:root {
  --primary: #6416A6;       /* 清华紫（与校徽同色） */
  --primary-soft: #f3e8ff;
  --bg: #f4f6f9;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.65 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; }

/* ---- 顶部导航 ---- */
.topbar { background: #fff; border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; }
.topbar-inner {
  max-width: 760px; margin: 0 auto; padding: 10px 16px;
  display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap;
}
.brand { font-weight: 800; font-size: 17px; color: var(--text); display: inline-flex; align-items: center; gap: 8px; }
.brand-logo { width: 26px; height: 26px; display: inline-block; }
.topbar nav { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.topbar nav > a { color: var(--muted); font-weight: 500; font-size: 14px; }
.topbar nav > a:hover { color: var(--primary); }
.user-chip { color: var(--muted); font-size: 13px; }
.user-chip em {
  font-style: normal; background: var(--primary-soft); color: var(--primary);
  border-radius: 4px; padding: 1px 5px; margin-left: 4px; font-size: 12px;
}
.linklike { border: none; background: none; color: var(--muted); cursor: pointer; font: inherit; font-size: 14px; padding: 0; }
.linklike:hover { color: var(--primary); }

/* ---- 布局 ---- */
.container { max-width: 760px; margin: 16px auto 40px; padding: 0 16px; }
.footer { text-align: center; color: #b0b7c3; font-size: 12px; padding: 20px 0 30px; }

.flash { border-radius: 10px; padding: 10px 14px; margin-bottom: 14px; font-size: 14px; }
.flash-success { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.flash-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.flash-info { background: #faf5ff; color: #6b21a8; border: 1px solid #e9d5ff; }

.page-head { display: flex; align-items: center; justify-content: space-between; margin: 6px 0 14px; gap: 10px; }
.page-head h1 { font-size: 20px; margin: 0; }

.tabs { display: flex; gap: 8px; margin-bottom: 14px; }
.tab {
  padding: 5px 14px; border-radius: 999px; background: #fff;
  border: 1px solid var(--border); color: var(--muted); font-size: 14px;
}
.tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ---- 卡片 ---- */
.card {
  display: block; background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 16px; margin-bottom: 12px; color: var(--text);
}
a.card:hover { border-color: #d8b4fe; box-shadow: 0 2px 10px rgba(100, 22, 166, 0.08); }
form.card { display: block; }
.card-title { font-weight: 700; font-size: 16px; line-height: 1.5; }
.pin {
  background: #fef3c7; color: #92400e; font-size: 12px; font-weight: 600;
  border-radius: 4px; padding: 1px 6px; margin-right: 6px; vertical-align: 2px;
}
.excerpt { color: var(--muted); font-size: 14px; margin-top: 6px; }
.meta { color: #9ca3af; font-size: 12px; margin-top: 8px; }
.empty {
  text-align: center; color: var(--muted); padding: 44px 0; background: #fff;
  border: 1px dashed var(--border); border-radius: var(--radius);
}

/* ---- 徽标 ---- */
.badges { margin-top: 6px; display: flex; gap: 6px; flex-wrap: wrap; }
.badge { font-size: 12px; border-radius: 5px; padding: 1px 7px; white-space: nowrap; }
.b-official { background: #dbeafe; color: #1e40af; }
.b-personal { background: #d1fae5; color: #065f46; }
.b-invite { background: #fef3c7; color: #92400e; }
.s-cancelled { background: #fee2e2; color: #991b1b; }
.s-edited { background: #ede9fe; color: #5b21b6; }
.s-confirmed { background: #dcfce7; color: #166534; }
.rsvp-msg { flex: 1; min-width: 180px; margin: 0; padding: 6px 10px; font-size: 13px; }
.notice-card.is-cancelled .card-body { opacity: 0.55; }

/* 有未读修改的通知：红框红标题（本人看过详情页后解除） */
.edit-banner {
  background: #fef2f2; border: 1px solid #fecaca; color: #991b1b;
  border-radius: 10px; padding: 10px 14px; margin-bottom: 14px; font-size: 14px; line-height: 1.6;
}
.edit-banner a { color: #b91c1c; font-weight: 600; text-decoration: underline; }
.notice-card.is-edited-new { border-color: #dc2626; box-shadow: 0 2px 10px rgba(220, 38, 38, 0.10); }
.notice-card.is-edited-new .card-title { color: #b91c1c; }
.notice-card.is-edited-new .badge.s-edited { background: #dc2626; color: #fff; }

/* 字段级改动标红：详情页被改的字段块 + 卡片摘要/截止徽章（本人看过后解除） */
.field-block.field-edited { border-left: 3px solid #dc2626; padding-left: 10px; }
.field-block.field-edited .field-label { color: #b91c1c; }
.excerpt.excerpt-edited { color: #b91c1c; }
.badge.d-edited { background: #dc2626; color: #fff; }
.s-read { background: #f1f5f9; color: #475569; }
.s-party { background: #fee2e2; color: #b91c1c; }
.d-today { background: #fee2e2; color: #b91c1c; font-weight: 600; }
.d-tomorrow { background: #ffedd5; color: #c2410c; font-weight: 600; }
.d-upcoming { background: #f1f5f9; color: #475569; }
.d-overdue { background: #f3f4f6; color: #9ca3af; }
.s-pending { background: #fef9c3; color: #854d0e; }
.s-rejected { background: #fee2e2; color: #991b1b; }
.s-published { background: #d1fae5; color: #065f46; }

/* ---- 按钮 / 表单 ---- */
.btn {
  display: inline-block; border: 1px solid var(--border); background: #fff; color: var(--text);
  border-radius: 8px; padding: 7px 16px; font-size: 14px; cursor: pointer; line-height: 1.5;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { color: #fff; opacity: 0.9; }
.btn-danger { color: #dc2626; border-color: #fecaca; background: #fff; }
.btn-danger:hover { background: #fef2f2; border-color: #dc2626; color: #dc2626; }
.btn-sm { padding: 4px 10px; font-size: 13px; }

form.card label, section.panel label { display: block; font-weight: 600; font-size: 14px; margin: 14px 0 6px; }
input[type="text"], input[type="password"], input[type="email"], input[type="date"],
input[type="time"], input[type="number"], textarea, select {
  width: 100%; padding: 8px 10px; border: 1px solid var(--border);
  border-radius: 8px; font: inherit; background: #fff; color: var(--text);
}
input:disabled { background: #f3f4f6; color: var(--muted); }
input[type="file"] { font-size: 13px; }
textarea { min-height: 140px; resize: vertical; }
.hint { color: var(--muted); font-size: 12px; margin-top: 4px; }
.form-actions { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; }
.inline { display: inline; }
.radio-row { display: flex; gap: 18px; }
.radio-row label { display: flex; align-items: center; gap: 6px; font-weight: 500; margin: 6px 0; cursor: pointer; }
.datetime-row { display: flex; gap: 10px; }
.datetime-row > div { flex: 1; }

/* ---- 详情页 ---- */
.back-link {
  display: inline-block; margin-bottom: 10px; color: var(--muted);
  font-size: 14px; padding: 4px 0;
}
.back-link:hover { color: var(--primary); }
.detail-title { font-size: 19px; margin: 0 0 4px; line-height: 1.5; }
.detail-content { white-space: pre-wrap; word-break: break-word; margin: 14px 0; }
.detail-meta { color: var(--muted); font-size: 13px; margin: 8px 0; }
.row-actions { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; align-items: center; }

/* ---- 管理页 ---- */
section.panel {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; margin-bottom: 18px;
}
section.panel > h2 {
  font-size: 17px; margin: 0 0 12px; padding-bottom: 8px; border-bottom: 1px solid var(--border);
}
h2.sub-h { font-size: 15px; margin: 20px 0 10px; }
.moderate-item { border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; margin-bottom: 10px; }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; font-size: 13px; }
td.wrap { white-space: normal; min-width: 120px; }

/* 小屏幕：允许单元格换行，避免操作按钮被挤出屏幕 */
@media (max-width: 640px) {
  th, td { white-space: normal; padding: 6px 8px; }
  td.wrap { word-break: break-all; min-width: 0; }
  .btn-sm { padding: 3px 8px; font-size: 12px; }
  table { font-size: 13px; }
}

/* ---- 附件预览 ---- */
.attach-img {
  max-width: 100%; max-height: 320px; border-radius: 8px;
  border: 1px solid var(--border); display: block; margin-top: 8px; cursor: zoom-in;
}
.lightbox {
  display: none; position: fixed; inset: 0; background: rgba(15, 23, 42, 0.9);
  z-index: 100; align-items: center; justify-content: center; cursor: zoom-out;
  padding: 24px; flex-direction: column; gap: 12px;
}
.lightbox.open { display: flex; }
.lightbox img { max-width: 100%; max-height: calc(100vh - 80px); border-radius: 8px; }
.lightbox-tip { color: rgba(255, 255, 255, 0.75); font-size: 13px; }
.check-row { display: flex; align-items: center; gap: 8px; font-weight: 500 !important; cursor: pointer; margin: 14px 0 2px !important; }
.check-row input[type="checkbox"] { width: auto; }
.docx-body { line-height: 1.9; margin-top: 12px; }
.docx-body img { max-width: 100%; border-radius: 6px; }
.docx-body table { border-collapse: collapse; margin: 10px 0; }
.docx-body td, .docx-body th { border: 1px solid var(--border); padding: 6px 10px; }
.xlsx-table table { font-size: 13px; margin-top: 10px; }
.pdf-canvas { width: 100%; height: auto; display: block; margin: 12px 0; border: 1px solid var(--border); border-radius: 4px; background: #fff; }
.pdf-pages { margin-top: 10px; }
.attach-list { border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px; margin-bottom: 10px; background: #f8fafc; }
.attach-row { display: flex; align-items: center; gap: 10px; margin: 6px 0; flex-wrap: wrap; }
.attach-name { word-break: break-all; }
.report-box { border-top: 1px solid var(--border); margin-top: 12px; padding-top: 10px; }
.report-toggle { font-size: 13px; color: #dc2626; }
.report-toggle:hover { text-decoration: underline; }
.report-form { margin-top: 8px; }
.report-form textarea { min-height: 90px; }
.cb-unlock {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 90;
  background: #1e293b; color: #fff; padding: 10px 16px;
  display: flex; gap: 10px; align-items: center; justify-content: center; flex-wrap: wrap;
  font-size: 13px; box-shadow: 0 -2px 10px rgba(0,0,0,.2);
}
.cb-unlock input { width: 200px; padding: 6px 10px; border-radius: 6px; border: none; font-size: 13px; }
.cb-cipher { opacity: .85; }

/* ---- 管理页：使用统计 ---- */
.stats-row { display: flex; gap: 12px; flex-wrap: wrap; }
.stat { flex: 1; min-width: 120px; background: #f8fafc; border: 1px solid var(--border); border-radius: 10px; padding: 12px; text-align: center; }
.stat b { display: block; font-size: 24px; color: var(--primary); }
.stat span { font-size: 12px; color: var(--muted); }
.hour-chart { display: flex; align-items: flex-end; gap: 2px; height: 90px; margin-top: 14px; }
.hour-bar-wrap { flex: 1; display: flex; align-items: flex-end; height: 100%; position: relative; }
.hour-bar-wrap:hover { background: #f1f5f9; border-radius: 3px 3px 0 0; }
.hour-bar { width: 100%; border-radius: 2px 2px 0 0; transition: filter 0.1s; }
.hour-bar-wrap:hover .hour-bar { filter: brightness(1.15) saturate(1.2); }
/* 悬浮即时提示：几点~几点 · 次数 */
.hour-bar-wrap::after {
  content: attr(data-tip);
  position: absolute; bottom: calc(100% + 6px); left: 50%; transform: translateX(-50%);
  background: #1e293b; color: #fff; font-size: 12px; line-height: 1.5; white-space: nowrap;
  padding: 4px 10px; border-radius: 6px; pointer-events: none;
  opacity: 0; transition: opacity 0.1s; z-index: 5;
}
.hour-bar-wrap:hover::after { opacity: 1; }
.hour-labels { display: flex; justify-content: space-between; color: var(--muted); font-size: 11px; margin-top: 4px; }

/* ---- Excel 预览：可滚动表格 + 筛选 ---- */
.sheet-toolbar { display: flex; gap: 10px; align-items: center; margin-top: 12px; flex-wrap: wrap; }
.sheet-filter { max-width: 280px; }
.sheet-tabs { display: flex; gap: 6px; flex-wrap: wrap; }
.sheet-tab { padding: 3px 12px; border-radius: 999px; border: 1px solid var(--border); background: #fff; color: var(--muted); font-size: 13px; cursor: pointer; }
.sheet-tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.sheet-view { overflow: auto; max-height: 70vh; border: 1px solid var(--border); border-radius: 8px; margin-top: 10px; }
.sheet-table { border-collapse: collapse; font-size: 13px; }
.sheet-table th, .sheet-table td { border: 1px solid #e2e8f0; padding: 5px 12px; white-space: nowrap; min-width: 64px; text-align: left; }
.sheet-table thead th { position: sticky; top: 0; background: #f1f5f9; font-weight: 600; z-index: 1; }

/* ---- 登录注册 ---- */
.auth-card { max-width: 400px; margin: 32px auto; }
.auth-card h1 { font-size: 20px; margin: 0 0 8px; }
.auth-emblem { display: block; margin: 30px auto 14px; width: 200px; max-width: 72%; height: auto; }

/* ---- 通知板：筛选/排序控制 ---- */
.board-controls { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; font-size: 13px; }
.ctl-label { color: var(--muted); }
.pill {
  padding: 3px 12px; border-radius: 999px; border: 1px solid var(--border);
  background: #fff; color: var(--muted); font-size: 13px;
}
.pill:hover { border-color: var(--primary); color: var(--primary); }
.pill.active { background: #1e293b; border-color: #1e293b; color: #fff; }

/* ---- 通知板：双列布局 ---- */
.board-columns { display: grid; gap: 20px; align-items: start; }
@media (min-width: 700px) {
  .board-columns.two { grid-template-columns: 1fr 1fr; }
}
.board-col > .col-head { display: flex; align-items: baseline; justify-content: space-between; margin: 4px 0 10px; gap: 8px; }
.board-col h2 { font-size: 16px; margin: 0; }
.col-head .count { color: var(--muted); font-size: 12px; white-space: nowrap; }
.empty.small { padding: 22px 0; font-size: 13px; }

/* 活动邀约：双列视图下占满整行，排在两列之后 */
.board-columns.two .board-col-invite { grid-column: 1 / -1; }

/* 发布表单：邀约选人列表 */
.audience-tools { display: flex; align-items: center; gap: 8px; margin: 6px 0 8px; flex-wrap: wrap; }
.audience-tools input[type="text"] { flex: 1; min-width: 120px; max-width: 200px; margin: 0; padding: 5px 10px; font-size: 13px; }
.audience-list {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 2px 10px; max-height: 260px; overflow-y: auto;
  border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px;
}
.audience-item { display: flex; align-items: center; gap: 6px; font-size: 14px; padding: 3px 0; cursor: pointer; white-space: nowrap; }
.audience-item[hidden] { display: none; }
.audience-item input { width: auto; margin: 0; }

/* ---- 卡片 + 完成按钮 ---- */
.notice-card { position: relative; padding: 0; }
.card-body { display: block; padding: 13px 16px; color: var(--text); }
.notice-card:hover { border-color: #d8b4fe; box-shadow: 0 2px 10px rgba(100, 22, 166, 0.08); }
.notice-card .card-title { padding-right: 42px; }
.notice-card .badges { padding-right: 40px; }
.done-form { position: absolute; top: 11px; right: 11px; }
.done-btn {
  width: 68px; height: 27px; border-radius: 999px; border: 1.5px solid #cbd5e1; background: #fff; color: #94a3b8;
  cursor: pointer; font-size: 14px; line-height: 1; padding: 0;
  display: inline-flex; align-items: center; justify-content: center; white-space: nowrap;
}
.done-btn:hover { border-color: #16a34a; color: #16a34a; }
.done-btn.is-done { background: #16a34a; border-color: #16a34a; color: #fff; }
.progress-row { display: flex; align-items: center; gap: 8px; margin-top: 10px; }
.progress-track { flex: 1; height: 6px; background: #e5e7eb; border-radius: 999px; overflow: hidden; }
.progress-fill { height: 100%; background: #22c55e; border-radius: 999px; transition: width 0.2s; }
.progress-num { font-size: 12px; color: var(--muted); white-space: nowrap; }
.card-footer { padding: 0 16px 12px; display: flex; gap: 8px; flex-wrap: wrap; }
.notice-card:has(.card-footer) .card-body { padding-bottom: 6px; }
.go-btn { display: inline-block; margin-top: 8px; }
.detail-content a { word-break: break-all; }
.notice-card.is-done .card-body { opacity: 0.5; }
.notice-card.is-done .card-title { text-decoration: line-through; }
.notice-card .card-title { padding-right: 84px; }
.badge.f-1 { background: #dcfce7; color: #15803d; }
.badge.f-2 { background: #fef9c3; color: #a16207; }
.badge.f-3 { background: #fee2e2; color: #b91c1c; }

/* ---- 详情页：结构化字段 ---- */
.field-block { margin-top: 16px; }
.field-label { font-size: 13px; font-weight: 700; color: var(--muted); margin-bottom: 4px; }
.field-notes .detail-content {
  background: #fffbeb; border: 1px solid #fde68a; border-radius: 8px; padding: 10px 12px; margin: 0;
}

/* ---- 发布页：拖拽上传区 ---- */
.drop-zone {
  border: 2px dashed #cbd5e1; border-radius: 10px; padding: 30px 16px; text-align: center;
  cursor: pointer; color: var(--muted); transition: border-color 0.15s, background 0.15s;
}
.drop-zone:hover, .drop-zone.dz-dragover { border-color: var(--primary); background: #eff6ff; color: var(--primary); }
.drop-zone input[type="file"] { display: none; }
.dz-text { font-size: 14px; line-height: 1.8; }
.dz-file { margin-top: 8px; font-size: 13px; color: #065f46; }

/* ---- 发布页：AI 智能整理 ---- */
.llm-box { background: #f8fafc; border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; margin-bottom: 4px; }
.llm-box textarea { min-height: 90px; background: #fff; }
.rsvp-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 6px; }

.my-task {
  border-top: 1px solid var(--border); margin-top: 14px; padding-top: 12px;
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.btn-done { background: #16a34a; border-color: #16a34a; color: #fff; }
.btn-done:hover { color: #fff; opacity: 0.9; }
.diff-btn.active { background: #1e293b; border-color: #1e293b; color: #fff; }

/* ---- /focus 专注页（三时段看板） ---- */
.focus-lbl { font-size: 12px; color: var(--muted); letter-spacing: .02em; margin: 0 0 10px; font-weight: 600; }

.ddl-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 8px; }
.ddl-item { background: #f8fafc; border: 1px solid var(--border); border-radius: 10px; padding: 9px 11px; }
.ddl-num { font-size: 22px; font-weight: 700; line-height: 1.2; background: none !important; padding: 0; }
.ddl-num span { font-size: 12px; font-weight: 400; color: var(--muted); }
.ddl-num.d-today, .ddl-num.d-overdue { color: #b91c1c; }
.ddl-num.d-tomorrow { color: #c2410c; }
.ddl-num.d-upcoming { color: #15803d; }
.ddl-title { font-size: 13px; line-height: 1.5; margin-top: 2px; }
.ddl-title a { color: var(--text); }
.ddl-when { font-size: 11px; color: var(--muted); }

.focus-slots { display: flex; gap: 8px; flex-wrap: wrap; }
.slot-btn {
  flex: 1; min-width: 150px; padding: 12px 10px; text-align: center; line-height: 1.5;
  background: #fff; border: 1px solid var(--border); border-radius: 10px; cursor: pointer; font: inherit;
}
.slot-btn:hover { border-color: var(--primary); }
.slot-btn b { display: block; font-size: 15px; }
.slot-btn span { font-size: 11.5px; color: var(--muted); }
.slot-btn.on { background: var(--primary); border-color: var(--primary); }
.slot-btn.on b, .slot-btn.on span { color: #fff; }
.focus-subrow {
  display: flex; gap: 6px; flex-wrap: wrap; margin-top: 10px;
  padding-top: 10px; border-top: 1px solid var(--border);
}
.focus-subrow .pill { cursor: pointer; }

.focus-task-title { font-size: 17px; font-weight: 700; line-height: 1.5; }
.focus-task .badges { margin-top: 8px; }
.focus-task-body {
  white-space: pre-wrap; word-break: break-word; font-size: 14px; margin-top: 12px;
  background: #f8fafc; border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px;
}

.note-list { margin-top: 6px; }
.note-row {
  display: flex; gap: 8px; align-items: flex-start; padding: 7px 0;
  border-bottom: 1px solid var(--border); font-size: 13.5px;
}
.note-row:last-child { border-bottom: none; }
.note-when { color: var(--muted); font-size: 12px; white-space: nowrap; flex: none; }
.note-body { flex: 1; word-break: break-word; }

.tag-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; padding: 6px 0; border-bottom: 1px solid var(--border); }
.tag-row:last-child { border-bottom: none; }
.tag-title { flex: 1; min-width: 140px; font-size: 14px; color: var(--text); }
.tag-row select { width: auto; min-width: 104px; padding: 5px 8px; font-size: 13px; }