/*!
 * style.css —— 随浪 Markdown 在线编辑器 全站样式
 * 无外部字体、无 CDN 依赖：所有资源都在本站 /assets/vendor/ 下。
 */

/* ---------- 变量 ---------- */
:root {
  --bg: #ffffff;
  --bg-soft: #f6f8fb;
  --bg-card: #ffffff;
  --bg-pane: #ffffff;
  --bg-code: #f4f6f9;
  --border: #e3e8ef;
  --border-strong: #cfd8e3;
  --text: #101828;
  --text-soft: #4a5565;
  --text-dim: #7a8699;
  --accent: #0abf9a;
  --accent-dark: #079777;
  --accent-soft: #e6f9f4;
  --ok: #12805c;
  --warn: #b54708;
  --danger: #c0392b;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 8px 24px rgba(16, 24, 40, .06);
  --radius: 14px;
  --radius-sm: 9px;
  --wrap: 1200px;
  --prose: 800px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #0c1216;
  --bg-soft: #111a20;
  --bg-card: #131d24;
  --bg-pane: #0f171d;
  --bg-code: #16212a;
  --border: #223038;
  --border-strong: #33454f;
  --text: #e8eef2;
  --text-soft: #aebbc4;
  --text-dim: #7f8f99;
  --accent: #22d3a6;
  --accent-dark: #5ce0be;
  --accent-soft: #10261f;
  --ok: #4ade9f;
  --warn: #f5b477;
  --danger: #f87171;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 30px rgba(0, 0, 0, .28);
  color-scheme: dark;
}

/* ---------- 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; border: 0; }
a { color: var(--accent-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4, h5 { line-height: 1.28; margin: 0 0 .5em; font-weight: 700; letter-spacing: -.01em; }
p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.3em; }
li { margin: .3em 0; }
code, pre, textarea { font-family: var(--mono); }
kbd {
  font: 500 .85em/1 var(--mono);
  background: var(--bg-soft); border: 1px solid var(--border);
  border-bottom-width: 2px; border-radius: 5px; padding: 2px 5px; color: var(--text-soft);
}
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 18px; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 8px; top: 8px; z-index: 99; background: var(--bg-card); padding: 8px 12px; border-radius: 8px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  font: inherit; font-size: .84rem; line-height: 1;
  padding: 7px 11px; border-radius: 8px; cursor: pointer;
  background: transparent; color: var(--text-soft);
  border: 1px solid transparent; white-space: nowrap;
  transition: background .15s, color .15s, border-color .15s;
}
.btn:hover { background: var(--bg-soft); color: var(--text); }
.btn:active { transform: translateY(1px); }
.btn-ghost { border-color: var(--border); }
.btn-primary { background: var(--accent); color: #04231c; border-color: var(--accent); font-weight: 600; }
.btn-primary:hover { background: var(--accent-dark); color: #04231c; }
.btn-icon { padding: 7px 8px; }
.btn[aria-pressed="true"] { background: var(--accent-soft); color: var(--accent-dark); border-color: var(--accent); }
.btn svg { width: 15px; height: 15px; flex: none; }
.btn .kk { font-size: .72rem; opacity: .6; font-family: var(--mono); }

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 40;
  background: var(--bg);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.topbar-in {
  display: flex; align-items: center; gap: 10px;
  height: 54px; max-width: none; padding: 0 14px;
}
.brand { display: flex; align-items: center; gap: 9px; font-weight: 700; color: var(--text); font-size: 1rem; }
.brand:hover { text-decoration: none; }
.brand svg { width: 22px; height: 22px; }
.brand small { display: block; font-weight: 400; font-size: .72rem; color: var(--text-dim); line-height: 1.2; }
.topbar .spacer { flex: 1; }
.topbar nav { display: flex; align-items: center; gap: 2px; }

/* ---------- 工具栏 ---------- */
.toolbar {
  display: flex; align-items: center; gap: 4px; flex-wrap: nowrap;
  padding: 7px 12px; border-bottom: 1px solid var(--border);
  background: var(--bg-card); overflow-x: auto; scrollbar-width: thin;
}
.toolbar::-webkit-scrollbar { height: 5px; }
.toolbar::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }
.tgroup { display: flex; align-items: center; gap: 2px; flex: none; }
.tsep { width: 1px; height: 20px; background: var(--border); margin: 0 5px; flex: none; }
.tlabel { font-size: .72rem; color: var(--text-dim); padding: 0 4px; flex: none; }

/* 下拉菜单
   ⚠️ 面板必须用 position: fixed：工具栏为了能横向滚动设了 overflow，
      绝对定位的子元素会被工具栏的裁剪框剪掉（表现为「点了没反应」，
      其实是面板整个落在工具栏外面看不见）。定位由 app.js 的 openMenu() 算。 */
.menu { position: relative; flex: none; }
.menu > .btn { border-color: var(--border); }
.menu-panel {
  position: fixed; left: 0; top: 0; z-index: 60;
  min-width: 240px; max-width: min(92vw, 360px);
  max-height: min(72vh, 520px); overflow-y: auto;
  padding: 6px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); box-shadow: var(--shadow);
}
.menu-panel[hidden] { display: none; }
.menu-panel button {
  display: flex; width: 100%; align-items: center; gap: 9px; text-align: left;
  font: inherit; font-size: .87rem; padding: 8px 10px; border: 0; border-radius: 7px;
  background: transparent; color: var(--text); cursor: pointer;
}
.menu-panel button:hover { background: var(--bg-soft); }
.menu-panel button .kk { margin-left: auto; font-size: .75rem; color: var(--text-dim); font-family: var(--mono); }
.menu-panel hr { border: 0; border-top: 1px solid var(--border); margin: 5px 0; }
.menu-panel .mp-title { font-size: .72rem; color: var(--text-dim); padding: 6px 10px 3px; }

/* ---------- 工作区 ---------- */
.workspace {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr) minmax(0, 1fr);
  height: calc(100vh - 54px - 47px - 30px);
  min-height: 380px;
  border-bottom: 1px solid var(--border);
}
.workspace.no-outline { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
.workspace.no-outline .pane-outline { display: none; }
.workspace.view-editor { grid-template-columns: 230px minmax(0, 1fr); }
.workspace.view-editor .pane-preview { display: none; }
.workspace.view-editor.no-outline { grid-template-columns: minmax(0, 1fr); }

.pane { display: flex; flex-direction: column; min-width: 0; min-height: 0; background: var(--bg-pane); }
.pane-editor { border-right: 1px solid var(--border); }
.pane-head {
  display: flex; align-items: center; gap: 8px; flex: none;
  padding: 6px 12px; font-size: .75rem; color: var(--text-dim);
  border-bottom: 1px solid var(--border); background: var(--bg-card);
}
.pane-head .spacer { flex: 1; }

/* 编辑器 */
.editor-wrap { position: relative; flex: 1; min-height: 0; display: flex; }
#editor {
  flex: 1; width: 100%; min-height: 0; resize: none;
  padding: 16px 18px 60px; border: 0; outline: none;
  background: var(--bg-pane); color: var(--text);
  font-size: 15px; line-height: 1.75; tab-size: 2;
}
#editor::placeholder { color: var(--text-dim); }
.workspace.dragging .editor-wrap::after {
  content: ""; position: absolute; inset: 8px; border: 2px dashed var(--accent);
  border-radius: var(--radius-sm); background: var(--accent-soft); opacity: .55; pointer-events: none;
}

/* 大纲 */
.pane-outline { border-right: 1px solid var(--border); background: var(--bg-card); }
#outline { flex: 1; overflow: auto; padding: 6px 8px 40px; }
#outline a {
  display: block; padding: 4px 8px; border-radius: 6px; font-size: .82rem;
  color: var(--text-soft); overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
#outline a:hover { background: var(--bg-soft); text-decoration: none; color: var(--text); }
#outline a.lv2 { padding-left: 18px; }
#outline a.lv3 { padding-left: 30px; font-size: .78rem; }
#outline a.lv4 { padding-left: 42px; font-size: .78rem; }
#outline .empty { padding: 14px 10px; font-size: .8rem; color: var(--text-dim); line-height: 1.6; }

/* 预览 */
.preview-scroll { flex: 1; overflow: auto; padding: 18px 22px 80px; }
.md-body { max-width: 780px; margin: 0 auto; font-size: 16px; line-height: 1.78; color: var(--text); word-wrap: break-word; }

/* ---------- Markdown 正文样式（预览区 / 也作为复制样式的基础） ---------- */
.md-body > *:first-child { margin-top: 0; }
.md-body h1, .md-body h2, .md-body h3, .md-body h4 { margin: 1.5em 0 .6em; }
.md-body h1 { font-size: 1.7rem; padding-bottom: .3em; border-bottom: 1px solid var(--border); }
.md-body h2 { font-size: 1.35rem; padding-bottom: .25em; border-bottom: 1px solid var(--border); }
.md-body h3 { font-size: 1.12rem; }
.md-body h4 { font-size: 1rem; }
.md-body a { border-bottom: 1px solid var(--border-strong); }
.md-body strong { font-weight: 700; }
.md-body blockquote {
  margin: 1.2em 0; padding: .6em 1.1em; color: var(--text-soft);
  border-left: 4px solid var(--accent); background: var(--bg-soft); border-radius: 0 8px 8px 0;
}
.md-body blockquote > :last-child { margin-bottom: 0; }
.md-body code {
  background: var(--bg-code); border-radius: 5px; padding: .15em .4em;
  font-size: .88em; color: var(--danger);
}
.md-body pre {
  background: var(--bg-code); border: 1px solid var(--border); border-radius: 10px;
  padding: 13px 15px; overflow: auto; margin: 1.2em 0;
}
.md-body pre code { background: none; padding: 0; color: inherit; font-size: .85em; line-height: 1.62; }
.md-body table { border-collapse: collapse; width: 100%; margin: 1.2em 0; font-size: .92em; display: block; overflow-x: auto; }
.md-body th, .md-body td { border: 1px solid var(--border-strong); padding: 7px 11px; text-align: left; }
.md-body thead th { background: var(--bg-soft); font-weight: 600; }
.md-body img { display: block; margin: 1.2em auto; border-radius: 8px; }
.md-body hr { border: 0; border-top: 1px solid var(--border); margin: 2em 0; }
.md-body ul, .md-body ol { padding-left: 1.5em; }
.md-body li input[type="checkbox"] { margin-right: .4em; }
.md-body .task-list-item { list-style: none; margin-left: -1.2em; }
.md-body .katex-display { overflow-x: auto; overflow-y: hidden; padding: 2px 0; }
.md-body pre.mermaid-src { display: none; }
.md-body .mermaid { text-align: center; margin: 1.4em 0; }
.md-body .mermaid svg { max-width: 100%; height: auto; }
.md-body .mermaid-error {
  background: #fdecea; color: #8a1f11; border: 1px solid #f5c2c0; border-radius: 8px;
  padding: 10px 12px; font-size: .85rem; white-space: pre-wrap;
}
.md-body mark { background: #fff3a3; color: inherit; }

/* ---------- 状态栏 ---------- */
.statusbar {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  padding: 5px 14px; font-size: .75rem; color: var(--text-dim);
  background: var(--bg-card); border-bottom: 1px solid var(--border);
  height: 30px; overflow: hidden;
}
.statusbar .spacer { flex: 1; }
.statusbar b { font-weight: 600; color: var(--text-soft); font-variant-numeric: tabular-nums; }
.dot-ok { color: var(--ok); }
.dot-warn { color: var(--warn); }

/* ---------- 提示 ---------- */
#toasts { position: fixed; left: 50%; bottom: 26px; transform: translateX(-50%); z-index: 90; display: flex; flex-direction: column; gap: 8px; align-items: center; pointer-events: none; }
.toast {
  background: #10231f; color: #eafff8; font-size: .85rem; padding: 9px 14px; border-radius: 999px;
  box-shadow: var(--shadow); border: 1px solid rgba(255,255,255,.12);
  opacity: 0; transform: translateY(8px); transition: opacity .2s, transform .2s; max-width: min(92vw, 520px);
}
.toast.show { opacity: 1; transform: none; }
.toast.err { background: #4a1512; color: #ffecea; }

/* ---------- 二维码弹层（分享链接） ---------- */
.modal { position: fixed; inset: 0; z-index: 95; display: flex; align-items: center; justify-content: center; background: rgba(6, 14, 18, .55); padding: 20px; }
.modal[hidden] { display: none; }
.modal-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; max-width: 460px; width: 100%; }
.modal-card h3 { margin-bottom: .4em; }
.modal-card input { width: 100%; font: .85rem var(--mono); padding: 9px 11px; border: 1px solid var(--border-strong); border-radius: 8px; background: var(--bg-soft); color: var(--text); }
.modal-card .row { display: flex; gap: 8px; margin-top: 12px; }

/* ---------- 内容区（工具下方的说明 / 教程） ---------- */
.doc { padding: 40px 0 10px; }
.doc section { margin-bottom: 34px; }
.doc h2 { font-size: clamp(1.2rem, 2.2vw, 1.5rem); }
.doc h3 { font-size: 1.05rem; margin-top: 1.4em; }
.lede { font-size: 1.03rem; color: var(--text-soft); }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 14px; margin: 18px 0; }
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; }
.card h3 { margin: 0 0 .35em; font-size: 1rem; display: flex; align-items: center; gap: 8px; }
.card p { margin: 0; font-size: .9rem; color: var(--text-soft); }
.steps { counter-reset: s; list-style: none; padding: 0; }
.steps li { counter-increment: s; position: relative; padding-left: 38px; margin: 12px 0; color: var(--text-soft); }
.steps li::before {
  content: counter(s); position: absolute; left: 0; top: 1px;
  width: 24px; height: 24px; border-radius: 50%; background: var(--accent-soft); color: var(--accent-dark);
  font-size: .8rem; font-weight: 700; display: flex; align-items: center; justify-content: center;
}
.faq details { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px 15px; margin-bottom: 9px; background: var(--bg-card); }
.faq summary { cursor: pointer; font-weight: 600; font-size: .95rem; }
.faq details p { margin: .7em 0 0; color: var(--text-soft); font-size: .92rem; }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--border); background: var(--bg-soft); padding: 34px 0 26px; margin-top: 26px; font-size: .9rem; }
.footer .cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 22px; }
.footer h3 { font-size: .95rem; margin-bottom: .5em; }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { margin: .35em 0; color: var(--text-soft); }
.footer .legal { margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--border); color: var(--text-dim); font-size: .82rem; display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 工具页的可访问性 & 打印 ---------- */
@media print {
  .topbar, .toolbar, .statusbar, .pane-outline, .pane-editor, .doc, .footer, #toasts, .skip-link { display: none !important; }
  .workspace { display: block; height: auto; }
  .pane-preview { display: block; }
  .preview-scroll { overflow: visible; padding: 0; }
  .md-body { max-width: none; }
}

/* ---------- 窄屏 ---------- */
@media (max-width: 900px) {
  .workspace { grid-template-columns: minmax(0, 1fr); height: auto; }
  .workspace.view-editor, .workspace.no-outline { grid-template-columns: minmax(0, 1fr); }
  .pane-outline { display: none; }
  .workspace.show-outline .pane-outline { display: flex; position: fixed; inset: 54px 0 30px 0; z-index: 45; }
  .pane-editor { border-right: 0; }
  .pane-editor #editor { min-height: 46vh; }
  .pane-preview { border-top: 1px solid var(--border); }
  .pane-preview .preview-scroll { max-height: none; }
  .workspace[data-mobile-tab="editor"] .pane-preview { display: none; }
  .workspace[data-mobile-tab="preview"] .pane-editor { display: none; }
  .mobile-tabs { display: flex !important; }
}
.mobile-tabs { display: none; gap: 4px; padding: 6px 10px; border-bottom: 1px solid var(--border); background: var(--bg-card); }
.mobile-tabs .btn { flex: 1; justify-content: center; }

/* 只看预览 */
.workspace.view-preview { grid-template-columns: minmax(0, 1fr); }
.workspace.view-preview .pane-outline,
.workspace.view-preview .pane-editor { display: none; }

/* 状态栏上的小链接 */
.statusbar a { color: var(--text-dim); }
.statusbar .kbd-hint { opacity: .8; }

/* ---------- 窄屏顶栏：品牌不换行、副标题藏起来，免得把工具栏挤下去 ---------- */
@media (max-width: 760px) {
  .topbar-in { height: 50px; padding: 0 10px; gap: 6px; }
  .brand { font-size: .92rem; min-width: 0; gap: 7px; }
  .brand svg { width: 19px; height: 19px; }
  .brand span { display: block; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .brand small { display: none; }
  .topbar nav .btn { padding: 6px 8px; font-size: .8rem; }
  .toolbar { padding: 6px 10px; }
  .toolbar .btn { padding: 6px 8px; font-size: .8rem; }
  .toolbar .menu > .btn { padding: 6px 9px; }
  .toolbar .btn .kk { display: none; }
  .tsep { margin: 0 3px; }
  .editor-wrap .pane-head span:last-child { display: none; }
  .statusbar { gap: 10px; font-size: .72rem; }
  .workspace { min-height: 0; }
  .doc { padding-top: 26px; }
}

/* 手机上让工具栏换行，保证「复制到」这个主按钮不用横向滚动也能点到 */
@media (max-width: 760px) {
  .toolbar { flex-wrap: wrap; row-gap: 3px; overflow-x: visible; }
  .toolbar .spacer { flex: 1 1 auto; }
}