/* =========================================================
   教师控制台样式
   ========================================================= */
a.btn{text-decoration:none;display:inline-flex;align-items:center;justify-content:center}

/* ---------- 口令验证 ---------- */
.teacher-gate{
  position:relative;z-index:1;min-height:100vh;
  display:flex;align-items:center;justify-content:center;padding:24px;
}
.gate-card{width:min(430px,100%);padding:34px 30px;text-align:center}
.gate-icon{font-size:36px;line-height:1;margin-bottom:14px}
.gate-card h1{font-size:26px;letter-spacing:.05em}
.gate-card p{margin-top:10px}
.gate-card .inp{
  margin-top:20px;text-align:center;letter-spacing:.18em;font-size:16px;
}
.gate-card .row{justify-content:center;margin-top:16px}
.gate-error{color:#ff9d9d}

/* ---------- 页面 ---------- */
.teacher-page{position:relative;z-index:1;max-width:1120px;margin:0 auto;padding:46px 20px 90px}
.teacher-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:18px;
  flex-wrap:wrap;margin-bottom:26px;
}
.teacher-head .badge{margin-bottom:14px}
.teacher-head h1{font-size:clamp(24px,3.6vw,38px);letter-spacing:.05em}
.teacher-head p{margin-top:10px;line-height:1.8;max-width:640px}

/* ---------- 统计 ---------- */
.stats{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));
  gap:14px;margin-bottom:24px;
}
.stat{
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  border:1px solid var(--line);border-radius:16px;padding:16px 18px;text-align:center;
}
.stat-num{
  font-size:28px;font-weight:800;color:var(--gold-2);line-height:1.2;
  font-variant-numeric:tabular-nums;text-shadow:0 0 22px rgba(243,201,105,.35);
}
.stat-lbl{font-size:12px;color:var(--muted);margin-top:4px;letter-spacing:.08em}

/* ---------- 新增学生 ---------- */
.add-card{margin-bottom:26px}
.add-card h2{font-size:17px;margin-bottom:14px;letter-spacing:.03em}
.add-grid{display:grid;grid-template-columns:1.2fr .7fr 1.2fr auto;gap:10px}
.add-hint{margin-top:10px}

/* ---------- 学生列表 ---------- */
.students-bar{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  flex-wrap:wrap;margin-bottom:14px;
}
.students-bar h2{font-size:18px;letter-spacing:.04em}
.search{max-width:250px}

.student{
  display:flex;align-items:center;gap:16px;flex-wrap:wrap;
  padding:15px 18px;margin-bottom:10px;
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.018));
  border:1px solid var(--line);border-radius:16px;transition:.2s;
}
.student:hover{border-color:rgba(243,201,105,.3)}
.s-main{display:flex;align-items:center;gap:12px;flex:1;min-width:190px}
.s-avatar{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  font-size:21px;background:rgba(255,255,255,.07);border:1px solid var(--line);
}
.s-name{font-weight:700;font-size:15.5px}
.s-info .small{margin-top:4px}
.s-coins{
  display:flex;align-items:center;gap:6px;min-width:82px;
  font-size:19px;font-weight:800;color:var(--gold-2);font-variant-numeric:tabular-nums;
}
.s-coins span{font-size:15px}
.s-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.s-amt{
  width:76px;padding:8px 10px;text-align:center;font-variant-numeric:tabular-nums;
  -moz-appearance:textfield;
}
.s-amt::-webkit-outer-spin-button,.s-amt::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.btn.sm{padding:7px 12px;font-size:12.5px;border-radius:9px}
.empty{padding:30px 0;text-align:center}

/* ---------- 数据导出 ---------- */.export-card{margin-bottom:26px}
.export-card h2{font-size:17px;margin-bottom:10px;letter-spacing:.03em}
.export-desc{line-height:1.9;max-width:820px}
.export-actions{margin-top:16px}
.export-status{
  margin-top:12px;padding:10px 14px;border-radius:11px;
  background:rgba(255,255,255,.035);border:1px solid var(--line);
  line-height:1.7;word-break:break-all;
}
.export-status.status-error{color:#ffb3b3;border-color:rgba(255,120,120,.35);background:rgba(255,120,120,.09)}
.backup-info{margin-top:10px;line-height:1.7;word-break:break-all}

/* 云端模式没有学生密码 */
body.mode-api [data-act="reset-pass"]{display:none}
body.mode-api #newPass{display:none}

/* ---------- 记录弹窗 ---------- */
.log-list{max-height:46vh;overflow-y:auto;margin-top:14px;padding-right:4px}
.log-list .log-item{margin-bottom:8px}
.log-date{font-size:11.5px;margin-top:3px}

@media(max-width:760px){
  .add-grid{grid-template-columns:1fr 1fr}
  .s-actions{width:100%}
}
@media(max-width:520px){
  .teacher-head{align-items:flex-start}
  .add-grid{grid-template-columns:1fr}
  .search{max-width:none;width:100%}
  .student{align-items:flex-start}
  .s-coins{margin-left:auto}
  .s-actions{justify-content:flex-start}
}