:root{--glass-bg: rgba(255, 255, 255, .12);--glass-border: rgba(255, 255, 255, .15);--primary: #6366f1;--primary-hover: #4f46e5;--text-main: #ffffff;--text-muted: rgba(255, 255, 255, .6)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}body{margin:0;padding:0;font-family:Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:linear-gradient(135deg,#111827,#1e1b4b,#312e81);color:var(--text-main);height:100vh;width:100vw;overflow:hidden;display:flex;justify-content:center;align-items:center}#root{width:100%;height:100%;display:flex;justify-content:center;align-items:center}.app-container{width:100%;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:16px;position:relative}.bg-orb{position:absolute;border-radius:50%;filter:blur(80px);z-index:-1}.orb-1{top:5%;left:5%;width:300px;height:300px;background:#6366f140}.orb-2{bottom:5%;right:5%;width:250px;height:250px;background:#db277733}.glass-card{background:var(--glass-bg);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border:1px solid var(--glass-border);border-radius:20px;padding:24px;width:100%;max-width:440px;display:flex;flex-direction:column;gap:16px;box-shadow:0 25px 50px -12px #0009;transition:all .3s ease}.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:4px}.logo{font-size:1.4rem;font-weight:700;background:linear-gradient(to right,#a5b4fc,#e0e7ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;display:flex;align-items:center;gap:8px}.lang-switcher{display:flex;gap:4px;background:#0003;padding:3px;border-radius:8px}.lang-btn{background:transparent;border:none;color:var(--text-muted);font-size:.75rem;font-weight:600;cursor:pointer;padding:4px 8px;border-radius:6px;transition:all .2s}.lang-btn.active{background:var(--primary);color:#fff}.input-wrapper{position:relative;width:100%}.url-input{width:100%;padding:14px 44px 14px 16px;border-radius:12px;border:1px solid rgba(255,255,255,.1);background:#00000040;color:#fff;font-size:.95rem;outline:none;transition:border-color .3s}.url-input:focus{border-color:var(--primary);background:#00000059}.paste-btn{position:absolute;right:10px;top:50%;transform:translateY(-50%);background:none;border:none;color:var(--text-muted);cursor:pointer;padding:6px;border-radius:6px;display:flex}.paste-btn:hover{background:#ffffff1a;color:#fff}.config-group{display:flex;flex-direction:column;gap:8px}.path-row{display:flex;align-items:center;gap:10px;background:#ffffff0d;padding:6px 10px;border-radius:12px;border:1px solid rgba(255,255,255,.05);transition:border-color .2s}.path-row:focus-within{border-color:#fff3;background:#ffffff14}.path-label{font-size:.85rem;color:var(--text-muted);white-space:nowrap;min-width:60px;display:flex;align-items:center;gap:6px}.icon-inline{opacity:.7}.path-input-container{flex:1;display:flex;align-items:center;gap:6px;overflow:hidden}.path-input{flex:1;background:transparent;border:none;color:var(--text-main);font-size:.85rem;outline:none;width:100%;font-family:monospace}.folder-btn,.dl-link-btn{background:#ffffff1a;border:none;color:var(--text-main);padding:6px;border-radius:6px;cursor:pointer;display:flex;flex-shrink:0;text-decoration:none;align-items:center;justify-content:center}.folder-btn:hover,.dl-link-btn:hover{background:#fff3}.options-row{display:flex;justify-content:space-between;align-items:center;padding:0 4px}.checkbox-label{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:.9rem;-webkit-user-select:none;user-select:none;color:var(--text-muted)}.custom-checkbox{width:18px;height:18px;border:1.5px solid var(--glass-border);border-radius:5px;display:flex;align-items:center;justify-content:center;transition:all .2s;background:#0000001a}.checkbox-input:checked+.custom-checkbox{background:var(--primary);border-color:var(--primary)}.checkbox-input{display:none}.platforms{display:flex;gap:10px}.platform-icon{opacity:.2;transition:opacity .3s}.platform-icon.active{opacity:1;filter:drop-shadow(0 0 6px rgba(255,255,255,.4))}.download-btn{width:100%;padding:16px;border-radius:14px;border:none;background:linear-gradient(to right,#4f46e5,#7c3aed);color:#fff;font-size:1rem;font-weight:600;cursor:pointer;box-shadow:0 8px 20px -5px #4f46e566;transition:transform .1s;display:flex;justify-content:center;align-items:center;gap:8px}.download-btn:active{transform:scale(.98)}.download-btn:disabled{opacity:.6;cursor:not-allowed}.result-area{background:#0003;border-radius:16px;padding:16px;display:flex;flex-direction:column;gap:14px;animation:slideUp .4s cubic-bezier(.16,1,.3,1)}.terminal-view{background:#0006;border-radius:12px;padding:12px;font-family:Consolas,Monaco,monospace;font-size:.75rem;color:#a5b4fc;height:80px;overflow-y:auto;border:1px solid rgba(255,255,255,.1)}.terminal-view pre{margin:0;white-space:pre-wrap}.video-preview{display:flex;gap:12px;align-items:center}.thumbnail{width:90px;height:56px;object-fit:cover;border-radius:8px;background:#000}.video-info{flex:1;overflow:hidden}.video-title{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:600;font-size:.95rem;margin-bottom:4px}.video-meta{font-size:.75rem;color:var(--text-muted)}.resolution-section{display:flex;flex-direction:column;gap:8px}.res-label{font-size:.75rem;color:var(--text-muted)}.res-list{display:flex;gap:8px;flex-wrap:wrap}.res-chip{padding:6px 12px;border-radius:20px;font-size:.8rem;background:transparent;border:1px solid var(--glass-border);color:var(--text-muted);cursor:pointer;transition:all .2s}.res-chip:hover{background:#ffffff1a}.res-chip.active{background:var(--primary);border-color:var(--primary);color:#fff}.action-buttons{display:flex;gap:10px;margin-top:4px}.primary-action-btn{flex:2;padding:12px;border-radius:12px;border:none;background:var(--primary);color:#fff;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;font-size:.95rem}.secondary-action-btn{flex:1.5;padding:12px;border-radius:12px;border:1px solid var(--glass-border);background:#ffffff1a;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;font-size:.95rem}.reset-btn{background:none;border:none;color:var(--text-muted);font-size:.8rem;cursor:pointer;padding:4px;align-self:center}.reset-btn:hover{color:#fff;text-decoration:underline}.footer-info{text-align:center;font-size:.75rem;color:#ffffff4d;margin-top:auto}@keyframes slideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes spin{to{transform:rotate(360deg)}}.spinner{width:18px;height:18px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}@media(max-height:700px){.app-container{padding:10px}.glass-card{padding:20px;gap:12px}.header{margin-bottom:0}.logo{font-size:1.2rem}.download-btn{padding:14px}.result-area{padding:12px;gap:10px}}