:root{--primary:#0070f3;--bg-color:#000;--card-bg:#1a1a1a;--text-main:#fff;--text-sec:#a0a0a0;--border:#333;--input-bg:#2a2a2a}*{box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-color);margin:0;padding:0 0 60px}.card-base,body{color:var(--text-main)}.card-base{background:var(--card-bg);border-radius:10px;box-shadow:0 4px 12px rgba(0,0,0,.5)}.input-base{background:var(--input-bg);color:var(--text-main);border:1px solid var(--border)}.btn-primary{background:var(--primary);color:#fff}a{text-decoration:none;color:inherit}.container{max-width:1200px;margin:0 auto;padding:0 16px}.main-header{display:flex;justify-content:space-between;align-items:center;padding:16px 0;margin-bottom:10px}.logo{font-size:24px;font-weight:700;color:var(--primary)}.nav-links{display:flex;gap:12px}.nav-btn{padding:8px 16px;border-radius:20px;background:var(--card-bg);color:var(--text-main);border:1px solid var(--border);font-size:14px;font-weight:500}.nav-btn.primary{background:var(--primary);color:#fff;border:none}.search-section{margin-bottom:16px}.search-form{display:flex;gap:8px}.search-input{flex:1 1;padding:12px 16px;background:var(--input-bg);color:var(--text-main);border:1px solid var(--border);border-radius:24px;font-size:16px;outline:none;transition:border-color .2s}.search-input:focus{border-color:var(--primary)}.search-btn{padding:0 20px;background:var(--primary);color:#fff;border:none;border-radius:24px;font-weight:700;cursor:pointer}.tabs{display:flex;gap:12px;margin-bottom:20px;overflow-x:auto;padding-bottom:4px}.tab-btn{padding:8px 16px;background:transparent;border:none;font-size:16px;color:var(--text-sec);cursor:pointer;white-space:nowrap;position:relative}.tab-btn.active{color:var(--text-main);font-weight:700}.tab-btn.active:after{content:"";position:absolute;bottom:-4px;left:0;width:100%;height:2px;background:var(--primary)}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));grid-gap:16px;gap:16px}@media (min-width:768px){.grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px}}.card{background:var(--card-bg);border-radius:12px;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,.05);transition:transform .2s}.card:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,.1)}.card-link{display:block}.thumbnail-wrapper{position:relative;width:100%;padding-top:56.25%;background:var(--input-bg)}.thumbnail{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover}.duration-badge{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.8);color:#fff;padding:2px 6px;border-radius:4px;font-size:12px}.card-info{padding:10px}.video-title{margin:0 0 6px;font-size:14px;line-height:1.4;height:2.8em;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;color:var(--text-main)}.video-meta{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--text-sec)}.tag-badge{background:var(--input-bg);color:var(--text-sec);padding:2px 6px;border-radius:4px;max-width:80px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.empty-state,.error-msg,.loading{text-align:center;padding:40px;color:var(--text-sec)}.error-msg{color:#ff4d4f}@media (max-width:480px){.grid{grid-template-columns:1fr;gap:12px}.video-title{font-size:15px}}