:root {
  --bg: #f4f5f7; --fg: #1d1f23; --muted: #6b7280; --card: #fff;
  --border: #d8dbe0; --accent: #3b5bdb; --error: #c92a2a;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #16181c; --fg: #e6e8eb; --muted: #9aa0a8; --card: #1f2227; --border: #33373e; --accent: #748ffc; --error: #ff8787; }
}
* { box-sizing: border-box; }
/* `hidden` must win over any class that sets display (e.g. .count on the Download tab's "New" badge). */
[hidden] { display: none !important; }
body { margin: 0; background: var(--bg); color: var(--fg); }
.center { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 24px; width: 100%; max-width: 340px; display: grid; gap: 14px; }
.card h1 { font-size: 1.2rem; margin: 0 0 4px; }
label { display: grid; gap: 4px; font-size: .9rem; }
input, select { font: inherit; padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; background: var(--bg); color: var(--fg); }
button { font: inherit; padding: 9px 12px; border: 0; border-radius: 6px; background: var(--accent); color: #fff; cursor: pointer; }
button.link { background: none; color: var(--accent); padding: 0 0 0 12px; }
.error { color: var(--error); margin: 0; font-size: .9rem; }
.muted { color: var(--muted); }
.topbar { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; background: var(--card); border-bottom: 1px solid var(--border); }
.content { max-width: 1440px; margin: 0 auto; padding: 16px; }
/* Long machine IDs (SHA-256 = 64 chars) are cut in tables; full value on hover and via its Copy button. */
code.machine { display: inline-block; max-width: 18ch; overflow: hidden; text-overflow: ellipsis; vertical-align: bottom; }
.badge { font-size: .75rem; font-weight: 600; padding: 2px 8px; margin-left: 6px; border-radius: 999px; background: var(--accent); color: #fff; vertical-align: middle; }
h3 { font-size: 1rem; margin: 0 0 8px; }
.panel h3 { margin: 0; }
.panel { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 16px; margin-bottom: 20px; display: grid; gap: 12px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.seats-edit { display: inline-flex; gap: 6px; align-items: center; }
.seats-edit input { width: 90px; padding: 4px 8px; }
.seats-edit button { padding: 4px 10px; }
.keys-row > td { background: var(--bg); padding: 12px; }
table.licenses { font-size: .9rem; }
code, pre, .mono { font-family: ui-monospace, Consolas, monospace; }
table.licenses code { letter-spacing: .03em; }
table.licenses code.machine { font-size: .8rem; color: var(--muted); }
.key-cell { display: inline-flex; align-items: center; }
.key-cell .link { padding-left: 8px; font-size: .85rem; }
input.nickname { padding: 4px 8px; width: 170px; font-size: .9rem; }
input.saved { border-color: #2f9e44; }
input.error-outline { border-color: var(--error); }
button.danger { color: var(--error); }
.status { font-size: .75rem; font-weight: 600; padding: 2px 8px; border-radius: 999px; }
.status-activated { background: color-mix(in srgb, #2f9e44 18%, transparent); color: #2f9e44; }
.status-not_activated { background: color-mix(in srgb, var(--muted) 18%, transparent); color: var(--muted); }
.stats { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 20px; }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 12px 16px; display: grid; gap: 2px; min-width: 120px; }
.stat-label { font-size: .8rem; color: var(--muted); }
.stat-value { font-size: 1.6rem; font-weight: 600; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 20px; }
.tabs a { padding: 8px 14px; color: var(--muted); text-decoration: none; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs a.active { color: var(--fg); border-bottom-color: var(--accent); font-weight: 600; }
.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; counter-reset: step; }
.step { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 16px; counter-increment: step; }
.step h3::before { content: counter(step) ". "; color: var(--accent); }
.step p { margin: 8px 0; }
.row { display: flex; flex-wrap: wrap; gap: 8px; }
.row input { flex: 1 1 320px; }
.command { display: flex; align-items: flex-start; gap: 8px; background: var(--bg); border: 1px solid var(--border); border-radius: 6px; padding: 10px 12px; }
.command code, .command pre { flex: 1; margin: 0; font-size: .85rem; white-space: pre-wrap; word-break: break-all; }
.command .link { padding: 0; white-space: nowrap; }
.note { background: color-mix(in srgb, var(--accent) 12%, transparent); border-radius: 6px; padding: 8px 12px; font-size: .9rem; }
.note.ok { background: color-mix(in srgb, #2f9e44 15%, transparent); }
button.secondary { background: none; color: var(--fg); border: 1px solid var(--border); }
dialog { border: 1px solid var(--border); border-radius: 8px; background: var(--card); color: var(--fg); padding: 20px; width: min(560px, calc(100vw - 32px)); }
dialog::backdrop { background: rgb(0 0 0 / .45); }
dialog form { display: grid; gap: 12px; }
dialog p { margin: 0; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; }
.history { margin: 0; padding-left: 20px; font-size: .85rem; display: grid; gap: 4px; }
.modes { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; margin-bottom: 16px; }
.mode { display: flex; gap: 10px; align-items: flex-start; background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 12px 14px; cursor: pointer; }
.mode:has(input:checked) { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.mode input { margin-top: 3px; }
.mode span { display: grid; gap: 2px; }
.mode small { color: var(--muted); font-size: .85rem; }
.status-line { font-size: .9rem; }
.status-line.waiting::before { content: ""; display: inline-block; width: 10px; height: 10px; margin-right: 8px; border: 2px solid var(--accent); border-right-color: transparent; border-radius: 50%; animation: spin .8s linear infinite; vertical-align: -1px; }
@keyframes spin { to { transform: rotate(360deg); } }
.small { font-size: .85rem; }
button.link.inline { padding: 0; font-size: inherit; }
button:disabled { opacity: .5; cursor: default; }
.fallback summary { cursor: pointer; font-size: .9rem; color: var(--muted); }
.fallback[open] { display: grid; gap: 8px; }
.progress { height: 8px; border-radius: 999px; background: var(--bg); border: 1px solid var(--border); overflow: hidden; }
.progress .bar { height: 100%; width: 0; background: var(--accent); transition: width .3s; }
.count { display: inline-block; padding: 0 7px; border-radius: 999px; background: #e67700; color: #fff; font-size: .72rem; font-weight: 600; vertical-align: 1px; }
a.button { display: inline-block; padding: 9px 14px; border-radius: 6px; background: var(--accent); color: #fff; text-decoration: none; }
.installer-card { max-width: 640px; }
.installer-head { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.installer-head h3 { margin: 0; }
.version-stamp { font-weight: 700; font-size: 1.05rem; }
.installer-card p { margin: 0; }
.installer-card details summary { cursor: pointer; font-size: .9rem; color: var(--muted); }
.installer-card details[open] { display: grid; gap: 8px; }
a.link { color: var(--accent); text-decoration: none; padding-left: 12px; }
button.danger-fill { background: var(--error); }
.toolbar { align-items: center; margin-bottom: 12px; }
.toolbar input { flex: 1 1 320px; }
.warn { color: #e67700; font-weight: 600; }
.pubkey summary { cursor: pointer; font-weight: 600; }
.pubkey p { margin: 0; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--border); border-radius: 8px; }
th, td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { font-size: .85rem; color: var(--muted); font-weight: 600; }
tbody tr:last-child td { border-bottom: 0; }
select { min-width: 160px; }
.toolbar select { flex: 0 1 200px; }
table.log { font-size: .88rem; }
table.log td { vertical-align: top; }
table.log .details { white-space: normal; display: inline-block; min-width: 220px; max-width: 420px; color: var(--muted); }
.load-more { margin-top: 12px; }
.warn-note { background: color-mix(in srgb, var(--error) 12%, transparent); }
.plain-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
.link.first { padding-left: 0; }
mark.placeholder { background: color-mix(in srgb, #f59f00 35%, transparent); color: inherit; border-radius: 3px; padding: 0 3px; font-weight: 600; }
textarea { font: inherit; padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; background: var(--bg); color: var(--fg); resize: vertical; }
.row textarea { flex: 1 1 420px; word-break: break-all; font-size: .85rem; }