/* Teacher Course Studio */
.tcs-summary{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:14px 0 18px}
.tcs-summary article{padding:16px;border:1px solid rgba(226,234,255,.08);border-radius:14px;background:#0b182a}
.tcs-summary span,.tcs-toolbar label>span,.tcs-block>span,.tcs-teacher-actions>div>span{display:block;font-size:9px;letter-spacing:.1em;font-weight:900;color:#7585a1}
.tcs-summary strong{display:block;margin-top:6px;font-size:24px}.tcs-summary small{color:#8190aa}
.tcs-toolbar{display:grid;grid-template-columns:1.2fr 1.2fr .7fr 1.5fr;gap:10px;margin-bottom:14px}
.tcs-toolbar label{display:grid;gap:6px}.tcs-toolbar select,.tcs-toolbar input,.tcs-teacher-actions input,.tcs-teacher-actions textarea{width:100%;min-height:42px;border:1px solid rgba(226,234,255,.1);border-radius:10px;background:#07111f;color:#eef3ff;padding:0 11px;font:inherit}
.tcs-teacher-actions textarea{min-height:90px;padding:11px;resize:vertical}
.tcs-layout{display:grid;grid-template-columns:minmax(300px,.78fr) minmax(0,1.55fr);gap:14px;align-items:start}
.tcs-units{display:grid;gap:8px;max-height:calc(100vh - 250px);overflow:auto;padding-right:4px}
.tcs-unit{display:grid;grid-template-columns:42px minmax(0,1fr);gap:11px;text-align:left;padding:13px;border:1px solid rgba(226,234,255,.08);border-radius:13px;background:#0b182a;color:#eef3ff;cursor:pointer}
.tcs-unit:hover,.tcs-unit.is-active{border-color:rgba(44,230,214,.28);background:rgba(44,230,214,.045)}
.tcs-unit-num{display:grid;place-items:center;width:36px;height:36px;border-radius:10px;background:#07111f;color:#2ce6d6;font-weight:900}
.tcs-unit span{font-size:9px;color:#71809b}.tcs-unit h3{margin:4px 0 5px;font-size:15px}.tcs-unit p{margin:0;color:#8d9ab1;line-height:1.45;font-size:12px}
.tcs-unit small{display:block;margin-top:5px;color:#8695ae}.tcs-mini{height:5px;margin-top:9px;border-radius:99px;background:#07111f;overflow:hidden}.tcs-mini i{display:block;height:100%;background:linear-gradient(90deg,#2ce6d6,#83e949)}
.tcs-detail{border:1px solid rgba(226,234,255,.08);border-radius:16px;background:#0b182a;padding:18px;max-height:calc(100vh - 230px);overflow:auto}
.tcs-detail-head{display:flex;justify-content:space-between;gap:14px}.tcs-detail-head span{font-size:9px;color:#83e949;font-weight:900;letter-spacing:.1em}.tcs-detail-head h2{margin:5px 0;font-size:25px}.tcs-detail-head p{margin:0;color:#93a0b7;line-height:1.55}.tcs-detail-head>strong{height:max-content;border-radius:999px;padding:6px 10px;background:#07111f;color:#2ce6d6;font-size:10px}
.tcs-detail-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:16px 0}.tcs-detail-stats article{padding:12px;border-radius:11px;background:#07111f}.tcs-detail-stats span{font-size:8px;color:#71809b}.tcs-detail-stats strong{display:block;margin-top:5px}
.tcs-block{margin-top:12px;padding:15px;border-radius:13px;background:#07111f}.tcs-block h3{margin:6px 0 8px}.tcs-block>p{color:#a5b1c5;line-height:1.65}.tcs-block>div{display:grid;gap:7px;margin-top:8px}.tcs-block article{padding:10px;border-radius:10px;background:#0d1b31}.tcs-block article b{display:block}.tcs-block article small{color:#83e949}.tcs-block article p{margin:5px 0 0;color:#8793ad;line-height:1.45}
.tcs-block ul,.tcs-block ol{color:#bac5d7;line-height:1.7}.tcs-dialogue>div{display:grid;grid-template-columns:90px minmax(0,1fr);gap:10px}.tcs-dialogue p{margin:0}
.tcs-teacher-actions{display:grid;grid-template-columns:1.1fr .9fr;gap:12px;margin-top:14px}.tcs-teacher-actions>div{padding:15px;border-radius:13px;border:1px solid rgba(131,233,73,.12);background:rgba(131,233,73,.035)}.tcs-teacher-actions label{display:grid;gap:5px;margin-top:9px;color:#92a0b7;font-size:11px}.tcs-teacher-actions button{min-height:42px;margin-top:10px;border:1px solid rgba(44,230,214,.18);border-radius:10px;background:rgba(44,230,214,.08);color:#2ce6d6;font-weight:900;padding:0 13px;cursor:pointer}.tcs-teacher-actions button.is-secondary{background:#07111f;color:#b7c2d5}.tcs-teacher-actions small{display:block;margin-top:7px;color:#83e949}
@media(max-width:1050px){.tcs-summary{grid-template-columns:1fr 1fr}.tcs-toolbar{grid-template-columns:1fr 1fr}.tcs-layout{grid-template-columns:1fr}.tcs-units,.tcs-detail{max-height:none}}
@media(max-width:620px){.tcs-summary,.tcs-toolbar,.tcs-detail-stats,.tcs-teacher-actions{grid-template-columns:1fr}.tcs-dialogue>div{grid-template-columns:1fr}}