#player-container{max-width:100%!important;aspect-ratio:16/9;margin:0 auto;border:none!important;box-shadow:0 10px 40px #0009!important;position:relative}.video-player-wrapper,#player-container{overflow:hidden!important;position:relative!important}#player-container iframe{position:absolute!important;top:-70px!important;left:0!important;width:100%!important;height:calc(100% + 140px)!important;border:none!important;pointer-events:auto!important}.video-player-wrapper{position:relative;max-width:1100px;aspect-ratio:16/9;margin:0 auto 25px;display:block;background:transparent;width:100%;padding:0 10px}a.lesson-card-link{text-decoration:none;color:inherit;display:block}.folder-header{background:#24262d;border-bottom:1px solid #30323a;border-left:4px solid transparent;padding:18px 20px;cursor:pointer;transition:all .2s ease}.folder-header:hover{background:#2a2c33;border-left-color:var(--main-color, #0084ff)}.folder-title{display:flex;align-items:center;gap:10px;font-weight:700;color:#fff;font-size:15px;margin-bottom:8px}.folder-icon{width:18px;height:18px;color:#a0a7b1}.folder-meta{display:flex;align-items:center;gap:12px;font-size:12px;color:#a0a7b1;padding-left:28px}.meta-pill{display:flex;align-items:center;gap:6px}.meta-pill svg{width:12px;height:12px}.meta-divider{height:12px;width:1px;background:#4a4e56}.folder-arrow{margin-left:auto;width:16px;transition:transform .3s}:root{--bg-dark: #0f0f0f;--bg-panel: #161616;--bg-hover: #1f1f1f;--accent: #0084ff;--accent-glow: rgba(0, 132, 255, .15);--success: #00e676;--text-main: #ffffff;--text-muted: #888888;--border-subtle: rgba(255, 255, 255, .08)}*{box-sizing:border-box;margin:0;padding:0}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--bg-dark)}::-webkit-scrollbar-thumb{background:#333;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#555}body{background-color:var(--bg-dark);color:var(--text-main);font-family:Inter,sans-serif;height:100vh;overflow:hidden;-webkit-font-smoothing:antialiased}.curso-layout{display:flex;width:100%;height:100vh}.video-container{flex-grow:1;display:flex;flex-direction:column;background-color:var(--bg-dark);position:relative;overflow-y:auto;padding-top:20px}.video-header{padding:0 40px 15px;width:100%;max-width:1180px;margin:0 auto}.video-header h1{font-size:1.6rem;font-weight:600;letter-spacing:-.02em;line-height:1.2;color:#fff}.toggle-btn{position:absolute;top:20px;right:20px;background:#1e1e1ecc;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);color:#fff;border:1px solid var(--border-subtle);border-radius:8px;width:40px;height:40px;display:flex;align-items:center;justify-content:center;font-size:1rem;cursor:pointer;z-index:100;transition:all .3s ease}.toggle-btn:hover{background:var(--accent);border-color:var(--accent);transform:scale(1.05)}.video-details{padding:0 40px 60px;max-width:1180px;margin:0 auto;width:100%}.video-details p{color:#b0b0b0;line-height:1.7;font-size:1rem;font-weight:300}aside{background-color:var(--bg-panel);border-left:1px solid var(--border-subtle);display:flex;flex-direction:column}.sidebar-header{background-color:var(--bg-panel);padding:20px;border-bottom:1px solid var(--border-subtle);min-height:70px;display:flex;align-items:center}.sidebar-header h2,.sidebar-header h3{font-size:.9rem;text-transform:uppercase;letter-spacing:.08em;font-weight:700;color:var(--text-muted)}.sidebar-content{overflow-y:auto;flex-grow:1}.chapters-sidebar{width:0;overflow:hidden;transition:width .4s cubic-bezier(.25,.8,.25,1);border-right:1px solid var(--border-subtle);border-left:none}.chapters-sidebar.active{width:300px}.chapter-list{list-style:none;padding:20px 0}.chapter-item{padding:12px 20px;cursor:pointer;display:flex;gap:15px;position:relative;transition:background .2s}.chapter-item:hover{background-color:var(--bg-hover)}.timeline-marker{width:2px;background-color:#333;position:relative;margin-left:5px}.timeline-marker:after{content:"";width:8px;height:8px;background-color:#555;border-radius:50%;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);transition:all .3s ease}.chapter-item.active .timeline-marker:after{background-color:var(--accent);box-shadow:0 0 12px var(--accent);width:10px;height:10px}.chapter-info{display:flex;flex-direction:column;gap:4px}.chapter-info .title{font-size:.9rem;color:#ccc;font-weight:400;transition:color .2s}.chapter-item.active .title{color:var(--accent);font-weight:600}.chapter-info .time{font-size:.75rem;color:#666;font-family:Inter,monospace}.playlist-sidebar{width:350px;flex-shrink:0}.sidebar-header-col{background-color:var(--bg-panel);padding:20px;border-bottom:1px solid var(--border-subtle);display:flex;flex-direction:column;gap:10px}.sidebar-title-row{display:flex;justify-content:space-between;align-items:center}.sidebar-title-row h2{font-size:.9rem;text-transform:uppercase;letter-spacing:.08em;font-weight:700;color:var(--text-muted);margin:0}.progress-text{font-size:.75rem;color:var(--accent);font-weight:600}.progress-bar-track{width:100%;height:6px;background-color:#2a2a2a;border-radius:3px;overflow:hidden}.progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--accent) 0%,#00c6ff 100%);width:0%;transition:width .5s cubic-bezier(.25,.8,.25,1);box-shadow:0 0 10px #0084ff4d}.section-divider{background:#111;padding:12px 20px;font-size:.75rem;font-weight:700;color:#666;text-transform:uppercase;letter-spacing:.05em;border-bottom:1px solid var(--border-subtle);border-top:1px solid var(--border-subtle)}.lesson-card{display:flex;gap:15px;padding:15px 20px;border-bottom:1px solid var(--border-subtle);cursor:pointer;transition:transform .2s ease,background-color .2s;background-color:var(--bg-panel)}.lesson-card:hover{background-color:var(--bg-hover);transform:translate(-4px)}.lesson-card.active{background:linear-gradient(90deg,rgba(0,132,255,.08) 0%,transparent 100%);border-left:3px solid var(--accent)}.lesson-card.active h4{color:var(--accent)}.lesson-thumb{width:110px;height:62px;background:#000;border-radius:6px;overflow:hidden;position:relative;flex-shrink:0}.lesson-thumb img{width:100%;height:100%;object-fit:cover;opacity:.7;transition:opacity .3s}.lesson-card:hover .lesson-thumb img{opacity:1}.playing-overlay,.check-overlay{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s}.playing-overlay{background:#0009;color:var(--accent);opacity:1}.check-overlay{background:#00e676d9;color:#0bef53}.lesson-card.completed .lesson-thumb{border:2px solid #00c853;box-sizing:border-box}.lesson-card.completed .check-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:transparent;display:flex;align-items:flex-start;justify-content:flex-end;padding:5px;opacity:1;pointer-events:none}.lesson-card.completed .check-overlay i{background:#00c853;color:#fff;width:22px;height:22px;border-radius:50%;padding:4px;box-shadow:0 2px 4px #00000080}@media(max-width:900px){.curso-layout{flex-direction:column;height:auto;overflow:visible}body{height:auto;overflow-y:auto}.video-container{width:100%;height:auto;flex-grow:0;overflow:visible;padding-bottom:20px}.video-header{padding:15px 20px}.playlist-sidebar{width:100%;height:auto;border-left:none;border-top:1px solid var(--border-subtle);flex-shrink:1}.chapters-sidebar{position:fixed;top:0;left:0;height:100%;z-index:2000;background:var(--bg-panel)}.toggle-btn{top:10px;right:10px}}#custom-thumb-layer{position:absolute;top:0;left:0;width:100%;height:100%;z-index:10;background-color:#000;cursor:pointer;background-size:cover;background-position:center}#custom-thumb-layer .play-icon-overlay{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:#fff;width:80px;height:80px}#custom-thumb-layer .play-icon-overlay svg{width:100%;height:100%;filter:drop-shadow(0 4px 6px rgba(0,0,0,.5));transition:transform .2s ease}#custom-thumb-layer:hover .play-icon-overlay svg{transform:scale(1.1)}