/* 向前文档解析 · 本地版 */

:root {
  --bg: #f2f4f7;
  --panel: #ffffff;
  --fg: #1f2328;
  --muted: #6b7280;
  --border: #e2e6ec;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --code-bg: #f6f8fa;
  --code-fg: #24292e;
  --quote-bg: #f0f6ff;
  --shadow: 0 1px 3px rgba(16, 24, 40, .08);
}

body.dark {
  --bg: #0f1115;
  --panel: #161a21;
  --fg: #e6e9ee;
  --muted: #8b93a1;
  --border: #262c36;
  --accent: #3b82f6;
  --accent-hover: #60a5fa;
  --code-bg: #0b0e13;
  --code-fg: #d5dbe4;
  --quote-bg: #111a2c;
  --shadow: 0 1px 3px rgba(0, 0, 0, .4);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", system-ui, sans-serif;
  font-size: 14px;
  color: var(--fg);
  background: var(--bg);
}

/* ---------- 顶栏 ---------- */
header {
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 10;
}

.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }

.logo {
  width: 34px; height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  color: #fff;
  font-weight: 700;
  font-size: 17px;
  display: flex; align-items: center; justify-content: center;
  flex: none;
}

.brand h1 {
  margin: 0; font-size: 16px; font-weight: 700; line-height: 1.2;
  white-space: nowrap;
}
.brand .sub {
  margin: 1px 0 0; font-size: 11px; color: var(--muted);
  white-space: nowrap;
}
.local-tag {
  font-size: 10px; font-weight: 500; color: var(--accent);
  border: 1px solid var(--accent); border-radius: 999px;
  padding: 1px 7px; margin-left: 4px; vertical-align: 2px;
}

.actions { display: flex; align-items: center; gap: 8px; flex: none; }

.actions button {
  padding: 6px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--fg);
  font-size: 13px;
  cursor: pointer;
  transition: background .15s, border-color .15s, opacity .15s;
}
.actions button:hover { background: var(--bg); border-color: var(--muted); }
.actions button:disabled { opacity: .55; cursor: wait; }
.actions button.primary {
  background: var(--accent); border-color: transparent; color: #fff; font-weight: 600;
}
.actions button.primary:hover { background: var(--accent-hover); }
.actions .sep { width: 1px; height: 22px; background: var(--border); margin: 0 2px; }

/* ---------- 主区 ---------- */
main { display: flex; height: calc(100vh - 58px); }

#editor-pane {
  width: 44%; flex: none;
  display: flex; flex-direction: column;
  background: var(--panel);
  border-right: 1px solid var(--border);
  min-width: 220px;
}

#input {
  flex: 1;
  width: 100%;
  border: 0; outline: none; resize: none;
  padding: 14px 16px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--fg);
  background: transparent;
  tab-size: 4;
}
#input::placeholder { color: var(--muted); }

.statusbar {
  height: 26px; flex: none;
  display: flex; align-items: center; gap: 14px;
  padding: 0 14px;
  font-size: 11.5px; color: var(--muted);
  border-top: 1px solid var(--border);
  background: var(--panel);
  white-space: nowrap; overflow: hidden;
}
#stat-msg { margin-left: auto; }

#divider {
  width: 6px; flex: none;
  cursor: col-resize;
  background: transparent;
  transition: background .15s;
}
#divider:hover, #divider.active { background: var(--accent); opacity: .45; }

#preview-pane {
  width: 56%; flex: none;
  overflow-y: auto;
  background: var(--bg);
}

#preview {
  max-width: 860px;
  margin: 0 auto;
  padding: 22px 28px 80px;
}
#preview:empty::before {
  content: "在左侧粘贴 AI 平台的内容，右侧会实时预览转换效果。\A\A 支持：Markdown、LaTeX 公式、Mermaid 流程图、表格、代码、图片、待办列表。";
  white-space: pre-line;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.9;
  display: block;
  padding: 24px 0;
}

/* ---------- Markdown 排版 ---------- */
.markdown-body { font-size: 15px; line-height: 1.75; word-wrap: break-word; }

.markdown-body h1, .markdown-body h2 {
  border-bottom: 1px solid var(--border);
  padding-bottom: .3em;
}
.markdown-body h1 { font-size: 1.85em; margin: 1.2em 0 .6em; }
.markdown-body h2 { font-size: 1.45em; margin: 1.3em 0 .55em; }
.markdown-body h3 { font-size: 1.2em; margin: 1.2em 0 .5em; }
.markdown-body h4, .markdown-body h5, .markdown-body h6 { font-size: 1em; margin: 1em 0 .4em; }
.markdown-body p { margin: .7em 0; }
.markdown-body a { color: var(--accent); text-decoration: none; }
.markdown-body a:hover { text-decoration: underline; }

.markdown-body code {
  font-family: Consolas, "Courier New", monospace;
  background: var(--code-bg);
  color: var(--code-fg);
  border-radius: 4px;
  padding: 2px 5px;
  font-size: 13px;
}
.markdown-body pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  overflow: auto;
  line-height: 1.6;
}
.markdown-body pre code {
  background: transparent;
  padding: 0;
  font-size: 13px;
  color: var(--code-fg);
}
.markdown-body pre code.hljs { background: transparent; padding: 0; }

.markdown-body blockquote {
  margin: .8em 0;
  padding: 4px 16px;
  border-left: 4px solid var(--accent);
  background: var(--quote-bg);
  border-radius: 0 6px 6px 0;
  color: var(--muted);
}
.markdown-body blockquote p { margin: .4em 0; }

.markdown-body ul, .markdown-body ol { padding-left: 1.8em; margin: .6em 0; }
.markdown-body li { margin: .25em 0; }
.markdown-body li > ul, .markdown-body li > ol { margin: .2em 0; }

.markdown-body table {
  border-collapse: collapse;
  margin: .9em 0;
  display: block;
  overflow-x: auto;
  max-width: 100%;
}
.markdown-body th, .markdown-body td {
  border: 1px solid var(--border);
  padding: 7px 12px;
  font-size: 14px;
}
.markdown-body th { background: var(--code-bg); font-weight: 600; }

.markdown-body hr { border: 0; border-top: 1px solid var(--border); margin: 1.4em 0; }
.markdown-body img { max-width: 100%; border-radius: 6px; }
.markdown-body .math-block { text-align: center; overflow-x: auto; margin: .8em 0; }
.markdown-body code.math-fallback {
  display: inline-block;
  background: #fff4e5;
  border: 1px dashed #e2a03f;
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 13px;
  white-space: pre-wrap;
}
.markdown-body .katex { font-size: 1.05em; }
.markdown-body .katex-display { margin: .6em 0; }
.markdown-body svg.mermaid { max-width: 100%; height: auto; }

/* ---------- Toast ---------- */
#toast {
  position: fixed;
  left: 50%; bottom: 34px;
  transform: translateX(-50%) translateY(16px);
  background: #1f2937;
  color: #fff;
  font-size: 13px;
  padding: 9px 18px;
  border-radius: 999px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, .25);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  z-index: 100;
  max-width: 80vw;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- 打印 / PDF ---------- */
@media print {
  body { background: #fff; }
  header, #editor-pane, #divider, #toast, .statusbar { display: none !important; }
  #preview-pane { width: 100% !important; overflow: visible; }
  #preview {
    max-width: none;
    padding: 0;
    color: #1a1a1a;
  }
  .markdown-body { font-size: 11pt; color: #1a1a1a; }
  .markdown-body pre { background: #f6f8fa; border: 1px solid #ddd; color: #24292e; }
  .markdown-body pre code { color: #24292e; }
  .markdown-body a { color: #0645ad; }
  .markdown-body table { display: table; }
  .markdown-body h1, .markdown-body h2, .markdown-body h3 { page-break-after: avoid; }
  .markdown-body pre, .markdown-body table, .markdown-body .math-block { page-break-inside: avoid; }
  .markdown-body img { max-width: 100%; }
  @page { size: A4; margin: 18mm 16mm; }
}