/* 教研员一体化工作台 - 共享样式 */
:root {
  --bg: #f4f6fa;
  --card: #ffffff;
  --line: #e6e9f0;
  --primary: #2f6fed;
  --primary-dark: #245bd0;
  --primary-soft: #eaf1ff;
  --text: #1f2430;
  --muted: #7a8199;
  --green: #16a34a;
  --green-soft: #e7f7ee;
  --orange: #d97706;
  --orange-soft: #fdf3e3;
  --red: #dc2626;
  --red-soft: #fdeaea;
  --violet: #7c3aed;
  --violet-soft: #f1e9fe;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(31, 36, 48, .06), 0 4px 16px rgba(31, 36, 48, .05);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
  background: var(--bg); color: var(--text); font-size: 14px;
}

/* ===== 布局：侧边栏 + 主区 ===== */
.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 216px; background: #1c2333; color: #cdd3e1; flex-shrink: 0;
  display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh;
}
.sidebar .logo { padding: 20px 18px 14px; border-bottom: 1px solid rgba(255,255,255,.08); }
.sidebar .logo b { display: block; color: #fff; font-size: 16px; letter-spacing: 1px; }
.sidebar .logo span { font-size: 12px; color: #8a93a8; }
.sidebar nav { padding: 10px 10px; flex: 1; overflow-y: auto; }
.sidebar nav a {
  display: flex; align-items: center; gap: 10px; padding: 10px 12px; margin: 2px 0;
  color: #cdd3e1; text-decoration: none; border-radius: 8px; font-size: 14px;
}
.sidebar nav a:hover { background: rgba(255,255,255,.06); color: #fff; }
.sidebar nav a.active { background: var(--primary); color: #fff; font-weight: 600; }
.sidebar .foot { padding: 12px 18px; font-size: 12px; color: #6b7489; border-top: 1px solid rgba(255,255,255,.08); }
.main { flex: 1; min-width: 0; padding: 22px 26px 40px; }
.page-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; flex-wrap: wrap; gap: 10px; }
.page-head h1 { font-size: 20px; }
.page-head .sub { color: var(--muted); font-size: 13px; margin-top: 4px; }

/* ===== 组件 ===== */
.card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px 20px; }
.card + .card, .mt { margin-top: 16px; }
.card h2 { font-size: 15px; margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.grid { display: grid; gap: 16px; }
.grid.cols4 { grid-template-columns: repeat(4, 1fr); }
.grid.cols3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 1100px) { .grid.cols4 { grid-template-columns: repeat(2, 1fr); } .grid.cols3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 760px) { .grid.cols4, .grid.cols3, .grid.cols2 { grid-template-columns: 1fr; } .sidebar { display: none; } }

.stat { display: flex; gap: 14px; align-items: center; }
.stat .ico { width: 44px; height: 44px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 20px; }
.stat .num { font-size: 24px; font-weight: 700; line-height: 1.1; }
.stat .lab { color: var(--muted); font-size: 12px; margin-top: 2px; }

table.tbl { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.tbl th { text-align: left; color: var(--muted); font-weight: 600; padding: 8px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
.tbl td { padding: 9px 10px; border-bottom: 1px solid #f0f2f7; vertical-align: middle; }
.tbl tr:hover td { background: #f8faff; }
.tbl .ops { white-space: nowrap; text-align: right; }

.btn {
  display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line); background: #fff;
  color: var(--text); border-radius: 8px; padding: 7px 14px; font-size: 13px; cursor: pointer; transition: .15s;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
.btn.primary:hover { background: var(--primary-dark); color: #fff; }
.btn.small { padding: 4px 10px; font-size: 12px; border-radius: 6px; }
.btn.danger { color: var(--red); }
.btn.danger:hover { border-color: var(--red); background: var(--red-soft); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.link { color: var(--primary); cursor: pointer; text-decoration: none; }
.link:hover { text-decoration: underline; }

input[type=text], input[type=date], input[type=time], input[type=number], select, textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px;
  font-size: 13.5px; font-family: inherit; background: #fff; color: var(--text);
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(47,111,237,.12); }
textarea { resize: vertical; min-height: 70px; }
.form { display: grid; gap: 12px; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form .row3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
.form label { font-size: 12.5px; color: var(--muted); display: block; margin-bottom: 4px; }
.form .full { grid-column: 1 / -1; }
@media (max-width: 760px) { .form .row, .form .row3 { grid-template-columns: 1fr; } }

.badge { display: inline-block; padding: 2px 9px; border-radius: 20px; font-size: 12px; line-height: 1.6; }
.badge.blue { background: var(--primary-soft); color: var(--primary); }
.badge.green { background: var(--green-soft); color: var(--green); }
.badge.orange { background: var(--orange-soft); color: var(--orange); }
.badge.red { background: var(--red-soft); color: var(--red); }
.badge.violet { background: var(--violet-soft); color: var(--violet); }
.badge.gray { background: #eef0f5; color: var(--muted); }

.empty { text-align: center; color: var(--muted); padding: 36px 0; font-size: 13px; }

/* 模态框 */
.mask { position: fixed; inset: 0; background: rgba(15, 20, 34, .45); display: flex; align-items: flex-start; justify-content: center; z-index: 50; padding: 40px 16px; overflow-y: auto; }
.modal { background: #fff; border-radius: 14px; width: 680px; max-width: 100%; box-shadow: 0 20px 60px rgba(0,0,0,.25); }
.modal.wide { width: 880px; }
.modal .m-head { display: flex; justify-content: space-between; align-items: center; padding: 16px 20px; border-bottom: 1px solid var(--line); }
.modal .m-head b { font-size: 15px; }
.modal .m-close { cursor: pointer; color: var(--muted); font-size: 18px; border: 0; background: none; }
.modal .m-body { padding: 18px 20px; max-height: 68vh; overflow-y: auto; }
.modal .m-foot { padding: 14px 20px; border-top: 1px solid var(--line); display: flex; justify-content: flex-end; gap: 10px; }

/* Toast */
#toast { position: fixed; top: 22px; left: 50%; transform: translateX(-50%); z-index: 99; display: flex; flex-direction: column; gap: 8px; align-items: center; }
#toast div { background: #23293a; color: #fff; padding: 9px 18px; border-radius: 8px; font-size: 13px; box-shadow: var(--shadow); }
#toast div.err { background: #b91c1c; }
#toast div.ok { background: #15803d; }

/* 时间轴 */
.tl { position: relative; padding-left: 18px; }
.tl::before { content: ''; position: absolute; left: 4px; top: 6px; bottom: 6px; width: 2px; background: var(--line); }
.tl .tl-item { position: relative; padding: 0 0 14px 12px; }
.tl .tl-item::before { content: ''; position: absolute; left: -18px; top: 5px; width: 10px; height: 10px; border-radius: 50%; background: var(--primary); border: 2px solid #fff; box-shadow: 0 0 0 1px var(--line); }
.tl .tl-item .t { color: var(--muted); font-size: 12px; }
.tl .tl-item .d { font-size: 13px; margin-top: 2px; }

.tabs { display: flex; gap: 6px; border-bottom: 1px solid var(--line); margin-bottom: 14px; flex-wrap: wrap; }
.tabs .tab { padding: 8px 16px; cursor: pointer; font-size: 13.5px; color: var(--muted); border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs .tab.active { color: var(--primary); border-color: var(--primary); font-weight: 600; }

.kv { display: grid; grid-template-columns: 96px 1fr; gap: 6px 10px; font-size: 13px; }
.kv .k { color: var(--muted); }
.bar { height: 8px; border-radius: 6px; background: #edf0f6; overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--primary); border-radius: 6px; }
.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.toolbar .grow { flex: 1; }
.dim-row { display: flex; align-items: center; gap: 10px; padding: 5px 0; font-size: 13px; }
.dim-row .nm { width: 130px; flex-shrink: 0; }
.dim-row .bar { flex: 1; }
.dim-row .sc { width: 40px; text-align: right; font-weight: 600; }
.detail-block { background: #f8f9fc; border-radius: 10px; padding: 12px 14px; margin-top: 10px; font-size: 13px; line-height: 1.7; white-space: pre-wrap; }
.detail-block b.tt { display: block; margin-bottom: 4px; color: var(--primary); }