/* XML 工具样式 —— 基于 --xv-* 变量体系，沿用站点暗色适配 */
#xv-app {
  --xv-radius: 10px;
  --xv-border: var(--color-border-secondary, #e2e8f0);
  --xv-bg: var(--color-bg, #ffffff);
  --xv-fg: var(--color-text, #1a202c);
  --xv-muted: var(--color-text-secondary, #718096);
  --xv-accent: #2563eb;
  --xv-tag: #b45309;
  --xv-attr-k: #1d4ed8;
  --xv-attr-v: #15803d;
  --xv-text: #7c3aed;
  --xv-comment: #94a3b8;
  --xv-err: #dc2626;
  --xv-img: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 860px;
  margin: 24px auto 48px;
  font-size: 14px;
  color: var(--xv-fg);
}
html[mode=dark] #xv-app {
  --xv-border: #334155;
  --xv-bg: #0f172a;
  --xv-fg: #e2e8f0;
  --xv-muted: #94a3b8;
  --xv-tag: #fbbf24;
  --xv-attr-k: #60a5fa;
  --xv-attr-v: #34d399;
  --xv-text: #c084fc;
  --xv-comment: #64748b;
  --xv-err: #f87171;
}

#xv-app * { box-sizing: border-box; }
#xv-app textarea {
  width: 100%;
  min-height: 180px;
  padding: 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.6;
  color: var(--xv-fg);
  background: var(--xv-bg);
  border: 1px solid var(--xv-border);
  border-radius: var(--xv-radius);
  resize: vertical;
}
#xv-app textarea:focus {
  outline: none;
  border-color: var(--xv-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.18);
}

.xv-bar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.xv-btn {
  padding: 7px 14px;
  font-size: 13px;
  color: var(--xv-fg);
  background: transparent;
  border: 1px solid var(--xv-border);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.xv-btn:hover { border-color: var(--xv-accent); color: var(--xv-accent); }
.xv-btn-primary { background: var(--xv-accent); border-color: var(--xv-accent); color: #fff; }
.xv-btn-primary:hover { opacity: .9; color: #fff; }
.xv-btn.xv-btn-ghost { border-style: dashed; }
.xv-btn[aria-hidden="true"] { display: none; }

.xv-status {
  font-size: 12px;
  color: var(--xv-muted);
  padding: 0 2px;
}
.xv-status[aria-hidden="true"] { display: none; }

.xv-error {
  padding: 12px 14px;
  border: 1px solid rgba(220, 38, 38, .45);
  background: rgba(220, 38, 38, .08);
  border-radius: var(--xv-radius);
}
.xv-error[hidden] { display: none; }
.xv-err-title { color: var(--xv-err); font-weight: 600; margin-bottom: 4px; }
.xv-err-detail {
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 12.5px;
  color: var(--xv-muted);
  word-break: break-word;
}

.xv-tree-wrap { margin-top: 4px; }
.xv-tree-wrap[hidden] { display: none; }
.xv-tree-head { display: flex; gap: 8px; align-items: center; margin-bottom: 8px; flex-wrap: wrap; }
.xv-meta { font-size: 12px; color: var(--xv-muted); }
.xv-tree-search {
  flex: 1;
  min-width: 160px;
  padding: 6px 10px;
  font-size: 13px;
  color: var(--xv-fg);
  background: var(--xv-bg);
  border: 1px solid var(--xv-border);
  border-radius: 8px;
}

.xv-tree {
  overflow: auto;
  max-height: 480px;
  padding: 12px;
  border: 1px solid var(--xv-border);
  border-radius: var(--xv-radius);
  background: var(--xv-bg);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.7;
}

.xv-nest { padding-left: 18px; }
.xv-wrap.xv-collapsed > .xv-nest,
.xv-wrap.xv-collapsed > .xv-close { display: none; }
.xv-row { white-space: nowrap; }
.xv-arrow {
  display: inline-block;
  width: 14px;
  text-align: center;
  cursor: pointer;
  color: var(--xv-muted);
  user-select: none;
  transition: transform .12s;
}
.xv-arrow::before { content: "▸"; }
.xv-wrap:not(.xv-collapsed) > .xv-row > .xv-arrow { transform: rotate(90deg); display: inline-block; }
.xv-arrow-none { cursor: default; visibility: hidden; }
.xv-tag { color: var(--xv-tag); }
.xv-attr-k { color: var(--xv-attr-k); }
.xv-attr-v { color: var(--xv-attr-v); }
.xv-text { color: var(--xv-text); }
.xv-comment { color: var(--xv-comment); font-style: italic; }
.xv-cdata { color: var(--xv-text); }
.xv-row-text .xv-arrow-none { visibility: visible; color: transparent; }

.xv-img { text-decoration: underline dotted; cursor: help; position: relative; }
.xv-img::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: calc(100% + 6px);
  width: 120px;
  height: 80px;
  background-image: var(--xv-img);
  background-size: cover;
  background-position: center;
  border: 1px solid var(--xv-border);
  border-radius: 6px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, .22);
  opacity: 0;
  transform: translate(-50%, 4px);
  pointer-events: none;
  transition: opacity .15s, transform .15s;
  z-index: 5;
}
.xv-img:hover::after { opacity: 1; transform: translate(-50%, 0); }

.xv-row.xv-hit { background: rgba(37, 99, 235, .14); border-radius: 4px; outline: 1px solid rgba(37, 99, 235, .4); }
.xv-hint { font-size: 12.5px; color: var(--xv-muted); }
.xv-placeholder { padding: 24px; text-align: center; color: var(--xv-muted); border: 1px dashed var(--xv-border); border-radius: var(--xv-radius); }
.xv-placeholder[hidden] { display: none; }

html[mode=dark] #xv-app textarea,
html[mode=dark] #xv-app .xv-tree,
html[mode=dark] #xv-app .xv-tree-search { background: #0b1220; }

@media (max-width: 640px) {
  #xv-app { margin: 16px auto 32px; }
  .xv-nest { padding-left: 12px; }
  .xv-window-mode { margin: 0; padding: 12px; max-width: none; }
}