.app{height:100vh;min-height:100vh;background:radial-gradient(1200px 600px at 20% -10%,var(--bg-accent-soft),transparent 55%),radial-gradient(900px 500px at 100% 0%,var(--bg-accent-soft-2),transparent 50%),var(--bg-primary);color:var(--text-primary);display:flex;flex-direction:column}.app-header{display:grid;grid-template-columns:minmax(120px,1fr) auto minmax(320px,1fr);align-items:center;gap:var(--space-lg);padding:var(--space-lg) var(--space-2xl);background-color:var(--bg-secondary);border-bottom:1px solid var(--border-primary);box-shadow:var(--shadow-elevated);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);flex-shrink:0}.header-left{display:flex;align-items:center}.header-center{text-align:center}h1{margin:0;font-size:var(--font-size-xl);color:var(--text-primary);font-weight:var(--font-weight-semibold);letter-spacing:.02em;font-family:var(--font-family-display)}.header-subtitle{margin:0;font-size:var(--font-size-sm);color:var(--text-muted)}.header-buttons{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:var(--space-sm)}main{flex:1;overflow:hidden;min-height:0;display:flex}.editor-container{flex:1;min-height:0;padding:var(--space-xl) var(--space-2xl) var(--space-2xl);display:flex;flex-direction:column;gap:var(--space-md)}.shortcut-row{display:flex;gap:var(--space-sm);flex-wrap:wrap}.shortcut-chip{border:1px solid var(--border-primary);color:var(--text-secondary);background:var(--bg-chip);border-radius:999px;padding:.3rem .6rem;font-size:var(--font-size-xs)}kbd{font-family:var(--font-family-mono);border:1px solid var(--border-secondary);border-bottom-width:2px;border-radius:.35rem;padding:.1rem .35rem;color:var(--text-primary);background:var(--bg-tertiary)}.editor-wrapper{flex:1;min-height:0;border-radius:var(--radius-xl);overflow:hidden;border:1px solid var(--border-primary);box-shadow:var(--shadow-lg);transition:box-shadow var(--transition-normal),border-color var(--transition-normal)}.editor-wrapper:hover{box-shadow:var(--shadow-xl);border-color:var(--border-accent)}.editor{height:100%;width:100%}button{padding:.55rem .9rem;border:1px solid transparent;border-radius:var(--radius-md);cursor:pointer;font-weight:var(--font-weight-medium);font-size:var(--font-size-xs);transition:background-color var(--transition-normal),color var(--transition-normal),border-color var(--transition-normal),box-shadow var(--transition-normal)}button:disabled{opacity:.55;cursor:not-allowed}.button-content{position:relative;z-index:2}.btn-primary{background-color:var(--color-primary);color:var(--text-on-primary)}.btn-primary:hover:not(:disabled){background-color:var(--color-primary-hover);box-shadow:var(--shadow-md)}.btn-secondary{background-color:var(--color-secondary-action);color:var(--text-primary);border-color:var(--border-secondary)}.btn-secondary:hover:not(:disabled){background-color:var(--color-secondary-action-hover);border-color:var(--border-accent)}.btn-ghost{background-color:var(--bg-tertiary);color:var(--text-secondary);border-color:var(--border-primary)}.btn-ghost:hover:not(:disabled){background-color:var(--bg-surface);color:var(--text-primary);border-color:var(--border-accent)}.toast{position:fixed;bottom:var(--space-lg);right:var(--space-xl);padding:var(--space-sm) var(--space-lg);border-radius:var(--radius-lg);color:#fff;font-weight:var(--font-weight-medium);z-index:var(--z-toast);box-shadow:var(--shadow-lg);border:1px solid rgba(255,255,255,.18)}.toast.success{background-color:var(--color-success)}.toast.error{background-color:var(--color-error)}.fade-enter-active,.fade-leave-active{transition:opacity .3s ease,transform .3s ease}.fade-enter-from,.fade-leave-to{opacity:0;transform:translateY(20px)}@media (max-width: 1199px) and (min-width: 768px){.app-header{grid-template-columns:1fr;text-align:center;gap:var(--space-md)}.header-left,.header-buttons{justify-content:center}}@media (max-width: 767px){.app-header{grid-template-columns:1fr;padding:var(--space-md);gap:var(--space-md)}.header-left,.header-buttons{justify-content:center}button{width:auto}.editor-container{padding:var(--space-md);gap:var(--space-sm)}.shortcut-row{display:none}.editor-wrapper{min-height:52vh}.toast{top:var(--space-md);right:var(--space-md);left:var(--space-md);bottom:auto;text-align:center}}@media (max-width: 480px){.header-buttons{width:100%;justify-content:stretch;gap:.5rem}button{flex:1}}.github-link{color:var(--text-secondary);opacity:1;transition:color var(--transition-normal),border-color var(--transition-normal),background-color var(--transition-normal);display:flex;align-items:center;gap:.4rem;border:1px solid var(--border-primary);border-radius:999px;background:var(--bg-chip);padding:.4rem .75rem;font-size:var(--font-size-xs);font-weight:var(--font-weight-medium)}.github-link:hover{color:var(--text-primary);border-color:var(--border-accent);background:var(--bg-surface)}.github-link svg{width:18px;height:18px}@media (max-width: 767px){.github-link{margin-bottom:0}}.diff-btn{min-width:90px}.diff-btn.active{background-color:var(--color-primary);border-color:var(--color-primary-hover);color:var(--text-on-primary)}.theme-btn{padding:0;min-width:2.25rem;display:inline-flex;align-items:center;justify-content:center}.theme-icon{display:inline-flex;align-items:center;justify-content:center}.theme-icon svg{width:1.1rem;height:1.1rem}button:focus-visible,.github-link:focus-visible{outline:2px solid var(--border-accent);outline-offset:2px}:root{--color-primary: #22c55e;--color-primary-hover: #16a34a;--color-secondary: #64748b;--color-secondary-action: #1e293b;--color-secondary-action-hover: #334155;--color-success: #10b981;--color-warning: #f59e0b;--color-error: #ef4444;--color-info: #38bdf8;--bg-primary: #0f172a;--bg-secondary: rgba(15, 23, 42, .82);--bg-tertiary: #172136;--bg-surface: #1f2a44;--bg-chip: rgba(148, 163, 184, .12);--bg-accent-soft: rgba(56, 189, 248, .22);--bg-accent-soft-2: rgba(34, 197, 94, .15);--bg-overlay: rgba(0, 0, 0, .5);--text-primary: #e2e8f0;--text-secondary: #cbd5e1;--text-muted: #94a3b8;--text-inverse: #1f2937;--text-on-primary: #052e16;--border-primary: rgba(148, 163, 184, .26);--border-secondary: rgba(148, 163, 184, .42);--border-accent: #38bdf8;--space-xs: .25rem;--space-sm: .5rem;--space-md: .75rem;--space-lg: 1rem;--space-xl: 1.5rem;--space-2xl: 2rem;--space-3xl: 3rem;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 1.875rem;--font-size-4xl: 2.25rem;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--line-height-tight: 1.25;--line-height-normal: 1.5;--line-height-relaxed: 1.75;--radius-sm: .25rem;--radius-md: .375rem;--radius-lg: .5rem;--radius-xl: .75rem;--radius-2xl: 1rem;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .1);--shadow-xl: 0 20px 25px rgba(0, 0, 0, .1);--shadow-elevated: 0 10px 26px rgba(2, 6, 23, .28);--transition-fast: .15s ease;--transition-normal: .2s ease;--transition-slow: .3s ease;--transition-bounce: .3s cubic-bezier(.4, 0, .2, 1);--font-family-display: "Segoe UI", "Inter", "Helvetica Neue", Arial, sans-serif;--font-family-mono: "JetBrains Mono", "Cascadia Code", Consolas, "Courier New", monospace;--z-dropdown: 1000;--z-sticky: 1020;--z-fixed: 1030;--z-modal-backdrop: 1040;--z-modal: 1050;--z-popover: 1060;--z-tooltip: 1070;--z-toast: 9999}[data-theme=light]{--color-secondary-action: #f1f5f9;--color-secondary-action-hover: #e2e8f0;--bg-primary: #f8fafc;--bg-secondary: rgba(255, 255, 255, .88);--bg-tertiary: #f1f5f9;--bg-surface: #e2e8f0;--bg-chip: rgba(15, 23, 42, .05);--bg-accent-soft: rgba(14, 165, 233, .12);--bg-accent-soft-2: rgba(34, 197, 94, .1);--text-primary: #0f172a;--text-secondary: #334155;--text-muted: #475569;--text-inverse: #ffffff;--border-primary: rgba(15, 23, 42, .14);--border-secondary: rgba(15, 23, 42, .25);--border-accent: #0284c7;--shadow-elevated: 0 10px 24px rgba(15, 23, 42, .12)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;line-height:var(--line-height-normal);-webkit-text-size-adjust:100%;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family-display);background-color:var(--bg-primary);color:var(--text-primary);line-height:var(--line-height-normal);font-size:var(--font-size-base);font-weight:var(--font-weight-normal)}h1,h2,h3,h4,h5,h6{font-weight:var(--font-weight-semibold);line-height:var(--line-height-tight);color:var(--text-primary)}h1{font-size:var(--font-size-3xl);margin-bottom:var(--space-lg)}h2{font-size:var(--font-size-2xl);margin-bottom:var(--space-md)}h3{font-size:var(--font-size-xl);margin-bottom:var(--space-sm)}p{margin-bottom:var(--space-lg);color:var(--text-secondary)}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary-hover)}a:focus{outline:2px solid var(--color-primary);outline-offset:2px}button{font-family:inherit;font-size:inherit;line-height:inherit;cursor:pointer;border:none;background:none;color:inherit}button:focus{outline:2px solid var(--color-primary);outline-offset:2px}button:disabled{cursor:not-allowed;opacity:.6}input,textarea,select{font-family:inherit;font-size:inherit;line-height:inherit;color:inherit;background-color:transparent;border:1px solid var(--border-primary);border-radius:var(--radius-md);padding:var(--space-sm) var(--space-md);transition:border-color var(--transition-fast)}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #3b82f61a}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}.focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-tertiary)}::-webkit-scrollbar-thumb{background:var(--border-secondary);border-radius:var(--radius-sm)}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}::selection{background-color:#3b82f64d;color:var(--text-primary)}::-moz-selection{background-color:#3b82f64d;color:var(--text-primary)}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}@media (prefers-contrast: high){:root{--border-primary: currentColor;--border-secondary: currentColor}button,input,textarea,select{border:2px solid currentColor}}@media print{*,*:before,*:after{background:transparent!important;color:#000!important;box-shadow:none!important;text-shadow:none!important}a,a:visited{text-decoration:underline}a[href]:after{content:" (" attr(href) ")"}h2,h3{page-break-after:avoid}}