:root {
  --bg: #f6f8fa;
  --bg-soft: #ffffff;
  --container: #ffffff;
  --container-2: #f6f8fa;
  --border: #d0d7de;
  --border-soft: #e7ecf1;
  --text: #1f2328;
  --text-dim: #57606a;
  --text-faint: #8c959f;
  --accent: #0969da;
  --accent-hover: #0550ae;
  --green: #1a7f37;
  --amber: #9a6700;
  --red: #cf222e;
  --purple: #8250df;
  --cyan: #1b7c83;
  --radius: 10px;
  --shadow: 0 4px 16px rgba(31, 35, 40, 0.08);
  --font: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Inter", sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
}

/* 修复：hidden 属性必须真正隐藏 */
[hidden] { display: none !important; }

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.55;
  min-height: 100vh;
}

/* 顶栏 */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 28px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 38px; height: 38px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--purple));
  display: grid; place-items: center;
  font-weight: 700; color: #fff; letter-spacing: -0.5px;
}
.brand-title { font-size: 16px; font-weight: 700; }
.brand-sub { font-size: 11px; color: var(--text-dim); }

.topbar-actions { display: flex; align-items: center; gap: 12px; }
.search-box {
  display: flex; align-items: center; gap: 8px;
  background: var(--container);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 12px;
  color: var(--text-dim);
}
.search-box input {
  background: transparent; border: none; outline: none;
  color: var(--text); width: 220px; font-size: 13px;
}
.search-box input::placeholder { color: var(--text-faint); }

/* 按钮 */
.btn {
  border: 1px solid var(--border);
  background: var(--container);
  color: var(--text);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
  font-family: var(--font);
  transition: background .15s, border-color .15s, transform .05s;
}
.btn:hover { border-color: var(--accent); background: var(--container-2); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-ghost { background: transparent; }
.btn-danger { color: var(--red); border-color: rgba(207, 34, 46, .4); background: transparent; }
.btn-danger:hover { background: rgba(207, 34, 46, .06); border-color: var(--red); }
.btn-sm { padding: 5px 11px; font-size: 12px; }
.icon-btn {
  background: transparent; border: none; color: var(--text-dim);
  font-size: 16px; cursor: pointer; padding: 4px 8px; border-radius: 6px;
}
.icon-btn:hover { color: var(--text); background: var(--container-2); }

/* 统计 */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  padding: 22px 28px 0;
  max-width: 1440px;
  margin: 0 auto;
}
.stat-card {
  background: var(--container);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
  display: flex; align-items: center; gap: 14px;
}
.stat-icon {
  width: 42px; height: 42px; border-radius: 10px;
  display: grid; place-items: center; flex-shrink: 0;
}
.stat-icon svg { width: 20px; height: 20px; }
.stat-card .stat-label { font-size: 12px; color: var(--text-dim); }
.stat-card .stat-value { font-size: 24px; font-weight: 700; margin-top: 2px; font-family: var(--mono); color: var(--text); }
.stat-card .stat-value small { font-size: 13px; color: var(--text-dim); font-weight: 400; }
.stat-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; }

/* 工具条 */
.toolbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  padding: 18px 28px 0;
  max-width: 1440px;
  margin: 0 auto;
}
.toolbar-right { display: flex; align-items: center; gap: 10px; }
.filter-tabs { display: flex; gap: 6px; }
.tab {
  background: transparent; border: 1px solid transparent; color: var(--text-dim);
  padding: 7px 14px; border-radius: 8px; cursor: pointer; font-size: 13px; font-family: var(--font);
}
.tab:hover { color: var(--text); }
.tab.active { background: var(--container); border-color: var(--border); color: var(--text); font-weight: 600; box-shadow: var(--shadow); }

.select {
  background: var(--container); border: 1px solid var(--border); color: var(--text);
  padding: 7px 12px; border-radius: 8px; font-size: 13px; font-family: var(--font); outline: none;
  cursor: pointer;
}

/* 视图切换 */
.view-toggle { display: flex; background: var(--container-2); border: 1px solid var(--border); border-radius: 8px; padding: 3px; }
.vt {
  border: none; background: transparent; color: var(--text-dim);
  padding: 5px 14px; border-radius: 6px; cursor: pointer; font-size: 13px; font-family: var(--font);
}
.vt.active { background: var(--container); color: var(--text); font-weight: 600; box-shadow: 0 1px 3px rgba(31,35,40,.12); }

/* 卡片网格 */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 14px;
  padding: 18px 28px 40px;
  max-width: 1440px;
  margin: 0 auto;
}
.card {
  background: var(--container);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 16px 18px;
  cursor: pointer;
  transition: border-color .15s, transform .12s, box-shadow .15s;
  display: flex; flex-direction: column; gap: 10px;
  box-shadow: var(--shadow);
  position: relative;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(31, 35, 40, 0.12); }
.card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
.card-head-left { flex: 1; min-width: 0; }
.card-head-right { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.card-title { font-size: 15px; font-weight: 650; line-height: 1.35; }
.card-cat { font-size: 11px; color: var(--text-dim); margin-top: 4px; display: flex; align-items: center; gap: 5px; }
.cat-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; flex-shrink: 0; }

.card-edit {
  border: none; background: transparent; color: var(--text-faint);
  cursor: pointer; font-size: 14px; padding: 2px 5px; border-radius: 5px;
  opacity: 0; transition: opacity .15s, color .15s, background .15s;
}
.card:hover .card-edit { opacity: 1; }
.card-edit:hover { color: var(--accent); background: var(--container-2); }

.badge {
  font-size: 11px; padding: 3px 9px; border-radius: 20px; font-weight: 600; white-space: nowrap;
}
.badge-planning { background: rgba(87, 96, 106, .12); color: var(--text-dim); }
.badge-in_progress { background: rgba(9, 105, 218, .12); color: var(--accent); }
.badge-paused { background: rgba(154, 103, 0, .12); color: var(--amber); }
.badge-completed { background: rgba(26, 127, 55, .12); color: var(--green); }

.card-goal { font-size: 12.5px; color: var(--text-dim); }
.progress { display: flex; align-items: center; gap: 10px; }
.progress-bar { flex: 1; height: 6px; border-radius: 4px; background: var(--border-soft); overflow: hidden; }
.progress-fill { height: 100%; border-radius: 4px; transition: width .3s; }
.progress-num { font-family: var(--mono); font-size: 12px; color: var(--text-dim); min-width: 34px; text-align: right; }
.card-foot { display: flex; align-items: center; gap: 12px; font-size: 11.5px; color: var(--text-faint); }
.card-foot .ms { display: flex; align-items: center; gap: 5px; color: var(--text-dim); }
.card-foot .ms svg { color: var(--accent); }

/* 看板视图 */
.board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  padding: 18px 28px 40px;
  max-width: 1440px;
  margin: 0 auto;
  align-items: start;
}
.board-col {
  background: var(--container-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex; flex-direction: column;
  min-height: 300px;
}
.board-col-head {
  padding: 12px 14px;
  font-weight: 650;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 7px;
  background: var(--container);
  border-radius: 12px 12px 0 0;
}
.board-col-head .count {
  margin-left: auto; font-size: 12px; color: var(--text-dim);
  background: var(--container-2); border-radius: 10px; padding: 1px 9px; font-family: var(--mono);
}
.board-col-body {
  padding: 10px;
  display: flex; flex-direction: column; gap: 8px;
  flex: 1;
  transition: background .15s;
}
.board-col-body.drag-over { background: rgba(9, 105, 218, .07); box-shadow: inset 0 0 0 2px var(--accent); border-radius: 0 0 12px 12px; }
.board-col-body.empty::after {
  content: "拖拽卡片到这里";
  display: block; text-align: center; color: var(--text-faint); font-size: 12px; padding: 20px 0;
}
.board-card {
  background: var(--container);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 10px 12px;
  cursor: grab;
  box-shadow: 0 1px 4px rgba(31,35,40,.06);
  transition: box-shadow .15s, transform .1s;
}
.board-card:hover { box-shadow: 0 4px 12px rgba(31,35,40,.12); }
.board-card:active { cursor: grabbing; }
.board-card.dragging { opacity: .4; }
.board-card .bc-title { font-size: 13px; font-weight: 600; line-height: 1.35; }
.board-card .bc-meta { display: flex; align-items: center; gap: 8px; margin-top: 7px; font-size: 11px; color: var(--text-dim); }
.board-card .bc-progress { flex: 1; height: 4px; border-radius: 3px; background: var(--border-soft); overflow: hidden; }
.board-card .bc-progress > span { display: block; height: 100%; border-radius: 3px; }

/* 空状态 */
.empty { text-align: center; color: var(--text-dim); padding: 80px 20px; }
.empty-icon { width: 48px; height: 48px; margin: 0 auto 12px; color: var(--border); }
.empty-sub { font-size: 12px; color: var(--text-faint); margin-top: 6px; }

/* 页脚提示 */
.hint {
  text-align: center; color: var(--text-faint); font-size: 12px;
  padding: 0 20px 32px;
}
.hint kbd {
  background: var(--container); border: 1px solid var(--border);
  border-bottom-width: 2px; border-radius: 5px; padding: 1px 6px;
  font-family: var(--mono); font-size: 11px; color: var(--text-dim);
}

/* 弹窗 */
.modal-mask {
  position: fixed; inset: 0; background: rgba(31, 35, 40, 0.4);
  display: grid; place-items: center; z-index: 100; padding: 20px;
}
.modal {
  background: var(--container);
  border: 1px solid var(--border);
  border-radius: 14px;
  width: 100%; max-width: 560px;
  max-height: 88vh; overflow-y: auto;
  padding: 22px 24px;
  box-shadow: 0 16px 48px rgba(31, 35, 40, 0.2);
}
.modal-wide { max-width: 680px; }
.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 18px; gap: 12px;
}
.modal-head h2 { font-size: 17px; }
.modal-head-actions { display: flex; align-items: center; gap: 8px; }

.form-row { margin-bottom: 14px; }
.form-row label { display: block; font-size: 12.5px; color: var(--text-dim); margin-bottom: 6px; }
.form-row label i { color: var(--red); font-style: normal; }
.form-row input, .form-row textarea, .form-row select {
  width: 100%; background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: 8px; padding: 9px 12px; color: var(--text); font-size: 13px;
  font-family: var(--font); outline: none; resize: vertical;
}
.form-row input:focus, .form-row textarea:focus, .form-row select:focus { border-color: var(--accent); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.milestone-item {
  display: flex; align-items: center; gap: 8px; margin-bottom: 8px;
}
.milestone-item input[type="text"] { flex: 1; }
.milestone-item .done-toggle {
  width: 18px; height: 18px; cursor: pointer; accent-color: var(--accent);
}
.milestone-item .rm { color: var(--text-faint); cursor: pointer; }
.milestone-item .rm:hover { color: var(--red); }

.modal-foot { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }

/* 详情 */
.detail-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.detail-meta .chip {
  font-size: 12px; background: var(--container-2); border: 1px solid var(--border);
  padding: 4px 10px; border-radius: 6px; color: var(--text-dim);
}
.detail-meta .chip a { color: var(--accent); text-decoration: none; }
.detail-section { margin-bottom: 18px; }
.detail-section h3 {
  font-size: 12px; color: var(--text-faint); text-transform: uppercase;
  letter-spacing: .4px; margin-bottom: 8px;
}
.detail-section p { font-size: 13.5px; color: var(--text); white-space: pre-wrap; }
.detail-section p.muted { color: var(--text-dim); }

.milestone-row {
  display: flex; align-items: center; gap: 10px; padding: 8px 10px;
  border: 1px solid var(--border-soft); border-radius: 8px; margin-bottom: 7px;
  background: var(--bg-soft);
}
.milestone-row input[type="checkbox"] { width: 17px; height: 17px; cursor: pointer; accent-color: var(--green); flex-shrink: 0; }
.milestone-row .m-title { flex: 1; font-size: 13.5px; }
.milestone-row .m-title.done { text-decoration: line-through; color: var(--text-faint); }

.detail-foot { display: flex; justify-content: space-between; align-items: center; margin-top: 8px; }
.detail-time { font-size: 11.5px; color: var(--text-faint); font-family: var(--mono); }

/* Toast */
#toastWrap {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; gap: 8px; z-index: 200;
}
.toast {
  background: #1f2328; color: #fff; padding: 9px 18px; border-radius: 8px;
  font-size: 13px; opacity: 0; transform: translateY(8px);
  transition: opacity .25s, transform .25s;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}
.toast.show { opacity: 1; transform: translateY(0); }

@media (max-width: 960px) {
  .board { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
  .topbar { flex-direction: column; align-items: stretch; }
  .search-box input { width: 100%; }
  .board { grid-template-columns: 1fr; }
}

/* ---------- 加载失败提示（避免白屏） ---------- */
.load-error {
  margin: 14px 0 0;
  padding: 12px 16px; border-radius: 10px;
  background: #ffebe9; border: 1px solid #ffcecb; color: #a40e26;
  font-size: 13.5px; font-weight: 600;
}

/* ---------- 只读模式（未授权设备） ---------- */
.mode-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 11px; border-radius: 8px;
  background: #fff8c5; border: 1px solid #e6d78a; color: #7d4e00;
  font-size: 12.5px; font-weight: 600; white-space: nowrap;
}
.mode-badge svg { flex-shrink: 0; }

/* 卡片上的快捷编辑按钮：必须在 hover 规则之后并提高优先级 */
body.readonly .card .card-edit { display: none !important; }

/* 看板卡片不可拖拽 */
body.readonly .board-card { cursor: default; }
body.readonly .board-card:active { cursor: default; }
body.readonly .board-col-body.empty::after { content: "暂无项目"; }

/* 里程碑只读 */
body.readonly .milestone-row input[type="checkbox"] { cursor: not-allowed; opacity: .55; }

.readonly-note {
  font-size: 11.5px; color: var(--text-faint);
  background: var(--container-2); border: 1px solid var(--border);
  padding: 3px 10px; border-radius: 6px;
}