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button.selected:hover{border-color:var(--color-primary-hover)!important;background:var(--color-primary-hover)!important;color:#fff!important}app-root button:not(.primary):not(.search):not(.accept):not(.participate):not(.close):not(.logout-button):not(.mobile-logout){border-radius:var(--radius-control)}app-root :is(input,select,textarea){border-radius:var(--radius-control)}app-root :is(.card,.step,.workspace,.groups article,.recent article,.stats article,.teacher section,.page section){box-shadow:var(--shadow-card)}app-root :is(.empty,.state,.notice){border-radius:var(--radius-card)}app-root .error{border:1px solid rgba(220,38,38,.18);background:var(--color-error-soft)!important;color:var(--color-error)!important}app-root .success{border:1px solid rgba(22,163,74,.18);background:var(--color-success-soft)!important;color:var(--color-success)!important}app-root h1,app-root h2,app-root h3{color:var(--color-text-primary);line-height:1.2;letter-spacing:-.025em}app-root 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a{color:var(--color-text-secondary)!important}app-root .student-sidebar .desktop-nav a:hover{background:var(--color-background-alt)!important;color:var(--color-primary-dark)!important}app-root .student-sidebar .desktop-nav a.active{background:var(--color-primary-soft)!important;color:var(--color-primary-dark)!important}app-root .student-sidebar .sidebar-user{border-color:var(--color-border)!important}app-root .student-sidebar .avatar{background:var(--color-primary-soft)!important;color:var(--color-primary-dark)!important}app-root .student-sidebar .identity small,app-root .student-sidebar .logout-button{color:var(--color-text-secondary)!important}app-root .student-topbar{background:#fffffff5!important}app-root .student-topbar .topbar-title,app-root .student-topbar .mobile-logout{color:var(--color-primary-dark)!important}app-root .mobile-nav{background:#fffffff7!important}app-root .mobile-nav 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