:root{--bg-primary: #0d1117;--bg-secondary: #161b22;--bg-tertiary: #21262d;--bg-hover: #30363d;--text-primary: #f0f6fc;--text-secondary: #8b949e;--text-muted: #6e7681;--accent-primary: #58a6ff;--accent-secondary: #1f6feb;--accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--border-color: #30363d;--border-subtle: #21262d;--success: #3fb950;--warning: #d29922;--error: #f85149;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 12px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .5);--shadow-glow: 0 0 20px rgba(88, 166, 255, .3);--font-sans: "Outfit", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", "Consolas", monospace;--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--space-2xl: 48px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-full: 9999px;--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .4s ease}[data-theme=light]{--bg-primary: #ffffff;--bg-secondary: #f6f8fa;--bg-tertiary: #eaeef2;--bg-hover: #d0d7de;--text-primary: #1f2328;--text-secondary: #57606a;--text-muted: #8c959f;--accent-primary: #0969da;--accent-secondary: #0550ae;--accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--border-color: #d0d7de;--border-subtle: #eaeef2;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .1);--shadow-md: 0 4px 12px rgba(0, 0, 0, .12);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .15);--shadow-glow: 0 0 20px rgba(9, 105, 218, .2)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;overflow-x:hidden}body:before{content:"";position:fixed;inset:0;background:radial-gradient(circle at 20% 50%,rgba(88,166,255,.08) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(118,75,162,.08) 0%,transparent 50%),radial-gradient(circle at 40% 80%,rgba(102,126,234,.05) 0%,transparent 40%);pointer-events:none;z-index:-1}.app{max-width:1400px;margin:0 auto;padding:var(--space-md);min-height:100vh;display:flex;flex-direction:column}.header{padding:var(--space-md) 0;margin-bottom:var(--space-lg)}.header-content{display:flex;justify-content:space-between;align-items:center}.logo{display:flex;align-items:center;gap:var(--space-sm)}.logo-img{height:32px;width:auto}[data-theme=dark] .logo-img,:root:not([data-theme]) .logo-img{filter:brightness(0) invert(1)}.version-badge{font-size:.75rem;padding:2px 8px;background:var(--bg-tertiary);border-radius:var(--radius-full);color:var(--text-secondary);font-weight:500}.nav{display:flex;align-items:center;gap:var(--space-md)}.nav-link{display:flex;align-items:center;gap:var(--space-xs);color:var(--text-secondary);text-decoration:none;font-size:.9rem;font-weight:500;padding:var(--space-sm) var(--space-md);border-radius:var(--radius-md);transition:all var(--transition-fast)}.nav-link:hover{color:var(--text-primary);background:var(--bg-tertiary)}.theme-toggle{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border:none;background:var(--bg-tertiary);border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}.theme-toggle:hover{background:var(--bg-hover);color:var(--text-primary)}.theme-toggle .moon,[data-theme=light] .theme-toggle .sun{display:none}[data-theme=light] .theme-toggle .moon{display:block}.icon{width:18px;height:18px}.main{flex:1;display:flex;flex-direction:column;gap:var(--space-lg)}.direction-container{display:flex;justify-content:center;align-items:center;gap:var(--space-md)}.mode-container{display:flex;justify-content:center;margin-bottom:var(--space-md)}.mode-toggle{display:flex;gap:var(--space-xs);padding:var(--space-xs);background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md)}.mode-btn{display:flex;align-items:center;gap:var(--space-xs);padding:var(--space-sm) var(--space-md);border:none;background:transparent;border-radius:var(--radius-sm);color:var(--text-secondary);font-size:.9rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.mode-btn:hover{color:var(--text-primary);background:var(--bg-tertiary)}.mode-btn.active{color:var(--accent-primary);background:var(--bg-tertiary)}.mode-btn .icon{width:16px;height:16px}.direction-toggle{display:flex;align-items:center;gap:var(--space-lg);padding:var(--space-md) var(--space-xl);background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-normal);box-shadow:var(--shadow-sm)}.direction-toggle:hover{background:var(--bg-tertiary);box-shadow:var(--shadow-md)}.direction-label{font-size:1.1rem;font-weight:600;color:var(--text-secondary);transition:color var(--transition-fast)}.direction-label.active,.direction-label.left{color:var(--accent-primary)}.direction-arrow{font-size:1.5rem;color:var(--text-muted);transition:transform var(--transition-normal)}.direction-toggle.reversed .direction-arrow{transform:rotate(180deg)}.swap-btn{display:flex;align-items:center;justify-content:center;width:48px;height:48px;border:1px solid var(--border-color);background:var(--bg-secondary);border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}.swap-btn:hover{background:var(--accent-primary);border-color:var(--accent-primary);color:#fff;transform:scale(1.05)}.swap-btn:active{transform:scale(.95)}.editor-container{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-lg);flex:1;min-height:400px}@media (max-width: 900px){.editor-container{grid-template-columns:1fr}}.editor-panel{display:flex;flex-direction:column;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);transition:all var(--transition-normal)}.editor-panel:focus-within{border-color:var(--accent-primary);box-shadow:var(--shadow-glow)}.panel-header{display:flex;justify-content:space-between;align-items:center;padding:var(--space-md);background:var(--bg-tertiary);border-bottom:1px solid var(--border-color)}.panel-title{font-size:.9rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em}.panel-actions{display:flex;gap:var(--space-xs)}.action-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border:none;background:transparent;border-radius:var(--radius-sm);color:var(--text-muted);cursor:pointer;transition:all var(--transition-fast)}.action-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.action-btn:active{transform:scale(.9)}.editor{flex:1;width:100%;padding:var(--space-lg);background:transparent;border:none;resize:none;font-family:var(--font-mono);font-size:.95rem;line-height:1.7;color:var(--text-primary);outline:none}.editor::placeholder{color:var(--text-muted)}.editor.output{background:var(--bg-primary);color:var(--success)}.status-bar{display:flex;justify-content:space-between;align-items:center;padding:var(--space-sm) var(--space-md);background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);font-size:.8rem}.status-left,.status-right{display:flex;align-items:center;gap:var(--space-sm)}.status-item{color:var(--text-muted)}.status-divider{color:var(--border-color)}.powered-by a{color:var(--accent-primary);text-decoration:none}.powered-by a:hover{text-decoration:underline}.footer{padding:var(--space-lg) 0;text-align:center;font-size:.875rem;color:var(--text-secondary);margin-top:auto}.footer a{color:inherit;text-decoration:none;opacity:.7;transition:opacity var(--transition-fast)}.footer a:hover{color:var(--text-primary);text-decoration:underline;opacity:1}.examples-section{margin-top:var(--space-2xl);padding-top:var(--space-xl);border-top:1px solid var(--border-subtle)}.section-title{font-size:1.25rem;font-weight:600;margin-bottom:var(--space-lg);color:var(--text-secondary)}.examples-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:var(--space-md)}.example-card{display:flex;flex-direction:column;align-items:center;padding:var(--space-lg);background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);text-align:center}.example-card:hover{background:var(--bg-tertiary);border-color:var(--accent-primary);transform:translateY(-2px);box-shadow:var(--shadow-md)}.example-preview{font-size:2rem;margin-bottom:var(--space-sm);opacity:.8}.example-code{font-family:var(--font-mono);font-size:.75rem;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}.toast{position:fixed;bottom:var(--space-xl);left:50%;transform:translate(-50%) translateY(100px);padding:var(--space-md) var(--space-xl);background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transition:all var(--transition-normal);z-index:1000}.toast.show{transform:translate(-50%) translateY(0);opacity:1;visibility:visible}.toast-message{font-size:.9rem;font-weight:500;color:var(--text-primary)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.editor-panel{animation:fadeIn .4s ease backwards}.input-panel{animation-delay:.1s}.output-panel{animation-delay:.2s}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}::selection{background:var(--accent-primary);color:#fff}button:focus-visible,textarea:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}@media print{.header,.nav,.examples-section,.status-bar,.panel-actions{display:none}body:before{display:none}.editor-container{grid-template-columns:1fr}}