@import "https://fonts.googleapis.com/css2?family=Noto+Sans+Thai:wght@300;400;500;600;700&family=Inter:wght@400;500;600;700&display=swap";:root{--primary:#1a8a7d;--primary-light:#22b8a8;--primary-dark:#11655b;--primary-bg:#e8f5f3;--secondary:#f59e0b;--secondary-light:#fbbf24;--accent:#3b82f6;--success:#22c55e;--warning:#f59e0b;--danger:#ef4444;--bg:#f0f4f3;--bg-card:#fff;--bg-sidebar:#fff;--text:#1e293b;--text-dim:#64748b;--text-muted:#94a3b8;--border:#e2e8f0;--border-light:#f1f5f9;--shadow-sm:0 1px 3px #0000000f;--shadow-md:0 4px 12px #00000014;--shadow-lg:0 8px 30px #0000001a;--shadow-card:0 2px 8px #0000000f;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:20px;--transition:all .2s ease;color:var(--text);font-family:Noto Sans Thai,Inter,system-ui,sans-serif;line-height:1.6}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);-webkit-font-smoothing:antialiased;min-height:100vh}a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:inherit}.layout{min-height:100vh;display:flex}.sidebar{background:var(--bg-card);border-right:1px solid var(--border);z-index:40;flex-direction:column;width:240px;padding:24px 16px;display:flex;position:fixed;top:0;bottom:0;left:0}.sidebar-logo{border-bottom:1px solid var(--border);align-items:center;gap:10px;margin-bottom:20px;padding:0 8px 24px;display:flex}.sidebar-logo .logo-icon{background:var(--primary);border-radius:var(--radius-sm);color:#fff;justify-content:center;align-items:center;width:36px;height:36px;display:flex}.sidebar-logo span{color:var(--primary);font-size:15px;font-weight:700;line-height:1.2}.sidebar-nav{flex-direction:column;flex:1;gap:4px;display:flex}.sidebar-link{border-radius:var(--radius-sm);color:var(--text-dim);transition:var(--transition);text-align:left;background:0 0;border:none;align-items:center;gap:10px;width:100%;padding:10px 12px;font-size:14px;font-weight:500;display:flex}.sidebar-link:hover{background:var(--primary-bg);color:var(--primary)}.sidebar-link.active{background:var(--primary-bg);color:var(--primary);font-weight:600}.sidebar-link svg{flex-shrink:0;width:18px;height:18px}.main-content{flex:1;min-height:100vh;margin-left:240px;padding:24px 32px}.topbar{justify-content:flex-end;align-items:center;gap:12px;margin-bottom:24px;display:flex}.topbar-user{background:var(--bg-card);border:1px solid var(--border);border-radius:100px;align-items:center;gap:10px;padding:6px 12px;display:flex}.topbar-avatar{background:linear-gradient(135deg, var(--primary), var(--primary-light));color:#fff;border-radius:50%;justify-content:center;align-items:center;width:32px;height:32px;font-size:13px;font-weight:600;display:flex}.card{background:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border);box-shadow:var(--shadow-card);padding:24px}.stat-card{background:var(--bg-card);border-radius:var(--radius-md);border:1px solid var(--border);box-shadow:var(--shadow-sm);align-items:center;gap:16px;padding:20px;display:flex}.stat-icon{border-radius:var(--radius-sm);flex-shrink:0;justify-content:center;align-items:center;width:48px;height:48px;display:flex}.stat-icon.blue{color:#3b82f6;background:#dbeafe}.stat-icon.green{color:#22c55e;background:#dcfce7}.stat-icon.amber{color:#f59e0b;background:#fef3c7}.stat-icon.red{color:#ef4444;background:#fee2e2}.stat-value{font-size:28px;font-weight:700;line-height:1}.stat-label{color:var(--text-dim);margin-top:2px;font-size:13px}.course-card{background:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border);box-shadow:var(--shadow-sm);transition:var(--transition);cursor:pointer;overflow:hidden}.course-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}.course-card-img{background:linear-gradient(135deg, var(--primary-bg), #d1fae5);justify-content:center;align-items:center;height:140px;display:flex;position:relative;overflow:hidden}.course-card-img img{object-fit:cover;width:100%;height:100%}.course-card-body{padding:16px}.course-card-title{margin-bottom:8px;font-size:15px;font-weight:600;line-height:1.4}.course-status{border-radius:100px;align-items:center;gap:4px;padding:4px 10px;font-size:12px;font-weight:600;display:inline-flex}.course-status.completed{color:#16a34a;background:#dcfce7}.course-status.in-progress{color:#2563eb;background:#dbeafe}.progress-bar-container{background:var(--border);border-radius:100px;width:100%;height:6px;margin-top:8px;overflow:hidden}.progress-bar-fill{background:var(--primary);border-radius:100px;height:100%;transition:width .5s}.btn{border-radius:var(--radius-sm);transition:var(--transition);cursor:pointer;border:none;justify-content:center;align-items:center;gap:8px;padding:10px 20px;font-size:14px;font-weight:600;display:inline-flex}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 12px #1a8a7d4d}.btn-outline{color:var(--primary);border:1.5px solid var(--primary);background:0 0}.btn-outline:hover{background:var(--primary-bg)}.btn-google{color:#1e293b;border:1.5px solid var(--border);border-radius:var(--radius-md);background:#fff;width:100%;padding:12px 20px;font-size:15px}.btn-google:hover{background:#f8fafc;border-color:#cbd5e1}.btn-microsoft{color:#1e293b;border:1.5px solid var(--border);border-radius:var(--radius-md);background:#fff;width:100%;padding:12px 20px;font-size:15px}.btn-microsoft:hover{background:#f8fafc;border-color:#cbd5e1}.btn-pdf{background:var(--primary);color:#fff;border-radius:var(--radius-sm);align-items:center;gap:6px;padding:8px 16px;font-size:13px;display:inline-flex}.btn-pdf:hover{background:var(--primary-dark)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:#dc2626}.btn-success{background:var(--success);color:#fff}.btn-success:hover{background:#16a34a}.btn-warning{background:var(--warning);color:#fff}.auth-page{background:linear-gradient(135deg,#e8f5f3 0%,#d1fae5 50%,#f0fdfa 100%);justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.auth-card{border-radius:var(--radius-xl);width:100%;max-width:420px;box-shadow:var(--shadow-lg);text-align:center;background:#fff;padding:40px}.auth-logo{flex-direction:column;align-items:center;gap:8px;margin-bottom:28px;display:flex}.auth-logo .logo-circle{background:var(--primary);border-radius:var(--radius-md);color:#fff;justify-content:center;align-items:center;width:64px;height:64px;display:flex}.auth-logo h1{color:var(--primary);font-size:18px;font-weight:700}.auth-title{color:var(--text);margin-bottom:24px;font-size:22px;font-weight:700}.auth-buttons{flex-direction:column;gap:12px;margin-bottom:20px;display:flex}.auth-footer{color:var(--text-muted);margin-top:16px;font-size:13px}.section-title{margin-bottom:16px;font-size:20px;font-weight:700}.greeting{margin-bottom:24px}.greeting h1{color:var(--primary-dark);font-size:24px;font-weight:700}.greeting p{color:var(--text-dim);font-size:15px}.grid-2{grid-template-columns:repeat(2,1fr);gap:16px;display:grid}.grid-3{grid-template-columns:repeat(3,1fr);gap:16px;display:grid}.grid-4{grid-template-columns:repeat(4,1fr);gap:16px;display:grid}@media (width<=1024px){.grid-4,.grid-3{grid-template-columns:repeat(2,1fr)}}@media (width<=640px){.grid-4,.grid-3,.grid-2{grid-template-columns:1fr}.sidebar{display:none}.main-content{margin-left:0;padding:16px}}.table-container{overflow-x:auto}table{border-collapse:collapse;width:100%}table th{text-align:left;color:var(--text-dim);background:var(--border-light);border-bottom:1px solid var(--border);padding:12px 16px;font-size:13px;font-weight:600}table td{border-bottom:1px solid var(--border-light);padding:12px 16px;font-size:14px}table tr:hover td{background:#f8fffe}.lesson-layout{grid-template-columns:1fr 380px;gap:24px;display:grid}@media (width<=1024px){.lesson-layout{grid-template-columns:1fr}}.video-container{border-radius:var(--radius-lg);aspect-ratio:16/9;background:#000;position:relative;overflow:hidden}.video-container iframe{border:none;width:100%;height:100%}.lesson-sidebar{flex-direction:column;gap:12px;display:flex}.lesson-step{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);cursor:pointer;transition:var(--transition);align-items:flex-start;gap:12px;padding:12px 16px;display:flex}.lesson-step:hover,.lesson-step.active{border-color:var(--primary);background:var(--primary-bg)}.lesson-step-num{background:var(--primary);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:13px;font-weight:700;display:flex}.lesson-step-num.done{background:var(--success)}.lesson-step-title{font-size:14px;font-weight:500}.lesson-step-sub{color:var(--text-dim);margin-top:2px;font-size:12px}.assignment-box{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);margin-top:20px;padding:20px}.assignment-box h3{color:var(--primary-dark);margin-bottom:12px;font-size:16px;font-weight:700}.assignment-box textarea,.assignment-box input[type=text]{border:1px solid var(--border);border-radius:var(--radius-sm);resize:vertical;width:100%;margin-bottom:12px;padding:10px 14px;font-family:inherit;font-size:14px}.assignment-box textarea:focus,.assignment-box input[type=text]:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px #1a8a7d1a}.badge{border-radius:100px;padding:3px 10px;font-size:12px;font-weight:600;display:inline-block}.badge-green{color:#16a34a;background:#dcfce7}.badge-blue{color:#2563eb;background:#dbeafe}.badge-red{color:#dc2626;background:#fee2e2}.badge-amber{color:#d97706;background:#fef3c7}.chart-area{background:var(--border-light);border-radius:var(--radius-md);align-items:flex-end;gap:8px;height:220px;padding:16px;display:flex}.chart-bar{background:var(--primary);border-radius:4px 4px 0 0;flex:1;min-height:8px;transition:background .2s;position:relative}.chart-bar:hover{background:var(--primary-light)}.chart-bar-label{color:var(--text-muted);white-space:nowrap;font-size:10px;position:absolute;bottom:-20px;left:50%;transform:translate(-50%)}.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}.mb-8{margin-bottom:32px}.mt-4{margin-top:16px}.mt-6{margin-top:24px}.text-center{text-align:center}.text-dim{color:var(--text-dim)}.text-sm{font-size:13px}.text-xs{font-size:12px}.font-bold{font-weight:700}.flex{display:flex}.flex-between{justify-content:space-between;align-items:center;display:flex}.gap-2{gap:8px}.gap-4{gap:16px}.items-center{align-items:center}@keyframes fadeInUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}@keyframes spin{to{transform:rotate(360deg)}}.animate-in{animation:.4s ease-out forwards fadeInUp}.animate-spin{animation:1s linear infinite spin}.stagger-1{opacity:0;animation-delay:50ms}.stagger-2{opacity:0;animation-delay:.1s}.stagger-3{opacity:0;animation-delay:.15s}.stagger-4{opacity:0;animation-delay:.2s}