@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{--bg-primary: #0a0a0f;--bg-secondary: #14141f;--bg-tertiary: #1e1e2e;--accent-primary: #6366f1;--accent-secondary: #8b5cf6;--accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);--text-primary: #f1f5f9;--text-secondary: #94a3b8;--text-muted: #64748b;--success: #10b981;--error: #ef4444;--warning: #f59e0b;--glass-bg: rgba(30, 30, 46, .7);--glass-border: rgba(255, 255, 255, .1);--spacing-xs: .5rem;--spacing-sm: .75rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--radius-sm: .5rem;--radius-md: .75rem;--radius-lg: 1rem;--radius-xl: 1.5rem;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .4), 0 2px 4px -1px rgba(0, 0, 0, .3);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .5), 0 4px 6px -2px rgba(0, 0, 0, .4);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .5), 0 10px 10px -5px rgba(0, 0, 0, .4);--shadow-glow: 0 0 20px rgba(99, 102, 241, .3);--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .35s cubic-bezier(.4, 0, .2, 1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;line-height:1.6;overflow-x:hidden;position:relative}body:before{content:"";position:fixed;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 50% 50%,rgba(99,102,241,.15) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(139,92,246,.15) 0%,transparent 50%);animation:gradient-shift 15s ease infinite;z-index:-1}@keyframes gradient-shift{0%,to{transform:translate(0) rotate(0)}50%{transform:translate(-5%,-5%) rotate(5deg)}}#app{max-width:900px;margin:0 auto;padding:var(--spacing-2xl) var(--spacing-lg);min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center}.header{text-align:center;margin-bottom:var(--spacing-2xl);animation:fade-in-down .6s ease-out}.logo{display:inline-flex;align-items:center;justify-content:center;width:80px;height:80px;background:var(--accent-gradient);border-radius:var(--radius-xl);margin-bottom:var(--spacing-lg);box-shadow:var(--shadow-glow);animation:pulse-glow 3s ease-in-out infinite}.logo svg{width:48px;height:48px;fill:#fff}@keyframes pulse-glow{0%,to{box-shadow:0 0 20px #6366f14d}50%{box-shadow:0 0 30px #6366f180}}h1{font-size:2.5rem;font-weight:700;background:linear-gradient(135deg,var(--text-primary) 0%,var(--text-secondary) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:var(--spacing-sm);letter-spacing:-.02em}.subtitle{font-size:1.125rem;color:var(--text-secondary);font-weight:400}.card{background:var(--glass-bg);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--glass-border);border-radius:var(--radius-xl);padding:var(--spacing-2xl);width:100%;box-shadow:var(--shadow-xl);animation:fade-in-up .6s ease-out .2s both}.form-group{margin-bottom:var(--spacing-lg)}label{display:block;font-size:.875rem;font-weight:600;color:var(--text-secondary);margin-bottom:var(--spacing-sm);text-transform:uppercase;letter-spacing:.05em}.input-wrapper{position:relative}input[type=text],input[type=url]{width:100%;padding:var(--spacing-md) var(--spacing-lg);background:var(--bg-secondary);border:2px solid transparent;border-radius:var(--radius-md);color:var(--text-primary);font-size:1rem;font-family:inherit;transition:all var(--transition-base);outline:none}input[type=text]:focus,input[type=url]:focus{border-color:var(--accent-primary);box-shadow:0 0 0 4px #6366f11a}input[type=text]::placeholder,input[type=url]::placeholder{color:var(--text-muted)}.btn{position:relative;width:100%;padding:var(--spacing-md) var(--spacing-xl);background:var(--accent-gradient);border:none;border-radius:var(--radius-md);color:#fff;font-size:1rem;font-weight:600;font-family:inherit;cursor:pointer;transition:all var(--transition-base);overflow:hidden;box-shadow:var(--shadow-md)}.btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left var(--transition-slow)}.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg),var(--shadow-glow)}.btn:hover:before{left:100%}.btn:active{transform:translateY(0)}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn:disabled:hover{transform:none;box-shadow:var(--shadow-md)}.loading{display:none;text-align:center;padding:var(--spacing-xl)}.loading.active{display:block;animation:fade-in .3s ease}.spinner{width:48px;height:48px;margin:0 auto var(--spacing-md);border:4px solid var(--bg-tertiary);border-top-color:var(--accent-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{color:var(--text-secondary);font-size:.875rem}.progress-container{margin-top:var(--spacing-lg);display:none}.progress-container.active{display:block;animation:fade-in .3s ease}.progress-bar{height:8px;background:var(--bg-tertiary);border-radius:var(--radius-sm);overflow:hidden;margin-bottom:var(--spacing-sm)}.progress-fill{height:100%;background:var(--accent-gradient);border-radius:var(--radius-sm);transition:width var(--transition-base);box-shadow:0 0 10px #6366f180}.progress-text{color:var(--text-secondary);font-size:.875rem;text-align:center}.status{margin-top:var(--spacing-lg);padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--radius-md);font-size:.875rem;display:none;animation:fade-in-up .3s ease}.status.active{display:block}.status.success{background:#10b9811a;border:1px solid rgba(16,185,129,.3);color:var(--success)}.status.error{background:#ef44441a;border:1px solid rgba(239,68,68,.3);color:var(--error)}.status.info{background:#6366f11a;border:1px solid rgba(99,102,241,.3);color:var(--accent-primary)}.track-list{margin-top:var(--spacing-lg);display:none}.track-list.active{display:block;animation:fade-in-up .3s ease}.track-list h3{font-size:1rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-md)}.track-item{padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-secondary);border:1px solid var(--glass-border);border-radius:var(--radius-sm);margin-bottom:var(--spacing-sm);display:flex;align-items:center;gap:var(--spacing-sm);transition:all var(--transition-fast)}.track-item:hover{background:var(--bg-tertiary);border-color:var(--accent-primary)}.track-icon{font-size:3.5rem;min-width:32px;padding-right:16px;padding-left:18px;text-align:center;display:flex;align-items:center;justify-content:center}.track-name{color:var(--text-primary);font-size:.875rem;font-weight:500}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes fade-in-up{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fade-in-down{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@media(max-width:640px){#app{padding:var(--spacing-lg) var(--spacing-md)}h1{font-size:2rem}.subtitle{font-size:1rem}.card{padding:var(--spacing-lg)}}.footer{margin-top:var(--spacing-2xl);text-align:center;color:var(--text-muted);font-size:.875rem;padding:var(--spacing-lg);animation:fade-in .6s ease-out .4s both}.footer a{color:var(--accent-primary);text-decoration:none;transition:color var(--transition-fast)}.footer a:hover{color:var(--accent-secondary)}