:root{--snow-white:#fafbfc;--primary-teal:#14b8a6;--primary-green:#10b981;--teal-light:#ccfbf1;--slate:#1e293b;--mist:#64748b;--powder:#f1f5f9;--frost:#cbd5e1;--green-light:#d1fae5;--teal-dark:#0d9488;--primary:var(--primary-teal);--primary-dark:var(--teal-dark);--primary-light:var(--teal-light);--text:var(--slate);--text-light:var(--mist);--bg:var(--snow-white);--bg-gray:var(--powder);--border:var(--frost);--sidebar-bg:var(--snow-white);--sidebar-width:260px;--success:#10b981;--success-light:#d1fae5;--success-dark:#059669;--warning:#f59e0b;--warning-light:#fef3c7;--warning-dark:#d97706;--error:#ef4444;--error-light:#fee2e2;--error-dark:#dc2626;--info:#0ea5e9;--info-light:#e0f2fe;--info-dark:#0284c7;--gradient-primary:linear-gradient(135deg, #14b8a6 0%, #10b981 100%);--gradient-header:linear-gradient(180deg, #14b8a605 0%, transparent 100%);--gradient-success:linear-gradient(135deg, #059669 0%, #047857 100%);--gradient-error:linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);--gradient-info:linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);--shadow-sm:0 1px 2px 0 #1e293b0a;--shadow:0 1px 3px 0 #1e293b14;--shadow-md:0 2px 6px -1px #1e293b1a;--shadow-lg:0 8px 16px -4px #1e293b1f;--shadow-xl:0 16px 32px -8px #1e293b24;--shadow-2xl:0 24px 48px -12px #1e293b2e;--shadow-primary:0 4px 16px -2px #14b8a633;--z-base:0;--z-dropdown:1000;--z-sticky:1020;--z-modal:1050;--z-toast:1100;--ease-out-expo:cubic-bezier(.19, 1, .22, 1);--ease-in-out-cubic:cubic-bezier(.65, 0, .35, 1);--sans:-apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Helvetica Neue", sans-serif;--serif:ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;--mono:ui-monospace, "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", monospace;font-family:var(--sans);color:var(--text);background:var(--bg);font-size:16px;line-height:1.7}:root.dark-theme{--snow-white:#0f172a;--primary-teal:#2dd4bf;--primary-green:#34d399;--teal-light:#134e4a;--green-light:#064e3b;--slate:#e2e8f0;--mist:#94a3b8;--powder:#1e293b;--frost:#334155;--bg:#0f172a;--bg-gray:#1e293b;--sidebar-bg:#0a0f1e;--gradient-header:linear-gradient(180deg, #2dd4bf0a 0%, transparent 100%);--shadow-sm:0 1px 2px 0 #0009;--shadow:0 1px 3px 0 #00000080;--shadow-md:0 2px 6px -1px #00000080;--shadow-lg:0 8px 16px -4px #0009;--shadow-xl:0 16px 32px -8px #000000b3;--shadow-2xl:0 24px 48px -12px #000c;--shadow-primary:0 4px 16px -2px #2dd4bf4d;--success:#10b981;--success-light:#064e3b;--success-dark:#34d399;--warning:#f59e0b;--warning-light:#78350f;--warning-dark:#fbbf24;--error:#ef4444;--error-light:#7f1d1d;--error-dark:#f87171;--info:#0ea5e9;--info-light:#164e63;--info-dark:#38bdf8}*{box-sizing:border-box;margin:0;padding:0}body{letter-spacing:-.011em;margin:0;display:flex}#app{min-height:100vh;margin-left:var(--sidebar-width);background:var(--bg);flex:1;position:relative}#app:before{content:"";top:0;left:var(--sidebar-width);background:repeating-linear-gradient(transparent, transparent 79px, var(--border) 79px, var(--border) 80px);opacity:.3;pointer-events:none;z-index:0;height:320px;position:fixed;right:0}.container{max-width:1200px;margin:0 auto;padding:0 32px}.sidebar{width:var(--sidebar-width);background:var(--sidebar-bg);border-right:1px solid var(--border);z-index:var(--z-sticky);box-shadow:var(--shadow-md);flex-direction:column;display:flex;position:fixed;top:0;bottom:0;left:0}.sidebar-header{border-bottom:1px solid var(--border);padding:40px 28px}.sidebar-logo{font-family:var(--serif);color:var(--text);cursor:pointer;-webkit-user-select:none;user-select:none;letter-spacing:-.02em;align-items:center;gap:14px;font-size:22px;font-weight:600;display:flex}.sidebar-logo-icon{background:var(--gradient-primary);color:#fff;width:36px;height:36px;box-shadow:var(--shadow-primary);font-size:18px;font-weight:600;font-family:var(--sans);border-radius:6px;justify-content:center;align-items:center;display:flex}.sidebar-search{border-bottom:1px solid var(--border);padding:0 24px 20px}.search-input{border:1.5px solid var(--border);width:100%;font-size:14px;font-family:var(--sans);background:var(--bg-gray);color:var(--text);border-radius:7px;padding:10px 14px;transition:all .15s}.search-input::placeholder{color:var(--text-light)}.search-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--glacier);background:var(--bg);outline:none}.sidebar-nav{flex:1;padding:28px 0;overflow-y:auto}.sidebar-nav-item{color:var(--text-light);cursor:pointer;transition:all .15s var(--ease-out-expo);letter-spacing:-.01em;border-left:3px solid #0000;align-items:center;gap:14px;padding:14px 28px;font-size:15px;font-weight:500;text-decoration:none;display:flex}.sidebar-nav-item:hover{background:var(--bg-gray);color:var(--text)}.sidebar-nav-item.active{color:var(--primary);background:var(--primary-light);border-left-color:var(--primary);font-weight:600}.sidebar-nav-icon{text-align:center;color:currentColor;width:22px;font-size:19px}.sidebar-nav-divider{text-transform:uppercase;letter-spacing:.1em;color:var(--text-light);padding:16px 28px 8px;font-size:11px;font-weight:700}.sidebar-user{border-top:1px solid var(--border);padding:20px 24px}.sidebar-theme-toggle{border-top:1px solid var(--border);padding:16px 24px}.theme-toggle-btn{background:var(--bg-gray);border:1.5px solid var(--border);width:100%;color:var(--text);cursor:pointer;transition:all .15s var(--ease-out-expo);border-radius:7px;justify-content:center;align-items:center;gap:8px;padding:10px 16px;font-size:14px;font-weight:600;display:flex}.theme-toggle-btn:hover{background:var(--primary-light);border-color:var(--primary);color:var(--primary)}.sidebar-user-info{align-items:center;gap:12px;margin-bottom:12px;display:flex}.sidebar-user-name{color:var(--text);font-size:14px;font-weight:600}.sidebar-logout{border:1px solid var(--border);width:100%;color:var(--text-light);cursor:pointer;background:0 0;border-radius:4px;padding:8px 16px;font-size:14px;transition:all .2s}.sidebar-logout:hover{background:var(--bg-gray);border-color:var(--primary);color:var(--primary)}.app-header{display:none}.btn{cursor:pointer;transition:all .2s var(--ease-out-expo);font-size:15px;font-weight:600;font-family:var(--sans);letter-spacing:-.01em;border:none;border-radius:7px;padding:12px 24px}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:var(--shadow-sm)}.btn-secondary{color:var(--text);border:1.5px solid var(--border);background:0 0}.btn-secondary:hover{background:var(--bg-gray);border-color:var(--mist)}.btn-sm{padding:8px 16px;font-size:14px;font-weight:600}.mb{margin-bottom:20px}main{z-index:1;max-width:820px;margin:0 auto;padding:48px 40px;position:relative}.home-header{border-bottom:1px solid var(--border);margin-bottom:40px;padding-bottom:24px}.home-header h2{font-family:var(--serif);color:var(--text);letter-spacing:-.025em;margin-bottom:12px;font-size:32px;font-weight:500;line-height:1.2}.subtitle{color:var(--text-light);max-width:600px;margin-bottom:0;font-size:16px;line-height:1.6}#posts-list{flex-direction:column;gap:0;display:flex}.post-card{border:none;border-bottom:1px solid var(--border);cursor:pointer;transition:all .15s var(--ease-out-expo);text-align:left;background:0 0;border-radius:0;padding:28px 0}.post-card:hover{background:linear-gradient(90deg, var(--glacier) 0%, transparent 100%);box-shadow:var(--shadow-sm);padding-left:16px;transform:translate(2px)}.post-card:hover .post-title{color:var(--primary)}.post-card:active{transform:translate(1px)}.post-header-row{align-items:flex-start;gap:12px;margin-bottom:10px;display:flex}.post-title{font-family:var(--serif);color:var(--text);letter-spacing:-.02em;flex:1;font-size:22px;font-weight:500;line-height:1.35}.post-category-badge{background:var(--teal-light);border:1px solid var(--primary);color:var(--primary);cursor:pointer;border-radius:12px;flex-shrink:0;align-items:center;gap:4px;padding:4px 10px;font-size:11px;font-weight:600;transition:all .15s;display:inline-flex}.post-category-badge:hover{background:var(--primary);color:#fff;transform:translateY(-1px)}.post-meta{color:var(--text-light);font-size:12px;font-family:var(--mono);letter-spacing:0;gap:16px;margin-bottom:12px;display:flex}.post-author{text-transform:uppercase;letter-spacing:.06em;font-size:11px;font-weight:600}.post-reading-time{color:var(--text-light);font-size:12px}.post-reading-time:before{content:"📖 ";opacity:.7}.post-preview{color:var(--mist);font-size:15px;line-height:1.7}.empty-state{text-align:center;color:var(--text-light);padding:80px 20px;font-size:16px;line-height:1.7}.loading{text-align:center;color:var(--text-light);padding:60px;font-size:15px}.post-full{border:none;border-bottom:1px solid var(--border);background:0 0;margin-bottom:56px;padding:0 0 40px}.post-full 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a:hover{background:var(--glacier);border-bottom-color:var(--primary-dark)}.comments-section{background:0 0;border:none;padding:0}.comments-title{font-family:var(--serif);color:var(--text);letter-spacing:-.02em;margin-bottom:28px;font-size:24px;font-weight:500}.comment-form{margin-bottom:48px}.comment-form textarea{border:1.5px solid var(--border);width:100%;font-family:var(--sans);resize:vertical;background:var(--bg);min-height:100px;color:var(--text);border-radius:8px;margin-bottom:14px;padding:16px;font-size:15px;line-height:1.7;transition:all .15s}.comment-form textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--glacier);outline:none}.comment{border-left:2px solid var(--frost);background:0 0;border-radius:0;margin-bottom:18px;padding:18px 0 18px 20px;transition:all 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a:hover{text-decoration:underline}.create-post-container{max-width:800px;box-shadow:none;background:0 0;border:none;border-radius:0;margin:0 auto;padding:0}.create-post-container h2{font-family:var(--serif);color:var(--text);letter-spacing:-.025em;border-bottom:1px solid var(--border);margin-bottom:32px;padding-bottom:20px;font-size:32px;font-weight:500}.create-post-form input,.create-post-form textarea,.create-post-form select{border:1.5px solid var(--border);width:100%;font-size:15px;font-family:var(--sans);background:var(--bg);color:var(--text);border-radius:8px;margin-bottom:24px;padding:16px;transition:all .15s}.category-select,.file-input{cursor:pointer}.image-preview{margin-top:16px;position:relative}.image-preview img{border:1.5px solid var(--border);border-radius:8px;max-width:100%;max-height:400px}.remove-image-btn{background:var(--error);color:#fff;cursor:pointer;border:none;border-radius:6px;padding:8px 12px;font-size:14px;font-weight:600;transition:all 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forwards}.toast-success{background:var(--gradient-success)}.toast-error{background:var(--gradient-error)}.toast-info{background:var(--gradient-info)}.toast-icon{flex-shrink:0;font-size:24px}.toast-message{flex:1;line-height:1.4}@keyframes slideIn{0%{opacity:0;transform:translate(400px)}to{opacity:1;transform:translate(0)}}@keyframes fadeOut{to{opacity:0;transform:translate(20px)}}.loading-container{flex-direction:column;justify-content:center;align-items:center;gap:16px;padding:60px 20px;display:flex}.spinner{border:4px solid var(--border);border-top-color:var(--primary);border-radius:50%;width:48px;height:48px;animation:.8s linear infinite spin}.spinner-small{border-width:3px;width:20px;height:20px}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{color:var(--text-light);font-size:16px}.form-field{margin-bottom:20px;position:relative}.form-label{color:var(--text);margin-bottom:8px;font-size:14px;font-weight:600;display:block}.input-error{background-color:#ef44440d;border-color:#ef4444!important}.error-message{color:#ef4444;margin-top:6px;font-size:13px;font-weight:500;display:block}.password-strength{background:var(--border);border-radius:2px;height:4px;margin-top:8px;position:relative;overflow:hidden}.password-strength-bar{height:100%;transition:width .3s var(--ease-out-expo), background 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var(--ease-out-expo)}.post-card:hover{box-shadow:var(--shadow-xl), var(--shadow-primary);border-color:var(--primary);transform:translateY(-4px)scale(1.01)}.auth-container{box-shadow:var(--shadow-xl);border-radius:12px}:focus-visible{outline:3px solid var(--primary);outline-offset:3px;box-shadow:0 0 0 5px var(--glacier);border-radius:6px}button:focus-visible,a:focus-visible{outline:3px solid var(--primary);outline-offset:3px;box-shadow:0 0 0 5px var(--glacier)}.post-card:focus-visible{outline:2px solid var(--primary);outline-offset:4px;box-shadow:0 0 0 6px var(--glacier)}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.kbd{font-size:11px;font-family:var(--mono);color:var(--text-light);background:var(--bg-gray);border:1px solid var(--border);box-shadow:0 1px 0 var(--border);border-radius:4px;padding:2px 6px;font-weight:600;line-height:1;display:inline-block}article.post-card{cursor:pointer}article.post-card:focus-within{outline:2px solid var(--primary);outline-offset:2px}.avatar{color:#fff;text-transform:uppercase;width:40px;height:40px;box-shadow:var(--shadow-sm);border:2px solid var(--bg);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:16px;font-weight:600;display:flex}.avatar-small{width:32px;height:32px;font-size:14px}.avatar-large{width:56px;height:56px;font-size:24px}.post-meta{align-items:center;gap:12px;display:flex}.post-author-info{align-items:center;gap:8px;display:flex}.section-divider{background:linear-gradient(90deg, transparent, var(--border), transparent);height:1px;margin:32px 0}.fab{background:var(--gradient-primary);color:#fff;width:60px;height:60px;box-shadow:var(--shadow-xl), var(--shadow-primary);cursor:pointer;transition:all .25s var(--ease-out-expo);z-index:var(--z-sticky);animation:fabEnter .4s var(--ease-out-expo);border:none;border-radius:50%;justify-content:center;align-items:center;font-size:26px;display:flex;position:fixed;bottom:32px;right:32px}.fab:hover{box-shadow:var(--shadow-2xl), var(--shadow-primary);transform:scale(1.08)}.fab:active{transform:scale(.96)}@keyframes fabEnter{0%{opacity:0;transform:scale(0)}to{opacity:1;transform:scale(1)}}html{scroll-behavior:smooth}.btn{position:relative;overflow:hidden}.btn:before{content:"";width:0;height:0;transition:width .5s var(--ease-out-expo), height .5s var(--ease-out-expo);background:#ffffff40;border-radius:50%;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.btn:active:before{width:280px;height:280px}@keyframes fadeInUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.post-card{animation:fadeInUp .4s var(--ease-out-expo) backwards}.post-card:first-child{animation-delay:30ms}.post-card:nth-child(2){animation-delay:60ms}.post-card:nth-child(3){animation-delay:90ms}.post-card:nth-child(4){animation-delay:.12s}.post-card:nth-child(5){animation-delay:.15s}.post-card:nth-child(6){animation-delay:.18s}.empty-state{flex-direction:column;justify-content:center;align-items:center;gap:20px;padding:100px 20px;display:flex}.empty-state-icon{background:var(--glacier);width:100px;height:100px;color:var(--primary);border:2px solid var(--sky-light);border-radius:50%;justify-content:center;align-items:center;margin-bottom:8px;font-size:42px;display:flex}.empty-state-title{font-family:var(--serif);color:var(--text);letter-spacing:-.02em;margin:0;font-size:28px;font-weight:500}.empty-state-description{color:var(--text-light);text-align:center;max-width:480px;font-size:15px;line-height:1.7}body{line-height:1.75}h1,h2,h3{letter-spacing:-.02em;line-height:1.2}.badge{background:var(--glacier);color:var(--primary);border:1px solid var(--sky-light);font-size:11px;font-weight:600;font-family:var(--mono);letter-spacing:0;border-radius:10px;align-items:center;gap:4px;padding:3px 10px;display:inline-flex}.badge-primary{background:var(--primary-light);color:var(--primary);border-color:var(--primary)}.badge-count{background:var(--glacier);color:var(--primary);border:1px solid var(--sky-light)}@media (width<=768px){body{display:block}#app{margin-left:0}#app:before{height:240px;left:0}.sidebar{border-right:none;border-bottom:1.5px solid var(--border);width:100%;position:relative}.sidebar-header{padding:24px}.sidebar-logo{font-size:20px}.sidebar-logo-icon{width:32px;height:32px;font-size:16px}.sidebar-nav{padding:0;display:flex;overflow-x:auto}.sidebar-nav-item{border-bottom:3px solid #0000;border-left:none;flex-shrink:0;padding:16px 24px}.sidebar-nav-item.active{border-left:none;border-bottom-color:var(--primary)}main{padding:40px 24px}.home-header{margin-bottom:40px;padding-bottom:24px}.home-header h2{font-size:28px}.subtitle{font-size:15px}.post-card{padding:22px 0}.post-card .post-title{font-size:20px}.post-full .post-title{font-size:32px}.comments-title{font-size:22px}.comment{padding-left:20px;margin-left:0!important}.fab{width:56px;height:56px;font-size:24px;bottom:20px;right:20px}.empty-state{padding:80px 20px}.empty-state-icon{width:80px;height:80px;font-size:36px}.empty-state-title{font-size:24px}.auth-container{margin:40px auto;padding:36px 28px}.auth-container h2{font-size:26px}.create-post-container h2{font-size:28px}}