*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);min-height:100vh;padding:20px}.container{max-width:1200px;margin:0 auto}.header{text-align:center;margin-bottom:40px;animation:fadeInDown .6s ease-out}.header h1{color:#fff;font-size:3rem;font-weight:800;margin-bottom:10px;text-shadow:0 2px 10px rgba(0,0,0,.2)}.header p{color:#ffffffe6;font-size:1.1rem}.main-card{background:white;border-radius:20px;box-shadow:0 20px 60px #0000004d;overflow:hidden;animation:fadeInUp .6s ease-out}.mode-selector{display:flex;background:#f8f9fa;padding:10px;gap:10px}.mode-btn{flex:1;padding:15px 20px;border:none;background:white;color:#6c757d;font-size:1rem;font-weight:600;border-radius:12px;cursor:pointer;transition:all .3s 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#667eea1a}.file-upload-wrapper{position:relative;margin-bottom:20px}.file-input{display:none}.file-label{display:flex;align-items:center;justify-content:center;gap:10px;padding:20px;border:2px dashed #cbd5e0;border-radius:12px;cursor:pointer;transition:all .3s ease;background:#f7fafc}.file-label:hover{border-color:#667eea;background:#edf2f7}.file-label.has-file{border-color:#667eea;background:#f0f4ff}.file-label i{font-size:1.5rem;color:#667eea}.preview-image{margin-top:20px;border-radius:12px;overflow:hidden;animation:fadeIn .3s ease}.preview-image img{width:100%;height:auto;display:block}.generate-btn{width:100%;padding:18px;border:none;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff;font-size:1.1rem;font-weight:600;border-radius:12px;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;gap:10px}.generate-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 10px 25px 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ease;z-index:1000}.diffusion-container{position:relative;width:400px;height:400px;border-radius:16px;overflow:hidden;box-shadow:0 10px 40px #0003;margin-bottom:30px}#diffusionCanvas{display:block;width:100%;height:100%}.diffusion-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,rgba(102,126,234,.1) 0%,rgba(118,75,162,.1) 100%);pointer-events:none}.loading-info{text-align:center;max-width:400px}.step-counter{display:flex;align-items:baseline;justify-content:center;gap:8px;margin-bottom:20px;font-weight:600}.step-label{color:#718096;font-size:.9rem}.step-number{color:#667eea;font-size:2rem;font-weight:800;text-shadow:0 2px 10px rgba(102,126,234,.3)}.step-total{color:#a0aec0;font-size:1.2rem}.progress-bar-container{width:100%;height:8px;background:#e2e8f0;border-radius:10px;overflow:hidden;margin-bottom:20px}.progress-bar{height:100%;background:linear-gradient(90deg,#667eea 0%,#764ba2 100%);transition:width .3s ease;box-shadow:0 0 10px #667eea80}.loading-text{color:#2d3748;font-weight:600;font-size:1.1rem;margin-bottom:8px}.loading-subtext{color:#718096;font-size:.9rem}.error-message{background:#fed7d7;color:#c53030;padding:15px 20px;border-radius:12px;margin-top:20px;display:flex;align-items:center;gap:10px;animation:shake .5s ease}.error-message i{font-size:1.2rem}.history-section{margin-top:40px}.history-title{color:#fff;font-size:1.5rem;font-weight:700;margin-bottom:20px}.history-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px}.history-item{background:white;border-radius:12px;overflow:hidden;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 15px #0003}.history-item:hover{transform:translateY(-5px);box-shadow:0 10px 30px #0000004d}.history-item img{width:100%;height:200px;object-fit:cover}.history-info{padding:12px}.history-prompt{font-size:.85rem;color:#4a5568;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-30px)}to{opacity:1;transform:translateY(0)}}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-10px)}75%{transform:translate(10px)}}@media (max-width: 768px){.header h1{font-size:2rem}.content-area{padding:25px}.mode-selector{flex-direction:column}.history-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}.diffusion-container{width:100%;max-width:300px;height:300px}.loading-info{max-width:300px}.step-number{font-size:1.5rem}}