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var(--transition-normal);min-width:140px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L2 4h8z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:left 12px center;padding:10px 16px 10px 32px}.filter-select:focus{outline:none;border-color:var(--blue-500);box-shadow:0 0 0 3px #3b82f61a}.filter-select:hover{border-color:var(--blue-500)}.video-hero-section{margin-bottom:40px}.video-hero-card{position:relative;height:450px;border-radius:var(--radius-3xl);overflow:hidden;display:block;cursor:pointer}.video-hero-bg{width:100%;height:100%;-o-object-fit:cover;object-fit:cover;transition:transform var(--transition-slower)}.video-hero-card:hover .video-hero-bg{transform:scale(1.05)}.video-hero-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,.95) 0%,rgba(0,0,0,.4) 50%,transparent 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var(--border-default);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--text-primary);font-size:16px;cursor:pointer;z-index:10;transition:all var(--transition-normal);box-shadow:var(--shadow-md)}.scroll-btn:hover{background:var(--blue-500);color:#fff;border-color:var(--blue-500)}.scroll-btn-right{right:-22px}.scroll-btn-left{left:-22px}.video-row-container{display:flex;gap:20px;overflow-x:auto;scroll-behavior:smooth;padding:8px 4px 16px;scrollbar-width:none;-ms-overflow-style:none}.video-row-container::-webkit-scrollbar{display:none}.video-card{flex-shrink:0;width:280px;background:var(--bg-card);border-radius:var(--radius-xl);overflow:hidden;border:1px solid var(--border-light);transition:all var(--transition-slow);cursor:pointer;text-decoration:none;display:block}.video-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--border-default)}.video-card-thumb{position:relative;height:160px;overflow:hidden}.video-card-thumb 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8px;border-radius:10px;font-weight:600;font-size:11px}.video-card-difficulty.success{background:#d1fae5;color:#059669}.video-card-difficulty.warning{background:#fef3c7;color:#d97706}.video-card-difficulty.danger{background:#fee2e2;color:#dc2626}.video-card-series{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-secondary)}.video-card-series i{color:var(--blue-500)}.video-page .content-container{max-width:1400px}.video-layout{display:flex;flex-direction:row-reverse;gap:24px;position:relative;z-index:10}.video-container{flex:1;min-width:0}.video-hero{position:relative;border-radius:var(--radius-2xl);overflow:hidden;margin-bottom:24px;background:#000}.video-player-wrapper{position:relative;padding-bottom:56.25%;height:0}.video-player-wrapper iframe,.video-player-wrapper video,.video-player-wrapper blockquote{position:absolute;top:0;left:0;width:100%;height:100%}.video-player-wrapper 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var(--border-default);margin-top:0;margin-bottom:24px}.video-tag{padding:6px 14px;background:var(--bg-body);border:1px solid var(--border-default);border-radius:20px;font-size:12px;font-weight:600;color:var(--text-secondary);text-decoration:none;transition:all var(--transition-normal)}.video-tag:hover{background:var(--blue-500);color:#fff;border-color:var(--blue-500)}.share-section{background:#f9fafb;border-radius:var(--radius-xl);padding:20px;margin-bottom:24px}body.dark-mode .share-section{background:var(--dark-secondary)}.share-title{font-size:15px;font-weight:700;color:var(--text-primary);margin-bottom:14px}.share-buttons{display:flex;flex-wrap:wrap;gap:10px}.share-btn{width:44px;height:44px;border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;font-size:18px;color:#fff;cursor:pointer;transition:transform var(--transition-normal);border:none}.share-btn:hover{transform:scale(1.1)}.share-btn.twitter{background:#1da1f2}.share-btn.facebook{background:#1877f2}.share-btn.linkedin{background:#0a66c2}.share-btn.whatsapp{background:#25d366}.share-btn.telegram{background:#08c}.share-btn.copy{background:#64748b}.series-navigation{background:var(--bg-card);border:1px solid var(--border-default);border-radius:var(--radius-xl);padding:24px;margin-bottom:24px}.series-nav-buttons{display:grid;grid-template-columns:1fr 1fr;gap:16px}.series-nav-btn{display:flex;align-items:center;gap:14px;padding:16px 20px;background:var(--bg-hover);border:1px solid var(--border-light);border-radius:var(--radius-lg);text-decoration:none;transition:all var(--transition-normal)}.series-nav-btn:not(.placeholder):hover{background:#3b82f614;border-color:var(--blue-500)}.series-nav-btn.placeholder{opacity:0;pointer-events:none}.series-nav-btn i{font-size:18px;color:var(--blue-500)}.series-nav-btn 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i{color:var(--blue-500)}.sidebar-card-subtitle{font-size:12px;color:var(--text-muted);margin-top:-8px;margin-bottom:16px}.series-videos-list{display:flex;flex-direction:column;gap:8px;max-height:450px;overflow-y:auto;scrollbar-width:thin}.series-video-item{display:flex;align-items:center;gap:10px;padding:8px;border-radius:var(--radius-md);text-decoration:none;transition:all var(--transition-normal);border:1px solid transparent}.series-video-item:hover{background:var(--bg-hover)}.series-video-item.active{background:#3b82f614;border-color:var(--blue-500)}.series-video-number{width:24px;height:24px;background:var(--bg-hover);border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:var(--text-muted);flex-shrink:0}.series-video-item.active .series-video-number{background:var(--blue-500);color:#fff}.series-video-thumb{position:relative;width:80px;height:45px;border-radius:var(--radius-sm);overflow:hidden;flex-shrink:0}.series-video-thumb 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ease;border-radius:inherit;clip-path:inset(0 round 16px)}.poll-trigger:hover:before{left:100%}.poll-trigger:hover{transform:translateY(-3px) scale(1.03);box-shadow:0 8px 25px #6366f180,0 12px 40px #8b5cf666,inset 0 1px #ffffff4d}.poll-trigger:active{transform:translateY(-1px) scale(1.01)}.poll-trigger-icon{width:32px;height:32px;background:#fff3;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:14px;border:1px solid rgba(255,255,255,.1);transition:all .3s ease}.poll-trigger:hover .poll-trigger-icon{background:#ffffff4d;transform:rotate(-5deg)}.poll-trigger-text{white-space:nowrap;letter-spacing:.3px}.poll-trigger-badge{position:absolute;top:-12px;right:-14px;background:linear-gradient(135deg,#ef4444,#f97316);color:#fff;font-size:10px;font-weight:800;padding:6px 12px;border-radius:8px;letter-spacing:1px;text-transform:uppercase;box-shadow:0 4px 12px #ef444480,0 8px 24px #f973164d,inset 0 1px #ffffff4d;border:none;display:flex;align-items:center;gap:6px;animation:badgeFloat 2s ease-in-out infinite;transform-origin:center}.poll-trigger-badge:before{content:"";width:6px;height:6px;background:#fff;border-radius:50%;animation:liveDot 1s ease-in-out infinite;box-shadow:0 0 6px #fffc}@keyframes liveDot{0%,to{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.8)}}@keyframes badgeFloat{0%,to{transform:translateY(0) rotate(-2deg);box-shadow:0 4px 12px #ef444480,0 8px 24px #f973164d,inset 0 1px #ffffff4d}50%{transform:translateY(-3px) rotate(1deg);box-shadow:0 8px 20px #ef444499,0 12px 32px #f9731666,inset 0 1px #ffffff4d}}.poll-modal-overlay{position:fixed;inset:0;background:#000000b3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:9999;padding:20px;animation:modalFadeIn .3s ease}@keyframes modalFadeIn{0%{opacity:0}to{opacity:1}}.poll-modal{background:var(--bg-card);border-radius:24px;width:100%;max-width:480px;max-height:90vh;overflow:hidden;box-shadow:0 25px 80px #0000004d;animation:modalSlideUp .4s ease}@keyframes modalSlideUp{0%{opacity:0;transform:translateY(50px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.poll-modal-header{padding:24px 24px 16px;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;border-bottom:1px solid var(--border-color)}.poll-modal-title-wrapper{flex:1}.poll-live-badge{display:inline-flex;align-items:center;gap:6px;background:linear-gradient(135deg,#ef4444,#dc2626);color:#fff;font-size:11px;font-weight:700;padding:4px 12px;border-radius:20px;margin-bottom:12px;text-transform:uppercase;letter-spacing:.5px}.live-dot{width:6px;height:6px;background:#fff;border-radius:50%;animation:liveDotPulse 1s infinite}@keyframes liveDotPulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.8)}}.poll-modal-title{font-size:20px;font-weight:700;color:var(--text-primary);line-height:1.4;margin:0}.poll-modal-close{width:36px;height:36px;border:none;background:var(--bg-hover);border-radius:10px;color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;flex-shrink:0}.poll-modal-close:hover{background:#ef4444;color:#fff}.poll-modal-body{padding:24px;max-height:calc(90vh - 180px);overflow-y:auto}.poll-description{color:var(--text-secondary);font-size:14px;line-height:1.6;margin-bottom:24px}.poll-description:empty{display:none}.poll-options{display:flex!important;flex-direction:column!important;gap:12px!important;margin-bottom:20px!important}.poll-option{display:block!important;cursor:pointer!important;position:relative!important}.poll-option-input{position:absolute!important;opacity:0!important;pointer-events:none!important;width:0!important;height:0!important}.poll-option-box{display:flex!important;align-items:center!important;gap:14px!important;padding:16px 20px!important;background:var(--bg-secondary, #f8fafc)!important;border:2px solid var(--border-color, #e2e8f0)!important;border-radius:14px!important;transition:all .2s ease!important}body.dark-mode .poll-option-box{background:var(--bg-secondary, #1e293b)!important;border-color:var(--border-color, #334155)!important}.poll-option:hover .poll-option-box{border-color:var(--blue-500, #3b82f6)!important;background:var(--bg-hover, #f1f5f9)!important}body.dark-mode .poll-option:hover .poll-option-box{background:var(--bg-hover, #334155)!important}.poll-option.selected .poll-option-box,.poll-option-input:checked+.poll-option-box{border-color:var(--blue-500, #6366f1)!important;background:#6366f11a!important}.poll-option-indicator{width:22px!important;height:22px!important;min-width:22px!important;border:2px solid var(--border-color, #cbd5e1)!important;border-radius:50%!important;display:flex!important;align-items:center!important;justify-content:center!important;transition:all .2s!important;flex-shrink:0!important;background:transparent!important}.poll-option-input:checked+.poll-option-box .poll-option-indicator{border-color:var(--blue-500, #6366f1)!important;background:var(--blue-500, #6366f1)!important}.poll-option-input:checked+.poll-option-box .poll-option-indicator:after{content:""!important;width:8px!important;height:8px!important;background:#fff!important;border-radius:50%!important;display:block!important}.poll-option-input[type=checkbox]+.poll-option-box .poll-option-indicator{border-radius:6px!important}.poll-option-input[type=checkbox]:checked+.poll-option-box .poll-option-indicator:after{content:""!important;font-family:"Font Awesome 6 Free"!important;font-weight:900!important;font-size:12px!important;color:#fff!important;border-radius:0!important;width:auto!important;height:auto!important;background:none!important}.poll-option-text{flex:1!important;font-size:15px!important;font-weight:500!important;color:var(--text-primary, #1e293b)!important;line-height:1.4!important}body.dark-mode .poll-option-text{color:var(--text-primary, #f1f5f9)!important}.poll-max-note{font-size:12px!important;color:var(--text-muted, #94a3b8)!important;text-align:center!important;margin-top:8px!important}.poll-results{display:flex;flex-direction:column;gap:16px;margin-bottom:20px}.poll-result-item{padding:16px;background:var(--bg-secondary);border-radius:12px;border:1px solid var(--border-color)}.poll-result-item.user-voted{border-color:var(--blue-500);background:#6366f10d}.poll-result-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}.poll-result-text{font-size:14px;font-weight:600;color:var(--text-primary);display:flex;align-items:center;gap:8px}.poll-result-text i{color:var(--blue-500)}.poll-result-percentage{font-size:18px;font-weight:700;color:var(--blue-500)}.poll-result-bar{height:8px;background:var(--bg-hover);border-radius:10px;overflow:hidden;margin-bottom:8px}.poll-result-fill{height:100%;background:linear-gradient(90deg,#6366f1,#8b5cf6);border-radius:10px;transition:width .8s ease}.poll-result-votes{font-size:12px;color:var(--text-muted)}.poll-submit-btn{width:100%;display:flex;align-items:center;justify-content:center;gap:10px;padding:16px 24px;background:linear-gradient(135deg,#6366f1,#8b5cf6);border:none;border-radius:14px;color:#fff;font-family:inherit;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s;margin-top:8px}.poll-submit-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 24px #6366f166}.poll-submit-btn:disabled{opacity:.7;cursor:not-allowed}.poll-stats{display:flex;align-items:center;justify-content:center;gap:24px;padding:16px;background:var(--bg-secondary);border-radius:12px;margin-top:16px}.poll-stat{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-secondary)}.poll-stat i{color:var(--blue-500)}.poll-stat span{font-weight:700;color:var(--text-primary)}.poll-voted-message{display:flex;align-items:center;justify-content:center;gap:10px;padding:14px;background:#10b9811a;border:1px solid rgba(16,185,129,.3);border-radius:12px;color:#10b981;font-size:14px;font-weight:600;margin-top:16px}.poll-modal-footer{padding:16px 24px;background:var(--bg-secondary);border-top:1px solid var(--border-color);text-align:center}.poll-footer-note{font-size:12px;color:var(--text-muted);display:flex;align-items:center;justify-content:center;gap:6px}.poll-footer-note i{color:var(--green-500)}.poll-toast{position:fixed;bottom:30px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:10px;padding:14px 24px;background:var(--bg-card);border-radius:12px;box-shadow:0 8px 32px #0003;font-size:14px;font-weight:500;color:var(--text-primary);z-index:10000;animation:toastSlideUp .3s ease}@keyframes toastSlideUp{0%{opacity:0;transform:translate(-50%) translateY(20px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.poll-toast-hide{animation:toastSlideDown .3s ease forwards}@keyframes toastSlideDown{0%{opacity:1;transform:translate(-50%) translateY(0)}to{opacity:0;transform:translate(-50%) translateY(20px)}}.poll-toast-success i{color:#10b981}.poll-toast-error i{color:#ef4444}.poll-toast-warning i{color:#f59e0b}.poll-toast-info i{color:#3b82f6}@media(max-width:768px){.poll-widget{bottom:80px;left:16px}.poll-gif-wrapper{width:120px;height:120px;border-radius:18px;margin-bottom:10px}.poll-gif{border-radius:15px}.poll-trigger{width:120px;padding:12px 20px;font-size:14px;border-radius:14px}.poll-trigger-icon{width:28px;height:28px;font-size:12px;border-radius:8px}.poll-modal{max-width:100%;border-radius:24px 24px 0 0;max-height:85vh}.poll-modal-overlay{align-items:flex-end;padding:0}.poll-modal-header{padding:20px 20px 14px}.poll-modal-title{font-size:18px}.poll-modal-body{padding:20px}.poll-option-box{padding:14px 16px}}@media(max-width:500px){.poll-gif-wrapper{width:100px;height:100px;border-radius:18px;padding:3px;margin-bottom:10px}.poll-gif{border-radius:15px}.poll-trigger-text{display:none}.poll-trigger{width:100px;padding:18px;border-radius:14px}.poll-trigger-icon{margin:0;width:32px;height:32px;font-size:14px}.poll-trigger-badge{top:-10px;right:-12px;padding:5px 10px;font-size:9px;border-radius:6px}.poll-trigger-badge:before{width:5px;height:5px}}