.bg-remover-page{min-height:100vh;background:var(--primary-bg);color:var(--text-primary)}.bg-remover-header{background:#0a0a0af2;backdrop-filter:blur(10px);border-bottom:1px solid var(--border-color);padding:1rem 0;position:sticky;top:0;z-index:100}.bg-remover-header .container{display:flex;justify-content:space-between;align-items:center}.header-auth,.header-info{display:flex;gap:1rem;align-items:center}.header-auth .auth-link{background:none;border:1px solid var(--border-color);color:var(--text-secondary);padding:.5rem 1rem;border-radius:6px;cursor:pointer;text-decoration:none;font-size:.875rem;font-family:inherit;transition:all .2s ease}.header-auth .auth-link:hover{background:var(--accent-bg);color:var(--text-primary);border-color:var(--accent-color)}.webgpu-badge{background:linear-gradient(135deg,#8b5cf6,#7c3aed);color:#fff;padding:.5rem 1rem;border-radius:20px;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px}.bg-remover-container{padding:2rem 0 4rem}.bg-remover-content{max-width:1000px;margin:0 auto;text-align:center}.bg-remover-title{font-size:clamp(2rem,4vw,3rem);font-weight:800;margin-bottom:1rem;background:linear-gradient(135deg,#fff,#b0b0b0);-webkit-background-clip:text;-webkit-text-fill-color:#0000;background-clip:text}.bg-remover-subtitle{font-size:1.1rem;color:var(--text-secondary);margin-bottom:3rem;max-width:600px;margin-left:auto;margin-right:auto}.advanced-settings{margin:2rem auto;max-width:500px}.advanced-settings-toggle{width:100%;background:var(--secondary-bg);border:1px solid var(--border-color);border-radius:8px;padding:1rem 1.5rem;color:var(--text-primary);font-family:inherit;font-size:1rem;cursor:pointer;display:flex;align-items:center;justify-content:space-between;transition:all .3s ease}.advanced-settings-toggle:hover:not(:disabled){background:var(--accent-bg);border-color:var(--accent-color)}.advanced-settings-toggle:disabled{opacity:.6;cursor:not-allowed}.settings-icon{margin-right:.5rem}.chevron{transition:transform .3s ease;font-size:.875rem;color:var(--text-secondary)}.chevron.expanded{transform:rotate(180deg)}.advanced-settings-content{max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease;background:var(--secondary-bg);border:1px solid var(--border-color);border-top:none;border-radius:0 0 8px 8px}.advanced-settings-content.expanded{max-height:200px;padding:1.5rem}.model-selector{text-align:left}.model-selector label{display:block;font-weight:600}.model-selector label,.model-selector select{margin-bottom:.5rem;color:var(--text-primary)}.model-selector select{width:100%;padding:.75rem;background:var(--accent-bg);border:1px solid var(--border-color);border-radius:6px;font-family:inherit}.model-selector select:disabled{opacity:.6;cursor:not-allowed}.model-description{font-size:.875rem;color:var(--text-secondary);font-style:italic}.loading-section{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:4rem 2rem;margin:2rem 0}.upload-section{margin:2rem 0}.file-drop-zone-large{border:3px dashed var(--border-color);border-radius:20px;padding:4rem 2rem;background:var(--secondary-bg);transition:all .3s ease;cursor:pointer;position:relative;max-width:600px;margin:0 auto}.file-drop-zone-large.drag-over,.file-drop-zone-large:hover{border-color:var(--accent-color);background:#3b82f61a;transform:translateY(-4px);box-shadow:0 20px 40px #3b82f633}.upload-icon{font-size:4rem;margin-bottom:1.5rem;opacity:.8}.upload-text{font-size:1.3rem;font-weight:600;margin-bottom:.5rem}.upload-subtext{color:var(--text-secondary);margin-bottom:2rem}.upload-features{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem;margin-top:2rem}.upload-feature{font-size:.9rem;color:var(--text-secondary);padding:.5rem}.results-section{margin:2rem 0}.image-comparison{display:grid;grid-template-columns:1fr auto 1fr;gap:2rem;align-items:center;max-width:900px;margin:2rem auto}.image-container{text-align:center}.image-label{background:var(--accent-color);color:#fff;padding:.5rem 1rem;border-radius:20px;font-size:.875rem;font-weight:700;display:inline-block;margin-bottom:1rem}.image-wrapper{border-radius:16px;overflow:hidden;box-shadow:0 10px 30px #0000004d;background:var(--secondary-bg);position:relative}.comparison-image{width:100%;height:auto;display:block;max-width:400px;max-height:400px;object-fit:contain}.comparison-arrow{font-size:2.5rem;color:var(--accent-color);animation:pulse 2s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.processing-placeholder{width:400px;height:400px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--accent-bg);border:2px dashed var(--border-color)}.processing-spinner{width:60px;height:60px;border-top:4px solid var(--border-color);border:4px solid var(--border-color);border-top-color:var(--accent-color);border-radius:50%;animation:spin 1s linear infinite;margin-bottom:1rem}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}.processing-text{text-align:center;color:var(--text-secondary)}.progress-bar{width:200px;height:8px;background:var(--border-color);border-radius:4px;margin:1rem 0;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,var(--accent-color),var(--success-color));border-radius:4px;transition:width .3s ease}.progress-text{font-size:.875rem;font-weight:600}.result-placeholder{width:400px;height:400px;display:flex;align-items:center;justify-content:center;background:var(--accent-bg);color:var(--text-secondary);border:2px dashed var(--border-color)}.action-buttons{display:flex;gap:1rem;justify-content:center;margin:1rem 0;flex-wrap:wrap}.download-button{background:var(--success-color)}.download-button:hover{background:#059669}.secondary-button{background:var(--accent-bg);color:var(--text-primary);padding:1rem 2rem;border-radius:8px;border:1px solid var(--border-color);font-weight:600;cursor:pointer;transition:all .3s ease;text-decoration:none;display:inline-block}.secondary-button:hover{background:var(--border-color);transform:translateY(-2px)}.error-message-large{background:#ef44441a;border:2px solid var(--error-color);color:var(--error-color);padding:1.5rem;border-radius:12px;margin:2rem 0;text-align:center}.retry-button{background:var(--error-color);color:#fff;border:none;padding:.5rem 1rem;border-radius:6px;margin-left:1rem;cursor:pointer;font-weight:600}.retry-button:hover{background:#dc2626}.tool-features{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin:3rem 0;padding:2rem;background:var(--secondary-bg);border-radius:16px;border:1px solid var(--border-color)}.tool-feature{display:flex;align-items:center;gap:1rem;text-align:left}.tool-feature-icon{font-size:2rem;flex-shrink:0}.tool-feature-text{display:flex;flex-direction:column}.tool-feature-text strong{color:var(--text-primary);margin-bottom:.25rem}.tool-feature-text span{color:var(--text-secondary);font-size:.875rem}.download-section{margin:2rem 0;padding:2rem;background:var(--secondary-bg);border-radius:16px;border:1px solid var(--border-color)}.download-info{text-align:center;margin-bottom:1.5rem}.size-info{display:flex;flex-direction:column;gap:.25rem}.size-label{font-weight:600;color:var(--text-primary)}.size-details{font-size:.875rem;color:var(--text-secondary)}.download-buttons{display:flex;gap:1rem;justify-content:center;margin:1.5rem 0;flex-wrap:wrap}.free-download{background:var(--success-color);border:2px solid var(--success-color)}.free-download:hover{background:#059669;border-color:#059669}.premium-download{background:linear-gradient(135deg,#fbbf24,#f59e0b);border:2px solid #f59e0b;color:#1f2937;font-weight:700;position:relative;overflow:hidden}.premium-download:hover{background:linear-gradient(135deg,#f59e0b,#d97706);border-color:#d97706;transform:translateY(-2px);box-shadow:0 8px 25px #f59e0b66}.premium-download:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,#0000,#ffffff4d,#0000);transition:left .5s}.premium-download:hover:before{left:100%}.crown-icon{margin-right:.5rem;font-size:1.2em;filter:drop-shadow(0 2px 4px rgba(0,0,0,.2))}.premium-info{text-align:center;margin-top:1rem}.premium-details{font-size:.875rem;color:var(--text-secondary);font-style:italic}@media (max-width:768px){.bg-remover-container{padding:1rem 0 2rem}.file-drop-zone-large{padding:2rem 1rem;margin:0 1rem}.upload-features{grid-template-columns:1fr;gap:.5rem}.image-comparison{grid-template-columns:1fr;gap:1rem}.comparison-arrow{transform:rotate(90deg);font-size:2rem}.processing-placeholder,.result-placeholder{width:100%;height:300px;max-width:350px;margin:0 auto}.comparison-image{max-width:100%;max-height:300px}.action-buttons{flex-direction:column;align-items:center}.tool-features{grid-template-columns:1fr;padding:1rem}.tool-feature{text-align:center;flex-direction:column;gap:.5rem}.advanced-settings{margin:1rem}.header-info{flex-direction:column;gap:.5rem}.header-auth{margin-top:.5rem}.advanced-settings-content.expanded{max-height:250px}.download-buttons{flex-direction:column;align-items:center}.download-section{margin:1rem;padding:1.5rem}.size-info{text-align:center}.free-download,.premium-download{width:100%;max-width:300px}}.transparency-bg{background-image:linear-gradient(45deg,#ccc 25%,#0000 0),linear-gradient(-45deg,#ccc 25%,#0000 0),linear-gradient(45deg,#0000 75%,#ccc 0),linear-gradient(-45deg,#0000 75%,#ccc 0);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0}.fade-in{animation:fadeIn .5s ease-in}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.slide-in{animation:slideIn .3s ease-out}@keyframes slideIn{0%{transform:translateX(-20px);opacity:0}to{transform:translateX(0);opacity:1}}@keyframes shimmer{0%{background-position:-200px 0}to{background-position:calc(200px + 100%) 0}}.premium-download{background-image:linear-gradient(135deg,#fbbf24,#f59e0b);background-size:200px 100%;animation:shimmer 3s ease-in-out infinite}