/* Minimal clean CSS. No JS frameworks, no dependencies. */
:root {
  --bg: #f7f8fa;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --primary: #2563eb;
  --danger: #dc2626;
  --success: #059669;
  --warning: #d97706;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}
.container { max-width: 960px; margin: 0 auto; padding: 0 16px; }
header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
header .container { display: flex; align-items: center; justify-content: space-between; }
header h1 { margin: 0; font-size: 20px; }
header h1 a { color: var(--text); text-decoration: none; }
header nav { display: flex; gap: 16px; align-items: center; }
header nav a { color: var(--primary); text-decoration: none; }
header nav a:hover { text-decoration: underline; }
.user { color: var(--muted); }
.badge {
  display: inline-block;
  padding: 1px 6px;
  background: #eef2ff;
  color: var(--primary);
  border-radius: 3px;
  font-size: 11px;
  font-weight: 600;
}
main { padding: 24px 0 40px; min-height: 60vh; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 20px;
  margin-bottom: 16px;
}
.card.narrow { max-width: 420px; margin-left: auto; margin-right: auto; }
.card h2 { margin-top: 0; font-size: 18px; }
label {
  display: block;
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 13px;
}
label input:not([type=checkbox]), label select {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 14px;
}
label.checkbox { color: var(--text); }
label.checkbox input { margin-right: 6px; }
.hint { color: var(--muted); font-size: 12px; }
button, .btn {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: #fff;
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
button:hover, .btn:hover { background: #f3f4f6; }
button.primary, .btn.primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
button.primary:hover { background: #1d4ed8; }
button.danger, .btn.danger {
  color: var(--danger);
  border-color: #fecaca;
}
button.danger:hover { background: #fee2e2; }
.btn.small { padding: 4px 10px; font-size: 12px; }
.link-btn {
  border: none;
  background: none;
  color: var(--primary);
  padding: 0;
  cursor: pointer;
}
.inline { display: inline; }
.alert {
  padding: 10px 14px;
  border-radius: 4px;
  margin-bottom: 12px;
  border: 1px solid;
}
.alert.error { background: #fef2f2; color: var(--danger); border-color: #fecaca; }
.alert.success { background: #ecfdf5; color: var(--success); border-color: #a7f3d0; }
.alert code { background: rgba(0,0,0,0.08); padding: 2px 6px; border-radius: 3px; font-size: 13px; }
table { width: 100%; border-collapse: collapse; }
table th, table td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
table th { font-size: 12px; color: var(--muted); text-transform: uppercase; font-weight: 600; }
td.filename { font-weight: 500; max-width: 280px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
td.size, td.when, td.shares { color: var(--muted); font-size: 13px; }
td.actions { white-space: nowrap; }
.share-url {
  width: 100%;
  font-family: monospace;
  font-size: 12px;
  padding: 4px 6px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: #f9fafb;
}
.disabled-row { opacity: 0.5; }
.empty { color: var(--muted); font-style: italic; }
footer {
  padding: 20px 16px;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}
.text-center { text-align: center; }
.big { font-size: 16px; }