:root {
  --bg: #0d1117;
  --bg-soft: #161b22;
  --bg-elev: #1c2230;
  --bg-row-hover: #15203a;
  --border: #2a3140;
  --border-soft: #1f2630;
  --text: #e6edf3;
  --text-dim: #9aa6b2;
  --text-faint: #6b7785;
  --accent: #58a6ff;
  --accent-soft: rgba(88, 166, 255, 0.15);
  --accent-glow: rgba(88, 166, 255, 0.35);
  --green: #7ee787;
  --amber: #ffa657;
  --pink: #ff7eb6;
  --purple: #c77dff;
  --red: #ff6b6b;
  --key: #79c0ff;
  --string: #a5d6ff;
  --number: #ffa657;
  --bool: #c77dff;
  --null: #6b7785;
  --syntax-bg: #0a0e14;

  --topbar-h: 56px;
  --panel-head-h: 44px;
  --panel-foot-h: 30px;
  --row-h: 22px;
  --font-size: 13px;

  --radius: 10px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  background: radial-gradient(1200px 600px at 70% -10%, #142036 0%, transparent 60%),
              var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 14px;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* ============== TOPBAR ============== */
.topbar {
  height: var(--topbar-h);
  flex: 0 0 var(--topbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background: linear-gradient(180deg, #10162280, transparent),
              rgba(22, 27, 34, 0.85);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  position: relative;
  z-index: 10;
}
.brand { display: flex; align-items: center; gap: 10px; }
.logo {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 3px 9px;
  border-radius: 8px;
  font-size: 14px;
  letter-spacing: -1px;
}
.title { font-weight: 700; font-size: 15px; letter-spacing: 0.3px; }
.sub { color: var(--text-faint); font-size: 12px; }
.actions { display: flex; align-items: center; gap: 8px; }

.btn {
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  position: relative;
  transition: background .15s, border-color .15s, transform .05s;
}
.btn:hover { background: #252d3d; border-color: #3a4358; }
.btn:active { transform: translateY(1px); }
.btn.ghost { background: transparent; }
.btn.ghost:hover { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }

/* 语言切换按钮:稍紧凑,与状态药丸对齐 */
.btn.lang-btn {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  letter-spacing: 0.3px;
  padding: 7px 9px;
  border-color: var(--border-soft);
}
.btn.lang-btn:hover { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }

.btn input[type=file] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }

.status-pill {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  font-family: 'JetBrains Mono', monospace;
  border: 1px solid var(--border);
}
.status-pill.idle { color: var(--text-faint); }
.status-pill.parsing { color: var(--amber); border-color: rgba(255, 166, 87, 0.4); background: rgba(255,166,87,0.08); }
.status-pill.ok { color: var(--green); border-color: rgba(126, 231, 135, 0.4); background: rgba(126,231,135,0.08); }
.status-pill.err { color: var(--red); border-color: rgba(255, 107, 107, 0.4); background: rgba(255,107,107,0.08); }

/* ============== LAYOUT ============== */
.layout {
  flex: 1;
  display: flex;
  min-height: 0;
  position: relative;
}

.editor-panel, .viewer-panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
}
.editor-panel {
  width: 38%;
  min-width: 240px;
  max-width: 78%;
  background: var(--syntax-bg);
}
.viewer-panel { flex: 1; background: var(--bg); position: relative; }

.grip {
  width: 6px;
  cursor: col-resize;
  background: var(--border-soft);
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
  flex: 0 0 6px;
  transition: background .15s;
}
.grip:hover, .grip.active { background: var(--accent); }

.panel-head {
  height: var(--panel-head-h);
  flex: 0 0 var(--panel-head-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  border-bottom: 1px solid var(--border-soft);
  background: var(--bg-soft);
}
.panel-title { font-size: 12px; font-weight: 600; color: var(--text-dim); text-transform: uppercase; letter-spacing: 1px; }
.hint { font-size: 11px; color: var(--text-faint); }

.viewer-tools { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }

.search { display: flex; align-items: center; gap: 8px; position: relative; }
#searchInput {
  width: 240px;
  background: var(--syntax-bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 10px;
  border-radius: 7px;
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
#searchInput:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.search-meta { font-size: 11px; color: var(--text-faint); font-family: 'JetBrains Mono', monospace; min-width: 50px; }

.seg { display: inline-flex; background: var(--syntax-bg); border: 1px solid var(--border); border-radius: 7px; overflow: hidden; }
.seg-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  padding: 4px 9px;
  font-size: 12px;
  cursor: pointer;
  font-family: inherit;
  transition: background .12s, color .12s;
}
.seg-btn:hover { color: var(--text); background: var(--bg-elev); }
.seg-btn.active { background: var(--accent-soft); color: var(--accent); }
.font-label { font-size: 11px; color: var(--text-faint); padding: 0 2px; font-family: 'JetBrains Mono', monospace; display: inline-flex; align-items: center; }

/* ============== 行号跳转 ============== */
.goto { display: flex; align-items: center; gap: 6px; }
#gotoInput {
  width: 84px;
  background: var(--syntax-bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 8px;
  border-radius: 7px;
  font-size: 12px;
  font-family: 'JetBrains Mono', monospace;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
  text-align: center;
  /* 隐藏 number 上下小箭头，保持简洁 */
  -moz-appearance: textfield;
}
#gotoInput::-webkit-outer-spin-button,
#gotoInput::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
#gotoInput:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.goto-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 5px 10px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 7px;
  cursor: pointer;
  font-family: inherit;
  transition: background .12s, color .12s, border-color .12s;
  white-space: nowrap;
}
.goto-btn:hover { color: var(--accent); background: var(--accent-soft); border-color: var(--accent); }

/* ============== 模式切换 JSON / JSONL ============== */
.mode-switch {
  display: inline-flex;
  background: var(--syntax-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  padding: 2px;
  gap: 2px;
}
.mode-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  border-radius: 6px;
  transition: background .12s, color .12s, box-shadow .15s;
  white-space: nowrap;
}
.mode-btn:hover { color: var(--text); background: var(--bg-elev); }
.mode-btn.active {
  background: var(--accent-soft);
  color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent-glow);
}

/* ============== RAW INPUT ============== */
.raw-input {
  flex: 1;
  border: none;
  outline: none;
  resize: none;
  padding: 14px 16px;
  background: transparent;
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  line-height: 1.6;
  tab-size: 2;
  white-space: pre;
  overflow: auto;
  caret-color: var(--accent);
}

.panel-foot {
  height: var(--panel-foot-h);
  flex: 0 0 var(--panel-foot-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  border-top: 1px solid var(--border-soft);
  background: var(--bg-soft);
}
.meta { font-size: 11px; color: var(--text-faint); font-family: 'JetBrains Mono', monospace; }

/* ============== VIEWPORT / VIRTUAL SCROLL ============== */
.viewport {
  position: relative;
  flex: 1;
  overflow-y: auto;
  overflow-x: auto;
  outline: none;
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--font-size);
  line-height: var(--row-h);
}
.spacer {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 0;
  pointer-events: none;
}
.content {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  will-change: transform;
}
.row {
  height: var(--row-h);
  white-space: pre;
  display: flex;
  align-items: center;
  padding: 0 16px 0 0;
  overflow: hidden;            /* 兜底：禁止任何内容溢出 22px 行高，避免与下行重叠 */
}
.row.hoverable { cursor: default; }
.row.hoverable:hover { background: var(--bg-row-hover); }

/* 行号列 */
.ln {
  flex: 0 0 auto;
  min-width: 52px;
  width: 52px;
  padding-right: 14px;
  text-align: right;
  color: var(--text-faint);
  font-size: 11px;
  opacity: 0.7;
  user-select: none;
  border-right: 1px solid var(--border-soft);
  margin-right: 10px;
  transition: color .12s, opacity .12s;
}
.row:hover .ln { color: var(--text-dim); opacity: 1; }

/* 跳转目标行的瞬时高亮 */
.row.row-jump {
  animation: jump-flash 1.5s ease-out;
}
@keyframes jump-flash {
  0%      { background: rgba(88, 166, 255, 0.45); box-shadow: inset 3px 0 0 var(--accent); }
  30%     { background: rgba(88, 166, 255, 0.22); box-shadow: inset 3px 0 0 var(--accent); }
  100%    { background: transparent; box-shadow: none; }
}
.indent {
  flex: 0 0 auto;
  white-space: pre;
  letter-spacing: 0;
  color: transparent;
}
.toggle {
  flex: 0 0 auto;
  width: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-faint);
  user-select: none;
  transition: color .12s, transform .12s;
  font-size: 16px;
  font-weight: 700;
}
.toggle:hover { color: var(--accent); }
.toggle.open::before { content: '▾'; transform: scale(1.15); display: inline-block; }
.toggle.closed::before { content: '▸'; transform: scale(1.15); display: inline-block; }
.toggle.leaf { cursor: default; }
.toggle.leaf::before { content: ''; }
.val { white-space: pre; }

/* token colors */
.k-key { color: var(--key); }
.k-string { color: var(--string); }
.k-number { color: var(--number); }
.k-bool { color: var(--bool); }
.k-null { color: var(--null); }
.k-punc { color: var(--text-dim); }
.k-count { color: var(--text-faint); font-style: italic; margin-left: 6px; }

/* bracket hover match */
.row .toggle.open:hover ~ .val .open-bracket,
.row.collapser .val .close-bracket { color: var(--accent); }

/* highlight matched rows */
.row.match { background: rgba(255, 166, 87, 0.12); box-shadow: inset 3px 0 0 var(--amber); }
.row.match-current { background: rgba(255, 166, 87, 0.28) !important; box-shadow: inset 3px 0 0 var(--amber); }
mark { background: rgba(255, 234, 138, 0.45); color: inherit; border-radius: 2px; padding: 0 1px; }

/* collapsed content preview */
.collapser-preview { color: var(--text-faint); font-style: italic; }

/* ============== MINI MAP ============== */
.mini-map { display: none; }

/* ============== EMPTY STATE ============== */
.virtual-wrap { flex: 1; position: relative; min-height: 0; display: flex; flex-direction: column; }
.empty-state {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.empty-state.hidden { display: none; }
.empty-card {
  text-align: center;
  color: var(--text-dim);
  max-width: 460px;
  padding: 30px;
  pointer-events: auto;
}
.empty-logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 56px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  width: 100px; height: 100px;
  border-radius: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  box-shadow: 0 8px 30px var(--accent-glow);
}
.empty-card h2 { font-size: 20px; margin-bottom: 10px; color: var(--text); font-weight: 600; }
.empty-card p { font-size: 14px; line-height: 1.8; }
.empty-card p span.emph { color: var(--accent); font-weight: 600; }

/* ============== SCROLLBAR（更显眼） ============== */
/* Firefox */
* { scrollbar-width: thin; scrollbar-color: #4a5a73 transparent; }
/* WebKit / Chromium */
::-webkit-scrollbar { width: 14px; height: 14px; }
::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.04);
  border-radius: 8px;
}
::-webkit-scrollbar-thumb {
  background: #4a5a73;
  border-radius: 8px;
  border: 3px solid transparent;
  background-clip: content-box;
  min-height: 40px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
  background-clip: content-box;
  border: 3px solid transparent;
}
::-webkit-scrollbar-thumb:active { background: #7fafe0; background-clip: content-box; border: 3px solid transparent; }
::-webkit-scrollbar-corner { background: transparent; }

/* narrow screens */
@media (max-width: 820px) {
  .layout { flex-direction: column; }
  .editor-panel { width: 100% !important; max-width: none; height: 38%; min-height: 120px; }
  .grip { width: 100%; height: 6px; cursor: row-resize; }
  #searchInput { width: 150px; }
}

/* ============== GEO: AI/SEO 友好的视觉隐藏 ============== */
/* 用 clip + 移出视口实现视觉隐藏,文本对爬虫与 LLM 完全可见,Google 不降权 */
.seo-h1,
.seo-section {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
.seo-section h2 { margin: 8px 0 4px; }
.seo-section ul,
.seo-section p { margin: 4px 0; }