:root {
  --bg: #0e141c;
  --panel: #161d27;
  --border: #2a3544;
  --text: #e7ecf3;
  --muted: #9aa8b8;
  --accent: #3d9a6a;
  --accent2: #2f7a54;
  --bad: #d4544a;
  --sidebar: 220px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text); font-family: var(--font); }
a { color: var(--accent); text-decoration: none; }
button, input, select, textarea {
  font: inherit; color: var(--text); background: #0f151d; border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 12px;
}
button {
  background: var(--accent); border-color: transparent; cursor: pointer; font-weight: 600;
}
button.secondary { background: transparent; border-color: var(--border); color: var(--text); }
button:disabled { opacity: 0.5; cursor: not-allowed; }
label { display: flex; flex-direction: column; gap: 6px; font-size: 0.85rem; color: var(--muted); }
.err { color: var(--bad); font-size: 0.85rem; min-height: 1.2em; }

/* login */
.login-page {
  min-height: 100%;
  display: grid;
  place-items: center;
  background:
    radial-gradient(900px 500px at 10% -10%, #1a3a2c 0%, transparent 55%),
    radial-gradient(700px 400px at 100% 0%, #1a2838 0%, transparent 50%),
    var(--bg);
}
.login-card {
  width: min(400px, 92vw);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px 28px 24px;
}
.login-card h1 { margin: 0 0 4px; font-size: 1.45rem; letter-spacing: 0.02em; }
.login-card .sub { margin: 0 0 20px; color: var(--muted); font-size: 0.9rem; }
.login-card form { display: flex; flex-direction: column; gap: 14px; }
.captcha-row { display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: end; }
.captcha-q {
  padding: 8px 12px; border: 1px dashed var(--border); border-radius: 8px;
  color: var(--text); min-width: 110px; text-align: center; user-select: none;
}

/* app shell */
.app { display: flex; min-height: 100%; }
.sidebar {
  width: var(--sidebar); flex-shrink: 0; background: #121820; border-right: 1px solid var(--border);
  display: flex; flex-direction: column; padding: 16px 12px;
}
.brand { font-weight: 700; font-size: 1.1rem; padding: 8px 10px 18px; }
.nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.nav button {
  text-align: left; background: transparent; border: none; color: var(--muted);
  padding: 10px 12px; border-radius: 8px; font-weight: 500;
}
.nav button:hover { background: #1a222d; color: var(--text); }
.nav button.active { background: #1e2a24; color: #b7ebc8; }
.side-foot { padding: 12px 10px; color: var(--muted); font-size: 0.8rem; border-top: 1px solid var(--border); }
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 18px; border-bottom: 1px solid var(--border); background: #121820;
}
.topbar h2 { margin: 0; font-size: 1.05rem; font-weight: 600; }
.content { flex: 1; padding: 16px 18px; overflow: auto; }
.panel { display: none; height: 100%; }
.panel.active { display: block; }
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 16px;
  margin-bottom: 14px;
}
.card h3 { margin: 0 0 10px; font-size: 1rem; }
.meta { color: var(--muted); font-size: 0.85rem; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
table.data { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
table.data th, table.data td { border-bottom: 1px solid var(--border); padding: 8px 6px; text-align: left; }
table.data th { color: var(--muted); font-weight: 500; }
.dash-frame {
  width: 100%; height: calc(100vh - 110px); border: 1px solid var(--border);
  border-radius: 10px; background: #0a0e14;
}
.hint { color: var(--muted); font-size: 0.85rem; line-height: 1.5; }
.badge {
  display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 0.75rem;
  background: #243028; color: #9fd4b3;
}
.asset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
  margin-top: 12px;
}
.asset-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px;
  background: #121820;
  font-size: 0.78rem;
  color: var(--muted);
}
.asset-card label { color: var(--text); gap: 8px; }
.asset-card img, .asset-card video {
  width: 100%; height: 90px; object-fit: cover; border-radius: 6px; background: #0a0e14;
}
.asset-card .name { word-break: break-all; }
.subhead {
  margin: 0 0 10px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text);
  border-left: 3px solid var(--accent);
  padding-left: 8px;
}
.asset-browse { display: flex; flex-direction: column; gap: 14px; }
.asset-pkg {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #121820;
  overflow: hidden;
}
.asset-pkg-head {
  display: flex; flex-wrap: wrap; gap: 8px; align-items: baseline;
  padding: 10px 12px;
  background: #1a222d;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  user-select: none;
}
.asset-pkg-head:hover { background: #222b36; }
.asset-pkg-head .pkg-toggle {
  color: var(--accent);
  font-size: 0.75rem;
  min-width: 1.2em;
}
.asset-pkg-body { display: none; }
.asset-pkg.open .asset-pkg-body { display: block; }
.asset-pkg.open .asset-pkg-head { border-bottom-color: var(--border); }
.asset-pkg:not(.open) .asset-pkg-head { border-bottom: none; }
.asset-pkg-head .pkg-name { font-weight: 600; color: var(--text); word-break: break-all; }
.asset-pkg-head .pkg-meta { color: var(--muted); font-size: 0.8rem; }
.asset-dir {
  border-top: 1px solid var(--border);
  padding: 10px 12px 12px;
}
.asset-dir:first-of-type { border-top: none; }
.asset-dir-title {
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  margin-bottom: 8px;
  font-size: 0.82rem;
}
.asset-dir-title .path {
  font-family: Consolas, "Courier New", monospace;
  color: #b7ebc8;
  background: #0f151d;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 8px;
}
.asset-dir-title .kind-tag {
  font-size: 0.72rem;
  padding: 1px 7px;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--muted);
}
.asset-dir-title .kind-tag.image { border-color: #3d6a9a; color: #9ec0e6; }
.asset-dir-title .kind-tag.video { border-color: #9a6a3d; color: #e6c09e; }
.asset-dir-title .kind-tag.icon { border-color: #6a3d9a; color: #c09ee6; }