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.btn{flex:1;border-top-right-radius:0;border-bottom-right-radius:0;border-right:none;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.btn-toggle{padding:.75rem .5rem;font-size:1.25rem;background:var(--bg-tertiary);color:var(--text-tertiary);border:1px solid var(--border);border-top-right-radius:4px;border-bottom-right-radius:4px;cursor:pointer;transition:all .2s ease;width:45px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.btn-toggle:hover{background:var(--bg-secondary);color:var(--text-primary);border-color:var(--accent-primary)}.btn-toggle.active{background:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.btn-toggle.active:hover{background:var(--accent-secondary);border-color:var(--accent-secondary)}.btn-tertiary{background:var(--bg-tertiary);color:var(--accent-secondary);border:1px solid 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ease}.tab:hover{color:var(--text-primary);background:var(--bg-secondary)}.tab.active{color:var(--accent-secondary);border-bottom-color:var(--accent-primary)}.app-content{animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media(max-width:768px){.app{padding:1rem .5rem}.app-title{font-size:2rem}.app-subtitle{font-size:1rem}.tab{padding:.75rem 1rem;font-size:.875rem}}:root{--bg-primary: #0a0a0a;--bg-secondary: #1a1a1a;--bg-tertiary: #2a2a2a;--text-primary: #f4f4f4;--text-secondary: #c6c6c6;--text-tertiary: #8d8d8d;--accent-primary: #0f62fe;--accent-secondary: #78a9ff;--success: #42be65;--warning: #f1c21b;--danger: #da1e28;--border: #393939;--border-subtle: #262626}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica 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