.admin-body{background:#f4f6f8}
.admin-main{width:min(1280px,100%);margin:0 auto;padding:30px 20px 60px}
.admin-login{min-height:calc(100vh - 128px);display:grid;place-items:center}
.admin-login-card{width:min(430px,100%);background:#fff;border:1px solid var(--line);border-radius:22px;padding:30px;box-shadow:var(--shadow)}
.admin-login-card h1{margin:0 0 7px;font-size:31px;letter-spacing:-.04em}
.admin-login-card p{margin:0 0 18px;color:var(--muted)}
.admin-login-card input{width:100%}
.admin-head{display:flex;justify-content:space-between;gap:20px;align-items:flex-end;margin-bottom:20px}
.admin-head h1{margin:0;font-size:38px;letter-spacing:-.045em}
.admin-head-actions{display:flex;gap:8px}
.control-card,.admin-card{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 12px 35px rgba(20,35,54,.06)}
.control-card{padding:20px 22px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.control-label{display:block;font-size:11px;font-weight:900;color:#73808e;margin-bottom:3px}
.control-card strong{font-size:20px}
.control-card p{font-size:12px;color:var(--muted);margin:5px 0 0}
.toggle-btn{width:62px;height:34px;border:0;border-radius:999px;background:#cfd6de;padding:4px;transition:.2s}
.toggle-btn span{display:block;width:26px;height:26px;border-radius:50%;background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.18);transition:.2s}
.toggle-btn.on{background:#2f7a5f}.toggle-btn.on span{transform:translateX(28px)}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:12px 0}
.stat-grid>div{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}
.stat-grid span{font-size:11px;color:var(--muted);font-weight:800}.stat-grid strong{display:block;margin-top:5px;font-size:28px}
.admin-card{padding:20px;margin-top:12px}
.admin-card-head{display:flex;justify-content:space-between;gap:15px;align-items:flex-end;margin-bottom:14px}
.admin-card-head h2{margin:0 0 3px;font-size:20px}.admin-card-head p{margin:0;font-size:12px;color:var(--muted)}
.filter-row{display:flex;gap:8px}.filter-row select{height:38px}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:12px}
.student-table{width:100%;border-collapse:collapse;font-size:12px;min-width:850px}
.student-table th,.student-table td{padding:11px 10px;border-bottom:1px solid #e7ebef;text-align:left;white-space:nowrap}
.student-table th{background:#f7f9fb;font-size:11px;color:#64717e}
.student-table tbody tr{cursor:pointer}.student-table tbody tr:hover{background:#f7faff}
.status-pill{display:inline-flex;padding:4px 8px;border-radius:999px;font-size:10px;font-weight:850}
.status-pill.active{background:#fff7dc;color:#8a6714}.status-pill.submitted{background:#eaf6f0;color:#25654f}.status-pill.void{background:#f1f2f4;color:#737b84}
.admin-detail-card{width:min(1000px,calc(100vw - 24px));max-height:calc(100vh - 24px);overflow:auto;background:#fff;border-radius:20px;padding:20px;box-shadow:0 24px 80px rgba(0,0,0,.26)}
.detail-actions{display:flex;justify-content:flex-end;margin-bottom:12px}
.danger-outline{border:1px solid #dfb8b2;background:#fff;color:#a34238;border-radius:10px;padding:8px 11px;font-weight:800}
.answer-list{display:flex;flex-direction:column;gap:10px}
.answer-item{border:1px solid var(--line);border-radius:14px;padding:14px}
.answer-item-head{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:8px}
.answer-item-head strong{font-size:13px}.answer-item-head span{font-size:11px;color:var(--muted)}
.student-answer{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.student-answer>div{background:#f7f9fb;border-radius:10px;padding:10px}
.student-answer b{display:block;font-size:10px;color:#72808d;margin-bottom:4px}
.student-answer p{margin:0;font-size:12px;line-height:1.55;white-space:pre-wrap}
.score-row{display:flex;gap:10px;align-items:center;margin-top:10px;padding-top:10px;border-top:1px dashed var(--line)}
.score-row>span{font-size:11px;font-weight:800;color:#65717f}
.score-buttons{display:flex;gap:5px}
.score-buttons button{width:34px;height:30px;border:1px solid #cfd7df;border-radius:8px;background:#fff;font-weight:850}
.score-buttons button.on{background:#18212c;color:#fff;border-color:#18212c}
.teacher-comment{flex:1;min-width:180px;height:36px!important}
@media(max-width:700px){
  .admin-main{padding:18px 10px 40px}.admin-head{display:block}.admin-head-actions{margin-top:12px}
  .stat-grid{grid-template-columns:1fr}.admin-card-head{display:block}.filter-row{margin-top:10px}
  .student-answer{grid-template-columns:1fr}.score-row{align-items:flex-start;flex-wrap:wrap}
}

.view-answer-btn{
  border:1px solid #cbd6e3;
  background:#eef4ff;
  color:#24508a;
  border-radius:8px;
  padding:6px 9px;
  font-size:11px;
  font-weight:850;
  white-space:nowrap;
}
.view-answer-btn:hover{background:#e3edfc}
.question-case-box{
  background:#fff;
  border:1px solid #e3e8ed;
  border-radius:10px;
  padding:10px 11px;
  margin-bottom:9px;
}
.question-case-box b{
  display:block;
  font-size:10px;
  color:#72808d;
  margin-bottom:4px;
}
.question-case-box p{
  margin:0;
  font-size:12px;
  line-height:1.55;
  color:#394554;
}

.stat-grid-four{grid-template-columns:repeat(4,1fr)}
.recovery-rows{display:flex;flex-direction:column;gap:8px}
.recovery-row{
  display:flex;justify-content:space-between;gap:12px;align-items:center;
  border:1px solid var(--line);border-radius:12px;padding:11px 12px;background:#fbfcfd
}
.recovery-row-main{display:flex;flex-direction:column;gap:2px}
.recovery-row-main strong{font-size:13px}
.recovery-row-main span{font-size:11px;color:var(--muted)}
.recovery-actions{display:flex;gap:6px}
.approve-btn,.reject-btn{
  border-radius:8px;padding:7px 10px;font-size:11px;font-weight:850;border:1px solid
}
.approve-btn{background:#eaf6f0;color:#25654f;border-color:#c9e7da}
.reject-btn{background:#fff3f0;color:#a34238;border-color:#efd0ca}
@media(max-width:700px){
  .stat-grid-four{grid-template-columns:1fr 1fr}
  .recovery-row{align-items:flex-start;flex-direction:column}
}

.row-actions{
  display:flex;
  gap:6px;
  align-items:center;
  white-space:nowrap;
}
.trash-btn,.restore-btn{
  border-radius:8px;
  padding:6px 9px;
  font-size:11px;
  font-weight:850;
  border:1px solid;
}
.trash-btn{
  background:#fff7f3;
  color:#9a4b36;
  border-color:#efd4ca;
}
.trash-btn:hover{background:#ffefe8}
.restore-btn{
  background:#edf7f2;
  color:#28654f;
  border-color:#cce5d9;
}
.restore-btn:hover{background:#e3f2ea}
.trash-card{margin-top:16px}
.trash-count{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:24px;
  height:24px;
  margin-left:5px;
  padding:0 7px;
  border-radius:999px;
  background:#f1f3f5;
  color:#68727d;
  font-size:11px;
  vertical-align:middle;
}

button,input,select,textarea{box-sizing:border-box}

.purge-btn{
  border-radius:8px;
  padding:6px 9px;
  font-size:11px;
  font-weight:850;
  border:1px solid #e8c7c2;
  background:#fff2f0;
  color:#9b352d;
}
.purge-btn:hover{background:#ffe8e4}

.admin-identity{
  display:inline-flex;align-items:center;min-height:36px;padding:0 11px;
  border:1px solid #dbe2e8;border-radius:999px;background:#f3f6f8;
  color:#596776;font-size:11px;font-weight:800;white-space:nowrap;
}