@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap";.search-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0009;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);display:flex;align-items:flex-start;justify-content:center;padding-top:15vh;z-index:1000;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.search-container{background:var(--bg-card);backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);border:1px solid var(--border-color);border-radius:var(--border-radius-xl);box-shadow:var(--shadow-lg);width:90%;max-width:650px;max-height:75vh;overflow:hidden;display:flex;flex-direction:column;animation:slideDown .3s var(--easing-apple)}@keyframes slideDown{0%{opacity:0;transform:translateY(-20px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}.search-form{padding:var(--spacing-lg);border-bottom:1px solid var(--border-color)}.search-input-wrapper{display:flex;align-items:center;background:var(--bg-elevated);border:1px solid var(--border-color);border-radius:var(--border-radius-pill);padding:.625rem 1.125rem;margin-bottom:var(--spacing-md);transition:var(--transition-fast)}.search-input-wrapper:focus-within{background:var(--bg-secondary)}.search-icon{font-size:1.125rem;margin-right:.75rem;color:var(--text-secondary);line-height:1}.search-input{flex:1;border:none;outline:none;font-size:.9375rem;color:var(--text-primary);background:transparent;font-family:inherit;font-weight:500;letter-spacing:-.01em}.search-input:focus{outline:none;border:none;box-shadow:none}.search-input::placeholder{color:var(--text-secondary)}.clear-btn{background:none;border:none;color:var(--text-secondary);cursor:pointer;font-size:1.125rem;padding:.25rem;border-radius:50%;transition:var(--transition-fast);line-height:1;display:flex;align-items:center;justify-content:center}.clear-btn:hover{color:var(--text-primary);background:var(--bg-hover)}.search-filters{display:flex;gap:var(--spacing-xs);background:var(--bg-elevated);padding:.375rem;border-radius:var(--border-radius-xl);border:1px solid var(--border-color)}.difficulty-filter{flex:1;padding:.625rem 1.125rem;background:transparent;border:none;border-radius:var(--border-radius-pill);color:var(--text-secondary);font-size:.9375rem;font-family:inherit;font-weight:500;cursor:pointer;outline:none;transition:var(--transition-fast);letter-spacing:-.01em}.difficulty-filter:hover{color:var(--text-primary);background:#ffffff0d}.difficulty-filter:focus{color:var(--text-primary);background:var(--bg-secondary);box-shadow:none;outline:none}.difficulty-filter option{background:var(--bg-elevated);color:var(--text-primary)}.search-btn{padding:.625rem 1.125rem;background:var(--bg-secondary);color:var(--text-primary);border:none;border-radius:var(--border-radius-pill);font-weight:600;font-size:.9375rem;font-family:inherit;cursor:pointer;transition:var(--transition-fast);letter-spacing:-.01em;box-shadow:0 2px 8px #0000004d}.search-btn:hover:not(:disabled){background:var(--bg-hover);transform:scale(1.02)}.search-btn:active:not(:disabled){transform:scale(.98)}.search-btn:disabled{opacity:.5;cursor:not-allowed}.suggestions-list{max-height:280px;overflow-y:auto}.suggestion-item{display:flex;align-items:center;gap:.75rem;padding:.75rem var(--spacing-lg);cursor:pointer;transition:var(--transition-fast)}.suggestion-item:hover{background:var(--bg-hover)}.suggestion-icon{font-size:1.125rem;line-height:1;color:var(--text-secondary)}.suggestion-text{flex:1;color:var(--text-primary);font-weight:500;font-size:.9375rem;letter-spacing:-.01em}.suggestion-type{color:var(--text-secondary);font-size:.75rem;text-transform:uppercase;font-weight:600;letter-spacing:.05em;padding:.25rem .625rem;background:var(--bg-elevated);border-radius:var(--border-radius-pill)}.search-results{flex:1;overflow-y:auto;padding:var(--spacing-lg)}.results-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-lg)}.results-header h3{color:var(--text-primary);font-size:1.25rem;font-weight:700;letter-spacing:-.02em}.close-results{background:var(--bg-elevated);border:1px solid var(--border-color);font-size:1.25rem;color:var(--text-secondary);cursor:pointer;padding:.5rem;border-radius:50%;transition:var(--transition-fast);width:40px;height:40px;display:flex;align-items:center;justify-content:center;line-height:1}.close-results:hover{background:var(--bg-hover);color:var(--text-primary);transform:scale(1.05)}.no-results{text-align:center;padding:3rem 1rem;color:var(--text-secondary)}.no-results p:first-child{font-size:1.125rem;font-weight:600;margin-bottom:.5rem;color:var(--text-primary)}.no-results-hint{font-size:.95rem;color:var(--text-tertiary)}.result-section{margin-bottom:var(--spacing-xl)}.result-section:last-child{margin-bottom:0}.result-section-title{color:var(--text-secondary);font-size:.75rem;font-weight:600;margin-bottom:var(--spacing-md);text-transform:uppercase;letter-spacing:.05em}.result-item{display:flex;gap:1rem;padding:.75rem 1rem;border-radius:var(--border-radius);cursor:pointer;transition:var(--transition-fast);margin-bottom:var(--spacing-xs);border:1px solid transparent}.result-item:hover{background:var(--bg-hover);border-color:var(--border-color)}.result-icon{font-size:1.125rem;flex-shrink:0;line-height:1;color:var(--text-secondary)}.result-content{flex:1;min-width:0}.result-header{display:flex;justify-content:space-between;align-items:flex-start;gap:.5rem;margin-bottom:.25rem}.result-content h5{color:var(--text-primary);font-size:.9375rem;font-weight:600;margin:0;letter-spacing:-.01em}.result-meta{color:var(--text-tertiary);font-size:.8125rem;margin-bottom:.25rem;font-weight:500}.result-content p{color:var(--text-secondary);font-size:.875rem;margin:0;line-height:1.5;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;line-clamp:2;-webkit-line-clamp:2;-webkit-box-orient:vertical}.difficulty-badge{padding:.3rem .75rem;border-radius:20px;font-size:.6875rem;font-weight:700;text-transform:capitalize;letter-spacing:.03em;white-space:nowrap}.difficulty-badge.beginner{background:#30d15826;color:#30d158}.difficulty-badge.intermediate{background:#ff9f0a26;color:#ff9f0a}.difficulty-badge.advanced{background:#ff453a26;color:#ff453a}.search-results::-webkit-scrollbar,.suggestions-list::-webkit-scrollbar{width:6px}.search-results::-webkit-scrollbar-track,.suggestions-list::-webkit-scrollbar-track{background:transparent}.search-results::-webkit-scrollbar-thumb,.suggestions-list::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:10px}.search-results::-webkit-scrollbar-thumb:hover,.suggestions-list::-webkit-scrollbar-thumb:hover{background:#fff3}@media(max-width:768px){.search-overlay{padding-top:10vh}.search-container{width:95%;max-height:85vh}.search-form{padding:var(--spacing-md)}.search-filters{flex-direction:column}.search-btn{width:100%}.result-item{padding:.625rem .75rem}}.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;padding:var(--spacing-md) 0;background:var(--bg-card);backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);border-bottom:1px solid var(--border-color)}.navbar-container{max-width:1400px;margin:0 auto;padding:0 var(--spacing-xl);display:flex;align-items:center;justify-content:space-between}.navbar-brand{display:flex;align-items:center;gap:.75rem;text-decoration:none;color:var(--text-primary);font-size:1.25rem;font-weight:700;letter-spacing:-.02em;transition:var(--transition-fast)}.navbar-brand:hover{transform:scale(1.02)}.brand-icon{font-size:1.75rem;line-height:1}.brand-text{background:linear-gradient(135deg,var(--text-primary) 0%,var(--text-secondary) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.navbar-links{display:flex;align-items:center;gap:var(--spacing-xs);background:var(--bg-elevated);padding:.375rem;border-radius:var(--border-radius-xl);border:1px solid var(--border-color)}.nav-link{display:flex;align-items:center;gap:.5rem;padding:.625rem 1.125rem;text-decoration:none;color:var(--text-secondary);font-size:.9375rem;font-weight:500;border-radius:var(--border-radius-pill);transition:var(--transition-fast);position:relative;letter-spacing:-.01em}.nav-link:hover{color:var(--text-primary);background:#ffffff0d}.nav-link.active{color:var(--text-primary);background:var(--bg-secondary);box-shadow:0 2px 8px #0000004d}.nav-icon{font-size:1.125rem;line-height:1}.nav-link.active:before{content:"";position:absolute;top:-1px;right:-1px;bottom:-1px;left:-1px;border-radius:var(--border-radius-pill);padding:1px;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:.5}@media(max-width:768px){.navbar{padding:var(--spacing-sm) 0}.navbar-container{padding:0 var(--spacing-md)}.navbar-links{gap:.25rem;padding:.25rem}.nav-link{padding:.5rem .75rem;font-size:.875rem}.nav-link span:not(.nav-icon){display:none}.brand-text{font-size:1.125rem}}@media(max-width:480px){.brand-text{display:none}}.theme-toggle-btn{background:var(--bg-elevated);border:1px solid var(--border-color);cursor:pointer;font-size:1.25rem;width:40px;height:40px;border-radius:50%;transition:var(--transition-fast);display:flex;align-items:center;justify-content:center;margin-left:.5rem;color:var(--text-primary)}.theme-toggle-btn:hover{background:var(--bg-hover);transform:scale(1.05)}.search-trigger-btn{background:var(--bg-elevated);border:1px solid var(--border-color);cursor:pointer;font-size:1.25rem;width:40px;height:40px;border-radius:50%;transition:var(--transition-fast);display:flex;align-items:center;justify-content:center;color:var(--text-primary)}.search-trigger-btn:hover{background:var(--bg-hover);transform:scale(1.05)}.error-boundary{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);padding:2rem}.error-boundary-content{background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:20px;padding:3rem;max-width:600px;width:100%;text-align:center;box-shadow:0 20px 60px #0000004d}.error-icon{font-size:4rem;margin-bottom:1rem;animation:shake .5s ease-in-out}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-10px)}75%{transform:translate(10px)}}.error-boundary-content h1{color:#2d3748;font-size:2rem;margin-bottom:1rem}.error-message{color:#4a5568;font-size:1.1rem;margin-bottom:2rem;line-height:1.6}.error-details{background:#f7fafc;border:1px solid #e2e8f0;border-radius:8px;padding:1rem;margin:1.5rem 0;text-align:left}.error-details summary{cursor:pointer;font-weight:600;color:#4a5568;margin-bottom:.5rem}.error-stack{background:#2d3748;color:#f7fafc;padding:1rem;border-radius:4px;overflow-x:auto;font-size:.875rem;margin-top:.5rem}.error-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.error-actions button{padding:.75rem 2rem;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease}.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 20px #667eea66}.btn-secondary{background:#e2e8f0;color:#2d3748}.btn-secondary:hover{background:#cbd5e0;transform:translateY(-2px)}@media(max-width:640px){.error-boundary-content{padding:2rem 1.5rem}.error-boundary-content h1{font-size:1.5rem}.error-actions{flex-direction:column}.error-actions button{width:100%}}*{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary: #09090b;--bg-secondary: #18181b;--bg-tertiary: #27272a;--bg-elevated: #1c1c1e;--bg-card: rgba(24, 24, 27, .8);--bg-hover: rgba(39, 39, 42, .8);--text-primary: #ededef;--text-secondary: #a1a1a6;--text-tertiary: #6e6e73;--primary: #0a84ff;--primary-hover: #409cff;--secondary: #5e5ce6;--success: #30d158;--warning: #ff9f0a;--error: #ff453a;--border-color: rgba(255, 255, 255, .08);--border-hover: rgba(255, 255, 255, .15);--border-radius-sm: 8px;--border-radius: 12px;--border-radius-lg: 20px;--border-radius-xl: 24px;--border-radius-pill: 9999px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .5);--shadow-md: 0 4px 12px rgba(0, 0, 0, .6);--shadow-lg: 0 12px 24px rgba(0, 0, 0, .7);--shadow-glow: 0 0 20px rgba(10, 132, 255, .4);--shadow-glow-hover: 0 0 30px rgba(10, 132, 255, .6);--spacing-xs: .5rem;--spacing-sm: .75rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--transition-fast: all .2s cubic-bezier(.25, .1, .25, 1);--transition: all .3s cubic-bezier(.25, .1, .25, 1);--transition-slow: all .5s cubic-bezier(.25, .1, .25, 1);--easing-apple: cubic-bezier(.25, .1, .25, 1)}:root[data-theme=light]{--bg-primary: #ffffff;--bg-secondary: #f5f5f7;--bg-tertiary: #e5e5ea;--bg-elevated: #ffffff;--bg-card: rgba(255, 255, 255, .8);--bg-hover: rgba(0, 0, 0, .05);--text-primary: #1d1d1f;--text-secondary: #86868b;--text-tertiary: #6e6e73;--border-color: rgba(0, 0, 0, .1);--border-hover: rgba(0, 0, 0, .2);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .1);--shadow-md: 0 4px 12px rgba(0, 0, 0, .1);--shadow-lg: 0 12px 24px rgba(0, 0, 0, .15);--shadow-glow: 0 0 20px rgba(10, 132, 255, .2);--shadow-glow-hover: 0 0 30px rgba(10, 132, 255, .4)}body{font-family:Inter,-apple-system,BlinkMacSystemFont,SF Pro Display,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;overflow-x:hidden;letter-spacing:-.01em}code{font-family:SF Mono,Fira Code,JetBrains Mono,monospace;background:#ffffff14;padding:.2em .4em;border-radius:6px;font-size:.85em;color:#ff79c6;border:1px solid transparent}pre{background:#1e1e1e!important;padding:var(--spacing-md);border-radius:var(--border-radius);overflow-x:auto;margin:var(--spacing-md) 0;border:1px solid var(--border-color);box-shadow:inset 0 2px 4px #0003}pre code{color:#abb2bf!important;background:transparent!important;padding:0!important;border:none!important;font-family:SF Mono,Fira Code,Courier New,monospace!important;font-size:.9em;line-height:1.6}.hljs-comment,.hljs-quote{color:#5c6370!important;font-style:italic}.hljs-doctag,.hljs-keyword,.hljs-formula{color:#c678dd!important}.hljs-section,.hljs-name,.hljs-selector-tag,.hljs-deletion,.hljs-subst{color:#e06c75!important}.hljs-literal{color:#56b6c2!important}.hljs-string,.hljs-regexp,.hljs-addition,.hljs-attribute,.hljs-meta-string{color:#98c379!important}.hljs-built_in,.hljs-class .hljs-title{color:#e6c07b!important}.hljs-attr,.hljs-variable,.hljs-template-variable,.hljs-type,.hljs-selector-class,.hljs-selector-attr,.hljs-selector-pseudo,.hljs-number{color:#d19a66!important}.hljs-symbol,.hljs-bullet,.hljs-link,.hljs-meta,.hljs-selector-id,.hljs-title,.hljs-function .hljs-title{color:#61afef!important}.hljs-tag{color:#abb2bf!important}.hljs-emphasis{font-style:italic}.hljs-strong{font-weight:700}.hljs-link{text-decoration:underline}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:10px}::-webkit-scrollbar-thumb:hover{background:#fff3}.glass{background:var(--bg-card);backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);border:1px solid var(--border-color);border-radius:var(--border-radius);transition:var(--transition)}.glass:hover{border-color:var(--border-hover)}.btn{padding:.875rem 1.75rem;border:none;border-radius:var(--border-radius-pill);font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s cubic-bezier(.25,.1,.25,1);display:inline-flex;align-items:center;justify-content:center;gap:.5rem;position:relative;overflow:hidden;letter-spacing:-.01em}.btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s ease}.btn:hover:before{left:100%}.btn-primary{background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);color:#fff;box-shadow:0 4px 16px #0a84ff66}.btn-primary:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 8px 24px #0a84ff80,0 0 0 1px #fff3 inset}.btn-primary:active{transform:translateY(-1px) scale(1)}.btn-secondary{background:var(--bg-elevated);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{background:var(--bg-hover);border-color:var(--border-hover);transform:translateY(-3px) scale(1.02);box-shadow:0 8px 20px #0000004d}.btn-secondary:active{transform:translateY(-1px) scale(1)}.card{background:var(--bg-card);backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);border:1px solid var(--border-color);border-radius:var(--border-radius-lg);padding:var(--spacing-lg);transition:var(--transition);position:relative;overflow:hidden}.card:before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.1),transparent)}.card:hover{transform:translateY(-4px) scale(1.01);border-color:var(--border-hover);box-shadow:var(--shadow-lg)}.loading{display:inline-block;width:24px;height:24px;border:3px solid rgba(255,255,255,.1);border-radius:50%;border-top-color:var(--primary);animation:spin .8s cubic-bezier(.25,.1,.25,1) infinite}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .8s cubic-bezier(.25,.1,.25,1) both}.fade-in:nth-child(1){animation-delay:.1s}.fade-in:nth-child(2){animation-delay:.2s}.fade-in:nth-child(3){animation-delay:.3s}.fade-in:nth-child(4){animation-delay:.4s}.fade-in:nth-child(5){animation-delay:.5s}.fade-in:nth-child(6){animation-delay:.6s}@keyframes scaleIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}.scale-in{animation:scaleIn .5s cubic-bezier(.25,.1,.25,1) both}@keyframes slideInLeft{0%{opacity:0;transform:translate(-30px)}to{opacity:1;transform:translate(0)}}.slide-in-left{animation:slideInLeft .6s cubic-bezier(.25,.1,.25,1) both}.container{max-width:1400px;margin:0 auto;padding:0 var(--spacing-lg)}@media(min-width:768px){.container{padding:0 var(--spacing-xl)}}::selection{background:var(--primary);color:#fff}::-moz-selection{background:var(--primary);color:#fff}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--primary);outline-offset:2px}@media(max-width:768px){body{font-size:15px}.btn{padding:.75rem 1.5rem;font-size:.95rem}}.page-enter{opacity:0;transform:translateY(20px)}.page-enter-active{opacity:1;transform:translateY(0);transition:var(--transition-slow)}.page-exit{opacity:1}.page-exit-active{opacity:0;transition:var(--transition-fast)}