/**
 * WikiDocs — Modern UI Design System
 */
:root{--color-primary:#4CAF50;--color-primary-hover:#43A047;--color-primary-light:#E8F5E9;--color-primary-dark:#2E7D32;--color-primary-rgb:76,175,80;--surface-bg:#FFFFFF;--surface-sidebar:#FAFAFA;--surface-hover:#F0F0F0;--surface-active:#E8E8E8;--surface-card:#FFFFFF;--surface-input:#F5F5F5;--surface-code:#F4F4F4;--surface-modal-overlay:rgba(0,0,0,0.45);--text-primary:#1A1A1A;--text-secondary:#666666;--text-tertiary:#999999;--text-link:var(--color-primary);--text-link-hover:var(--color-primary-hover);--border-color:#E5E5E5;--border-light:#F0F0F0;--font-sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',system-ui,sans-serif;--font-mono:'JetBrains Mono','Fira Code','SF Mono',Consolas,'Courier New',monospace;--font-size-xs:0.75rem;--font-size-sm:0.875rem;--font-size-base:1rem;--font-size-lg:1.125rem;--font-size-xl:1.25rem;--spacing-xs:0.25rem;--spacing-sm:0.5rem;--spacing-md:1rem;--spacing-lg:1.5rem;--spacing-xl:2rem;--spacing-2xl:3rem;--sidebar-width:280px;--radius-sm:6px;--radius-md:8px;--radius-lg:12px;--radius-full:9999px;--shadow-sm:0 1px 2px rgba(0,0,0,.05);--shadow-md:0 4px 12px rgba(0,0,0,.08);--shadow-lg:0 8px 24px rgba(0,0,0,.12);--transition-fast:150ms ease;--transition-normal:250ms ease;--transition-slow:350ms cubic-bezier(.4,0,.2,1);--z-sidebar:40;--z-header:30;--z-modal:100;--z-toast:200;--z-tooltip:50}[data-theme="dark"]{--surface-bg:#1A1A1A;--surface-sidebar:#1E1E1E;--surface-hover:#2A2A2A;--surface-active:#333;--surface-card:#252525;--surface-input:#2A2A2A;--surface-code:#2D2D2D;--surface-modal-overlay:rgba(0,0,0,.7);--text-primary:#E5E5E5;--text-secondary:#AAA;--text-tertiary:#777;--border-color:#333;--border-light:#2A2A2A}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;scroll-behavior:smooth}body{font-family:var(--font-sans);font-size:var(--font-size-base);line-height:1.6;color:var(--text-primary);background:var(--surface-bg);min-height:100vh;transition:background var(--transition-normal),color var(--transition-normal)}.app-layout{display:flex;min-height:100vh}.sidebar{position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-width);background:var(--surface-sidebar);border-right:1px solid var(--border-color);display:flex;flex-direction:column;z-index:var(--z-sidebar);transition:transform var(--transition-slow);overflow:hidden}.sidebar.collapsed{transform:translateX(calc(var(--sidebar-width)*-1))}.sidebar-brand{padding:var(--spacing-xl) var(--spacing-lg);text-align:center;border-bottom:1px solid var(--border-light);flex-shrink:0}.sidebar-brand h1{font-size:var(--font-size-xl);font-weight:700;color:var(--color-primary);margin-bottom:var(--spacing-xs)}.sidebar-brand span{font-size:var(--font-size-sm);color:var(--text-tertiary)}.sidebar-search{padding:var(--spacing-md);flex-shrink:0}.sidebar-search .search-wrapper{position:relative}.sidebar-search input{width:100%;height:40px;padding:0 36px 0 var(--spacing-md);border:1px solid var(--border-color);border-radius:var(--radius-md);background:var(--surface-input);color:var(--text-primary);font-size:var(--font-size-sm);font-family:var(--font-sans);transition:all var(--transition-fast);outline:none}.sidebar-search input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px rgba(var(--color-primary-rgb),.15);background:var(--surface-bg)}.sidebar-search .search-icon{position:absolute;right:12px;top:50%;transform:translateY(-50%);color:var(--text-tertiary);pointer-events:none}.sidebar-nav{flex:1;overflow-y:auto;padding:var(--spacing-sm) 0;scrollbar-width:thin;scrollbar-color:var(--border-color) transparent}.sidebar-nav::-webkit-scrollbar{width:4px}.sidebar-nav::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:2px}.nav-item{display:flex;align-items:center;padding:0 var(--spacing-lg);height:40px;font-size:var(--font-size-sm);color:var(--text-secondary);text-decoration:none;transition:all var(--transition-fast);cursor:pointer;position:relative;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.nav-item:hover{background:var(--surface-hover);color:var(--text-primary)}.nav-item.active{background:var(--surface-active);color:var(--color-primary);font-weight:600}.nav-item.active::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:60%;background:var(--color-primary);border-radius:0 var(--radius-sm) var(--radius-sm) 0}.nav-sub{padding-left:var(--spacing-lg)}.nav-sub .nav-item{height:34px;padding-left:var(--spacing-2xl);font-size:var(--font-size-xs)}.nav-sub-sub .nav-item{height:30px;padding-left:calc(var(--spacing-2xl) + var(--spacing-lg));font-size:var(--font-size-xs)}.sidebar-footer{padding:var(--spacing-md) var(--spacing-lg);border-top:1px solid var(--border-color);flex-shrink:0;font-size:var(--font-size-xs);color:var(--text-tertiary);line-height:1.5}.sidebar-footer .footer-title{font-weight:600;color:var(--text-secondary);display:block}.main-content{flex:1;margin-left:var(--sidebar-width);min-height:100vh;display:flex;flex-direction:column;transition:margin-left var(--transition-slow)}.sidebar.collapsed~.main-content{margin-left:0}.topbar{display:flex;align-items:center;justify-content:space-between;height:56px;padding:0 var(--spacing-xl);background:var(--surface-bg);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:var(--z-header);gap:var(--spacing-md)}.topbar-left{display:flex;align-items:center;gap:var(--spacing-md);min-width:0}.topbar-right{display:flex;align-items:center;gap:var(--spacing-sm);flex-shrink:1;flex-wrap:wrap;justify-content:flex-end;overflow:visible}.breadcrumb{display:flex;align-items:center;gap:var(--spacing-sm);font-size:var(--font-size-sm);color:var(--text-tertiary);min-width:0;overflow:hidden}.breadcrumb a{color:var(--text-secondary);text-decoration:none;white-space:nowrap;transition:color var(--transition-fast)}.breadcrumb a:hover{color:var(--color-primary)}.breadcrumb .current{color:var(--text-primary);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:8px 16px;font-size:var(--font-size-sm);font-weight:500;font-family:var(--font-sans);border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);text-decoration:none;line-height:1.4;white-space:nowrap}.btn:active{transform:scale(.97)}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-hover)}.btn-secondary{background:var(--surface-hover);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{background:var(--surface-active)}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover{background:var(--surface-hover);color:var(--text-primary)}.btn-danger{background:#EF4444;color:#fff}.btn-danger:hover{background:#DC2626}.btn-warning{background:#F59E0B;color:#fff}.btn-warning:hover{background:#D97706}.btn-success{background:#10B981;color:#fff}.btn-success:hover{background:#059669}.btn-icon{width:36px;height:36px;padding:0;border-radius:var(--radius-full);background:transparent;color:var(--text-secondary);border:none;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.btn-icon:hover{background:var(--surface-hover);color:var(--text-primary)}.btn-sm{padding:4px 10px;font-size:var(--font-size-xs);height:30px}#topbar-actions .btn .btn-label{display:none}#topbar-actions .btn-sm{padding:4px 8px;min-width:30px;height:30px}#topbar-actions .btn-sm .svg-icon-sm{margin:0}#topbar-actions .btn-primary{background:transparent;color:var(--color-primary)}#topbar-actions .btn-primary:hover{background:var(--color-primary-light);color:var(--color-primary)}#topbar-actions .btn-danger{background:transparent;color:#EF4444}#topbar-actions .btn-danger:hover{background:#FEE2E2;color:#EF4444}#topbar-actions .btn-warning{background:transparent;color:#F59E0B}#topbar-actions .btn-warning:hover{background:#FEF3C7;color:#F59E0B}#topbar-actions .btn-success{background:transparent;color:#10B981}#topbar-actions .btn-success:hover{background:#D1FAE5;color:#10B981}#topbar-actions .btn-ghost{background:transparent;color:var(--text-secondary)}#topbar-actions .btn-ghost:hover{background:var(--surface-hover);color:var(--text-primary)}#topbar-actions .btn-secondary{background:transparent;color:var(--text-secondary);border:1px solid var(--border-color)}#topbar-actions .btn-secondary:hover{background:var(--surface-hover);color:var(--text-primary)}.content-container{max-width:820px;width:100%;margin:0 auto;padding:var(--spacing-2xl) var(--spacing-xl)}h1,h2,h3,h4,h5,h6{color:var(--text-primary);font-weight:700;line-height:1.3;scroll-margin-top:80px}h1{font-size:2rem;margin:var(--spacing-2xl) 0 var(--spacing-md)}h2{font-size:1.625rem;margin:var(--spacing-xl) 0 var(--spacing-md);padding-bottom:var(--spacing-sm);border-bottom:1px solid var(--border-light)}h3{font-size:1.375rem;margin:var(--spacing-lg) 0 var(--spacing-sm)}p{margin:var(--spacing-md) 0;word-wrap:break-word}a{color:var(--text-link);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--text-link-hover);text-decoration:underline}article ul,article ol{padding-left:1.5rem;margin:var(--spacing-md) 0}table{width:100%;border-collapse:collapse;margin:var(--spacing-lg) 0;font-size:var(--font-size-sm);border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--border-color)}th{background:var(--surface-sidebar);font-weight:600;padding:10px 14px;text-align:left;border-bottom:2px solid var(--border-color)}td{padding:10px 14px;border-bottom:1px solid var(--border-light)}tr:hover td{background:var(--surface-hover)}code{font-family:var(--font-mono);font-size:.875em;background:var(--surface-code);padding:2px 6px;border-radius:4px;border:1px solid var(--border-light)}pre{font-family:var(--font-mono);font-size:var(--font-size-sm);line-height:1.6;background:var(--surface-code);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:var(--spacing-md);margin:var(--spacing-lg) 0;overflow-x:auto}pre code{background:none;padding:0;border:none}.code-container{position:relative;margin:var(--spacing-lg) 0}.code-container .copy-btn{position:absolute;top:8px;right:8px;padding:4px 10px;font-size:var(--font-size-xs);background:var(--color-primary);color:#fff;border:none;border-radius:var(--radius-sm);cursor:pointer;opacity:0;transition:opacity var(--transition-fast);z-index:5}.code-container:hover .copy-btn{opacity:1}img{max-width:100%;height:auto;border-radius:var(--radius-md)}blockquote{margin:var(--spacing-lg) 0;padding:var(--spacing-md) var(--spacing-lg);border-left:4px solid var(--color-primary);background:var(--color-primary-light);border-radius:0 var(--radius-md) var(--radius-md) 0}[data-theme="dark"] blockquote{background:rgba(var(--color-primary-rgb),.1)}hr{border:none;border-top:1px solid var(--border-color);margin:var(--spacing-2xl) 0}.form-group{margin-bottom:var(--spacing-lg)}.form-label{display:block;font-size:var(--font-size-sm);font-weight:500;margin-bottom:var(--spacing-xs)}.form-input{width:100%;height:42px;padding:0 var(--spacing-md);border:1px solid var(--border-color);border-radius:var(--radius-md);background:var(--surface-bg);color:var(--text-primary);font-size:var(--font-size-base);font-family:var(--font-sans);transition:all var(--transition-fast);outline:none}.form-input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px rgba(var(--color-primary-rgb),.15)}select.form-input{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M6 8L1 3h10z' fill='%23999'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:36px}.auth-form{display:flex;align-items:center;justify-content:center;min-height:50vh}.auth-form form{width:100%;max-width:420px;padding:var(--spacing-2xl);background:var(--surface-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.modal-overlay{position:fixed;inset:0;background:var(--surface-modal-overlay);display:flex;align-items:center;justify-content:center;z-index:var(--z-modal);opacity:0;visibility:hidden;transition:all var(--transition-normal);backdrop-filter:blur(4px)}.modal-overlay.active{opacity:1;visibility:visible}.modal{background:var(--surface-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);width:90%;max-width:600px;max-height:85vh;display:flex;flex-direction:column;transform:scale(.95) translateY(10px);transition:transform var(--transition-normal)}.modal-overlay.active .modal{transform:scale(1) translateY(0)}.modal-header{padding:var(--spacing-lg) var(--spacing-xl);border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between}.modal-body{padding:var(--spacing-xl);overflow-y:auto;flex:1}.modal-footer{padding:var(--spacing-md) var(--spacing-xl);border-top:1px solid var(--border-color);display:flex;justify-content:flex-end;gap:var(--spacing-sm)}.toast-container{position:fixed;bottom:24px;right:24px;z-index:var(--z-toast);display:flex;flex-direction:column;gap:var(--spacing-sm);pointer-events:none}.toast{padding:12px 20px;border-radius:var(--radius-md);color:#fff;font-size:var(--font-size-sm);font-weight:500;box-shadow:var(--shadow-lg);pointer-events:auto;animation:toastIn .3s ease,toastOut .3s ease 3.5s forwards;max-width:380px;display:flex;align-items:center;gap:var(--spacing-sm)}.toast-success{background:#10B981}.toast-warning{background:#F59E0B;color:#1A1A1A}.toast-danger{background:#EF4444}.toast-info{background:#3B82F6}@keyframes toastIn{from{opacity:0;transform:translateY(20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes toastOut{from{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(-10px) scale(.95)}}[data-tooltip]{position:relative}[data-tooltip]::after{content:attr(data-tooltip);position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%);padding:4px 10px;background:var(--text-primary);color:var(--surface-bg);font-size:var(--font-size-xs);font-weight:500;white-space:nowrap;border-radius:var(--radius-sm);opacity:0;visibility:hidden;transition:all var(--transition-fast);pointer-events:none;z-index:var(--z-tooltip)}[data-tooltip]:hover::after{opacity:1;visibility:visible}.search-results h1{margin-bottom:var(--spacing-xl)}.search-result{padding:var(--spacing-lg) 0;border-bottom:1px solid var(--border-light)}.search-result h3 a{color:var(--color-primary)}[data-theme="dark"] .EasyMDEContainer .CodeMirror{background:var(--surface-input)!important;color:var(--text-primary)!important;border-color:var(--border-color)!important}[data-theme="dark"] .editor-toolbar{background:var(--surface-sidebar)!important;border-color:var(--border-color)!important}[data-theme="dark"] .editor-toolbar button{color:var(--text-secondary)!important}[data-theme="dark"] .editor-toolbar button:hover{background:var(--surface-hover)!important;color:var(--text-primary)!important}[data-theme="dark"] .editor-preview{background:var(--surface-bg)!important;color:var(--text-primary)!important}article{word-wrap:break-word}.content-footer{margin-top:var(--spacing-2xl);padding-top:var(--spacing-lg);border-top:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center;font-size:var(--font-size-xs);color:var(--text-tertiary);flex-wrap:wrap;gap:var(--spacing-sm)}.back-to-top{position:fixed;bottom:24px;right:24px;width:40px;height:40px;border-radius:var(--radius-full);background:var(--color-primary);color:#fff;border:none;cursor:pointer;display:none;align-items:center;justify-content:center;box-shadow:var(--shadow-md);z-index:35;transition:all var(--transition-fast)}.back-to-top:hover{background:var(--color-primary-hover);transform:translateY(-2px)}.back-to-top.visible{display:flex}.mobile-menu-btn{display:flex;width:36px;height:36px;border-radius:var(--radius-full);background:transparent;border:none;cursor:pointer;align-items:center;justify-content:center;color:var(--text-primary);transition:all var(--transition-fast)}.mobile-menu-btn:hover{background:var(--surface-hover)}.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.3);z-index:calc(var(--z-sidebar) - 1);opacity:0;transition:opacity var(--transition-normal)}.sidebar-overlay.active{opacity:1}.image-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:var(--spacing-md)}.image-grid-item img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:var(--radius-md);cursor:pointer;transition:transform var(--transition-fast)}.image-grid-item img:hover{transform:scale(1.05)}.image-grid-item .delete-link{color:#EF4444;cursor:pointer;font-size:var(--font-size-xs)}@media(max-width:1024px){.sidebar{transform:translateX(calc(var(--sidebar-width)*-1));box-shadow:var(--shadow-lg)}.sidebar.mobile-open{transform:translateX(0)}.sidebar-overlay.active{display:block;pointer-events:auto}.main-content{margin-left:0!important}.content-container{padding:var(--spacing-lg) var(--spacing-md)}}@media(max-width:640px){.topbar{position:relative;padding:0 var(--spacing-sm);gap:4px}.topbar-right{gap:2px;overflow:visible}.content-container{padding:var(--spacing-md)}h1{font-size:1.5rem}h2{font-size:1.25rem}.content-footer{flex-direction:column;align-items:flex-start}.toast-container{left:16px;right:16px;bottom:16px}.toast{max-width:100%}}.settings-page{max-width:720px;margin:0 auto;padding:var(--spacing-2xl)}.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-md)}.settings-grid .full-width{grid-column:1/-1}.settings-actions{display:flex;justify-content:space-between;margin-top:var(--spacing-2xl);padding-top:var(--spacing-lg);border-top:1px solid var(--border-color)}@media(max-width:640px){.settings-page{padding:var(--spacing-md)}.settings-grid{grid-template-columns:1fr}}.attachment-list{list-style:none;padding:0}.attachment-list li{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;border-radius:var(--radius-sm)}.version-list{list-style:none;padding:0}.version-list li{padding:8px 0}.debug-panel{margin-top:var(--spacing-2xl);padding:var(--spacing-md);background:var(--surface-code);border:1px solid var(--border-color);border-radius:var(--radius-md);font-size:var(--font-size-xs);font-family:var(--font-mono);overflow-x:auto}.svg-icon{width:1.25em;height:1.25em;display:inline-block;vertical-align:-0.25em;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}.svg-icon-sm{width:1em;height:1em}.svg-icon-lg{width:1.5em;height:1.5em}.svg-icon-xl{width:2em;height:2em}.svg-sprite{display:none}.theme-toggle{position:relative;width:36px;height:36px;border-radius:var(--radius-full);border:none;background:transparent;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--text-secondary);transition:all var(--transition-fast)}.theme-toggle:hover{background:var(--surface-hover);color:var(--text-primary)}.theme-toggle .icon-sun,.theme-toggle .icon-moon{position:absolute;transition:all .4s cubic-bezier(.4,0,.2,1)}.theme-toggle .icon-sun{opacity:1;transform:rotate(0) scale(1)}.theme-toggle .icon-moon{opacity:0;transform:rotate(-90deg) scale(.5)}[data-theme="dark"] .theme-toggle .icon-sun{opacity:0;transform:rotate(90deg) scale(.5)}[data-theme="dark"] .theme-toggle .icon-moon{opacity:1;transform:rotate(0) scale(1)}.lang-switcher{position:relative}.lang-switcher-btn{width:36px;height:36px;border-radius:var(--radius-full);border:none;background:transparent;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--text-secondary);transition:all var(--transition-fast);font-size:var(--font-size-xs);font-weight:600;font-family:var(--font-sans);text-transform:uppercase}.lang-switcher-btn:hover{background:var(--surface-hover);color:var(--text-primary)}.lang-switcher-dropdown{position:absolute;top:calc(100% + 8px);right:0;min-width:140px;background:var(--surface-card);border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transform:translateY(-8px);transition:all var(--transition-fast);z-index:var(--z-tooltip);padding:4px}.lang-switcher-dropdown.active{opacity:1;visibility:visible;transform:translateY(0)}.lang-switcher-dropdown a{display:flex;align-items:center;gap:8px;padding:8px 12px;font-size:var(--font-size-sm);color:var(--text-primary);text-decoration:none;border-radius:var(--radius-sm);transition:background var(--transition-fast)}.lang-switcher-dropdown a:hover{background:var(--surface-hover);text-decoration:none}.lang-switcher-dropdown a.active{background:var(--color-primary-light);color:var(--color-primary);font-weight:600}[data-theme="dark"] .lang-switcher-dropdown a.active{background:rgba(var(--color-primary-rgb),.15)}[data-theme="dark"] #topbar-actions .btn-primary:hover{background:rgba(var(--color-primary-rgb),.15)}[data-theme="dark"] #topbar-actions .btn-danger:hover{background:rgba(239,68,68,.15)}[data-theme="dark"] #topbar-actions .btn-warning:hover{background:rgba(245,158,11,.15)}[data-theme="dark"] #topbar-actions .btn-success:hover{background:rgba(16,185,129,.15)}.lang-switcher-dropdown .lang-code{font-size:var(--font-size-xs);color:var(--text-tertiary);text-transform:uppercase;width:24px;text-align:center;flex-shrink:0}