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ease}.enlarge-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;box-shadow:0 4px 12px #667eea4d}.enlarge-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 16px #667eea66}.enlarge-button:disabled{opacity:.5;cursor:not-allowed}.reset-button{background:var(--bg-primary);color:var(--text-primary)}.reset-button:hover:not(:disabled){border-color:var(--accent-color);background:var(--bg-tertiary)}.button-loading{display:flex;align-items:center;gap:.5rem;justify-content:center}.download-section{margin-top:1rem}.download-button{width:100%;display:flex;align-items:center;justify-content:center;gap:.5rem}.preview-section{margin-top:1.5rem}@media(max-width:768px){.scale-presets{grid-template-columns:repeat(2,1fr)}.quality-format-controls,.enlarge-actions{flex-direction:column}}.image-editor{display:flex;flex-direction:column;gap:2rem;max-width:1400px;margin:0 auto;padding:0 1rem}.image-editor-header{display:flex;flex-direction:column;gap:1.5rem}.image-editor-header h2{font-size:clamp(1.75rem,3vw,2.25rem);font-weight:700;margin:0;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.editor-toolbar{display:flex;gap:.75rem;flex-wrap:wrap;padding:1.25rem;background:var(--bg-secondary);border-radius:1rem;border:1px solid var(--border-color);box-shadow:var(--shadow-sm);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.tool-button{padding:.875rem 1.5rem;border:2px solid var(--border-color);background:var(--bg-primary);color:var(--text-primary);font-weight:600;font-size:.95rem;border-radius:.75rem;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);white-space:nowrap;position:relative;overflow:hidden}.tool-button:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.1),transparent);transition:left .5s ease}.tool-button:hover:before{left:100%}.tool-button:hover:not(:disabled){border-color:var(--accent-color);background:var(--bg-secondary);color:var(--text-primary);transform:translateY(-2px);box-shadow:0 6px 20px #667eea26}[data-theme=dark] .tool-button:hover:not(:disabled){background:var(--bg-tertiary);border-color:var(--accent-color);color:var(--text-primary);box-shadow:0 6px 20px #764ba24d}.tool-button:disabled{opacity:.5;cursor:not-allowed;background:var(--bg-tertiary)}.tool-button.active{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff!important;border-color:transparent;box-shadow:0 4px 16px #667eea66;font-weight:600}.tool-button.active:hover{background:linear-gradient(135deg,#5568d3,#8a5fb8);color:#fff!important;box-shadow:0 6px 24px #667eea80;transform:translateY(-3px)}.editor-main{display:grid;grid-template-columns:1fr 400px;gap:2rem}.editor-preview{background:var(--bg-secondary);border-radius:1rem;border:1px solid var(--border-color);padding:1.5rem;min-height:400px;box-shadow:var(--shadow-sm);transition:all .3s ease}.editor-preview:hover{box-shadow:var(--shadow-md)}.editor-controls{display:flex;flex-direction:column;gap:1.5rem;background:var(--bg-secondary);border-radius:1rem;border:1px solid var(--border-color);padding:1.5rem;max-height:calc(100vh - 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button.active{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff!important;box-shadow:0 4px 12px #667eea4d;font-weight:600}.mode-selector button.active:hover{background:linear-gradient(135deg,#5568d3,#8a5fb8);color:#fff!important;box-shadow:0 6px 16px #667eea66}.editor-content{max-width:1400px;margin:0 auto}@media(max-width:768px){.editor-page{padding:1rem}.editor-header{flex-direction:column;align-items:stretch}.header-actions{flex-direction:column;width:100%}.mode-selector{flex-wrap:wrap;width:100%}.mode-selector button{flex:1;min-width:120px}}.history-panel{width:100%;max-width:1200px;margin:0 auto;padding:1.5rem;background:var(--bg-primary);border-radius:8px;animation:fadeIn var(--transition-normal) ease-out}.history-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem;padding-bottom:1rem;border-bottom:2px solid var(--border-color)}.history-header h2{margin:0;font-size:1.75rem;font-weight:600;color:var(--text-primary)}.history-actions{display:flex;gap:.75rem}.clear-history-btn{padding:.5rem 1rem;font-size:.9rem}.history-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:3rem;gap:1rem;color:var(--text-secondary)}.history-empty{text-align:center;padding:3rem 1rem;color:var(--text-secondary)}.history-empty p{margin:.5rem 0;font-size:1rem}.history-empty-hint{font-size:.875rem;color:var(--text-tertiary)}.history-filters{display:flex;gap:.5rem;margin-bottom:1.5rem;flex-wrap:wrap}.filter-btn{padding:.5rem 1rem;font-size:.9rem;font-weight:500;color:var(--text-secondary);background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:6px;cursor:pointer;transition:all var(--transition-fast)}.filter-btn:hover{background:var(--bg-hover);border-color:var(--border-hover);color:var(--text-primary)}.filter-btn.active{background:var(--primary-color);border-color:var(--primary-color);color:var(--text-inverse)}.history-list{display:grid;grid-template-columns:1fr;gap:1rem}.history-item{display:flex;gap:1rem;padding:1rem;background:var(--bg-secondary);border:2px solid var(--border-color);border-radius:8px;cursor:pointer;transition:all var(--transition-normal);animation:fadeInUp var(--transition-normal) ease-out}.history-item:hover{background:var(--bg-hover);border-color:var(--border-hover);transform:translateY(-2px);box-shadow:var(--shadow-md)}.history-item.selected{border-color:var(--primary-color);background:var(--bg-active);box-shadow:var(--shadow-md)}.history-item-thumbnail{flex-shrink:0;width:120px;height:120px;border-radius:6px;overflow:hidden;background:var(--bg-tertiary);border:1px solid var(--border-color)}.history-item-thumbnail img{width:100%;height:100%;object-fit:cover}.thumbnail-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;color:var(--text-tertiary)}.history-item-info{flex:1;min-width:0}.history-item-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:.75rem;gap:1rem}.history-item-title{margin:0;font-size:1rem;font-weight:600;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.history-item-time{flex-shrink:0;font-size:.875rem;color:var(--text-tertiary)}.history-item-details{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:.5rem}.detail-row{display:flex;gap:.5rem;font-size:.875rem}.detail-label{color:var(--text-secondary);font-weight:500}.detail-value{color:var(--text-primary)}.history-item-actions{display:flex;flex-direction:column;gap:.5rem;flex-shrink:0}.action-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;padding:0;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:6px;cursor:pointer;transition:all var(--transition-fast);color:var(--text-secondary)}.action-btn:hover{background:var(--bg-hover);border-color:var(--border-hover);transform:scale(1.1)}.apply-btn:hover{background:var(--primary-color);border-color:var(--primary-color);color:var(--text-inverse)}.download-btn:hover{background:var(--success-color);border-color:var(--success-color);color:var(--text-inverse)}.delete-btn:hover{background:var(--danger-color);border-color:var(--danger-color);color:var(--text-inverse)}@media(max-width:768px){.history-panel{padding:1rem}.history-header{flex-direction:column;align-items:flex-start;gap:1rem}.history-header h2{font-size:1.5rem}.history-filters{flex-direction:column}.filter-btn{width:100%;text-align:left}.history-item{flex-direction:column}.history-item-thumbnail{width:100%;height:200px}.history-item-header{flex-direction:column;align-items:flex-start}.history-item-details{grid-template-columns:1fr}.history-item-actions{flex-direction:row;justify-content:flex-end}}@media(hover:none)and (pointer:coarse){.action-btn{width:44px;height:44px}.filter-btn{min-height:44px;padding:.75rem 1rem}}.history-page{min-height:100vh;background:var(--bg-primary);padding:2rem}.history-header{max-width:1400px;margin:0 auto 2rem;text-align:center;padding-bottom:2rem;border-bottom:1px solid var(--border-color)}.history-header h1{font-size:clamp(2rem,4vw,3rem);font-weight:700;margin:0 0 1rem;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.history-header p{font-size:1.25rem;color:var(--text-secondary);margin:0}.history-content{max-width:1400px;margin:0 auto}.history-empty{text-align:center;padding:4rem 2rem;background:var(--bg-secondary);border-radius:1rem;border:1px solid var(--border-color)}.history-empty h2{font-size:1.5rem;font-weight:600;margin:0 0 1rem;color:var(--text-primary)}.history-empty p{color:var(--text-secondary);margin:.5rem 0}@media(max-width:768px){.history-page{padding:1rem}.history-header{padding-bottom:1.5rem}}.app-nav{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;background:var(--bg-primary);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:100;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:rgba(var(--bg-primary-rgb, 255, 255, 255),.8);gap:2rem}.nav-logo{display:flex;align-items:center;text-decoration:none;color:inherit;flex-shrink:0}.nav-links{display:flex;gap:2rem;align-items:center}.nav-links a{color:var(--text-primary);text-decoration:none;font-weight:600;font-size:.95rem;transition:all .3s cubic-bezier(.4,0,.2,1);position:relative;padding:.5rem 0}.nav-links a:after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background:linear-gradient(90deg,var(--accent-color),#764ba2);transition:width .3s cubic-bezier(.4,0,.2,1);border-radius:2px}.nav-links a:hover{color:var(--accent-color);transform:translateY(-1px)}.nav-links a:hover:after{width:100%}.nav-actions{display:flex;gap:.75rem;align-items:center}.nav-auth-link{color:var(--text-primary);text-decoration:none;font-weight:500;padding:.5rem 1rem;border-radius:.5rem;transition:all .3s ease}.nav-auth-link:hover{background:var(--bg-tertiary);color:var(--accent-color)}.btn-small{padding:.5rem 1rem;font-size:.9rem}.nav-user-name{color:var(--text-primary);font-weight:500;padding:.5rem 1rem;font-size:.9rem}[data-theme=dark] .app-nav{background:rgba(var(--bg-primary-rgb, 0, 0, 0),.8)}