:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --fg: #1a1a1a;
  --muted: #6b7280;
  --accent: #2563eb;
  --border: #e5e7eb;
  --error: #dc2626;
  --ok: #059669;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115; --card: #171a21; --fg: #e6e7ea; --muted: #9aa0aa;
    --accent: #3b82f6; --border: #2a2e37;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
}
header { padding: 16px 24px; border-bottom: 1px solid var(--border); }
header h1 { margin: 0; font-size: 1.25rem; }
main { max-width: 40rem; margin: 24px auto; padding: 0 16px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}
.card h2 { margin: 0 0 .25rem; font-size: 1.1rem; }
.muted { color: var(--muted); margin: .25rem 0 1rem; font-size: .9rem; }

input, select, textarea, button {
  font: inherit;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--fg);
  padding: .55rem .7rem;
}
textarea { width: 100%; resize: vertical; font-family: ui-monospace, monospace; font-size: .9rem; }

.drop {
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  text-align: center;
  color: var(--muted);
  margin-bottom: .75rem;
  cursor: pointer;
}
.drop.dragover { border-color: var(--accent); color: var(--accent); }

.row { display: flex; gap: 12px; margin: 12px 0; flex-wrap: wrap; }
.row label { display: flex; flex-direction: column; gap: .3rem; font-size: .85rem; color: var(--muted); flex: 1; min-width: 9rem; }
.row input, .row select { color: var(--fg); }

button {
  cursor: pointer;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: 0;
}
button:hover { filter: brightness(1.05); }

.error { color: var(--error); font-size: .9rem; }
.result { margin-top: 1rem; border-top: 1px solid var(--border); padding-top: 1rem; }
.result label { font-size: .85rem; color: var(--muted); }
.link-row { display: flex; gap: 8px; margin-top: .3rem; }
.link-row input { flex: 1; font-family: ui-monospace, monospace; font-size: .85rem; }
#auth input, #auth button { display: block; width: 100%; margin-top: .5rem; }
#manage { margin-top: 16px; }
.share-list { list-style: none; margin: 0; padding: 0; }
.share-item {
  display: flex; align-items: center; gap: 10px;
  padding: .6rem 0; border-bottom: 1px solid var(--border);
}
.share-item:last-child { border-bottom: 0; }
.share-item .meta { flex: 1; min-width: 0; }
.share-item .slug { font-family: ui-monospace, monospace; font-weight: 600; }
.share-item .sub { color: var(--muted); font-size: .82rem; }
.share-item .tag {
  font-size: .72rem; padding: .1rem .4rem; border-radius: 6px;
  border: 1px solid var(--border); color: var(--muted);
}
.share-item .expired { color: var(--error); border-color: var(--error); }
.share-item button {
  background: transparent; color: var(--error); border: 1px solid var(--border);
  font-weight: 500; padding: .35rem .6rem;
}
.share-item button:hover { border-color: var(--error); filter: none; }
.btn-secondary { background: transparent !important; color: var(--accent) !important; border: 1px solid var(--border) !important; }