/* ===================== 文档编辑器 ===================== */
/* 包含：#drawer、.drawer、.d-*（d-head/d-head-actions/d-expand/d-close/d-back/d-body/d-foot/d-tools/d-tool/
   d-foot-drag/d-foot-tools/d-tools-row/d-expand-in-foot/d-save/d-collapse 等）、
   #editor、.editor-*（editor-wrap/editor-active-line/editor-gutter/editor-mirror/editor-search）、
   .ln-container/.ln-gutter、.drawer .preview-box、@keyframes blink 等 */

.drawer{position:fixed;top:0;right:0;height:100%;height:100dvh;width:min(540px,92vw);background:var(--md-surface-container);z-index:46;
  display:flex;flex-direction:column;transform:translateX(102%);transition:transform .3s cubic-bezier(.2,.9,.3,1),width .2s ease;
  border-radius:var(--md-rs-lg) 0 0 var(--md-rs-lg);overflow:hidden;will-change:transform}
.drawer.show{transform:translateX(0)}

.drawer.half{width:75%!important;border-radius:0}

.drawer.fullscreen{width:100%!important;border-radius:0}
.drawer .d-head{display:flex;align-items:center;gap:8px;padding:6px 12px;border-bottom:1px solid var(--md-outline-var)}
.drawer .d-head .d-ic{width:36px;height:36px;border-radius:var(--md-rs-sm);background:var(--md-primary-container);color:var(--md-primary);
  display:grid;place-items:center;flex:none}
.drawer .d-head .d-ic svg{width:18px;height:18px}
.drawer .d-head h2{font-size:15px;flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:600}

.d-head-actions{display:flex;align-items:center;gap:2px;flex:none;background:var(--md-primary-container);border:1px solid var(--md-outline-var);border-radius:var(--md-rs-full);padding:0}
.d-head-actions .d-expand{width:36px;height:36px;border-radius:var(--md-rs-full);background:transparent;color:var(--md-on-primary-container);box-shadow:none}
.d-head-actions .d-expand:hover{background:var(--md-surface-container-highest);color:var(--md-primary);box-shadow:none;transform:none}
.d-head-actions .d-expand:active{background:var(--md-primary);color:var(--md-on-primary);transform:scale(.95)}
.d-head-actions .d-expand:disabled{opacity:.4;box-shadow:none;transform:none}
.d-head-actions .d-expand svg{width:18px;height:18px;transition:transform .15s}
.d-expand{width:38px;height:38px;border:none;border-radius:var(--md-rs-full);background:var(--md-surface-container);color:var(--md-muted);
  display:grid;place-items:center;transition:background .15s,color .15s;flex:none;cursor:pointer}
.d-expand:hover{background:var(--md-surface-container-high);color:var(--md-primary)}
.d-expand:disabled{opacity:.4;cursor:not-allowed;pointer-events:none}
.d-expand:active{background:var(--md-primary-container);color:var(--md-primary)}
.d-expand svg{width:18px;height:18px;transition:transform .2s}
.d-close{width:38px;height:38px;border:none;border-radius:var(--md-rs-full);background:var(--md-surface-container);color:var(--md-muted);
  display:grid;place-items:center;transition:background .15s,color .15s;flex:none;cursor:pointer}
.d-close:hover{background:var(--md-error-container);color:var(--err)}
.d-close:active{background:var(--md-error-container);color:var(--err)}
.d-close svg{width:18px;height:18px}

.d-back{width:38px;height:38px;border:none;border-radius:var(--md-rs-full);background:var(--md-surface-container);color:var(--md-muted);
  display:grid;place-items:center;transition:background .15s,color .15s;flex:none;cursor:pointer}
.d-back:hover{background:var(--md-surface-container-high);color:var(--md-primary)}
.d-back:active{background:var(--md-primary-container);color:var(--md-primary)}
.d-back svg{width:18px;height:18px}

.d-head-spacer{flex:1;min-width:0}
.d-tools{display:flex;align-items:center;gap:6px;padding:8px 16px;border-bottom:1px solid var(--md-outline-var);background:var(--md-surface-container);position:relative;flex-wrap:wrap}
.d-tool{width:38px;height:38px;border:none;border-radius:var(--md-rs-full);background:var(--md-surface-container);color:var(--md-muted);
  display:grid;place-items:center;transition:background .15s,color .15s;flex:none;cursor:pointer}
.d-tool:hover{background:var(--md-surface-container-high);color:var(--md-primary)}
.d-tool.active{background:var(--md-primary-container);color:var(--md-primary)}
.d-tool:active{background:var(--md-primary-container);color:var(--md-primary)}
.d-tool svg{width:18px;height:18px}
.d-tool-sep{width:1px;height:22px;background:var(--md-outline-var);margin:0 4px;flex:none}
.d-body{flex:1;padding:12px 12px;display:flex;flex-direction:column;min-height:0}

.editor-wrap{display:flex;flex:1;min-height:0;position:relative;background:var(--md-surface)}

.editor-active-line{position:absolute;left:0;right:0;background:var(--md-primary-container);opacity:.35;
  pointer-events:none;z-index:0;border-radius:3px;transition:top .08s ease;height:0}

.editor-gutter{
  flex:none;width:42px;overflow:hidden;position:relative;z-index:1;
  font-family:inherit;font-size:14px;line-height:1.75;
  color:var(--md-muted-2);user-select:none;pointer-events:none;
  background:var(--md-surface-container-low);
  border:1px solid var(--md-outline-var);border-right:1px solid var(--md-outline-var);
  border-radius:var(--md-rs-sm) 0 0 var(--md-rs-sm)
}
.ln-container{position:absolute;top:0;left:0;right:0;padding:0 8px 0 0;text-align:right;will-change:transform;display:flex;flex-direction:column}
.ln-container .ln{height:var(--lh,24px);line-height:var(--lh,24px);text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums}

.d-body textarea{flex:1;width:100%;resize:none;border:1px solid var(--md-outline-var);border-left:none;
  border-radius:0;position:relative;z-index:1;
  padding:0;font-size:14px;line-height:1.75;color:var(--ink);outline:none;font-family:inherit;
  background:transparent;transition:color .2s}

.d-body textarea:focus{border-color:var(--md-outline-var);background:transparent}

.editor-search{position:absolute;top:8px;right:12px;z-index:5;display:none;flex-direction:column;gap:4px;
  background:var(--md-surface);border:1px solid var(--md-outline-var);border-radius:var(--md-rs-sm);
  padding:6px;box-shadow:var(--shadow);width:min(420px,calc(100% - 24px));max-width:calc(100% - 24px)}
.editor-search.show{display:flex}
.editor-search-row{display:flex;align-items:center;gap:3px;width:100%}
.editor-search input{flex:1;min-width:0;border:1px solid var(--md-outline-var);outline:none;
  background:var(--md-surface-container-low);font-size:13px;color:var(--ink);padding:6px 9px;
  border-radius:var(--md-rs-xs);transition:border-color .15s,background .15s}
.editor-search input:focus{border-color:var(--md-primary);background:var(--md-surface)}
.editor-search .search-count{font-size:12px;color:var(--md-muted);flex:none;font-variant-numeric:tabular-nums;
  min-width:38px;text-align:center;padding:0 2px}
.editor-search button{width:28px;height:28px;border:none;border-radius:50%;background:transparent;
  color:var(--md-muted);cursor:pointer;display:grid;place-items:center;flex:none;transition:background .15s}
.editor-search button:hover{background:var(--md-surface-container-high);color:var(--md-primary)}
.editor-search button:active{background:var(--md-primary-container)}
.editor-search button svg{width:14px;height:14px}
.editor-search .s-text-btn{width:auto;padding:0 10px;border-radius:var(--md-rs-full);font-size:12px;
  font-weight:500;color:var(--md-muted)}
.editor-search .s-text-btn:hover{color:var(--md-primary)}
/* ===================== 大小写切换按钮 =====================
 * 默认不区分大小写（aria-pressed=false），点击后区分大小写（aria-pressed=true，主题色高亮） */
.editor-search .s-case-btn{width:auto;min-width:30px;padding:0 7px;border-radius:var(--md-rs-xs);
  font-size:12px;font-weight:700;letter-spacing:.5px;color:var(--md-muted)}
.editor-search .s-case-btn:hover{color:var(--md-primary)}
.editor-search .s-case-btn[aria-pressed="true"]{background:var(--md-primary-container);color:var(--md-primary)}
.editor-search .s-case-btn[aria-pressed="true"]:hover{background:var(--md-primary-container);color:var(--md-primary)}

.editor-mirror{position:absolute;left:-99999px;top:0;visibility:hidden;pointer-events:none;
  font-family:inherit;font-size:14px;line-height:1.75;padding:0;
  white-space:pre-wrap;overflow-wrap:break-word;box-sizing:border-box}

#editor{scrollbar-width:none;touch-action:pan-y;will-change:scroll-position}
#editor::-webkit-scrollbar{width:0;height:0;display:none}
.d-foot{display:flex;align-items:center;gap:10px;padding:6px 14px;border-top:1px solid var(--md-outline-var);position:relative;overflow:hidden}

.d-foot::before{content:'';position:absolute;top:0;left:0;bottom:0;width:100%;
  transform:translateZ(0) scaleX(var(--editor-progress,0));transform-origin:left center;
  background:linear-gradient(90deg,var(--md-primary-container),var(--md-secondary));opacity:.35;pointer-events:none;
  will-change:transform;z-index:0}

.d-foot .d-foot-drag{position:absolute;inset:0;z-index:0;cursor:pointer;touch-action:none}
.d-foot>.saved,.d-foot>.char-count,.d-foot>.d-expand-in-foot,.d-foot>.d-save,.d-foot>.d-toggle-tools{position:relative;z-index:1}

.d-foot .saved{font-size:12px;color:var(--muted);flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;pointer-events:none}
.d-foot .char-count{font-size:12px;color:var(--md-muted);flex:none;white-space:nowrap;font-variant-numeric:tabular-nums;letter-spacing:.01em;pointer-events:none}

/* ===================== 底部工具栏：椭圆按钮组合 =====================
 * .d-tools-row 作为容器，内部按钮组/独立按钮之间用 gap 间隔
 * 缩放按钮组(.d-foot-tools)保持椭圆容器;换行/AI 工具为独立椭圆单个按钮(.d-tool-pill)
 * 窄屏时整个 .d-tools-row 横向滑动 */
.d-tools-row{display:flex;align-items:center;gap:10px;padding:0 16px;margin:8px 16px 0;background:transparent;max-height:52px;overflow:hidden;border-radius:0;transition:max-height .25s cubic-bezier(.2,.9,.3,1),margin .25s cubic-bezier(.2,.9,.3,1)}
.d-tools-row.collapsed{max-height:0;margin:0 16px}

/* 椭圆单个按钮:换行/AI 工具按钮 */
.d-tool-pill{display:inline-flex;align-items:center;justify-content:center;gap:5px;height:38px;min-width:38px;padding:0 14px;border:1px solid var(--md-outline-var);border-radius:var(--md-rs-full);
  background:var(--md-surface);color:var(--md-on-surface-variant);cursor:pointer;transition:all .15s;font-family:inherit;font-size:12.5px;font-weight:600;white-space:nowrap;flex:none}
.d-tool-pill svg{width:16px;height:16px;flex:none}
.d-tool-pill:hover{background:var(--md-primary-container);color:var(--md-primary);border-color:var(--md-primary)}
.d-tool-pill.active{background:var(--md-primary-container);color:var(--md-primary);border-color:var(--md-primary)}
.d-tool-pill:active{transform:scale(.96)}

.d-foot-tools{display:flex;align-items:center;gap:0;padding:0;flex:none;border:1px solid var(--md-outline-var);border-radius:var(--md-rs-full);overflow:hidden;background:var(--md-surface)}
.d-foot-tools .d-tool{width:38px;height:38px;border-radius:0;border:none;background:transparent;color:var(--md-on-surface-variant);cursor:pointer;transition:all .15s;display:grid;place-items:center;flex:none}
.d-foot-tools .d-tool:hover{background:var(--md-primary-container);color:var(--md-primary)}
.d-foot-tools .d-tool svg{width:18px;height:18px}
.d-foot-tools .d-tool-text{font-size:12px;min-width:32px}

/* AI 工具容器:内部按钮为椭圆单个按钮,gap 间隔 */
.ai-doc-tools{display:flex;align-items:center;gap:8px;padding:0;flex:none}

/* 展开收起按钮:固定在底部 .d-foot 中 */
.d-toggle-tools{width:32px;height:32px;border:none;border-radius:50%;background:transparent;color:var(--md-muted);cursor:pointer;display:grid;place-items:center;flex:none;transition:all .15s}
.d-toggle-tools:hover{background:var(--md-surface-container-high);color:var(--md-primary)}
.d-toggle-tools svg{width:18px;height:18px;transition:transform .25s cubic-bezier(.2,.9,.3,1)}
.d-toggle-tools.collapsed svg{transform:rotate(180deg)}

.d-save{border:none;border-radius:20px;padding:0 24px;height:40px;font-size:14px;font-weight:600;color:var(--md-on-primary);
  background:var(--grad-primary);transition:all .18s;letter-spacing:.02em;display:inline-flex;align-items:center;box-shadow:var(--shadow-brand);flex:none}
.d-save:hover{background:var(--grad-primary-hover);box-shadow:var(--shadow-brand-hover);transform:translateY(-1px)}
.d-save:disabled{opacity:.5;cursor:not-allowed}

.drawer .preview-box{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:13px;line-height:1.6;color:var(--md-ink);background:var(--md-surface-container-low);
  white-space:pre-wrap;word-break:break-word}

@keyframes blink{50%{opacity:0}}