:root {
  --bg: #0f1115;
  --panel: #1a1d24;
  --panel-2: #22262f;
  --border: #2c313c;
  --text: #e6e8ec;
  --muted: #9aa2af;
  --accent: #ff7a29; /* Houdini 橙 */
  --accent-2: #3a7afe;
  --danger: #e5484d;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 12px; }
.logo {
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #ff9d5c);
  color: #1a1d24; font-weight: 800; font-size: 22px;
  display: grid; place-items: center;
}
.brand h1 { margin: 0; font-size: 18px; }
.subtitle { margin: 2px 0 0; font-size: 12px; color: var(--muted); }

.actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
#search {
  width: 260px; max-width: 50vw;
  padding: 8px 12px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--panel-2); color: var(--text);
}

.btn {
  padding: 8px 14px; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--border); background: var(--panel-2); color: var(--text);
  font-size: 14px;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: #1a1d24; border-color: var(--accent); font-weight: 600; }
.btn.danger { background: transparent; color: var(--danger); border-color: var(--danger); }
.btn.small { padding: 6px 10px; font-size: 13px; }
.hidden { display: none !important; }

main { padding: 24px; max-width: 1100px; margin: 0 auto; }
.table-wrap { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }

table { width: 100%; border-collapse: collapse; }
thead th {
  text-align: left; padding: 12px 16px; font-size: 13px; color: var(--muted);
  background: var(--panel-2); border-bottom: 1px solid var(--border);
}
.col-icon { width: 64px; }
.col-cat { width: 90px; }
.col-op { width: 40px; }

tbody tr.row { border-bottom: 1px solid var(--border); cursor: pointer; }
tbody tr.row:hover { background: #20242d; }
tbody td { padding: 12px 16px; vertical-align: middle; }

.node-icon {
  width: 34px; height: 34px; border-radius: 8px; object-fit: cover;
  background: var(--panel-2); border: 1px solid var(--border);
}
.node-icon.placeholder {
  display: grid; place-items: center; color: var(--muted); font-size: 16px;
}
.node-name { font-weight: 600; }
.cat-badge {
  display: inline-block; padding: 2px 8px; border-radius: 999px;
  font-size: 12px; background: rgba(58,122,254,.15); color: #8db1ff; border: 1px solid rgba(58,122,254,.3);
}
.summary { color: var(--muted); font-size: 14px; }
.caret { color: var(--muted); transition: transform .15s; display: inline-block; }
tr.row.open .caret { transform: rotate(90deg); }

tr.detail-row td { padding: 0 16px; background: #14171d; }
.detail-inner {
  padding: 16px 8px; white-space: pre-wrap; line-height: 1.7; color: #d3d7de;
  border-top: 1px dashed var(--border);
}
.detail-actions { margin-top: 12px; }

.empty { text-align: center; color: var(--muted); padding: 32px; }

/* 弹窗 */
.modal {
  position: fixed; inset: 0; background: rgba(0,0,0,.55);
  display: grid; place-items: center; z-index: 100; padding: 16px;
}
.modal-card {
  width: 420px; max-width: 100%; background: var(--panel);
  border: 1px solid var(--border); border-radius: 14px; padding: 20px;
}
.modal-card.wide { width: 640px; max-height: 90vh; overflow: auto; }
.modal-card h3 { margin: 0 0 14px; }
.modal-card label { display: block; margin: 10px 0; font-size: 13px; color: var(--muted); }
.modal-card input[type="text"],
.modal-card input[type="password"],
.modal-card textarea {
  width: 100%; margin-top: 6px; padding: 9px 12px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--panel-2); color: var(--text);
  font-family: inherit; font-size: 14px;
}
.modal-card textarea { resize: vertical; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.icon-row { display: flex; align-items: center; gap: 8px; margin-top: 6px; }
.icon-row input[type="text"] { flex: 1; margin-top: 0; }
.icon-preview { width: 40px; height: 40px; border-radius: 8px; object-fit: cover; border: 1px solid var(--border); }
.modal-actions { display: flex; align-items: center; gap: 8px; margin-top: 16px; }
.spacer { flex: 1; }
.err { color: var(--danger); font-size: 13px; margin: 6px 0 0; }

@media (max-width: 640px) {
  .col-cat, .col-icon { display: none; }
  .form-grid { grid-template-columns: 1fr; }
}