.dashboard{--dash-bg:#0a0a0a;--dash-surface:#111;--dash-surface-hover:#1a1a1a;--dash-border:#27272a;--dash-text:#fff;--dash-text-muted:#a1a1aa;--dash-primary:#bcef12;--dash-primary-hover:#a8d610;--dash-primary-muted:#bcef121a;--dash-success:#22c55e;--dash-warning:#f59e0b;--dash-error:#ef4444;--dash-info:#3b82f6;--dash-sidebar-width:280px;--dash-header-height:64px;background-color:var(--dash-bg);color:var(--dash-text);min-height:100vh}.dashboard-layout{min-height:100vh;display:flex}.dashboard-sidebar{width:var(--dash-sidebar-width);background:var(--dash-surface);border-right:1px solid var(--dash-border);z-index:40;flex-direction:column;transition:transform .3s;display:flex;position:fixed;top:0;bottom:0;left:0}.dashboard-sidebar.collapsed{transform:translate(-100%)}.dashboard-main{margin-left:var(--dash-sidebar-width);flex-direction:column;flex:1;min-height:100vh;display:flex}.dashboard-header{height:var(--dash-header-height);background:var(--dash-surface);border-bottom:1px solid var(--dash-border);z-index:30;justify-content:space-between;align-items:center;width:100%;padding:0 1.5rem;display:flex;position:sticky;top:0}.dashboard-content{flex:1;padding:1.5rem;overflow-y:auto}.sidebar-logo{border-bottom:1px solid var(--dash-border);align-items:center;gap:.75rem;padding:1.25rem 1.5rem;display:flex}.sidebar-logo-icon{background:var(--dash-primary);color:#0a0a0a;border-radius:10px;justify-content:center;align-items:center;width:40px;height:40px;font-size:1.25rem;font-weight:700;display:flex}.sidebar-logo-text{color:var(--dash-text);font-size:1.125rem;font-weight:600}.sidebar-nav{flex:1;padding:1rem 0;overflow-y:auto}.sidebar-section{margin-bottom:1.5rem;padding:0 .75rem}.sidebar-section-title{text-transform:uppercase;letter-spacing:.05em;color:var(--dash-text-muted);margin-bottom:.5rem;padding:0 .75rem;font-size:.75rem;font-weight:600}.sidebar-link{color:var(--dash-text-muted);border-radius:8px;align-items:center;gap:.75rem;padding:.75rem;font-size:.875rem;font-weight:500;text-decoration:none;transition:all .2s;display:flex}.sidebar-link:hover{background:var(--dash-surface-hover);color:var(--dash-text)}.sidebar-link.active{background:var(--dash-primary-muted);color:var(--dash-primary)}.sidebar-link-icon{flex-shrink:0;width:20px;height:20px}.sidebar-profile-card{border-bottom:1px solid var(--dash-border);text-align:center;flex-direction:column;align-items:center;gap:.875rem;padding:1.25rem 1.5rem;display:flex}.sidebar-profile-avatar-wrapper{display:inline-block;position:relative}.sidebar-profile-avatar{background:var(--dash-primary);color:#0a0a0a;border:3px solid var(--dash-surface);border-radius:50%;justify-content:center;align-items:center;width:64px;height:64px;font-size:1.25rem;font-weight:600;display:flex;box-shadow:0 2px 8px #0003}.sidebar-profile-status{background:var(--dash-success);border:2px solid var(--dash-surface);border-radius:50%;width:14px;height:14px;position:absolute;bottom:2px;right:2px}.sidebar-profile-info{width:100%;min-width:0}.sidebar-profile-name{color:var(--dash-text);white-space:nowrap;text-overflow:ellipsis;margin-bottom:.25rem;font-size:.9375rem;font-weight:600;overflow:hidden}.sidebar-profile-email{color:var(--dash-text-muted);white-space:nowrap;text-overflow:ellipsis;font-size:.8125rem;overflow:hidden}.sidebar-profile-badge{background:var(--dash-primary-muted);color:var(--dash-primary);text-transform:uppercase;letter-spacing:.5px;border-radius:6px;padding:.375rem .875rem;font-size:.75rem;font-weight:600;display:inline-block}.sidebar-footer{border-top:1px solid var(--dash-border);margin-top:auto;padding:1rem}.sidebar-logout-btn{cursor:pointer;color:var(--dash-text-muted);border:1px solid var(--dash-border);background:0 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.2s;display:flex}.sidebar-user:hover{background:var(--dash-surface-hover)}.sidebar-user-avatar{background:var(--dash-primary);color:#0a0a0a;border-radius:50%;justify-content:center;align-items:center;width:36px;height:36px;font-size:.875rem;font-weight:600;display:flex}.sidebar-user-info{flex:1;min-width:0}.sidebar-user-name{color:var(--dash-text);white-space:nowrap;text-overflow:ellipsis;font-size:.875rem;font-weight:500;overflow:hidden}.sidebar-user-email{color:var(--dash-text-muted);white-space:nowrap;text-overflow:ellipsis;font-size:.75rem;overflow:hidden}.dash-card{background:var(--dash-surface);border:1px solid var(--dash-border);border-radius:var(--dash-radius,1.075rem);box-shadow:var(--dash-shadow,0 25px 50px -12px #00000080);overflow:hidden}.dash-card-header{border-bottom:1px solid var(--dash-border);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#0003;justify-content:space-between;align-items:center;padding:1rem 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.2s;display:flex}.lesson-module-header:hover{background:var(--dash-surface-hover)}.lesson-module-title{color:var(--dash-text);align-items:center;gap:.5rem;font-size:.9375rem;font-weight:600;display:flex}.lesson-module-meta{color:var(--dash-text-muted);font-size:.75rem}.lesson-item{cursor:pointer;border-left:2px solid #0000;align-items:center;gap:.75rem;padding:.875rem 1rem .875rem 2.5rem;transition:background .2s;display:flex}.lesson-item:hover{background:var(--dash-surface-hover)}.lesson-item.active{background:var(--dash-primary-muted);border-left-color:var(--dash-primary)}.lesson-item.completed{opacity:.8}.lesson-check{border:2px solid 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var(--dash-info)}.toast-message{color:var(--dash-text);flex:1;font-size:.875rem}.toast-close{color:var(--dash-text-muted);cursor:pointer;background:0 0;border:none;padding:.25rem}.toast-close:hover{color:var(--dash-text)}.dash-toggle{flex-shrink:0;width:44px;height:24px;display:inline-block;position:relative}.dash-toggle input{opacity:0;width:0;height:0}.dash-toggle-slider{cursor:pointer;background-color:var(--dash-surface-hover);border:1px solid var(--dash-border);border-radius:12px;transition:all .3s;position:absolute;inset:0}.dash-toggle-slider:before{content:"";background-color:var(--dash-text-muted);border-radius:50%;width:18px;height:18px;transition:all .3s;position:absolute;bottom:2px;left:2px}.dash-toggle input:checked+.dash-toggle-slider{background-color:var(--dash-primary);border-color:var(--dash-primary)}.dash-toggle input:checked+.dash-toggle-slider:before{background-color:#0a0a0a;transform:translate(20px)}.dash-toggle input:focus+.dash-toggle-slider{box-shadow:0 0 0 2px 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solid var(--dash-border)}.transition-colors{transition:color .15s,background-color .15s,border-color .15s}.cursor-pointer{cursor:pointer}.hover\:opacity-80:hover{opacity:.8}.hover\:underline:hover{text-decoration:underline}