:root{--bg-dark: #121212;--bg-panel: #1e1e1e;--bg-card: #252525;--primary: #bb86fc;--primary-variant: #3700b3;--secondary: #03dac6;--text-main: #ffffff;--text-muted: #b0b0b0;--border: #333333;--danger: #cf6679}*{box-sizing:border-box}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-panel)}::-webkit-scrollbar-thumb{background:#3d3056;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#5a4180}*{scrollbar-width:thin;scrollbar-color:#3d3056 var(--bg-panel)}body{margin:0;padding:0;font-family:Inter,sans-serif;background-color:var(--bg-dark);color:var(--text-main);height:100vh;overflow:hidden}#root{height:100%;display:flex;flex-direction:column}.app-header{height:60px;display:flex;align-items:center;padding:0 24px;border-bottom:1px solid var(--border);background-color:var(--bg-panel);justify-content:space-between}.brand{display:flex;align-items:center;gap:12px;font-weight:600;font-size:1.2rem;color:var(--primary);transition:opacity .15s,filter .15s}.brand:hover{filter:drop-shadow(0 0 6px rgba(187,134,252,.4));transform:scale(1.05)}.header-nav{display:flex;gap:4px}.nav-link{display:flex;align-items:center;gap:6px;padding:8px 16px;border-radius:6px;color:var(--text-muted);text-decoration:none;font-size:.9rem;font-weight:500;transition:background .15s,color .15s}.nav-link:hover{background:#ffffff0d;color:var(--text-main)}.nav-link.active{background:#bb86fc26;color:var(--primary)}.lang-toggle{padding:6px 12px;font-size:.85rem}@media(max-width:600px){.app-header{height:48px;padding:0 12px}.brand img{height:36px!important}.nav-link{padding:6px 10px;gap:0}.nav-label{display:none}.lang-toggle{padding:6px 8px}.lang-toggle .nav-label{display:none}}.main-workspace{display:flex;flex:1;overflow:hidden}.frame-panel{flex:1;display:flex;flex-direction:column;overflow:hidden}.panel-toolbar{padding:16px;display:flex;gap:12px;align-items:center;border-bottom:1px solid 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16px;font-size:.9rem;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted)}.preview-container{width:100%;aspect-ratio:1;background:#000;border-radius:8px;overflow:hidden;display:flex;align-items:center;justify-content:center;position:relative;background-image:linear-gradient(45deg,#2a2a2a 25%,transparent 25%),linear-gradient(-45deg,#2a2a2a 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#2a2a2a 75%),linear-gradient(-45deg,transparent 75%,#2a2a2a 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0px}.preview-container canvas{max-width:100%;max-height:100%}.preview-container.picking{cursor:crosshair}.eyedropper-active-indicator{position:absolute;top:10px;right:10px;background:var(--primary);color:#000;padding:4px 8px;border-radius:4px;font-size:.8rem;font-weight:700;pointer-events:none}.control-group{margin-bottom:16px}.control-group 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var(--border);color:var(--text-main)}.btn-secondary:hover{background:#ffffff0d}.btn:disabled{opacity:.35;cursor:not-allowed}.btn:disabled:hover{opacity:.35}.btn-icon{padding:8px;border-radius:50%}.color-preview{width:30px;height:30px;border-radius:50%;border:2px solid var(--border);display:inline-block;vertical-align:middle}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--text-muted);gap:32px;padding:40px 20px}.empty-drop-zone{display:flex;flex-direction:column;align-items:center;gap:8px;padding:36px 48px;border:2px dashed var(--border);border-radius:12px;transition:border-color .2s}.file-drag-over .empty-drop-zone{border-color:var(--accent, var(--primary))}.empty-drop-zone 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