:root {
  --bg: #0f1115;
  --surface: #171a21;
  --surface-2: #1f232c;
  --border: #2a2f3a;
  --text: #e7e9ee;
  --muted: #8b93a3;
  --accent: #4fb3ff;
  --accent-ink: #06121d;
  --good: #3ecf8e;
  --warn: #f5b84b;
  --bad: #ff6b6b;
  --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f7f9;
    --surface: #ffffff;
    --surface-2: #f0f2f5;
    --border: #dde1e7;
    --text: #161a21;
    --muted: #5d6676;
    --accent: #0a6fd1;
    --accent-ink: #ffffff;
    --good: #148a57;
    --warn: #a86a00;
    --bad: #c62828;
    color-scheme: light;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  display: grid;
  grid-template-rows: 52px minmax(0, 1fr);
}
h1 { font-size: 18px; margin: 0; font-weight: 600; word-break: break-all; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.spacer { flex: 1; }

.top {
  display: flex; align-items: center; gap: 16px; padding: 0 16px;
  background: var(--surface); border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; letter-spacing: .2px; display: flex; align-items: center; gap: 8px; }
.logo { width: 18px; height: 18px; border-radius: 4px; background: linear-gradient(135deg, var(--accent), #8b5cf6); }
.status { margin-left: auto; font-size: 12px; }

.layout { display: grid; grid-template-columns: 280px minmax(0, 1fr); min-height: 0; }
.side { border-right: 1px solid var(--border); padding: 16px; overflow: auto; display: flex; flex-direction: column; gap: 12px; }
.main { padding: 20px; overflow: auto; min-width: 0; }

.drop {
  display: flex; flex-direction: column; align-items: center; gap: 4px; text-align: center;
  padding: 22px 12px; border: 1.5px dashed var(--border); border-radius: var(--radius);
  background: var(--surface); cursor: pointer; transition: border-color .15s, background .15s;
}
.drop:hover, .drop:focus-visible, .drop.over { border-color: var(--accent); background: var(--surface-2); outline: none; }

.files { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.files li {
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 2px 8px; align-items: center;
  padding: 8px 10px; border-radius: 8px; background: var(--surface); border: 1px solid transparent; cursor: pointer;
}
.files li:hover { border-color: var(--border); }
.files li.active { border-color: var(--accent); }
.files .fn { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.files .meta { grid-column: 1; font-size: 12px; color: var(--muted); }
.files .x { grid-row: 1 / span 2; grid-column: 2; background: none; border: 0; color: var(--muted); cursor: pointer; font-size: 16px; padding: 4px; }
.files .x:hover { color: var(--bad); }
.progress { height: 3px; background: var(--border); border-radius: 2px; overflow: hidden; grid-column: 1 / -1; }
.progress > i { display: block; height: 100%; background: var(--accent); width: 0; transition: width .1s; }

.empty { max-width: 560px; margin: 10vh auto; text-align: center; }
.empty h1 { font-size: 22px; margin-bottom: 8px; }

.file-head { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-bottom: 14px; }
.title { display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px; min-width: 0; }
.chip { font-size: 11px; text-transform: uppercase; letter-spacing: .6px; padding: 2px 8px; border-radius: 99px; background: var(--surface-2); border: 1px solid var(--border); }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-left: auto; }
.btn {
  display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  font: inherit; font-size: 13px; cursor: pointer; text-decoration: none;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn[disabled] { opacity: .5; cursor: progress; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 16px; overflow-x: auto; }
.tabs button {
  background: none; border: 0; color: var(--muted); font: inherit; padding: 8px 12px; cursor: pointer;
  border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap;
}
.tabs button[aria-selected="true"] { color: var(--text); border-bottom-color: var(--accent); }

.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; margin-bottom: 18px; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; }
.tile .v { font-size: 22px; font-weight: 650; font-variant-numeric: tabular-nums; }
.tile .k { font-size: 12px; color: var(--muted); }
.tile.good .v { color: var(--good); }
.tile.warn .v { color: var(--warn); }
.tile.bad .v { color: var(--bad); }

h2 { font-size: 14px; margin: 18px 0 8px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .5px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { font-size: 12px; color: var(--muted); font-weight: 600; background: var(--surface); position: sticky; top: 0; }
tr:last-child td { border-bottom: 0; }
td.name { white-space: normal; word-break: break-all; }
.filter { width: 100%; max-width: 360px; padding: 7px 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--surface); color: var(--text); font: inherit; margin-bottom: 10px; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 12px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; cursor: zoom-in; }
.card:hover { border-color: var(--accent); }
.card .thumb { aspect-ratio: 1; display: grid; place-items: center; }
.card .thumb img { max-width: 100%; max-height: 100%; image-rendering: auto; }
.card .cap { padding: 8px 10px; font-size: 12px; }
.card .cap b { display: block; font-weight: 600; font-size: 12.5px; word-break: break-all; }
.checker {
  background-color: #2b2f37;
  background-image: linear-gradient(45deg, #353a44 25%, transparent 25%), linear-gradient(-45deg, #353a44 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #353a44 75%), linear-gradient(-45deg, transparent 75%, #353a44 75%);
  background-size: 16px 16px; background-position: 0 0, 0 8px, 8px -8px, -8px 0;
}

.viewer { height: min(70vh, 640px); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: radial-gradient(circle at 50% 30%, var(--surface-2), var(--bg)); }
.viewer model-viewer { width: 100%; height: 100%; --poster-color: transparent; }

pre.json { font: 12.5px/1.5 var(--mono); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; overflow: auto; max-height: 70vh; margin: 0; }
.j-key { color: #7cc4ff; } .j-str { color: #a5d6a7; } .j-num { color: #ffcc80; } .j-lit { color: #ce93d8; }
@media (prefers-color-scheme: light) { .j-key { color: #0a5aa8; } .j-str { color: #1b7a33; } .j-num { color: #a35a00; } .j-lit { color: #7b1fa2; } }

.notice { padding: 12px 14px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface); }
.notice.bad { border-color: var(--bad); }
.spin { display: inline-block; width: 14px; height: 14px; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite; vertical-align: -2px; margin-right: 8px; }
@keyframes spin { to { transform: rotate(360deg); } }

.lightbox { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); color: var(--text); padding: 0; max-width: min(92vw, 1100px); width: 100%; }
.lightbox::backdrop { background: rgba(0, 0, 0, .65); }
.lb-head { display: flex; align-items: center; gap: 8px; padding: 10px 12px; border-bottom: 1px solid var(--border); word-break: break-all; }
.lightbox .checker { display: grid; place-items: center; max-height: 80vh; overflow: auto; }
.lightbox img { max-width: 100%; }

.toast { position: fixed; right: 16px; bottom: 16px; max-width: 460px; padding: 10px 14px; border-radius: 8px; background: var(--surface); border: 1px solid var(--bad); box-shadow: 0 8px 30px rgba(0,0,0,.35); display: flex; gap: 12px; align-items: center; white-space: pre-line; word-break: break-word; }
.toast.info { border-color: var(--accent); }
.toast .btn { flex: none; }
body.desktop .top { display: none; }
body.desktop { grid-template-rows: minmax(0, 1fr); }

@media (max-width: 760px) {
  body { grid-template-rows: 52px auto; }
  .layout { grid-template-columns: 1fr; }
  .side { border-right: 0; border-bottom: 1px solid var(--border); max-height: 40vh; }
  .main { padding: 16px; }
  .actions { margin-left: 0; }
}