.app-card{display:flex;flex-direction:column;background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 1px 3px #0000001a;transition:all .3s ease;cursor:pointer}.app-card:hover{transform:translateY(-4px);box-shadow:0 4px 12px #00000026}.app-card:active{transform:translateY(-2px);box-shadow:0 2px 8px #0000001f}.app-card-image{position:relative;width:100%;padding-top:100%;background:linear-gradient(135deg,#667eea,#764ba2);overflow:hidden}.app-card-image img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover}.app-card-placeholder{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:3rem;font-weight:700}.app-card-badge{position:absolute;top:8px;right:8px;padding:4px 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#333;flex-wrap:wrap}.clear-btn{padding:.5rem 1rem;background-color:#ff4d4f;color:#fff;border:none;border-radius:4px;cursor:pointer;font-weight:600;transition:all .3s ease;white-space:nowrap}.clear-btn:hover{background-color:#ff7875;transform:translateY(-2px)}.save-btn{padding:.5rem 1rem;background-color:#52c41a;color:#fff;border:none;border-radius:4px;cursor:pointer;font-weight:600;transition:all .3s ease;white-space:nowrap}.save-btn:hover{background-color:#73d13d;transform:translateY(-2px)}.back-btn{padding:.5rem 1rem;background-color:#1890ff;color:#fff;border:none;border-radius:4px;cursor:pointer;font-weight:600;transition:all .3s ease;white-space:nowrap}.back-btn:hover{background-color:#40a9ff;transform:translateY(-2px)}.drawing-info{color:#fff;font-size:.9rem;flex:1}.hint{color:#aaa;font-size:.85rem}@media (max-width: 768px){.color-palette{flex-direction:column;align-items:flex-start;gap:.5rem}.color-options{width:100%}.brush-size-control{width:100%;flex-direction:column;align-items:flex-start}.brush-slider{width:100%}.drawing-controls{flex-direction:column;align-items:stretch}.clear-btn,.save-btn,.back-btn,.drawing-info{width:100%}}.drawing-info p{margin:.25rem 0}.hint{color:#999;font-size:.8rem}@media (max-width: 768px){.drawing-controls{flex-direction:column;align-items:stretch}.clear-btn{width:100%}.drawing-info{text-align:center}.drawing-info p{font-size:.8rem}}@media (max-width: 480px){.drawing-controls{padding:.75rem}.clear-btn{padding:.4rem .8rem;font-size:.9rem}.drawing-info{font-size:.75rem}.hint{font-size:.7rem}}.toolbar{background-color:#000000e6;padding:1rem;border-top:1px solid #333;z-index:4;position:relative;max-height:40vh;overflow-y:auto}.draw-mode-selector{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;margin-bottom:.75rem;padding-bottom:.75rem;border-bottom:1px solid #444}.draw-mode-selector label{color:#fff;font-weight:600;white-space:nowrap}.mode-options{display:flex;gap:.5rem}.mode-btn{padding:.5rem 1rem;background-color:#ffffff1a;color:#fff;border:2px solid transparent;border-radius:4px;cursor:pointer;font-weight:600;transition:all .2s ease;white-space:nowrap}.mode-btn:hover{background-color:#fff3;transform:translateY(-2px)}.mode-btn.selected{background-color:#1890ff;border-color:#40a9ff;box-shadow:0 0 8px #1890ff80}.eraser-btn{background:linear-gradient(135deg,#f0f0f0,#d0d0d0)!important;font-size:18px;display:flex;align-items:center;justify-content:center;border:2px solid #999!important}.eraser-btn.selected{background:linear-gradient(135deg,#fff,#e0e0e0)!important;border-color:#fff!important;box-shadow:0 0 8px #fffc!important}.stencils{display:flex;align-items:center;gap:1rem;flex-wrap:wrap}.stencils label{color:#fff;font-weight:600;white-space:nowrap}.stencil-options{display:flex;gap:.5rem;flex-wrap:wrap}.stencil-btn{width:40px;height:40px;background-color:#ffffff1a;border:2px solid transparent;border-radius:4px;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center;color:#fff;padding:5px}.stencil-btn:hover{transform:scale(1.1);border-color:#fff;background-color:#fff3}.stencil-btn.selected{border-color:#1890ff;box-shadow:0 0 8px #1890ff80;transform:scale(1.15);background-color:#1890ff4d}.stencil-btn svg{width:100%;height:100%}.app{min-height:100vh;display:flex;flex-direction:column;background-color:var(--bg-color, #f5f5f5)}.header{background-color:var(--primary-color, #1890ff);color:#fff;padding:1rem;display:flex;justify-content:space-between;align-items:center;box-shadow:0 2px 8px #0000001a;position:sticky;top:0;z-index:100}.header-title{margin:0;font-size:1.3rem;font-weight:600;flex:1}.user-info{display:flex;gap:1rem;align-items:center;flex-wrap:wrap}.user-name{font-size:.9rem}.token-balance{font-size:.9rem;padding:.4rem .8rem;background-color:#fff3;border-radius:4px}.logout-btn{padding:.4rem .8rem;border:none;border-radius:4px;background-color:#fff3;color:#fff;cursor:pointer;font-weight:500;transition:background-color .3s ease}.logout-btn:hover{background-color:#ffffff4d}.main-content{flex:1;display:flex;flex-direction:column}.login-btn{padding:.6rem 1.2rem;border:none;border-radius:4px;background-color:var(--primary-color, #1890ff);color:#fff;cursor:pointer;font-weight:500;transition:all .3s ease;font-size:.95rem}.login-btn:hover:not(:disabled){opacity:.9;transform:translateY(-2px);box-shadow:0 2px 8px #1890ff4d}.login-form{width:100%}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;color:var(--text-color, #262626);font-weight:500}.form-input{width:100%;padding:.75rem;border:1px solid var(--border-color, #d9d9d9);border-radius:4px;font-size:1rem;transition:border-color .3s ease;box-sizing:border-box}.form-input:focus{outline:none;border-color:var(--primary-color, #1890ff);box-shadow:0 0 0 2px #1890ff33}.error-message{color:#ff4d4f;padding:.75rem;margin-bottom:1.5rem;background-color:#fff1f0;border:1px solid #ffccc7;border-radius:4px;font-size:.95rem}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:1rem}.modal-content{background:#fff;border-radius:8px;padding:2rem;max-width:400px;width:100%;position:relative;box-shadow:0 4px 16px #00000026}.modal-close{position:absolute;top:1rem;right:1rem;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-muted, #8c8c8c);transition:color .3s ease}.modal-close:hover{color:var(--text-color, #262626)}.modal-title{margin:0 0 .5rem;font-size:1.3rem;font-weight:600;color:var(--text-color, #262626)}.modal-subtitle{margin:0 0 1.5rem;color:var(--text-muted, #8c8c8c)}@media (max-width: 768px){.header{flex-direction:column;gap:1rem;padding:.75rem}.header-title{font-size:1.1rem;width:100%;text-align:center}.user-info{width:100%;justify-content:center;gap:.75rem}.user-name,.token-balance{font-size:.8rem}.logout-btn{padding:.3rem .6rem;font-size:.8rem}}@media (max-width: 480px){.header{padding:.5rem;gap:.75rem}.header-title{font-size:1rem}.user-info{gap:.5rem}.modal-content{padding:1.5rem;max-width:90%}.modal-title{font-size:1.1rem}}:root{--primary-color: #1890ff;--success-color: #52c41a;--error-color: #ff4d4f;--warning-color: #faad14;--text-color: #262626;--text-light: #8c8c8c;--border-color: #d9d9d9;--bg-color: #fafafa}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica 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ease}.login-btn{background-color:var(--primary-color);color:#fff}.login-btn:hover:not(:disabled){background-color:#0050b3}.login-btn:disabled{opacity:.6;cursor:not-allowed}.logout-btn{background-color:var(--error-color);color:#fff}.logout-btn:hover{background-color:#d9363e}.main-content{flex:1;padding:2rem;max-width:1200px;margin:0 auto;width:100%}.dashboard,.login-prompt{background-color:#fff;padding:2rem;border-radius:8px;box-shadow:0 1px 4px #00000014}.dashboard h2,.login-prompt h2{color:var(--text-color);margin-bottom:1rem;font-size:1.25rem}.dashboard p,.login-prompt p{color:var(--text-light);line-height:1.6}.footer{background-color:#fff;padding:1.5rem 2rem;text-align:center;border-top:1px solid var(--border-color);color:var(--text-light);font-size:.875rem}@media (max-width: 768px){.header{flex-direction:column;gap:1rem;align-items:flex-start}.header h1{font-size:1.25rem}.user-info{width:100%;justify-content:space-between}.main-content{padding:1rem}.dashboard,.login-prompt{padding:1.5rem}}