*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #2563eb;--primary-hover: #1d4ed8;--success-color: #059669;--danger-color: #dc2626;--warning-color: #d97706;--bg-color: #f8fafc;--card-bg: #ffffff;--text-color: #1e293b;--text-muted: #64748b;--border-color: #e2e8f0;--border-dashed: #cbd5e1;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--radius: 8px;--radius-lg: 12px}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background-color:var(--bg-color);color:var(--text-color);line-height:1.6}.header{text-align:center;padding:2rem 1rem;background:linear-gradient(135deg,var(--primary-color),var(--primary-hover));color:#fff;margin-bottom:2rem}.header h1{font-size:clamp(1.8rem,4vw,2.5rem);margin-bottom:.5rem;font-weight:700}.subtitle{font-size:1.1rem;opacity:.9;margin-bottom:0}.main{max-width:1200px;margin:0 auto;padding:0 1rem}.upload-area{border:3px dashed var(--border-dashed);border-radius:var(--radius-lg);padding:3rem 2rem;text-align:center;background-color:var(--card-bg);transition:all .3s ease;cursor:pointer;margin-bottom:2rem}.upload-area:hover{border-color:var(--primary-color);background-color:#f1f5f9}.upload-area.dragover{border-color:var(--primary-color);background-color:#eff6ff;transform:scale(1.02)}.upload-content{pointer-events:none}.upload-icon{font-size:4rem;margin-bottom:1rem}.upload-area h3{margin-bottom:1rem;color:var(--text-color);font-size:1.5rem}.upload-area p{color:var(--text-muted);margin-bottom:1rem;font-size:1.1rem}.select-button{background-color:var(--primary-color);color:#fff;border:none;padding:1rem 2rem;border-radius:var(--radius);font-size:1.1rem;font-weight:600;cursor:pointer;transition:all .3s 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ease;font-size:1rem}.download-all-btn{background-color:var(--success-color);color:#fff}.download-all-btn:hover{background-color:#047857;transform:translateY(-1px);box-shadow:var(--shadow-md)}.clear-all-btn{background-color:var(--danger-color);color:#fff}.clear-all-btn:hover{background-color:#b91c1c;transform:translateY(-1px);box-shadow:var(--shadow-md)}.queue{display:grid;grid-template-columns:repeat(auto-fill,minmax(400px,1fr));gap:1.5rem;margin-bottom:3rem}.image-card{background-color:var(--card-bg);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-sm);border:1px solid var(--border-color);transition:all .3s ease}.image-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.image-header{display:flex;align-items:center;gap:1rem;margin-bottom:1rem}.image-thumbnail{width:60px;height:60px;object-fit:cover;border-radius:var(--radius);border:2px solid var(--border-color)}.image-info{flex:1;min-width:0}.image-name{font-weight:600;margin-bottom:.25rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.image-size{color:var(--text-muted);font-size:.9rem}.conversion-info{background-color:#f1f5f9;padding:1rem;border-radius:var(--radius);margin-bottom:1rem}.size-comparison{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem;flex-wrap:wrap;gap:.5rem}.original-size{color:var(--text-muted)}.webp-size{color:var(--success-color);font-weight:600}.savings{background-color:var(--success-color);color:#fff;padding:.25rem .5rem;border-radius:4px;font-size:.8rem;font-weight:600}.quality-control{margin-bottom:1rem}.quality-label{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem;font-weight:600}.quality-slider{width:100%;height:6px;border-radius:3px;background:var(--border-color);outline:none;appearance:none}.quality-slider::-webkit-slider-thumb{appearance:none;width:20px;height:20px;border-radius:50%;background:var(--primary-color);cursor:pointer;border:2px solid white;box-shadow:var(--shadow-sm)}.quality-slider::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--primary-color);cursor:pointer;border:2px solid white;box-shadow:var(--shadow-sm)}.download-button{width:100%;background-color:var(--primary-color);color:#fff;border:none;padding:.75rem;border-radius:var(--radius);font-weight:600;cursor:pointer;transition:all .3s ease;font-size:1rem}.download-button:hover{background-color:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}.download-button:disabled{background-color:var(--text-muted);cursor:not-allowed;transform:none;box-shadow:none}.status{text-align:center;margin-bottom:1rem;font-weight:600}.status.processing{color:var(--warning-color)}.status.ready{color:var(--success-color)}.status.error{color:var(--danger-color)}.footer{text-align:center;padding:2rem 1rem;background-color:var(--card-bg);border-top:1px solid var(--border-color);margin-top:3rem}.footer p{color:var(--success-color);font-weight:600}.loading{display:inline-block;width:20px;height:20px;border:3px solid var(--border-color);border-radius:50%;border-top-color:var(--primary-color);animation:spin 1s ease-in-out infinite;margin-right:.5rem}@keyframes spin{to{transform:rotate(360deg)}}.login-screen{position:fixed;top:0;left:0;width:100%;height:100%;background:linear-gradient(135deg,var(--primary-color),var(--primary-hover));display:flex;align-items:center;justify-content:center;z-index:1000}.login-container{background:var(--card-bg);border-radius:var(--radius-lg);padding:3rem;box-shadow:var(--shadow-lg);width:100%;max-width:450px;margin:1rem}.login-header{text-align:center;margin-bottom:2rem}.login-header h1{color:var(--primary-color);margin-bottom:.5rem;font-size:2rem}.login-header p{color:var(--text-muted);font-size:1.1rem}.login-form{margin-bottom:2rem}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:600;color:var(--text-color)}.form-group input{width:100%;padding:.75rem;border:2px solid var(--border-color);border-radius:var(--radius);font-size:1rem;transition:border-color .3s ease}.form-group input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #2563eb1a}.login-button{width:100%;background-color:var(--primary-color);color:#fff;border:none;padding:1rem;border-radius:var(--radius);font-size:1.1rem;font-weight:600;cursor:pointer;transition:all .3s ease}.login-button:hover{background-color:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}.login-button:disabled{background-color:var(--text-muted);cursor:not-allowed;transform:none}.login-error{background-color:#fef2f2;border:1px solid #fecaca;color:var(--danger-color);padding:.75rem;border-radius:var(--radius);margin-top:1rem;text-align:center;font-weight:600}.header-content{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:0 1rem}.header-title{text-align:left}.user-info{display:flex;align-items:center;gap:1rem}.current-user{color:#fff;font-weight:600;opacity:.9}.logout-btn{background-color:#fff3;color:#fff;border:1px solid rgba(255,255,255,.3);padding:.5rem 1rem;border-radius:var(--radius);font-weight:600;cursor:pointer;transition:all .3s ease;font-size:.9rem}.logout-btn:hover{background-color:#ffffff4d;border-color:#ffffff80}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#00000080;display:flex;align-items:center;justify-content:center;z-index:2000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal-container{background:var(--card-bg);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);width:100%;max-width:450px;margin:1rem;overflow:hidden;animation:modalSlideIn .3s ease-out}@keyframes modalSlideIn{0%{opacity:0;transform:translateY(-20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.modal-header{background:linear-gradient(135deg,var(--danger-color),#dc2626);color:#fff;padding:1.5rem;text-align:center}.modal-header h3{margin:0;font-size:1.3rem;font-weight:600}.modal-body{padding:2rem;text-align:center}.modal-body p{margin:0 0 1rem;color:var(--text-color);font-size:1.1rem;font-weight:600}.modal-subtitle{font-size:.95rem!important;color:var(--text-muted)!important;font-weight:400!important;margin-bottom:0!important}.modal-actions{display:flex;gap:1rem;padding:0 2rem 2rem}.modal-btn{flex:1;padding:.75rem 1rem;border:none;border-radius:var(--radius);font-weight:600;cursor:pointer;transition:all .3s ease;font-size:1rem}.modal-btn-secondary{background-color:var(--border-color);color:var(--text-color)}.modal-btn-secondary:hover{background-color:#cbd5e1;transform:translateY(-1px)}.modal-btn-danger{background-color:var(--danger-color);color:#fff}.modal-btn-danger:hover{background-color:#b91c1c;transform:translateY(-1px);box-shadow:var(--shadow-md)}@media (max-width: 768px){.queue{grid-template-columns:1fr}.upload-area{padding:2rem 1rem}.controls{flex-direction:column}.download-all-btn,.clear-all-btn{width:100%}.size-comparison{flex-direction:column;align-items:flex-start}.login-container{padding:2rem 1.5rem;margin:.5rem}.login-header h1{font-size:1.8rem}.header-content{flex-direction:column;gap:1rem;text-align:center}.header-title{text-align:center}.user-info{flex-direction:column;gap:.5rem}.modal-container{margin:.5rem}.modal-header{padding:1rem}.modal-header h3{font-size:1.1rem}.modal-body{padding:1.5rem}.modal-actions{flex-direction:column;padding:0 1.5rem 1.5rem}}