:root {
  --sidebar-width: 220px;
  --bg: #f6f7fb;
  --card-bg: #fff;
  --border: #e5e7eb;
  --text: #111827;
  --muted: #6b7280;
  --primary: #3b82f6;
  --danger: #ef4444;
  --success: #10b981;
  --warning: #f59e0b;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Microsoft YaHei", sans-serif; background: var(--bg); color: var(--text); }
.app { display: flex; min-height: 100vh; }
.sidebar { width: var(--sidebar-width); background: #111827; color: #fff; padding: 16px; }
.sidebar h2 { margin-top: 0; font-size: 18px; }
.menu { list-style: none; padding: 0; margin: 0; }
.menu li { padding: 10px 12px; border-radius: 8px; cursor: pointer; }
.menu li.active, .menu li:hover { background: #374151; }
.main { flex: 1; padding: 16px; }
.header { display: flex; align-items: center; gap: 8px; justify-content: space-between; margin-bottom: 12px; }
.header-right { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
.header-left { display: flex; align-items: center; gap: 8px; }
.status-board { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.column { background: var(--card-bg); border: 1px solid var(--border); border-radius: 10px; padding: 10px; }
.column.drag-over { border-color: var(--primary); box-shadow: inset 0 0 0 2px rgba(59,130,246,0.15); background: #f8fbff; }
.column h3 { margin: 0 0 8px; font-size: 16px; }
.column .count { color: var(--muted); font-size: 12px; }
.project { background: #fff; border: 1px solid var(--border); border-radius: 8px; padding: 8px; margin-bottom: 8px; display: flex; justify-content: space-between; align-items: center; gap: 6px; }
.project.dragging { opacity: 0.6; }
.project .title { font-weight: 600; cursor: pointer; }
.project .actions { display: flex; gap: 6px; }
.btn { padding: 6px 10px; border: 1px solid var(--border); background: #fff; border-radius: 6px; cursor: pointer; font-size: 13px; }
.btn:hover { background:#f8fafc; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
a.btn, a.btn:link, a.btn:visited { color: var(--text); text-decoration: none; display:inline-flex; align-items:center; gap:6px; }
a.btn:hover { text-decoration: none; border-color: var(--primary); box-shadow: 0 2px 10px rgba(59,130,246,0.15); }
.btn.back-btn { position: relative; }
.btn.back-btn::before { content: "←"; color: var(--primary); margin-right: 6px; font-weight: 600; }

/* 顶部操作区：让重命名输入框更长 */
.project-actions { display:flex; gap:8px; align-items:center; margin-bottom:8px; flex-wrap: wrap; }
.project-actions #renameProjectInput { flex: 1; min-width: 380px; }

/* 提醒横幅 */
.remind-banner { display:flex; align-items:flex-start; gap:8px; background:#fff8db; border:1px solid #fde68a; color:#6b4e16; padding:8px 10px; border-radius:8px; font-size:13px; }
.remind-banner::before { content:"⚠"; font-weight:700; color:#b45309; }
.remind-banner .muted { color:#8b6b22; }
.btn.primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn.danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn.outline { background: #fff; color: var(--text); }
.input { padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; }
.select { padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; background: #fff; }
.footer { margin-top: 12px; color: var(--muted); font-size: 12px; }
.chart-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 10px; padding: 12px; margin-bottom: 12px; }
.chart-title { display:flex; align-items:center; justify-content:space-between; margin:0 0 8px; font-size:16px; }
.chart-msg { color: var(--muted); font-size: 12px; margin-top: 6px; }
.chart-container { position: relative; height: 240px; width: 100%; }
#monthlyChart { width: 100%; height: 100%; display: block; }

/* 导出管理 */
.export-item { display:flex; justify-content:space-between; align-items:center; padding:8px; border:1px solid var(--border); border-radius:8px; background:#fff; margin-bottom:8px; }
.export-info { font-size: 13px; color: var(--text); }
.export-actions { display:flex; gap:8px; }

/* 模态框 */
.modal-mask { position: fixed; inset: 0; background: rgba(0,0,0,0.4); display: none; align-items: center; justify-content: center; }
.modal { width: 640px; max-width: 92vw; background: #fff; border-radius: 10px; border: 1px solid var(--border); }
.modal-header { padding: 10px 12px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.modal-body { padding: 12px; max-height: 68vh; overflow-y: auto; }
.modal-footer { padding: 10px 12px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 8px; }
.note { border: 1px dashed var(--border); border-radius: 8px; padding: 8px; margin: 8px 0; }
.note .meta { color: var(--muted); font-size: 12px; }
.hidden { display: none; }

/* 小工具类 */
.muted-small { color: var(--muted); font-size: 12px; }
.muted { color: var(--muted); }
.ml-8 { margin-left: 8px; }
.notes-title { margin: 6px 0; }
.notes-add-bar { display:flex; gap:8px; align-items:center; margin-top:8px; }
.notes-add-bar textarea#newNoteInput { flex: 1; min-height: 120px; padding: 10px; font-size: 14px; line-height: 1.6; resize: vertical; }

/* 笔记内容预览（支持图片） */
.note-preview { margin-top: 6px; color: var(--muted); font-size: 13px; max-height: 280px; overflow: auto; padding: 6px; background: #fafafa; border: 1px solid var(--border); border-radius: 6px; }
.note-preview img { max-width: 100%; max-height: 240px; object-fit: contain; border-radius: 6px; margin-top: 6px; display: block; cursor: zoom-in; }
.note-preview a { color: var(--primary); text-decoration: none; word-break: break-all; }
.note-preview a:hover { text-decoration: underline; }

/* 评论气泡样式（预览在上方，编辑框在下方） */
.note-bubble { position: relative; background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 10px 12px; box-shadow: 0 4px 12px rgba(0,0,0,0.04); margin-bottom: 8px; }
.note-bubble::after { content: ""; position: absolute; left: 16px; top: -6px; width: 12px; height: 12px; background: #fff; border-left: 1px solid var(--border); border-top: 1px solid var(--border); transform: rotate(45deg); }
.note-bubble img { max-width: 100%; border-radius: 8px; margin-top: 6px; }

/* Git 风格的笔记卡片 */
.note-git { background:#f9fafb; border:1px solid var(--border); border-left:4px solid #1f2937; border-radius:8px; margin:10px 0; box-shadow:0 2px 6px rgba(0,0,0,0.02); }
.note-git-header { display:flex; align-items:center; gap:10px; color:var(--muted); font-size:12px; padding:8px 12px; border-bottom:1px dashed var(--border); }
.note-git-title { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; font-weight:600; color:var(--text); cursor:pointer; }
.note-git-title:hover { text-decoration: underline; }
.note-git-time { margin-left:auto; color:var(--muted); }
.note-git-body { padding:12px; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; white-space: pre-wrap; word-break: break-word; }
.note-git-body img { max-width:100%; max-height: clamp(220px, 48vh, 420px); object-fit: contain; border-radius:6px; margin:6px 0; display:block; cursor: zoom-in; }

/* 笔记卡片（头像+用户名+时间+操作） */
.note-card { background:#fff; border:1px solid var(--border); border-radius:12px; padding:12px; margin:10px 0; box-shadow:0 2px 8px rgba(0,0,0,0.04); }
.note-header { display:flex; align-items:center; justify-content:space-between; margin-bottom:8px; }
.note-user { display:flex; align-items:center; gap:10px; }
.note-avatar { width:32px; height:32px; border-radius:50%; background:#e5e7eb; color:#374151; display:flex; align-items:center; justify-content:center; font-weight:600; }
.note-username { font-weight:600; }
.note-time { color:var(--muted); font-size:12px; }
.note-comment-btn { border:none; background:transparent; color:var(--muted); cursor:pointer; padding:4px 8px; border-radius:6px; }
.note-comment-btn:hover { background:#f3f4f6; color:var(--text); }
.note-footer { display:flex; align-items:center; justify-content:flex-end; margin-top:8px; }
.note-actions-left { display:flex; gap:14px; color:var(--muted); font-size:13px; }
.note-actions-left .action { cursor:pointer; user-select:none; }
.note-actions-left .action:hover { color:var(--text); }
.note-actions-right { display:flex; gap:8px; }

/* 图片浮窗（Lightbox） */
.img-lightbox-mask { position: fixed; inset: 0; background: rgba(0,0,0,0.6); display: none; align-items: center; justify-content: center; z-index: 10000; }
.img-lightbox-content { position: relative; max-width: 92vw; max-height: 92vh; }
.img-lightbox-content img { max-width: 92vw; max-height: 92vh; border-radius: 8px; box-shadow: 0 12px 30px rgba(0,0,0,0.35); background: #fff; }
.img-lightbox-close { position: absolute; top: -10px; right: -10px; width: 28px; height: 28px; border-radius: 50%; border: 1px solid var(--border); background: #fff; color: var(--text); cursor: pointer; box-shadow: 0 2px 6px rgba(0,0,0,0.2); }

/* 自适应/响应式：根据视口宽度优化布局，在浏览器缩放时也能更好适配 */
@media (max-width: 1280px) {
  .status-board { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 960px) {
  .app { display: block; }
  .main { padding: 12px; }
  .status-board { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .column { padding: 8px; }
  .chart-container { height: clamp(180px, 28vh, 240px); }
  .note-preview { max-height: clamp(200px, 34vh, 280px); }
}
@media (max-width: 640px) {
  .header { flex-wrap: wrap; gap: 6px; }
  .header-right { width: 100%; justify-content: flex-start; gap: 6px; }
  .status-board { grid-template-columns: 1fr; }
  .chart-container { height: clamp(160px, 32vh, 220px); }
  .modal { width: 100%; max-width: 96vw; }
  .note-preview img { max-height: 200px; }
}