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(max-width:768px){.reg-split{grid-template-columns:1fr!important}.reg-banner{min-height:260px!important;padding:28px 24px!important}}.alert{display:flex;align-items:flex-start;gap:10px;padding:12px 16px;border-radius:var(--r-lg);margin-bottom:16px;font-size:13px;border:1px solid}.alert-info{background:var(--primary-glow);border-color:#4f76f540;color:var(--primary-light)}.alert-success{background:var(--emerald-dim);border-color:#10b98140;color:var(--emerald)}.alert-warning{background:var(--amber-dim);border-color:#f59e0b4d;color:var(--amber)}.alert-error{background:var(--rose-dim);border-color:#f43f5e40;color:var(--rose)}.btn-full{width:100%;justify-content:center}.chip{display:inline-block;background:var(--bg-elevated);border:1px solid var(--border);color:var(--text-secondary);padding:3px 10px;border-radius:999px;font-size:11px;font-weight:500}.chip-row{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0}:root{--emerald-dim: rgba(16,185,129,.14)}.video-wrap{position:relative;background:#000;border-radius:12px;overflow:hidden;line-height:0}.video-controls{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(transparent,#000000d9);padding:8px 12px 10px;display:flex;flex-direction:column;gap:6px;opacity:0;transition:opacity .2s}.video-wrap:hover .video-controls{opacity:1}.video-progress{height:4px;background:#fff3;border-radius:2px;cursor:pointer;position:relative}.video-progress-fill{height:100%;background:var(--primary-light);border-radius:2px;pointer-events:none}.chat-layout{display:flex;height:calc(100vh - 130px);border:1px solid var(--border);border-radius:16px;overflow:hidden;background:var(--bg-card)}.chat-sidebar{width:260px;border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0}.chat-sidebar-header{padding:14px 16px 10px;font-weight:800;font-size:14px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:8px}.chat-contact{width:100%;text-align:left;padding:12px 16px;background:transparent;border:none;border-bottom:1px solid var(--border);cursor:pointer;transition:background .15s}.chat-contact:hover,.chat-contact.active{background:var(--primary-glow)}.chat-pane{flex:1;display:flex;flex-direction:column;min-width:0}.chat-pane-header{padding:12px 18px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px}.chat-messages{flex:1;overflow-y:auto;padding:14px 18px;display:flex;flex-direction:column;gap:8px}.chat-bubble-mine{align-self:flex-end;background:var(--primary);color:#fff;padding:9px 13px;border-radius:12px 12px 3px;max-width:75%;font-size:13.5px;line-height:1.5;word-break:break-word}.chat-bubble-other{align-self:flex-start;background:var(--bg-elevated);color:var(--text-primary);padding:9px 13px;border-radius:12px 12px 12px 3px;max-width:75%;font-size:13.5px;line-height:1.5;word-break:break-word}.chat-input-row{padding:12px 16px;border-top:1px solid var(--border);display:flex;gap:10px;align-items:flex-end}.cover-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:6px}.cover-thumb{aspect-ratio:16/9;border-radius:8px;background-size:cover;background-position:center;cursor:pointer;border:2px solid var(--border);transition:border-color .15s}.cover-thumb:hover,.cover-thumb.selected{border-color:var(--primary)}[data-tema=light]{--bg-base:#F0F4FA;--bg-surface:#E8EEF8;--bg-elevated:#FFFFFF;--bg-card:#FFFFFF;--bg-card-hover:#F4F7FD;--bg-input:#F8FAFF;--bg-sidebar:#1C2A45;--border:#D0DAF0;--border-hover:#B0C0E0;--border-focus:#4F76F5;--text-primary:#0E1C30;--text-secondary:#3D5470;--text-muted:#7090B0;--text-inverse:#FFFFFF;--shadow-sm:0 2px 8px rgba(0,0,0,.08);--shadow-md:0 4px 24px rgba(0,0,0,.1);--shadow-lg:0 8px 48px rgba(0,0,0,.12)}[data-tema=light] body{background:var(--bg-base);color:var(--text-primary)}[data-tema=light] .app{background:radial-gradient(ellipse 80% 40% at 10% 0%,rgba(79,118,245,.07) 0%,transparent 60%),radial-gradient(ellipse 60% 50% at 90% 100%,rgba(20,184,166,.05) 0%,transparent 60%),var(--bg-base)}[data-tema=light] .sidebar{background:var(--bg-sidebar)}[data-tema=light] .nav-item{color:#ffffffa6}[data-tema=light] .nav-item:hover{background:#ffffff1a;color:#ffffffe6}[data-tema=light] .nav-item.active{background:#4f76f540;color:#fff}[data-tema=light] .nav-section{color:#ffffff59}[data-tema=light] .user-card{background:#ffffff14;border-color:#ffffff1f}[data-tema=light] .user-name,[data-tema=light] .user-role{color:#ffffffd9}[data-tema=light] .panel,[data-tema=light] .card{background:var(--bg-card);border-color:var(--border);box-shadow:var(--shadow-sm)}[data-tema=light] .topbar{background:#ffffffeb;border-color:var(--border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}[data-tema=light] .topbar-title{color:var(--text-primary)}[data-tema=light] .topbar-sub{color:var(--text-muted)}[data-tema=light] .topbar-btn{color:var(--text-secondary)}[data-tema=light] .topbar-btn:hover{background:var(--bg-elevated);color:var(--text-primary)}[data-tema=light] .form-input,[data-tema=light] .form-select,[data-tema=light] .form-textarea{background:var(--bg-input);border-color:var(--border);color:var(--text-primary)}[data-tema=light] .form-input:focus,[data-tema=light] .form-select:focus,[data-tema=light] .form-textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px #4f76f526}[data-tema=light] table th{background:var(--bg-surface);color:var(--text-secondary)}[data-tema=light] table tr:hover td{background:var(--bg-surface)}[data-tema=light] .search-box{background:var(--bg-input);border-color:var(--border)}[data-tema=light] .search-box input{color:var(--text-primary)}[data-tema=light] .search-box input::placeholder{color:var(--text-muted)}[data-tema=light] ::-webkit-scrollbar-thumb{background:#c0cde0}[data-tema=light] ::-webkit-scrollbar-thumb:hover{background:#a0b8d8}[data-tema=light] .lesson-item{color:var(--text-secondary)}[data-tema=light] .lesson-list{background:var(--bg-surface);border-color:var(--border)}[data-tema=light] .lesson-pane{background:var(--bg-card)}[data-tema=light] .module-label{color:var(--text-secondary)}[data-tema=light] pre,[data-tema=light] code{background:var(--bg-surface)}[data-tema=light] .chip{background:var(--bg-surface);border-color:var(--border);color:var(--text-secondary)}[data-tema=light] .btn-ghost{color:var(--text-secondary)}[data-tema=light] .btn-ghost:hover{background:var(--bg-surface)}[data-tema=light] .btn-secondary{background:var(--bg-surface);border-color:var(--border);color:var(--text-primary)}[data-tema=light] .btn-secondary:hover{background:var(--border)}[data-tema=light] .login-card{background:#fff;box-shadow:0 8px 48px #0000001f}[data-tema=light] .msg-item:hover{background:var(--bg-surface)}[data-tema=light] .event-item{border-color:var(--border)}[data-tema=light] .event-item:hover{background:var(--bg-surface)}[data-tema=light] .question-block{background:var(--bg-surface);border-color:var(--border)}[data-tema=light] .option-label{background:var(--bg-input);border-color:var(--border);color:var(--text-primary)}[data-tema=light] .stat-card{background:var(--bg-card);border-color:var(--border)}[data-tema=light] .pbar-wrap{background:var(--border)}.student-hero{background:linear-gradient(135deg,#4f76f526,#14b8a61a);border:1px solid var(--border);border-radius:var(--r-2xl);padding:24px 28px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:24px}.student-hero-greeting{display:flex;align-items:center;gap:16px}.student-avatar-lg{width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--teal));display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;color:#fff;flex-shrink:0;box-shadow:0 4px 14px #4f76f559}.student-hello{font-size:18px;font-weight:700;color:var(--text-primary)}.student-hello-sub{font-size:13px;color:var(--text-muted);margin-top:2px}.student-stats-strip{display:flex;gap:24px;flex-wrap:wrap}.student-mini-stat{text-align:center;min-width:70px}.student-mini-val{font-size:22px;font-weight:800;line-height:1.1}.student-mini-lbl{font-size:11px;color:var(--text-muted);margin-top:3px}.filter-pill{padding:6px 14px;border-radius:20px;border:1px solid var(--border);background:var(--bg-elevated);color:var(--text-muted);font-size:12.5px;font-weight:600;cursor:pointer;transition:all var(--t);font-family:var(--font)}.filter-pill:hover{border-color:var(--primary);color:var(--primary-light)}.filter-pill.active{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 2px 10px #4f76f54d}.course-grid-student{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}.course-card-student{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--r-xl);overflow:hidden;cursor:pointer;transition:all var(--t-slow);display:flex;flex-direction:column}.course-card-student:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:0 12px 40px #4f76f533}.ccs-cover{position:relative;overflow:hidden}.ccs-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#00000059;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity var(--t)}.course-card-student:hover .ccs-overlay{opacity:1}.ccs-play-btn{width:52px;height:52px;border-radius:50%;background:#fff3;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);border:2px solid rgba(255,255,255,.6);display:flex;align-items:center;justify-content:center}.ccs-done-ribbon{position:absolute;top:10px;left:10px;background:var(--emerald);color:#fff;padding:3px 10px;border-radius:20px;font-size:11px;font-weight:700;display:flex;align-items:center;gap:4px}.ccs-pct{position:absolute;bottom:10px;right:10px;padding:3px 9px;border-radius:20px;font-size:12px;font-weight:800;border:1.5px solid rgba(255,255,255,.3)}.ccs-body{padding:16px;display:flex;flex-direction:column;flex:1}.ccs-meta{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:8px}.ccs-title{font-size:15px;font-weight:800;margin-bottom:6px;color:var(--text-primary);line-height:1.3}.ccs-desc{font-size:12.5px;color:var(--text-muted);line-height:1.5;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.ccs-footer{margin-top:auto}.ccs-prog-wrap{margin-bottom:6px}.ccs-pbar-bg{height:5px;background:var(--border);border-radius:3px;overflow:hidden}.ccs-pbar-fill{height:100%;background:var(--primary);border-radius:3px;transition:width .5s ease}.ccs-action{display:flex;justify-content:flex-end;margin-top:12px}.ccs-action-btn{display:inline-flex;align-items:center;gap:4px;font-size:12.5px;font-weight:700;color:var(--primary-light);padding:5px 12px;border-radius:20px;border:1.5px solid rgba(79,118,245,.3);background:var(--primary-glow);transition:all var(--t)}.course-card-student:hover .ccs-action-btn{background:var(--primary);color:#fff;border-color:var(--primary)}.student-profile-card{display:grid;grid-template-columns:auto 1fr auto auto;align-items:start;gap:18px;padding:20px 24px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--r-xl);margin-bottom:20px}@media (max-width:720px){.student-profile-card{grid-template-columns:auto 1fr}}.spc-avatar{width:54px;height:54px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--teal));display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;color:#fff;flex-shrink:0}.spc-name{font-size:17px;font-weight:800;margin-bottom:3px}.spc-email{font-size:12.5px;color:var(--text-muted)}.spc-org{font-size:12px;color:var(--teal);margin-top:4px;display:flex;align-items:center;gap:4px}.spc-badges{display:flex;gap:6px;flex-wrap:wrap;align-items:flex-start}.spc-meta-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.spc-meta-item span{font-size:11px;color:var(--text-muted);display:block;margin-bottom:2px}.spc-meta-item strong{font-size:13px;font-weight:700}.activity-log{display:flex;flex-direction:column;gap:0}.alog-item{display:flex;align-items:flex-start;gap:12px;padding:10px 0;border-bottom:1px solid var(--border)}.alog-item:last-child{border-bottom:none}.alog-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0;margin-top:5px}.alog-body{flex:1}.alog-action{font-size:13px;font-weight:600;text-transform:capitalize}.alog-time{font-size:11px;color:var(--text-muted);white-space:nowrap}.org-chip{font-size:11.5px;padding:3px 9px;background:var(--teal-dim);border:1px solid rgba(20,184,166,.25);border-radius:20px;color:var(--teal);font-weight:600}[data-tema=light] .student-hero{background:linear-gradient(135deg,#4f76f514,#14b8a60f)}[data-tema=light] .course-card-student{background:#fff}[data-tema=light] .filter-pill{background:#f0f4fa}[data-tema=light] .filter-pill.active{color:var(--primary)}[data-tema=light] .student-profile-card{background:#fff}[data-tema=light] .ccs-pbar-bg{background:var(--border)}.player-header{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--r-xl);padding:16px 20px;margin-bottom:16px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.player-breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.player-back-btn{display:flex;align-items:center;gap:5px;background:var(--bg-elevated);border:1px solid var(--border);color:var(--text-muted);border-radius:20px;padding:5px 12px;font-size:12.5px;font-weight:600;cursor:pointer;font-family:var(--font);transition:all var(--t)}.player-back-btn:hover{border-color:var(--primary);color:var(--primary-light)}.player-sep{color:var(--text-muted)}.player-course-title{font-size:14px;font-weight:800;color:var(--text-primary)}.player-progress-section{display:flex;flex-direction:column;gap:6px;min-width:220px}.player-progress-stats{display:flex;gap:8px;flex-wrap:wrap}.player-stat-pill{display:inline-flex;align-items:center;gap:5px;font-size:11.5px;font-weight:700;padding:3px 10px;border-radius:20px;border:1px solid var(--border);background:var(--bg-elevated);color:var(--text-muted)}.player-global-bar{height:4px;background:var(--border);border-radius:2px;overflow:hidden}.player-global-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--teal));border-radius:2px;transition:width .6s ease}.lesson-pane-header{margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid var(--border)}.lesson-pane-title-row{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;flex-wrap:wrap}.lesson-pane-meta{display:flex;gap:6px;flex-wrap:wrap;align-items:center;margin-bottom:8px}.lesson-pane-h2{font-size:22px;font-weight:800;letter-spacing:-.4px;color:var(--text-primary);line-height:1.2}.lesson-duration{display:inline-flex;align-items:center;gap:4px;font-size:11.5px;color:var(--text-muted);padding:2px 8px;background:var(--bg-elevated);border-radius:12px;border:1px solid var(--border)}.complete-btn{display:inline-flex;align-items:center;gap:6px;flex-shrink:0;padding:9px 18px;border-radius:var(--r-md);border:none;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;font-size:13px;font-weight:700;cursor:pointer;font-family:var(--font);transition:all var(--t);box-shadow:0 4px 14px #4f76f54d}.complete-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 20px #4f76f566}.complete-btn:disabled{opacity:.6;cursor:not-allowed}.completed-badge{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:var(--r-md);background:var(--emerald-dim);border:1px solid rgba(16,185,129,.3);color:var(--emerald);font-size:13px;font-weight:700}.quiz-start-screen{text-align:center;padding:40px 24px}.quiz-start-icon{width:76px;height:76px;border-radius:50%;background:var(--amber-dim);border:2px solid rgba(245,158,11,.25);display:flex;align-items:center;justify-content:center;margin:0 auto 20px}.quiz-start-title{font-size:20px;font-weight:800;margin-bottom:8px;color:var(--text-primary)}.quiz-start-desc{font-size:13.5px;color:var(--text-muted);margin-bottom:20px;line-height:1.6}.quiz-start-meta{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:28px}.quiz-meta-chip{display:inline-flex;align-items:center;gap:5px;padding:5px 12px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:20px;font-size:12px;font-weight:600;color:var(--text-secondary)}.quiz-result-screen{text-align:center;padding:40px 24px}.quiz-result-icon{width:76px;height:76px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 20px}.quiz-result-title{font-size:22px;font-weight:800;margin-bottom:12px}.quiz-result-score{font-size:48px;font-weight:900;margin-bottom:20px;line-height:1}.quiz-result-meta{display:flex;gap:16px;justify-content:center;margin-bottom:28px;flex-wrap:wrap}.quiz-result-meta-item{text-align:center;padding:12px 20px;background:var(--bg-elevated);border-radius:var(--r-md);border:1px solid var(--border);min-width:120px}.quiz-result-meta-item span{font-size:11px;color:var(--text-muted);display:block;margin-bottom:4px}.quiz-result-meta-item strong{font-size:18px;font-weight:800}.notif-list{display:flex;flex-direction:column;gap:0}.notif-item-v2{display:flex;align-items:flex-start;gap:12px;padding:14px 0;border-bottom:1px solid var(--border);transition:background var(--t)}.notif-item-v2:last-child{border-bottom:none}.notif-item-v2.unread{background:#4f76f50a;margin:0 -4px;padding-left:4px;padding-right:4px;border-radius:var(--r-md)}.notif-icon-wrap{width:36px;height:36px;border-radius:10px;background:var(--bg-elevated);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--text-muted);transition:all var(--t)}.notif-icon-wrap.unread{background:var(--primary-glow);border-color:#4f76f54d;color:var(--primary-light)}.notif-v2-title{font-size:13.5px;font-weight:700;margin-bottom:3px;color:var(--text-primary)}.notif-v2-body{font-size:12.5px;color:var(--text-muted);line-height:1.5;margin-bottom:5px}.notif-v2-time{font-size:11px;color:var(--text-muted);display:flex;align-items:center;gap:4px}.notif-read-btn{width:28px;height:28px;border-radius:50%;border:1px solid var(--border);background:var(--bg-elevated);color:var(--text-muted);display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:all var(--t)}.notif-read-btn:hover{background:var(--emerald-dim);border-color:var(--emerald);color:var(--emerald)}.lesson-list{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--r-2xl);overflow:hidden;align-self:start;position:sticky;top:16px;max-height:calc(100vh - 180px);display:flex;flex-direction:column}.lesson-list-header{padding:14px 16px;border-bottom:1px solid var(--border);font-size:13px;font-weight:800;display:flex;align-items:center;gap:6px;flex-shrink:0}.lesson-list-scroll{overflow-y:auto;flex:1}.lesson-list-scroll::-webkit-scrollbar{width:4px}.lesson-list-scroll::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}.module-label{padding:10px 14px 7px;font-size:10.5px;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em;background:#ffffff05;display:flex;align-items:center;gap:6px;border-top:1px solid var(--border)}.module-label:first-child{border-top:none}[data-tema=light] .player-header{background:#fff}[data-tema=light] .player-back-btn{background:#f0f4fa}[data-tema=light] .lesson-pane-h2{color:var(--text-primary)}[data-tema=light] .notif-item-v2.unread{background:#4f76f50d}[data-tema=light] .quiz-start-screen,[data-tema=light] .quiz-result-screen{background:transparent}