.dark{color-scheme:dark;--bg:#151a22;--surface:#202732;--ink:#f0f3f8;--muted:#bec8d6;--line:#3d4858;--accent:#aecfff}
.dark .nav-item,.dark .sidebar-support,.dark .admin-group,.dark .admin-subnav button{color:#dce4ef;font-weight:600}
.dark .nav-caption,.dark .brand span,.dark .profile small,.dark .access-tag{color:var(--muted)}
.dark .nav-item:hover,.dark .sidebar-support:hover,.dark .profile:hover,.dark .admin-group:hover,.dark .curriculum-lesson:hover{background:#2c3746;color:var(--ink)}
.dark .nav-item.active,.dark .sidebar-support.active,.dark .admin-group.selected,.dark .tabs .button.active,.dark .recruit-tabs .button.active,.dark .curriculum-lesson.selected{background:#34465e;color:#f5f8ff;font-weight:700}
.dark .admin-subnav button[aria-current]{color:var(--ink);border-color:#aecfff}
.dark .nav-item small{background:#273344;color:#e3edff}
.dark .icon-button,.dark .carrier-icon,.dark .stat .icon,.dark .lesson-row .icon,.dark .video-placeholder>.icon{color:#bfcee1}
.dark .badge,.dark .notice,.dark .reply{background:#2c3b50;color:#dbe8fb}
.dark .badge.pending{background:#403525;color:#f0d9aa}
.dark .permission-row{border-color:var(--line)}
.dark .check-box{color:#c8def7;border-color:#7b92ae}
.dark .check-row.done,.dark .check-row.completed,.dark .check-item.complete{background:#263b32}
.dark button:focus-visible,.dark a:focus-visible,.dark input:focus-visible,.dark select:focus-visible,.dark textarea:focus-visible{outline-color:#b3d1ff}