:root{--primary-color: #ff3366;--bg-color: #0f0f13;--surface-color: #1a1a24;--text-primary: #ffffff;--text-secondary: #a0a0b0;--glass-bg: rgba(26, 26, 36, .7);--glass-border: rgba(255, 255, 255, .1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-color);color:var(--text-primary);min-height:100vh;margin:0;overflow:hidden}.app-container{width:100vw;height:100vh;display:flex;overflow:hidden}.main-content{flex:1;display:flex;flex-direction:column;padding:2rem;gap:2rem;overflow-y:auto;align-items:center}header{text-align:center;animation:fadeInDown .8s ease-out}header h1{font-size:3rem;font-weight:800;background:linear-gradient(135deg,#f36,#f93);-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:.5rem}header p{color:var(--text-secondary);font-size:1.2rem;letter-spacing:.05em}.player-card{background:var(--glass-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--glass-border);border-radius:24px;padding:2rem;display:flex;flex-direction:column;gap:1.5rem;box-shadow:0 8px 32px #0000004d;transition:transform .3s ease,box-shadow .3s ease;animation:fadeInUp .8s ease-out;margin:auto;max-width:500px;width:100%}.player-card:hover{transform:translateY(-5px);box-shadow:0 12px 40px #0006}.track-info{display:flex;flex-direction:column;align-items:center;text-align:center;gap:.5rem}.track-title{font-size:1.5rem;font-weight:600}.track-artist{color:var(--text-secondary);font-size:1rem}.controls{display:flex;justify-content:center;align-items:center;gap:1.5rem}.btn{background:none;border:none;color:var(--text-primary);cursor:pointer;transition:all .2s ease;display:flex;justify-content:center;align-items:center;border-radius:50%;width:48px;height:48px;background:#ffffff0d}.btn:hover{background:#ffffff1a;transform:scale(1.05)}.btn.play-btn{width:64px;height:64px;background:var(--primary-color);box-shadow:0 4px 15px #f366}.btn.play-btn:hover{transform:scale(1.1);box-shadow:0 6px 20px #f369}.btn.secondary-btn{width:40px;height:40px;background:#ffffff08;color:var(--text-secondary)}.btn.secondary-btn.active{color:var(--primary-color);background:#ff33661a;box-shadow:inset 0 0 10px #f363}.progress-container{display:flex;align-items:center;gap:1rem;font-size:.85rem;color:var(--text-secondary)}.progress-bar{flex:1;height:6px;background:#ffffff1a;border-radius:3px;cursor:pointer;position:relative;overflow:hidden}.progress{height:100%;background:var(--primary-color);border-radius:3px;width:0%;transition:width .1s linear}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.sidebar{width:300px;background:var(--glass-bg);backdrop-filter:blur(30px);-webkit-backdrop-filter:blur(30px);border-right:1px solid var(--glass-border);display:flex;flex-direction:column;transition:width .4s cubic-bezier(.4,0,.2,1);height:100%;z-index:100}.sidebar.collapsed{width:80px}.sidebar-header{padding:1.5rem;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--glass-border);height:80px}.sidebar-title{font-size:1.2rem;font-weight:700;color:var(--text-primary);white-space:nowrap;overflow:hidden}.collapse-btn{background:#ffffff0d;border:none;color:var(--text-primary);width:36px;height:36px;border-radius:10px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease;flex-shrink:0}.collapse-btn:hover{background:#ffffff1a}.song-list{flex:1;overflow-y:auto;padding:1rem;display:flex;flex-direction:column;gap:.5rem}.song-item{padding:.75rem 1rem;border-radius:12px;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;gap:1rem;border:1px solid transparent}.song-item:hover{background:#ffffff0d}.sidebar.collapsed .song-item{justify-content:center;padding:.75rem 0}.song-initial{width:40px;height:40px;background:linear-gradient(135deg,var(--primary-color),#ff9933);border-radius:10px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.2rem;flex-shrink:0}.song-info{display:flex;flex-direction:column;overflow:hidden;white-space:nowrap}.song-title{font-weight:600;font-size:.95rem;text-overflow:ellipsis;overflow:hidden}.song-artist{font-size:.8rem;color:var(--text-secondary);text-overflow:ellipsis;overflow:hidden}.focusable:focus{outline:3px solid var(--primary-color);outline-offset:2px;box-shadow:0 0 15px var(--primary-color);background:#ff33661a}