/* v24 — ثبت چندکلاسه و مرکز Excel */
.v24-class-picker{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:10px 0 6px}
.v24-class-choice{position:relative;display:block;min-width:0}
.v24-class-choice input{position:absolute;opacity:0;pointer-events:none}
.v24-class-choice span{min-height:66px;display:flex;flex-direction:column;justify-content:center;padding:11px 13px;border:1px solid var(--line,#dfe5ef);border-radius:16px;background:#f8faff;cursor:pointer;transition:.18s ease}
.v24-class-choice b{font-size:13px;color:#1d2b49}.v24-class-choice small{display:block;color:#6a7891;font-size:10px;margin-top:3px}
.v24-class-choice input:checked+span{background:linear-gradient(145deg,#edf3ff,#f4f0ff);border-color:#6884e9;box-shadow:0 0 0 4px rgba(50,78,190,.08)}
.v24-class-choice input:checked+span:after{content:"✓ فعال برای دانش‌آموز";display:block;color:#15865a;font-size:10px;font-weight:900;margin-top:4px}
.v24-teacher-multiclass{margin:14px 0;padding:14px;border:1px solid #dce5f6;border-radius:19px;background:linear-gradient(145deg,#fbfdff,#f7f5ff)}
.v24-teacher-multiclass h4{margin:0 0 3px}
.v24-excel-center{overflow:hidden;background:linear-gradient(145deg,#fff,#f7f9ff)}
.v24-excel-center>.actions{position:static;box-shadow:none;border:0;background:transparent;padding:0;margin:10px 0;justify-content:flex-start}
.v24-import-box{display:grid;grid-template-columns:minmax(220px,1fr) auto auto;gap:9px;align-items:center;padding:13px;border:1px dashed #9bb0df;border-radius:17px;background:#f7f9ff}
.v24-import-box input{margin:0}.v24-ok{color:#087247;font-weight:900}.v24-error{color:#b02b3d;font-weight:800}
@media(max-width:720px){.v24-class-picker{grid-template-columns:1fr}.v24-import-box{grid-template-columns:1fr}.v24-import-box button{width:100%}.v24-excel-center>.actions{flex-direction:column}.v24-excel-center>.actions button{width:100%}}