:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1f2329;
  --muted: #8a9099;
  --line: #e6e8eb;
  --primary: #2f6fed;
  --primary-dark: #2559c9;
  --danger: #e5484d;
  --ok: #159f5c;
  --warn: #d97706;
  --radius: 12px;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.wrap { max-width: 960px; margin: 0 auto; padding: 16px; }

.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}
.topbar-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand { font-weight: 500; font-size: 16px; }
.topbar .spacer { flex: 1; }
.who { color: var(--muted); font-size: 13px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}

h1 { font-size: 18px; font-weight: 500; margin: 0 0 4px; }
h2 { font-size: 16px; font-weight: 500; margin: 0 0 12px; }
h3 { font-size: 14px; font-weight: 500; margin: 16px 0 8px; }
.sub { color: var(--muted); font-size: 13px; margin: 0 0 16px; }

label { display: block; font-size: 13px; color: var(--muted); margin: 12px 0 4px; }

input[type="text"], input[type="password"], input[type="number"],
input[type="datetime-local"], textarea, select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary);
}
textarea { min-height: 72px; resize: vertical; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--primary);
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn.block { width: 100%; }
.btn.ghost { background: #fff; color: var(--text); border-color: var(--line); }
.btn.ghost:hover { background: #f2f4f7; }
.btn.danger { background: #fff; color: var(--danger); border-color: #f3c6c7; }
.btn.danger:hover { background: #fdf2f2; }
.btn.sm { padding: 6px 10px; font-size: 13px; }

.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row > * { flex: 1 1 200px; }

.tabs { display: flex; gap: 4px; background: #eef0f3; padding: 4px; border-radius: 10px; margin-bottom: 16px; }
.tabs button {
  flex: 1;
  padding: 8px 10px;
  border: none;
  background: transparent;
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  cursor: pointer;
}
.tabs button.active { background: #fff; font-weight: 500; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 400; font-size: 13px; white-space: nowrap; }
tbody tr:last-child td { border-bottom: none; }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

.tag { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; }
.tag.ok { background: #e8f7ef; color: var(--ok); }
.tag.no { background: #fdecec; color: var(--danger); }
.tag.warn { background: #fdf4e3; color: var(--warn); }
.tag.info { background: #eaf1fe; color: var(--primary); }
.tag.gray { background: #f1f2f4; color: var(--muted); }

.empty { text-align: center; color: var(--muted); padding: 32px 0; font-size: 14px; }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 12px; }
.stat { background: #fafbfc; border: 1px solid var(--line); border-radius: 10px; padding: 12px; }
.stat .num { font-size: 22px; font-weight: 500; }
.stat .lbl { font-size: 12px; color: var(--muted); }

.list-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.list-item:last-child { border-bottom: none; }
.list-item .grow { flex: 1; min-width: 0; }
.list-item .title { font-size: 15px; margin-bottom: 2px; }
.meta { font-size: 13px; color: var(--muted); line-height: 1.6; }

/* 操作按钮组：宽屏靠右，且不参与主轴压缩 —— 否则会把内容列挤成细柱 */
.list-actions { display: flex; gap: 8px; flex-shrink: 0; }
.list-actions .btn { white-space: nowrap; }

/* 不希望被拆开的片段（日期区间、时间点）—— 连字符是合法断点，日期会被拦腰截断 */
.nb { white-space: nowrap; }

/* 列表项在窄屏改为「内容在上、操作在下」的卡片式布局 */
@media (max-width: 640px) {
  .list-item {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding: 16px 0;
  }
  .list-actions { width: 100%; gap: 8px; }
  .list-actions .btn {
    flex: 1 1 0;
    min-width: 0;
    min-height: 44px;   /* 触控目标下限 */
    padding: 0 8px;
    font-size: 13px;
  }
}

.photos { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.photos a, .photos span.ph {
  display: block;
  width: 72px;
  height: 72px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #f2f4f7;
}
.photos img { width: 100%; height: 100%; object-fit: cover; display: block; }

.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(15, 18, 22, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 50;
}
.modal {
  background: #fff;
  border-radius: var(--radius);
  padding: 20px;
  width: 100%;
  max-width: 480px;
  max-height: 86vh;
  overflow-y: auto;
}
.modal h2 { margin-bottom: 8px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 20px; }

.alert { padding: 10px 12px; border-radius: 8px; font-size: 14px; margin: 12px 0; }
.alert.err { background: #fdecec; color: var(--danger); }
.alert.ok { background: #e8f7ef; color: var(--ok); }
.alert.info { background: #eaf1fe; color: var(--primary); }

.hidden { display: none !important; }

.checkline { display: flex; align-items: center; gap: 8px; padding: 6px 0; font-size: 14px; }
.checkline input { width: auto; }

.file-drop {
  border: 1px dashed #c9ced6;
  border-radius: 10px;
  padding: 16px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  cursor: pointer;
}
.file-drop:hover { border-color: var(--primary); color: var(--primary); }

.preview-grid { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.preview-grid .ph { width: 72px; height: 72px; border-radius: 8px; overflow: hidden; border: 1px solid var(--line); }
.preview-grid img { width: 100%; height: 100%; object-fit: cover; }

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.82);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99;
  cursor: zoom-out;
}
.lightbox img { max-width: 94vw; max-height: 92vh; object-fit: contain; }

.ph { cursor: zoom-in; }

.searchbar { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 12px; }
.searchbar input { flex: 1 1 180px; }
.searchbar select { flex: 0 0 auto; width: auto; }

.bulkbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 10px; }

.btn.danger-solid { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn.danger-solid:hover { background: #cf3d42; border-color: #cf3d42; }

.dlg-body { font-size: 14px; line-height: 1.7; white-space: pre-wrap; word-break: break-word; }

.chips { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.chip {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
}
.chip:hover { border-color: var(--primary); color: var(--primary); }
.chip.on { background: #eaf1fe; border-color: var(--primary); color: var(--primary); }

/* 学号构成拆解 */
.no-breakdown { display: flex; gap: 6px; flex-wrap: wrap; }
.no-breakdown .seg {
  padding: 5px 12px;
  border-radius: 6px;
  background: #eef2f7;
  color: var(--text);
  font-family: ui-monospace, Consolas, "Courier New", monospace;
  font-size: 18px;
  letter-spacing: 1.5px;
}
.no-breakdown .seg-school { background: #eaf1fe; color: var(--primary); font-weight: 600; }
.no-breakdown .seg-auto {
  background: #fff;
  border: 1px dashed var(--primary);
  color: var(--primary);
  font-weight: 600;
}
.no-legend {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 18px;
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--muted);
}
.no-legend b { color: var(--text); }

@media (max-width: 480px) {
  body { font-size: 14px; }
  .wrap { padding: 12px; }
  .card { padding: 14px; }
  .modal { padding: 16px; }
}