:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1c1f24;
  --muted: #667085;
  --line: #e3e6ea;
  --accent: #2f6fed;
  --accent-text: #ffffff;
  --danger: #c4372b;
  --ok: #18794e;
  --drop: #f0f5ff;
  --radius: 12px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317;
    --card: #1b1e24;
    --text: #e8eaed;
    --muted: #9aa1ab;
    --line: #2c3038;
    --accent: #5b8ff9;
    --accent-text: #0b0d10;
    --danger: #f2756b;
    --ok: #4cc38a;
    --drop: #1c2433;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.wrap { max-width: 760px; margin: 0 auto; padding: 24px 16px 64px; }
.wrap.wide { max-width: 1180px; }

.top { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.top .spacer { flex: 1; }
.brand { font-weight: 700; font-size: 18px; letter-spacing: -0.01em; }

h1 { font-size: 22px; margin: 0 0 8px; }
h2 { font-size: 17px; margin: 0 0 14px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 18px;
}
.card.center { text-align: center; padding: 36px 20px; }
.card.narrow { max-width: 380px; margin-left: auto; margin-right: auto; }

.muted { color: var(--muted); }
.small { font-size: 13px; }
.error { color: var(--danger); min-height: 1.5em; margin: 8px 0 0; }
.ok { color: var(--ok); }
[hidden] { display: none !important; }

button, .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font: inherit;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}
button:hover, .button:hover { border-color: var(--muted); }
button.primary, .button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
button.ghost { background: transparent; }
button.danger { color: var(--danger); }
button.small { padding: 4px 10px; font-size: 13px; }
button:disabled { opacity: 0.5; cursor: default; }

input, select {
  font: inherit;
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
}
label { display: block; font-weight: 600; margin-bottom: 12px; }
label input { display: block; width: 100%; margin-top: 6px; font-weight: 400; }

.row { display: flex; align-items: center; gap: 10px; margin-top: 16px; flex-wrap: wrap; }
.row.first { margin: 0 0 14px; }
.row label { margin: 0; }
.drop button { margin: 4px 0; }
#notice:empty { display: none; }

form.inline { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 14px; }
form.inline input { flex: 1 1 180px; }
form.inline input[type="number"]#maxUsers { flex: 0 0 90px; }
.inline-label { margin: 0; }

.drop {
  border: 2px dashed var(--line);
  border-radius: var(--radius);
  background: var(--drop);
  padding: 34px 16px;
  text-align: center;
  transition: border-color 0.15s;
}
.drop.over { border-color: var(--accent); }
.drop p { margin: 4px 0; }
.link { color: var(--accent); cursor: pointer; text-decoration: underline; font-weight: 600; }

.list { list-style: none; margin: 14px 0 0; padding: 0; }
.item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}
.item:first-child { border-top: 0; }
.item .grow { flex: 1; min-width: 0; }
.item .name { font-weight: 600; overflow-wrap: anywhere; }
.actions { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }

.progress { height: 6px; background: var(--line); border-radius: 3px; overflow: hidden; margin: 8px 0 4px; }
.progress > div { height: 100%; width: 0; background: var(--accent); transition: width 0.3s; }

.linkbox { display: flex; gap: 6px; margin-top: 8px; }
.linkbox input { flex: 1; min-width: 0; font-size: 13px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

.qr { display: block; margin-top: 10px; image-rendering: pixelated; background: #fff; padding: 6px; border-radius: 6px; }

.notice {
  border: 1px solid var(--accent);
  background: var(--drop);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 16px;
}

.download .filename { font-size: 24px; overflow-wrap: anywhere; margin: 10px 0 6px; }
.download .meta { color: var(--muted); margin-bottom: 22px; }
.download .button { font-size: 17px; padding: 12px 28px; }

.scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font-weight: 600; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em; }
th, td { padding: 9px 8px; border-top: 1px solid var(--line); vertical-align: top; }
thead th { border-top: 0; }
td.name { font-weight: 600; overflow-wrap: anywhere; min-width: 160px; }
td.num { text-align: right; white-space: nowrap; }
td.actions-cell { text-align: right; white-space: nowrap; }
td.actions-cell button { margin-left: 4px; }
.badge { display: inline-block; font-size: 12px; font-weight: 600; padding: 1px 8px; border-radius: 99px; border: 1px solid var(--line); }
.badge.ok { color: var(--ok); border-color: var(--ok); }
.badge.off { color: var(--danger); border-color: var(--danger); }