
td.name { word-break: break-all; }
.num { text-align: right; white-space: nowrap; }
td:last-child { text-align: right; white-space: nowrap; }
a { color: var(--accent); }
#search { display: block; width: 100%; margin: 0 0 10px; padding: 10px; font: inherit;
  background: var(--card); color: var(--text); border: 1px solid var(--line); border-radius: 8px; }
button.sort { background: none; color: inherit; padding: 0; border-radius: 0; font: inherit;
  font-weight: 600; font-size: .8rem; }
button.sort:hover { color: var(--text); }
th[aria-sort="ascending"] button::after { content: " \25B2"; }
th[aria-sort="descending"] button::after { content: " \25BC"; }
th.num { text-align: right; }
@media (max-width: 560px) {
  th:nth-child(3), td:nth-child(3) { display: none; }
}
/* The real file input sits invisibly over its text, so a tap lands on the input itself.
   (A display:none input triggered through a label stopped delivering selections on recent iOS Safari.) */
.pick { position: relative; display: inline-block; overflow: hidden; padding: 6px 4px; }
.pick input { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; font-size: 100px; }
.note { margin: 12px 0 0; padding: 10px 12px; border-radius: 8px; font-size: .9rem;
  background: color-mix(in srgb, var(--accent) 12%, var(--card)); border: 1px solid var(--line); }
.note.warn { background: color-mix(in srgb, var(--danger) 12%, var(--card)); }
.bar { display: flex; align-items: baseline; gap: 14px; margin: 24px 0 8px; flex-wrap: wrap; }
#crumbs { flex: 1; min-width: 0; word-break: break-all; }
a.folder { font-weight: 600; text-decoration: none; }
td .muted { margin-top: 2px; }
td:last-child button { margin-left: 10px; }
dialog { background: var(--card); color: var(--text); border: 1px solid var(--line); border-radius: 12px;
  padding: 18px; width: min(92vw, 420px); }
dialog::backdrop { background: rgba(0, 0, 0, .5); }
dialog select { width: 100%; font: inherit; background: var(--bg); color: var(--text);
  border: 1px solid var(--line); border-radius: 8px; padding: 6px; }
#askMsg { margin: 0 0 12px; white-space: pre-line; word-break: break-word; }
#askInput { display: block; width: 100%; padding: 10px; font: inherit; background: var(--bg); color: var(--text);
  border: 1px solid var(--line); border-radius: 8px; }
#askOk.danger { background: var(--danger); color: #fff; }
dialog menu { display: flex; justify-content: flex-end; align-items: center; gap: 16px; padding: 0; margin: 14px 0 0; }
/* Phone layout: name + size on one line, Rename/Move/Delete on their own line beneath. */
@media (max-width: 560px) {
  table, thead, tbody { display: block; }
  thead tr, tbody tr { display: grid; grid-template-columns: 1fr auto; align-items: baseline; }
  tbody tr { border-bottom: 1px solid var(--line); padding-bottom: 6px; }
  th, td { border-bottom: 0; }
  th:nth-child(4) { display: none; }
  td.name { word-break: break-word; padding-bottom: 4px; }
  td:last-child { grid-column: 1 / -1; text-align: left; padding-top: 0; }
  td:last-child button { margin: 0 18px 0 0; padding: 6px 0; }
}