:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --line: #e3e6ea;
  --text: #1f2937;
  --muted: #6b7280;
  --brand: #0e7a8a;
  --brand-dark: #0a5f6c;
  --ok: #16a34a;
  --warn: #d97706;
  --bad: #dc2626;
  --radius: 10px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
}

/* ---------- 登录页 ---------- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-card {
  width: 360px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
}
.login-card h1 {
  font-size: 20px;
  text-align: center;
  margin-bottom: 4px;
  color: var(--brand-dark);
}
.login-card .sub {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 22px;
}
.login-err {
  background: #fef2f2;
  color: var(--bad);
  border: 1px solid #fecaca;
  border-radius: 8px;
  padding: 8px 12px;
  margin-bottom: 14px;
  font-size: 13px;
  display: none;
}

/* ---------- 布局 ---------- */
.topbar {
  background: var(--brand-dark);
  color: #fff;
  display: flex;
  align-items: center;
  padding: 0 20px;
  height: 54px;
}
.topbar .logo { font-size: 16px; font-weight: 500; margin-right: 28px; }
.topbar nav { display: flex; gap: 6px; flex: 1; }
.topbar nav button {
  background: transparent;
  border: none;
  color: rgba(255,255,255,.82);
  font-size: 14px;
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
}
.topbar nav button:hover { background: rgba(255,255,255,.12); color: #fff; }
.topbar nav button.active { background: rgba(255,255,255,.18); color: #fff; font-weight: 500; }
.topbar .who { font-size: 12px; opacity: .85; margin-right: 12px; }
.topbar .logout {
  background: rgba(255,255,255,.15);
  border: none;
  color: #fff;
  padding: 6px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
}
.topbar .logout:hover { background: rgba(255,255,255,.25); }
.container { max-width: 1080px; margin: 22px auto; padding: 0 20px; }
.page-title { font-size: 17px; font-weight: 500; margin-bottom: 16px; }
.page-desc { color: var(--muted); font-size: 13px; margin-bottom: 18px; }

/* ---------- 通用卡片/表格 ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 16px;
}
table.grid { width: 100%; border-collapse: collapse; }
table.grid th, table.grid td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}
table.grid th { font-weight: 500; color: var(--muted); font-size: 13px; background: #fafbfc; }
table.grid tr:last-child td { border-bottom: none; }
table.grid tr:hover td { background: #fafcff; }

/* ---------- 徽章 ---------- */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  line-height: 1.7;
}
.badge.ok { background: #dcfce7; color: #166534; }
.badge.warn { background: #fef3c7; color: #92400e; }
.badge.bad { background: #fee2e2; color: #991b1b; }
.badge.muted { background: #f1f2f4; color: #6b7280; }

/* ---------- 表单 ---------- */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 20px;
}
.form-grid .full { grid-column: 1 / -1; }
.field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 5px; }
.field input[type=text],
.field input[type=password],
.field input[type=date],
.field select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 14px;
  background: #fff;
  color: var(--text);
  outline: none;
}
.field input:focus, .field select:focus { border-color: var(--brand); }
.field input[type=color] { width: 60px; height: 34px; border: 1px solid var(--line); border-radius: 8px; padding: 2px; background: #fff; }
.hint { font-size: 12px; color: var(--muted); }

/* 功能/学段/科目 勾选组 */
.check-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}
.check-group label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  cursor: pointer;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 12px;
}
.check-group label.on { background: #ecfdf5; border-color: #6ee7b7; }
.check-group input[type=checkbox] { width: 15px; height: 15px; accent-color: var(--brand); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
}
.btn:hover { border-color: #c9cfd6; }
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn.primary:hover { background: var(--brand-dark); }
.btn.danger { color: var(--bad); border-color: #fecaca; }
.btn.sm { padding: 4px 12px; font-size: 13px; }
.actions { display: flex; gap: 10px; margin-top: 18px; }
.row-actions { display: flex; gap: 8px; }

/* ---------- 档位卡片 ---------- */
.tier-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.tier-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
.tier-card h3 { font-size: 15px; margin-bottom: 12px; color: var(--brand-dark); }
.tier-card .check-group { flex-direction: column; align-items: flex-start; gap: 6px; }
.tier-card .check-group label { background: #fff; border: none; padding: 4px 0; }

/* ---------- toast ---------- */
#toast {
  position: fixed;
  top: 66px;
  left: 50%;
  transform: translateX(-50%);
  background: #111827;
  color: #fff;
  padding: 10px 22px;
  border-radius: 10px;
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s;
  z-index: 99;
}
#toast.show { opacity: .95; }

/* ---------- 错题查询 ---------- */
.modal-mask{position:fixed;inset:0;background:rgba(0,0,0,.45);display:flex;align-items:flex-start;justify-content:center;padding:60px 20px;z-index:50;}
.modal{background:#fff;border-radius:12px;padding:20px 22px;width:100%;max-width:720px;max-height:85vh;overflow:auto;box-shadow:0 8px 30px rgba(0,0,0,.2);}
.modal-title{font-size:15px;font-weight:500;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid #e5e7eb;}
.q-cell{max-width:280px;white-space:normal;word-break:break-all;color:#374151;font-size:12.5px;}
.pager{display:flex;align-items:center;gap:10px;padding:12px 4px 2px;color:#6b7280;font-size:13px;}
.btn.danger{background:#fef2f2;border-color:#fca5a5;color:#b91c1c;}
.btn.danger:hover{background:#fee2e2;}
#toast{z-index:200;}

/* ---------- 名册管理 ---------- */
.roster-t-head{display:flex;align-items:center;gap:12px;padding:12px 14px;border-bottom:1px solid #e5e7eb;font-size:14px;}
.roster-t-head .hint{color:#6b7280;font-size:12px;}

/* ---------- 名册管理 ---------- */
.roster-t-head{display:flex;align-items:center;gap:12px;padding:12px 14px;border-bottom:1px solid #e5e7eb;font-size:14px;}
.roster-t-head .hint{color:#6b7280;font-size:12px;}