:root {
  --bg: #f6f7f9; --card: #fff; --text: #1a1d21; --muted: #6b7280;
  --border: #e5e7eb; --accent: #2563eb; --accent-fg: #fff;
  --danger: #dc2626; --ok: #16a34a; --bar: #e5e7eb;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115; --card: #171a20; --text: #e6e8eb; --muted: #9aa3af;
    --border: #262a31; --accent: #3b82f6; --bar: #262a31;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0; font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg); color: var(--text);
}
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px; border-bottom: 1px solid var(--border); background: var(--card);
}
.brand { font-weight: 700; font-size: 17px; }
.account { display: flex; align-items: center; gap: 12px; }
.email { color: var(--muted); font-size: 14px; }
main { max-width: 880px; margin: 0 auto; padding: 24px 20px; }
.center { min-height: 70vh; display: flex; align-items: center; justify-content: center; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; margin-bottom: 20px; }
.signin-card { text-align: center; max-width: 360px; }
.signin-card h1 { margin: 0 0 6px; font-size: 22px; }
.muted { color: var(--muted); }
.error { color: var(--danger); }
#gbtn { display: flex; justify-content: center; margin-top: 16px; }
.btn {
  display: inline-flex; align-items: center; gap: 6px; cursor: pointer;
  background: var(--accent); color: var(--accent-fg); border: none; border-radius: 8px;
  padding: 9px 14px; font-size: 14px; font-weight: 600;
}
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn:hover { filter: brightness(1.05); }
.usage-row { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.pill { background: var(--accent); color: var(--accent-fg); border-radius: 999px; padding: 2px 10px; font-size: 12px; font-weight: 700; text-transform: uppercase; }
.bar { height: 8px; background: var(--bar); border-radius: 999px; overflow: hidden; }
.bar-fill { height: 100%; width: 0; background: var(--accent); transition: width .3s; }
.dropzone {
  border: 2px dashed var(--border); border-radius: 12px; padding: 28px; text-align: center;
  margin-bottom: 20px; transition: border-color .2s, background .2s;
}
.dropzone.drag { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, transparent); }
.dropzone .btn { margin: 6px 4px 0; }
.uploads:empty { display: none; }
.upload-item { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 10px 14px; margin-bottom: 8px; }
.upload-item .u-top { display: flex; justify-content: space-between; font-size: 13px; }
.upload-item .bar { margin-top: 6px; }
.u-status { color: var(--muted); }
.u-status.ok { color: var(--ok); }
.u-status.err { color: var(--danger); }
.list-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; gap: 12px; flex-wrap: wrap; }
.list-head h2 { margin: 0; font-size: 16px; }
.head-actions { display: flex; align-items: center; gap: 10px; }
.breadcrumb { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; font-size: 15px; min-height: 28px; }
.breadcrumb .crumb { color: var(--accent); cursor: pointer; }
.breadcrumb .crumb:hover { text-decoration: underline; }
.breadcrumb .sep { color: var(--muted); }
.breadcrumb .current { color: var(--text); font-weight: 600; }
.viewtoggle { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.vbtn { background: transparent; color: var(--muted); border: none; padding: 6px 11px; cursor: pointer; font-size: 15px; }
.vbtn.active { background: var(--accent); color: var(--accent-fg); }
.folder-row { cursor: pointer; }
.folder-row:hover { background: color-mix(in srgb, var(--accent) 7%, transparent); }
/* grid view */
#browser.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 16px; }
.tile { border: 1px solid var(--border); border-radius: 10px; overflow: hidden; background: var(--card); display: flex; flex-direction: column; }
.tile.folder, .tile .cover { cursor: pointer; }
.tile:hover { border-color: var(--accent); }
.cover { aspect-ratio: 3 / 4; display: flex; align-items: center; justify-content: center; font-size: 40px; color: #fff; }
.cover.folder { background: color-mix(in srgb, var(--accent) 22%, var(--card)); color: var(--accent); }
.tile .meta { padding: 8px 10px; }
.tile .t-name { font-size: 13px; font-weight: 600; word-break: break-word; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.tile .t-sub { font-size: 12px; color: var(--muted); margin-top: 2px; }
.tile .t-actions { display: flex; gap: 10px; padding: 0 10px 10px; }
table.files { width: 100%; border-collapse: collapse; }
.files th, .files td { text-align: left; padding: 9px 6px; border-bottom: 1px solid var(--border); font-size: 14px; }
.files th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }
.files td.num, .files th.num { text-align: right; white-space: nowrap; }
.files .name { word-break: break-word; }
.row-actions { display: flex; gap: 8px; justify-content: flex-end; }
.link { background: none; border: none; color: var(--accent); cursor: pointer; font-size: 14px; padding: 0; }
.link.danger { color: var(--danger); }
.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 8px; font-size: 14px; z-index: 50;
}