:root{--bg-color: #121212;--panel-bg: #1e1e1e;--text-main: #e0e0e0;--text-muted: #a0a0a0;--accent: #00dbb5;--accent-hover: #00b395;--danger: #ff4757;--border: #333;--font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;--selection: rgba(0, 219, 181, .2);--structure-bg: rgba(255, 71, 87, .15);--structure-text: #ff8a9b}*{box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-color);color:var(--text-main);margin:0;height:100vh;display:flex;flex-direction:column;overflow:hidden}button{background-color:var(--border);color:var(--text-main);border:none;padding:.6rem;border-radius:4px;cursor:pointer;font-weight:500;font-size:.85rem;transition:.2s;display:inline-flex;align-items:center;justify-content:center;gap:6px}button:hover:not(:disabled){background-color:#444}button:disabled{opacity:.5;cursor:not-allowed}button.primary{background-color:var(--accent);color:#121212}button.primary:hover:not(:disabled){background-color:var(--accent-hover)}button.danger{background-color:#ff47571a;color:var(--danger);border:1px solid var(--danger)}button.danger:hover:not(:disabled){background-color:var(--danger);color:#fff}button.icon-btn{padding:.4rem .8rem}.app-container{display:flex;flex:1;overflow:hidden}.pane-header{padding:.5rem 1rem;background:#252525;font-size:.75rem;font-weight:700;border-bottom:1px solid var(--border);color:var(--text-muted);display:flex;justify-content:space-between;align-items:center;flex-shrink:0}.hidden{display:none!important}.sidebar{width:280px;background:var(--panel-bg);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:1rem;gap:1.5rem;flex-shrink:0}.hex-byte.structure{background-color:var(--structure-bg);color:var(--structure-text);border-radius:2px}.hex-byte.structure:hover{background-color:#ff475766;color:#fff}.hex-byte.changed{color:var(--accent);font-weight:700}.hex-byte.editing{background-color:var(--accent)!important;color:#000!important;border-radius:2px}.mobile-tab-bar{display:none}@media(max-width:768px){.mobile-tab-bar{display:flex;position:fixed;bottom:0;left:0;width:100%;height:60px;background:#181818;border-top:1px solid var(--border);justify-content:space-around;align-items:center;z-index:1000}.mobile-tab{background:transparent;border:none;color:var(--text-muted);font-size:.7rem;flex-direction:column;gap:4px;padding:2px}.mobile-tab.active{color:var(--accent)}.mobile-tab .tab-icon{font-size:1.2rem}.app-container{display:block;position:relative;width:100%;height:100vh;overflow:hidden}.resizer{display:none!important}.sidebar.mobile-visible{display:flex!important;position:absolute!important;top:40%!important;left:0;width:100%!important;height:calc(60% - 60px)!important;border-right:none!important;border-top:1px solid var(--border);z-index:50;overflow-y:auto}.main-area{display:block!important;position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;pointer-events:auto;border:none!important}.main-area>div.mobile-visible:not(.editor-pane){display:flex!important;position:absolute!important;top:50px!important;left:0;width:100%!important;height:calc(40% - 50px)!important;z-index:40;background:#000}.pane-header.mobile-visible{display:flex!important;position:absolute!important;top:0;left:0;width:100%!important;height:50px!important;z-index:200}.editor-pane.mobile-visible{display:block!important;position:absolute!important;top:50px!important;left:0;width:100%!important;height:calc(100% - 110px)!important;z-index:100;background:var(--bg-color)}.editor-pane>.hex-editor{position:absolute!important;top:0;left:0;width:100%!important;height:50%!important;border-bottom:1px solid var(--border);z-index:5}.editor-pane>.structure-tree{position:absolute!important;top:50%;left:0;width:100%!important;height:50%!important;display:flex!important;flex-direction:column!important;background:#1a1a1a!important;border-right:none!important;border-top:none!important;z-index:5}.mobile-hidden{display:none!important}.mobile-visible{display:flex!important;position:absolute;top:0;left:0;width:100%;height:calc(100% - 60px);z-index:100;background:var(--bg-color);overflow:auto}.hex-byte.editing input{font-size:16px!important;transform:scale(.85);transform-origin:center;width:120%!important;margin-left:-10%}}