*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg: #f5f5f7;--color-surface: #ffffff;--color-border: #e0e0e0;--color-text: #1d1d1f;--color-text-secondary: #6e6e73;--color-primary: #0071e3;--color-primary-hover: #0077ed;--color-primary-active: #006edb;--color-danger: #ff3b30;--color-success: #34c759;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .08);--shadow-md: 0 4px 12px rgba(0, 0, 0, .1);--font-mono: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.5;min-height:100vh}#app{max-width:1100px;margin:0 auto;padding:2rem 1.5rem 4rem}.app-header{text-align:center;margin-bottom:2.5rem}.app-header h1{font-size:2rem;font-weight:700;letter-spacing:-.02em;margin-bottom:.4rem}.app-header .subtitle{color:var(--color-text-secondary);font-size:1rem}.app-main{display:grid;grid-template-columns:340px 1fr;gap:2rem;align-items:start}@media(max-width:800px){.app-main{grid-template-columns:1fr}}.controls-panel{background:var(--color-surface);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-sm);border:1px solid var(--color-border);display:flex;flex-direction:column;gap:1.5rem}.control-group{display:flex;flex-direction:column;gap:.5rem}.control-label{font-size:.85rem;font-weight:600;color:var(--color-text)}.upload-zone{border:2px dashed var(--color-border);border-radius:var(--radius-md);cursor:pointer;transition:border-color .2s,background-color .2s;position:relative;overflow:hidden}.upload-zone:hover,.upload-zone.drag-over{border-color:var(--color-primary);background-color:#0071e30a}.upload-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2rem 1rem;gap:.5rem;color:var(--color-text-secondary);text-align:center}.upload-placeholder svg{opacity:.4}.upload-placeholder span{font-size:.85rem}.upload-hint{font-size:.75rem!important;opacity:.6}.upload-preview{display:flex;align-items:center;justify-content:center;padding:1.5rem;position:relative;background:repeating-conic-gradient(#f0f0f0 0% 25%,transparent 0% 50%) 50% / 16px 16px;min-height:140px}.upload-preview img{max-width:100%;max-height:120px;object-fit:contain}.btn-remove{position:absolute;top:8px;right:8px;width:28px;height:28px;border-radius:50%;border:none;background:#0009;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s}.btn-remove:hover{background:var(--color-danger)}.color-input-row{display:flex;gap:.5rem;align-items:center}.color-input-row input[type=color]{width:44px;height:44px;border:2px solid var(--color-border);border-radius:var(--radius-sm);cursor:pointer;padding:2px;background:none}.color-input-row input[type=color]::-webkit-color-swatch-wrapper{padding:2px}.color-input-row input[type=color]::-webkit-color-swatch{border:none;border-radius:4px}.color-input-row input[type=text]{flex:1;height:44px;border:2px solid var(--color-border);border-radius:var(--radius-sm);padding:0 .75rem;font-size:.95rem;font-family:var(--font-mono);text-transform:uppercase;transition:border-color .2s}.color-input-row input[type=text]:focus{outline:none;border-color:var(--color-primary)}input[type=range]{width:100%;height:6px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:var(--color-border);border-radius:3px;outline:none}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;background:var(--color-primary);cursor:pointer;border:2px solid white;box-shadow:var(--shadow-sm)}input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--color-primary);cursor:pointer;border:2px solid white;box-shadow:var(--shadow-sm)}.range-labels{display:flex;justify-content:space-between;font-size:.75rem;color:var(--color-text-secondary)}.control-label-row{display:flex;align-items:center;justify-content:space-between}.btn-auto-padding{display:inline-flex;align-items:center;gap:.3rem;padding:.2rem .55rem;border:1px solid var(--color-border);border-radius:6px;background:var(--color-surface);color:var(--color-text-secondary);font-size:.72rem;font-weight:600;cursor:pointer;transition:border-color .2s,color .2s,background .2s;line-height:1}.btn-auto-padding:hover{border-color:var(--color-primary);color:var(--color-primary);background:#0071e30f}.btn-auto-padding:active{transform:scale(.96)}.btn-auto-padding svg{flex-shrink:0}#padding-value.auto-badge{color:var(--color-primary)}#padding-value.auto-badge:after{content:" (auto)";font-size:.72rem;font-weight:500;opacity:.8}.platform-selector{display:flex;gap:.5rem}.platform-chip{flex:1;cursor:pointer}.platform-chip input[type=checkbox]{display:none}.platform-chip-label{display:flex;align-items:center;justify-content:center;gap:.4rem;padding:.5rem .75rem;border:2px solid var(--color-border);border-radius:var(--radius-sm);font-size:.85rem;font-weight:600;color:var(--color-text-secondary);transition:border-color .2s,color .2s,background .2s;-webkit-user-select:none;user-select:none}.platform-chip-label:hover{border-color:var(--color-primary);color:var(--color-primary)}.platform-chip input[type=checkbox]:checked+.platform-chip-label{border-color:var(--color-primary);background:#0071e314;color:var(--color-primary)}.btn-generate{display:flex;align-items:center;justify-content:center;gap:.5rem;width:100%;height:48px;border:none;border-radius:var(--radius-md);background:var(--color-primary);color:#fff;font-size:.95rem;font-weight:600;cursor:pointer;transition:background .2s,opacity .2s,transform .1s}.btn-generate:hover:not(:disabled){background:var(--color-primary-hover)}.btn-generate:active:not(:disabled){background:var(--color-primary-active);transform:scale(.98)}.btn-generate:disabled{opacity:.4;cursor:not-allowed}.btn-generate.generating{pointer-events:none;opacity:.7}.preview-panel{background:var(--color-surface);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-sm);border:1px solid var(--color-border);min-height:400px}.preview-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:400px;color:var(--color-text-secondary);gap:1rem}.preview-empty p{font-size:.95rem}.preview-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1.5rem}.preview-card{display:flex;flex-direction:column;align-items:center;gap:.5rem;transition:opacity .25s ease,transform .25s ease}.preview-card h3{font-size:.85rem;font-weight:600}.preview-desc{font-size:.75rem;color:var(--color-text-secondary)}.preview-canvas-wrap{position:relative;width:200px;height:200px;border-radius:var(--radius-sm);overflow:hidden;background:repeating-conic-gradient(#e8e8e8,#e8e8e8 25%,#fff 0%,#fff 50%) 50% / 16px 16px;box-shadow:var(--shadow-sm)}.preview-canvas-wrap canvas{display:block;width:100%;height:100%}.ios-mask{position:absolute;top:0;right:0;bottom:0;left:0;border-radius:44px;box-shadow:0 0 0 200px var(--color-bg);pointer-events:none}.android-mask{position:absolute;top:0;right:0;bottom:0;left:0;border-radius:50%;box-shadow:0 0 0 200px var(--color-bg);pointer-events:none}.preview-splash-wrap{width:240px;height:160px;border-radius:var(--radius-sm)}.preview-splash-wrap canvas{display:block}.preview-favicon-wrap{width:48px;height:48px;border-radius:4px}.preview-favicon-wrap canvas{display:block;image-rendering:pixelated}.dark-mode-label{display:flex;align-items:center;justify-content:space-between}.toggle-switch{position:relative;display:inline-block;width:44px;height:24px;cursor:pointer}.toggle-switch input{opacity:0;width:0;height:0}.toggle-slider{position:absolute;top:0;right:0;bottom:0;left:0;background-color:var(--color-border);border-radius:24px;transition:background-color .2s}.toggle-slider:before{content:"";position:absolute;width:18px;height:18px;left:3px;bottom:3px;background-color:#fff;border-radius:50%;transition:transform .2s;box-shadow:var(--shadow-sm)}.toggle-switch input:checked+.toggle-slider{background-color:var(--color-primary)}.toggle-switch input:checked+.toggle-slider:before{transform:translate(20px)}.dark-mode-options{display:flex;flex-direction:column;gap:.5rem;margin-top:.5rem;padding:.75rem;background:var(--color-bg);border-radius:var(--radius-sm);border:1px solid var(--color-border)}.dark-mode-options .color-input-row{display:flex;gap:.5rem;align-items:center;min-width:0}.dark-mode-options .color-input-row input[type=color]{width:36px;height:36px;min-width:36px;border:2px solid var(--color-border);border-radius:var(--radius-sm);cursor:pointer;padding:2px;background:none}.dark-mode-options .color-input-row input[type=text]{flex:1;min-width:0;height:36px;border:2px solid var(--color-border);border-radius:var(--radius-sm);padding:0 .5rem;font-size:.85rem;font-family:var(--font-mono);text-transform:uppercase;transition:border-color .2s}.dark-mode-options .color-input-row input[type=text]:focus{outline:none;border-color:var(--color-primary)}.color-label{font-size:.78rem;color:var(--color-text-secondary);white-space:nowrap;font-weight:500}.config-section{margin-top:2.5rem;background:var(--color-surface);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-sm);border:1px solid var(--color-border)}.config-section h2{font-size:1.1rem;font-weight:700;margin-bottom:.3rem}.config-desc{font-size:.85rem;color:var(--color-text-secondary);margin-bottom:1rem}.config-wrapper{position:relative}.config-code{background:#1e1e1e;color:#d4d4d4;border-radius:var(--radius-md);padding:1.25rem;overflow-x:auto;font-family:var(--font-mono);font-size:.82rem;line-height:1.6;white-space:pre;-moz-tab-size:2;tab-size:2}.btn-copy{position:absolute;top:10px;right:10px;padding:.35rem .75rem;border:1px solid rgba(255,255,255,.15);border-radius:6px;background:#ffffff1a;color:#d4d4d4;font-size:.78rem;cursor:pointer;transition:background .2s}.btn-copy:hover{background:#fff3}.btn-copy.copied{background:var(--color-success);color:#fff;border-color:transparent}.toast{position:fixed;bottom:2rem;left:50%;transform:translate(-50%) translateY(1rem);background:#1d1d1f;color:#fff;padding:.75rem 1.5rem;border-radius:var(--radius-md);font-size:.9rem;font-weight:500;box-shadow:var(--shadow-md);opacity:0;transition:opacity .3s ease,transform .3s ease;pointer-events:none;z-index:1000;white-space:nowrap}.toast-visible{opacity:1;transform:translate(-50%) translateY(0)}