:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --line: #d9dde3;
  --line-soft: #eceff3;
  --text: #1f2328;
  --muted: #6b7280;
  --primary: #1a56db;
  --primary-dark: #1e40af;
  --hover: #eef2f7;
  --hl: #ffe58a;
  --hl-cur: #ff9c3a;
  --fold-bg: #eef0f3;
  --c-key: #1a56db;
  --c-str: #0a7d38;
  --c-num: #b45309;
  --c-bool: #7c3aed;
  --c-null: #8b949e;
  --c-punc: #8b949e;
  --editor-bg: #fafbfc;
  --radius: 8px;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
}

body {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.spacer { flex: 1 1 auto; }

/* ---------------- 顶部工具栏 ---------------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 8px; }
/* 站点图标统一使用 desktop/icon.ico（经 /favicon.ico 提供） */
.logo {
  display: inline-block; width: 30px; height: 30px; border-radius: 8px;
  object-fit: contain; background: none;
}
.title { font-size: 16px; font-weight: 600; }

.tools { display: flex; gap: 6px; flex-wrap: wrap; }

.btn {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  transition: background .15s, border-color .15s;
  white-space: nowrap;
}
.btn:hover { background: var(--hover); }
.btn:active { background: #e2e7ef; }
.btn.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.btn.primary:hover { background: var(--primary-dark); }
.btn.sm { padding: 2px 8px; font-size: 12px; }
.btn.ghost { border-color: transparent; background: transparent; color: var(--muted); font-size: 15px; line-height: 1; }
.btn.ghost:hover { background: var(--hover); color: var(--text); }
/* 链接样式的按钮（下载桌面端） */
a.btn { text-decoration: none; display: inline-flex; align-items: center; }
a.btn.dl { border-color: #0a7d38; color: #0a7d38; }
a.btn.dl:hover { background: #e8f6ed; }
a.btn.disabled { pointer-events: none; opacity: .5; border-color: var(--line); color: var(--muted); }

/* ---------------- 搜索条 ---------------- */
.searchbar {
  display: flex; flex-direction: column; gap: 6px;
  padding: 8px 12px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
}
.sb-row { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.searchbar[hidden] { display: none; }
.sinput {
  width: 220px; padding: 4px 8px;
  border: 1px solid var(--line); border-radius: 6px;
  font-size: 13px; outline: none; background: #fff; color: var(--text);
}
.sinput:focus { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(26,86,219,.12); }
.ssel { padding: 4px 6px; border: 1px solid var(--line); border-radius: 6px; font-size: 13px; background: #fff; }
.chk { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; color: var(--muted); cursor: pointer; user-select: none; }
.sb-status { font-size: 12px; color: var(--muted); min-width: 90px; }
.hint { font-size: 12px; color: var(--muted); }

/* ---------------- 工作区 ---------------- */
.workspace {
  flex: 1 1 auto;
  display: flex;
  min-height: 0;
  gap: 0;
}

.pane {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin: 10px;
  overflow: hidden;
}
#paneSource { flex: 1 1 50%; }
#paneResult { flex: 1 1 50%; }

.phead {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 10px;
  background: #f7f8fa;
  border-bottom: 1px solid var(--line-soft);
}
.pname { font-size: 13px; font-weight: 600; }
.pmeta { font-size: 12px; color: var(--muted); }
.zoom { display: flex; gap: 4px; }

.pbody { position: relative; flex: 1 1 auto; min-height: 0; display: flex; }

/* 输入编辑器（textarea + 高亮镜像层） */
.editor-wrap { position: relative; flex: 1 1 auto; min-width: 0; overflow: hidden; }
.editor, .backdrop {
  position: absolute; inset: 0;
  margin: 0; padding: 10px 12px;
  font: 13px/1.6 "Cascadia Mono", Consolas, "Courier New", "Microsoft YaHei", monospace;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: break-word;
  border: 0;
  overflow: auto;
}
.editor {
  background: transparent;
  color: var(--text);
  resize: none;
  outline: none;
  tab-size: 4;
}
.backdrop { pointer-events: none; color: transparent; background: var(--editor-bg); z-index: 0; }
.editor { z-index: 1; }
.highlights { min-height: 100%; }
.highlights mark { background: var(--hl); color: transparent; border-radius: 2px; }
.highlights mark.cur { background: var(--hl-cur); }

/* 结果查看器 */
.viewer-wrap { position: absolute; inset: 0; overflow: hidden; }
.viewer {
  position: absolute; inset: 0;
  display: flex;
  overflow: auto;
  background: var(--card);
  font: 13px/1.6 "Cascadia Mono", Consolas, "Courier New", "Microsoft YaHei", monospace;
  /* 关掉浏览器「滚动锚定」：它会在内容变化时自行挪动滚动位置，造成编辑时跳动 */
  overflow-anchor: none;
}
.viewer * { overflow-anchor: none; }
.gutter {
  flex: 0 0 auto;
  padding: 8px 4px 8px 8px;
  background: #f7f8fa;
  border-right: 1px solid var(--line-soft);
  text-align: center;
  color: var(--muted);
  user-select: none;
  align-self: flex-start;
  position: sticky;
  left: 0;
  z-index: 2;
}
.gutter .gl { height: 1.6em; line-height: 1.6em; cursor: default; white-space: pre; }
.gutter .gl.hit { cursor: pointer; color: var(--primary); font-weight: 700; }
.gutter .gl.hit:hover { background: var(--hover); border-radius: 3px; }

.code { flex: 1 1 auto; padding: 8px 12px; min-width: 0; }
.code .ln { height: 1.6em; line-height: 1.6em; white-space: pre; }
.code .ln.folded { background: var(--fold-bg); }

/* 语法着色 */
.t-key { color: var(--c-key); }
.t-str { color: var(--c-str); }
.t-num { color: var(--c-num); }
.t-bool { color: var(--c-bool); }
.t-null { color: var(--c-null); }
.t-punc { color: var(--c-punc); }

mark { background: var(--hl); color: inherit; border-radius: 2px; padding: 0; }
mark.cur { background: var(--hl-cur); }

.empty {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  color: var(--muted); font-size: 13px; pointer-events: none;
}
.empty[hidden] { display: none; }

/* 分隔条 */
.splitter { flex: 0 0 6px; cursor: col-resize; background: transparent; }

/* ---------------- 补偿记录 ---------------- */
.fixpanel {
  flex: 0 0 auto;
  height: 150px;
  display: flex; flex-direction: column;
  margin: 0 10px 10px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.fixpanel[hidden] { display: none; }
.fixhead {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 10px;
  background: #f7f8fa;
  border-bottom: 1px solid var(--line-soft);
  font-size: 13px; font-weight: 600;
}
.fixlist { flex: 1 1 auto; overflow: auto; padding: 6px 10px; font-size: 12px; color: #92400e; }
.fixlist .fi { padding: 1px 0; white-space: pre-wrap; word-break: break-all; }
.fixlist .none { color: var(--muted); }

/* ---------------- 状态栏 ---------------- */
.statusbar {
  display: flex; align-items: center; gap: 10px;
  padding: 5px 12px;
  background: var(--card);
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}
.status-text { color: #0a7d38; }
.status-text.err { color: #b91c1c; }

/* ---------------- 关于弹窗 ---------------- */
.modal {
  position: fixed; inset: 0;
  background: rgba(15, 23, 42, .45);
  display: flex; align-items: center; justify-content: center;
  z-index: 50;
}
.modal[hidden] { display: none; }
.modal-card {
  width: min(420px, 90vw);
  background: var(--card);
  border-radius: 12px;
  padding: 20px 22px;
  box-shadow: 0 20px 50px rgba(15, 23, 42, .25);
}
.modal-card h3 { margin: 0 0 6px; font-size: 18px; }
.modal-card h3 .ver {
  font-size: 12px; font-weight: 400; color: var(--muted);
  vertical-align: middle; margin-left: 4px;
  background: var(--hover); border-radius: 10px; padding: 1px 8px;
}
.modal-card .sub { color: var(--muted); font-size: 13px; margin-bottom: 12px; }
.modal-card .kv { display: flex; gap: 8px; font-size: 13px; padding: 3px 0; }
.modal-card .kv b { font-weight: 600; min-width: 56px; color: var(--muted); }
/* 官网链接：可点击打开新标签页 */
.modal-card .kv a {
  color: var(--primary); text-decoration: none;
  border-bottom: 1px solid transparent; cursor: pointer;
}
.modal-card .kv a:hover { border-bottom-color: var(--primary); }
.modal-foot { margin-top: 16px; text-align: right; }
.modal-card .modal-foot .btn + .btn { margin-left: 8px; }

/* ---------------- 意见反馈弹窗 ---------------- */
#fbModal .modal-card { width: min(560px, 92vw); }
.fb-row { margin-bottom: 12px; }
.fb-row.fb-two { display: flex; gap: 12px; }
.fb-row.fb-two .fb-field { flex: 1 1 0; display: block; }
.fb-label {
  display: block; font-size: 12px; color: var(--muted);
  margin-bottom: 5px;
}
.fb-types { display: flex; gap: 8px; flex-wrap: wrap; }
.fb-stars { display: inline-flex; gap: 4px; }
.fb-stars span {
  font-size: 22px; line-height: 1; color: var(--line);
  cursor: pointer; transition: color .12s, transform .12s;
}
.fb-stars span:hover { transform: scale(1.12); }
.fb-stars span.on { color: #f59e0b; }
.fb-stars-tip { margin-left: 10px; font-size: 12px; color: var(--muted); }
.fb-input {
  width: 100%; box-sizing: border-box;
  padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px;
  font: inherit; font-size: 13px; color: var(--text); background: var(--bg);
  outline: none; resize: vertical; min-height: 96px;
}
.fb-input.sm { min-height: 0; }
.fb-input:focus { border-color: var(--primary); background: var(--card); }
.fb-count { text-align: right; font-size: 12px; color: var(--muted); margin-top: 3px; }
.fb-msg { min-height: 18px; font-size: 13px; color: var(--muted); }
.fb-msg.ok { color: #0a7d38; }
.fb-msg.err { color: #c81e1e; }

/* ---------------- 响应式（H5） ---------------- */
@media (max-width: 900px) {
  .workspace { flex-direction: column; }
  #paneSource, #paneResult { flex: 1 1 50%; margin: 8px; }
  .splitter { display: none; }
  .tools .btn { padding: 5px 9px; font-size: 12px; }
  .sinput { width: 150px; }
}