:root{--primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);--success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);--dark-bg: #0f0f23;--card-bg: rgba(255, 255, 255, .05);--card-border: rgba(255, 255, 255, .1);--text-primary: #ffffff;--text-secondary: rgba(255, 255, 255, .7);--shadow-lg: 0 20px 60px rgba(0, 0, 0, .3);--shadow-xl: 0 30px 80px rgba(0, 0, 0, .4)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--dark-bg);color:var(--text-primary);min-height:100vh;overflow-x:hidden;position:relative}body:before{content:"";position:fixed;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 20% 50%,rgba(102,126,234,.15) 0%,transparent 50%),radial-gradient(circle at 80% 80%,rgba(118,75,162,.15) 0%,transparent 50%);animation:rotate 30s linear infinite;z-index:0}@keyframes rotate{0%{transform:rotate(0)}to{transform:rotate(360deg)}}#app{position:relative;z-index:1}.container{max-width:900px;margin:0 auto;padding:3rem 1.5rem}.header{text-align:center;margin-bottom:3rem;animation:fadeInDown .8s ease-out}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-30px)}to{opacity:1;transform:translateY(0)}}.title{font-size:3.5rem;font-weight:800;background:var(--primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:.75rem;letter-spacing:-.02em}.subtitle{font-size:1.25rem;color:var(--text-secondary);font-weight:400}.main-content{animation:fadeInUp .8s ease-out .2s both}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.card{background:var(--card-bg);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--card-border);border-radius:24px;padding:2.5rem;box-shadow:var(--shadow-lg);transition:all .3s ease}.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-xl);border-color:#667eea4d}.section-title{font-size:1.5rem;font-weight:700;margin-bottom:1.5rem;color:var(--text-primary)}.upload-section{margin-bottom:1.5rem}.drop-zone{border:2px dashed var(--card-border);border-radius:16px;padding:2.5rem 1.5rem;text-align:center;background:#ffffff05;transition:all .3s ease;cursor:pointer}.drop-zone:hover{border-color:#667eea;background:#667eea0d}.drop-zone.drag-over{border-color:#667eea;background:#667eea1a;transform:scale(1.02)}.upload-icon{color:var(--text-secondary);margin-bottom:1rem;transition:all .3s ease}.drop-zone:hover .upload-icon{color:#667eea;transform:translateY(-5px)}.upload-text{font-size:1rem;color:var(--text-primary);margin-bottom:.5rem}.upload-link{color:#667eea;text-decoration:underline;cursor:pointer;transition:color .3s ease}.upload-link:hover{color:#764ba2}.upload-hint{font-size:.875rem;color:var(--text-secondary)}.file-info{display:flex;align-items:center;gap:.75rem;padding:1rem 1.25rem;background:#667eea1a;border:1px solid rgba(102,126,234,.3);border-radius:12px;color:#667eea;animation:slideIn .3s ease-out}.file-info svg{flex-shrink:0}.file-info span{flex:1;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.clear-file-btn{background:none;border:none;color:#667eea;font-size:1.5rem;cursor:pointer;padding:0;width:24px;height:24px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:all .3s ease;flex-shrink:0}.clear-file-btn:hover{background:#667eea33;transform:rotate(90deg)}.divider{display:flex;align-items:center;margin:1.5rem 0;gap:1rem}.divider:before,.divider:after{content:"";flex:1;height:1px;background:var(--card-border)}.divider-text{color:var(--text-secondary);font-size:.875rem;font-weight:600;padding:0 .5rem}.text-input{width:100%;padding:1.25rem;background:#ffffff08;border:2px solid var(--card-border);border-radius:16px;color:var(--text-primary);font-size:1rem;font-family:Inter,sans-serif;resize:vertical;transition:all .3s ease;min-height:200px}.text-input:focus{outline:none;border-color:#667eea;background:#ffffff0d;box-shadow:0 0 0 4px #667eea1a}.text-input::placeholder{color:#ffffff4d}.actions{margin-top:1.5rem;display:flex;gap:1rem;justify-content:center}.btn{display:inline-flex;align-items:center;gap:.75rem;padding:1rem 2rem;border:none;border-radius:12px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;font-family:Inter,sans-serif;position:relative;overflow:hidden}.btn:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:#ffffff1a;transform:translate(-100%);transition:transform .3s ease}.btn:hover:before{transform:translate(0)}.btn-primary{background:var(--primary-gradient);color:#fff;box-shadow:0 10px 30px #667eea4d}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 15px 40px #667eea66}.btn-primary:active{transform:translateY(0)}.btn-text{position:relative;z-index:1}.btn-icon{position:relative;z-index:1;transition:transform .3s ease}.btn:hover .btn-icon{transform:translateY(2px)}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none!important}.status{margin-top:2rem;padding:1.25rem;border-radius:12px;text-align:center;font-weight:500;animation:slideIn .3s ease-out}@keyframes slideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.status.success{background:#4facfe1a;border:1px solid rgba(79,172,254,.3);color:#4facfe}.status.error{background:#f5576c1a;border:1px solid rgba(245,87,108,.3);color:#f5576c}.status.info{background:#667eea1a;border:1px solid rgba(102,126,234,.3);color:#667eea}.hidden{display:none}@keyframes spin{to{transform:rotate(360deg)}}.loading{display:inline-block;width:20px;height:20px;border:3px solid rgba(255,255,255,.3);border-radius:50%;border-top-color:#fff;animation:spin .8s linear infinite}@media (max-width: 768px){.title{font-size:2.5rem}.subtitle{font-size:1rem}.card{padding:1.5rem}.container{padding:2rem 1rem}}