.app{min-height:100dvh}
.sidebar{position:fixed;inset:0 auto 0 0;width:230px;background:var(--navy);color:white;padding:18px 14px;z-index:30;display:flex;flex-direction:column}
.brand{display:flex;align-items:center;gap:10px;padding:4px 4px 14px}
.logo{width:42px;height:42px;border-radius:12px;background:white var(--drz) center/contain no-repeat;border:1px solid rgba(255,255,255,.15)}
.brand strong{display:block;font-size:14px}.brand small{display:block;margin-top:2px;color:#a9b8c6;font-size:10px}
.side-course{margin:6px 0 12px;border:1px solid rgba(255,255,255,.12);border-radius:12px;background:rgba(255,255,255,.05)}
.side-course summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;min-height:54px;padding:10px 11px}
.side-course summary::-webkit-details-marker{display:none}.side-course summary small{display:block;color:#93a6b7;font-size:9px;text-transform:uppercase;letter-spacing:.08em}.side-course summary strong{display:block;margin-top:3px;font-size:12px}
.course-options{padding:6px;border-top:1px solid rgba(255,255,255,.1)}.course-choice{display:block;padding:9px;border-radius:9px;color:#dbe4ec;font-size:11px;cursor:pointer}
#c151:checked~.app .course-choice[for=c151],#c255:checked~.app .course-choice[for=c255]{background:rgba(255,255,255,.09);color:white}
.side-nav{display:grid;gap:4px}.nav-label{display:flex;align-items:center;gap:10px;min-height:44px;padding:0 11px;border-radius:10px;color:#a9b8c6;font-size:12px;font-weight:700;cursor:pointer}
.nav-label:hover{background:rgba(255,255,255,.06);color:white}
#p-home:checked~.app [for=p-home],#p-course:checked~.app [for=p-course],#p-schedule:checked~.app [for=p-schedule],#p-recordings:checked~.app [for=p-recordings],#p-resources:checked~.app [for=p-resources],#p-exams:checked~.app [for=p-exams],#p-office:checked~.app [for=p-office],#p-payments:checked~.app [for=p-payments],#p-instructor:checked~.app [for=p-instructor],#p-admin:checked~.app [for=p-admin]{background:white;color:var(--navy)}
.brand-context{margin:0 4px 12px;padding:9px 10px;border:1px solid rgba(255,255,255,.11);border-radius:10px;background:rgba(255,255,255,.045)}.brand-context strong{display:block;color:#e4e9ed;font-size:9px;letter-spacing:.06em;text-transform:uppercase}.brand-context span{display:block;margin-top:4px;color:#93a6b7;font-size:8px;line-height:1.4}
.side-bottom{margin-top:auto;padding-top:12px;border-top:1px solid rgba(255,255,255,.1);color:#93a6b7;font-size:10px;line-height:1.45}
.main{margin-left:230px;min-width:0}
.topbar{position:sticky;top:0;z-index:20;height:66px;display:flex;align-items:center;justify-content:space-between;padding:0 22px;background:rgba(245,240,230,.92);backdrop-filter:blur(18px);border-bottom:1px solid rgba(229,222,210,.9)}
.mobile-logo{display:none}.page-name span{display:none}#p-home:checked~.app .page-name .t-home,#p-course:checked~.app .page-name .t-course,#p-schedule:checked~.app .page-name .t-schedule,#p-recordings:checked~.app .page-name .t-recordings,#p-resources:checked~.app .page-name .t-resources,#p-exams:checked~.app .page-name .t-exams,#p-office:checked~.app .page-name .t-office,#p-payments:checked~.app .page-name .t-payments,#p-more:checked~.app .page-name .t-more,#p-instructor:checked~.app .page-name .t-instructor,#p-admin:checked~.app .page-name .t-admin{display:inline}
.page-name strong{font-size:14px}.top-actions{display:flex;align-items:center;gap:8px}
.top-course{position:relative}.top-course summary{list-style:none;cursor:pointer;min-height:38px;display:flex;align-items:center;gap:7px;padding:0 11px;border:1px solid var(--line);border-radius:10px;background:white;font-size:11px;font-weight:800}
.top-course summary::-webkit-details-marker{display:none}.top-course .course-options{position:absolute;right:0;top:44px;width:170px;padding:6px;background:white;border:1px solid var(--line);border-radius:11px;box-shadow:var(--shadow);z-index:60}.top-course .course-choice{color:var(--navy)}
.notify{position:relative}.notify summary{list-style:none;width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--line);border-radius:10px;background:white;cursor:pointer}.notify summary::-webkit-details-marker{display:none}.notify-panel{position:absolute;right:0;top:44px;width:280px;padding:10px;background:white;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}.notify-item{padding:9px;border-radius:9px;background:var(--paper2);margin-bottom:6px}.notify-item strong{display:block;font-size:11px}.notify-item span{display:block;margin-top:3px;color:var(--muted);font-size:9px}
.content{max-width:1240px;margin:0 auto;padding:18px 20px 40px}
.view{display:none}
#p-home:checked~.app .view-home,#p-course:checked~.app .view-course,#p-schedule:checked~.app .view-schedule,#p-recordings:checked~.app .view-recordings,#p-resources:checked~.app .view-resources,#p-exams:checked~.app .view-exams,#p-office:checked~.app .view-office,#p-payments:checked~.app .view-payments,#p-more:checked~.app .view-more,#p-instructor:checked~.app .view-instructor,#p-admin:checked~.app .view-admin{display:block}
.mobile-nav{display:none}