:root {
  --bg: #0b0f14;
  --panel: #121821;
  --panel-2: #18202b;
  --line: #243041;
  --text: #e6edf5;
  --muted: #8b9bb0;
  --accent: #22d3ee;
  --pick: #f97316;
  --ok: #34d399;
  --danger: #f87171;
  --radius: 10px;
  --mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }

.seg { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; padding: 4px; background: var(--bg); border: 1px solid var(--line); border-radius: 9px; margin-bottom: 6px; }
.seg label { position: relative; margin: 0; color: var(--muted); font-size: 12px; cursor: pointer; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span { display: block; text-align: center; padding: 7px 6px; border-radius: 6px; font-weight: 600; transition: background .15s, color .15s; }
.seg label:hover span { color: var(--text); }
.seg input:checked + span { background: var(--panel-2); color: var(--accent); box-shadow: inset 0 0 0 1px var(--line); }
.seg input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 1px; }
.hint { color: var(--muted); font-size: 12px; margin: 0 0 12px; min-height: 18px; }
.toolbar-note { flex: 1; color: var(--muted); font-size: 12px; }
.badge.type-element { color: var(--pick); border-color: #f9731655; }
.badge.type-iframe { color: var(--accent); border-color: #22d3ee55; }
.item .t .badge { font-weight: 500; margin-left: 6px; vertical-align: 1px; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, 'Segoe UI', Inter, sans-serif;
}
a { color: var(--accent); }
button, input { font: inherit; color: inherit; }

.app { display: grid; grid-template-columns: 340px 1fr; height: 100vh; }
.side { border-right: 1px solid var(--line); background: var(--panel); display: flex; flex-direction: column; min-height: 0; }
.side header { padding: 18px 18px 12px; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: .02em; }
.brand .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--danger); box-shadow: 0 0 0 4px #f8717122; }
.sub { color: var(--muted); font-size: 12px; margin-top: 4px; }

.block { padding: 16px 18px; border-bottom: 1px solid var(--line); }
.block h3 { margin: 0 0 10px; font-size: 11px; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); font-weight: 600; }
label { display: block; font-size: 12px; color: var(--muted); margin: 0 0 4px; }
input[type=text], input[type=url] {
  width: 100%; background: var(--bg); border: 1px solid var(--line); border-radius: 8px;
  padding: 9px 10px; outline: none; margin-bottom: 10px;
}
input:focus { border-color: var(--accent); }

.check { display: flex; align-items: flex-start; gap: 9px; cursor: pointer; color: var(--text); font-size: 13px; margin: 2px 0 14px; }
.check input { width: 16px; height: 16px; margin: 2px 0 0; accent-color: var(--accent); cursor: pointer; flex: none; }
.check small { display: block; color: var(--muted); font-size: 11px; margin-top: 1px; }
.check code { font: 11px var(--mono); color: var(--muted); }
.check.sm { font-size: 12px; margin: 0 0 8px; align-items: center; }
.check.sm input { margin: 0; width: 14px; height: 14px; }

.badge { font-size: 11px; padding: 3px 8px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); white-space: nowrap; }
.badge.on { color: var(--ok); border-color: #34d39955; }
input.mono { font-family: var(--mono); font-size: 12px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border: 1px solid var(--line); background: var(--panel-2); border-radius: 8px;
  padding: 8px 12px; cursor: pointer; white-space: nowrap; text-decoration: none; color: var(--text);
}
.btn:hover { border-color: #3a4a60; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #062029; font-weight: 600; }
.btn.pick.on { background: var(--pick); border-color: var(--pick); color: #1f0d02; font-weight: 600; }
.btn.save { background: var(--ok); border-color: var(--ok); color: #04241a; font-weight: 600; }
.btn.danger:hover { border-color: var(--danger); color: var(--danger); }
.btn.sm { padding: 5px 9px; font-size: 12px; }
.row { display: flex; gap: 8px; }
.row > * { flex: 1; }

.list { overflow: auto; flex: 1; padding: 8px 10px 16px; }
.empty { color: var(--muted); font-size: 13px; padding: 10px 8px; }
.item { background: var(--panel-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 12px; margin: 8px 0; }
.item .t { font-weight: 600; }
.item .u { color: var(--muted); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.item code { display: block; font: 11px/1.4 var(--mono); color: var(--pick); margin: 6px 0 8px; word-break: break-all; }
.item .actions { display: flex; gap: 6px; }

.main { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.toolbar {
  display: flex; align-items: center; gap: 8px; padding: 10px 14px; border-bottom: 1px solid var(--line);
  background: var(--panel); flex-wrap: wrap;
}
.toolbar .sel { flex: 1; min-width: 220px; display: flex; gap: 6px; }
.toolbar .sel input { margin: 0; }
.status { font-size: 12px; color: var(--muted); padding: 6px 14px; border-bottom: 1px solid var(--line); display: flex; gap: 14px; align-items: center; min-height: 31px; }
.status .pill { display: inline-flex; align-items: center; gap: 6px; }
.status .pill::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--muted); }
.status .pill.ok::before { background: var(--ok); }
.status .pill.wait::before { background: #fbbf24; }
.status .pill.err::before { background: var(--danger); }
.status .info { font-family: var(--mono); color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.stage { position: relative; flex: 1; background: #05070a; min-height: 0; }
.stage iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; background: #fff; }
.stage .placeholder { position: absolute; inset: 0; display: grid; place-items: center; color: var(--muted); text-align: center; padding: 24px; }
.stage .placeholder ol { text-align: left; max-width: 440px; line-height: 1.9; }
.stage.preview iframe { background: #000; }

.toast { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); background: #0f172a; border: 1px solid var(--line); padding: 10px 16px; border-radius: 8px; opacity: 0; transition: opacity .2s; pointer-events: none; }
.toast.show { opacity: 1; }

@media (max-width: 860px) {
  .app { grid-template-columns: 1fr; grid-template-rows: auto 70vh; height: auto; }
  .side { border-right: 0; border-bottom: 1px solid var(--line); }
  .list { max-height: 320px; }
}

/* view / embed */
.view { display: flex; flex-direction: column; height: 100vh; }
.view header { display: flex; align-items: center; gap: 14px; padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--line); }
.view header .t { font-weight: 700; }
.view header .u { color: var(--muted); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; }
.frame { position: relative; flex: 1; background: #000; }
.frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; background: #000; }
.cover { position: absolute; inset: 0; display: grid; place-items: center; background: #000; color: var(--muted); font-size: 13px; text-align: center; padding: 20px; transition: opacity .3s; }
.cover.hide { opacity: 0; pointer-events: none; }
.spinner { width: 28px; height: 28px; border: 3px solid #1e293b; border-top-color: var(--accent); border-radius: 50%; animation: spin 1s linear infinite; margin: 0 auto 10px; }
@keyframes spin { to { transform: rotate(360deg); } }