:root {
  --bg: #f4f5f7; --card: #fff; --text: #1d2330; --muted: #6b7280; --line: #e3e6eb;
  --accent: #2a7de1; --accent-text: #fff; --ok: #1f9d55; --warn: #c27c0e; --err: #d64545;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171c; --card: #1e2229; --text: #e8eaed; --muted: #9aa1ab; --line: #2e333c;
    --accent: #4a92ec; --ok: #3cc47c; --warn: #e0a43a; --err: #f06767;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); text-decoration: none; }
h1 { font-size: 20px; margin: 0 0 4px; word-break: break-word; }
.wrap { max-width: 760px; margin: 0 auto; padding: 16px; }
.top { display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 12px 16px; background: var(--card); border-bottom: 1px solid var(--line); }
.brand { font-weight: 600; color: var(--text); }
.who { color: var(--muted); font-size: 14px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.muted { color: var(--muted); } .small { font-size: 13px; } .center { text-align: center; }
.btn { border: 1px solid var(--line); background: var(--card); color: var(--text); border-radius: 8px;
  padding: 9px 14px; font: inherit; cursor: pointer; white-space: nowrap; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
.btn.danger { color: var(--err); }
.btn.ghost { border: none; background: none; color: var(--muted); padding: 6px 10px; }
.btn.big { width: 100%; padding: 14px; font-size: 16px; }
.btn:disabled { opacity: .5; cursor: default; }
input { font: inherit; padding: 9px 12px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--bg); color: var(--text); width: 100%; }

.login { max-width: 360px; margin: 10vh auto 0; display: flex; flex-direction: column; gap: 12px; }
.login label { display: flex; flex-direction: column; gap: 4px; font-size: 14px; color: var(--muted); }
.alert { background: color-mix(in srgb, var(--err) 12%, transparent); color: var(--err); padding: 8px 12px; border-radius: 8px; }

.new-folder { display: flex; gap: 8px; margin-bottom: 16px; }
@media (max-width: 560px) { .new-folder { flex-direction: column; } }

.list { display: flex; flex-direction: column; gap: 8px; margin: 12px 0; }
.row { display: flex; align-items: center; gap: 12px; color: var(--text); }
a.row:hover { border-color: var(--accent); }
.row-main { flex: 1; min-width: 0; }
.row-title { font-weight: 500; display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text); }
a.row-title:hover { color: var(--accent); }
.icon { font-size: 22px; }
.badge { font-size: 12px; padding: 3px 9px; border-radius: 99px; white-space: nowrap;
  background: color-mix(in srgb, var(--muted) 15%, transparent); color: var(--muted); }
.badge.sent { background: color-mix(in srgb, var(--ok) 15%, transparent); color: var(--ok); }
.badge.sending { background: color-mix(in srgb, var(--warn) 15%, transparent); color: var(--warn); }
.badge.error { background: color-mix(in srgb, var(--err) 15%, transparent); color: var(--err); }

.back { display: inline-block; margin-bottom: 10px; font-size: 14px; }
.folder-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.actions { position: relative; }
.actions summary { list-style: none; cursor: pointer; font-size: 20px; padding: 0 8px; color: var(--muted); }
.actions summary::-webkit-details-marker { display: none; }
.actions[open] > form { display: flex; gap: 8px; margin-top: 8px; }
.actions[open] { position: absolute; right: 16px; background: var(--card); border: 1px solid var(--line);
  border-radius: 10px; padding: 8px; z-index: 5; width: min(420px, calc(100vw - 32px)); }
.actions[open] summary { text-align: right; }

.status:empty { display: none; }
.status { margin-top: 12px; padding: 10px 14px; border-radius: 10px; }
.status.sending { background: color-mix(in srgb, var(--warn) 14%, transparent); }
.status.sent { background: color-mix(in srgb, var(--ok) 14%, transparent); }
.status.error { background: color-mix(in srgb, var(--err) 14%, transparent); }

.drop { display: block; margin-top: 12px; border: 2px dashed var(--line); border-radius: 12px; padding: 28px 16px;
  text-align: center; cursor: pointer; background: var(--card); transition: border-color .15s, background .15s; }
.drop:hover, .drop.over { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 6%, var(--card)); }
.drop-title { font-weight: 600; margin-bottom: 4px; }
#queue { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.bar { height: 6px; background: var(--line); border-radius: 3px; overflow: hidden; margin: 6px 0 2px; }
.bar i { display: block; height: 100%; width: 0; background: var(--accent); transition: width .2s; }
.file.failed { border-color: var(--err); }

.send-bar { position: sticky; bottom: 0; padding: 12px 0 16px; background: linear-gradient(transparent, var(--bg) 30%); }