:root{--primary: #4A90A4;--primary-dark: #3a7a8c;--primary-light: #e8f4f7;--accent: #7BAE9B;--accent-dark: #5d9882;--accent-light: #edf6f2;--background: #F5F5F0;--surface: #ffffff;--text: #333333;--text-muted: #666666;--text-light: #999999;--border: #e0e0d8;--error: #E57373;--error-bg: #fdeaea;--success: #66bb6a;--success-bg: #e8f5e9;--info: #42a5f5;--info-bg: #e3f2fd;--warning: #ffa726;--warning-bg: #fff8e1;--navbar-height: 64px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .08);--shadow-md: 0 4px 12px rgba(0, 0, 0, .1);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .12);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--transition: .2s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background-color:var(--background);color:var(--text);line-height:1.6;min-height:100vh}a{color:var(--primary);text-decoration:none;transition:color var(--transition)}a:hover{color:var(--primary-dark)}img{max-width:100%;height:auto}.navbar{background-color:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm);height:var(--navbar-height);position:sticky;top:0;z-index:100}.navbar-container{max-width:1200px;margin:0 auto;padding:0 1.5rem;height:100%;display:flex;align-items:center;gap:1.5rem}.navbar-brand{font-size:1.25rem;font-weight:700;color:var(--primary);text-decoration:none;white-space:nowrap;display:flex;align-items:center;gap:.4rem}.navbar-brand:hover{color:var(--primary-dark)}.navbar-brand-icon{font-size:1.3rem}.navbar-search{display:flex;align-items:center;flex:1;max-width:400px;gap:.5rem}.navbar-search-input{flex:1;padding:.45rem .85rem;border:1px solid var(--border);border-radius:999px;font-size:.875rem;background:var(--background);color:var(--text);outline:none;transition:border-color var(--transition),box-shadow var(--transition)}.navbar-search-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #4a90a426}.navbar-search-btn{padding:.45rem 1rem;background:var(--primary);color:#fff;border:none;border-radius:999px;font-size:.875rem;cursor:pointer;transition:background var(--transition);white-space:nowrap}.navbar-search-btn:hover{background:var(--primary-dark)}.navbar-links{display:flex;align-items:center;gap:1rem;margin-left:auto;white-space:nowrap}.navbar-link{color:var(--text-muted);font-size:.9rem;font-weight:500;transition:color var(--transition)}.navbar-link:hover{color:var(--primary)}.navbar-username{color:var(--primary);font-weight:600}.main-content{min-height:calc(100vh - var(--navbar-height))}.page-container{max-width:1200px;margin:0 auto;padding:2rem 1.5rem}.page-header{margin-bottom:2rem;display:flex;flex-direction:column;gap:.75rem}.page-title{font-size:1.75rem;font-weight:700;color:var(--text);line-height:1.3}.page-description{color:var(--text-muted);font-size:1rem}.section-title{font-size:1.4rem;font-weight:600;color:var(--text);margin-bottom:.5rem}.section-subtitle{color:var(--text-muted);margin-bottom:1.5rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;padding:.6rem 1.25rem;border-radius:var(--radius-sm);font-size:.9rem;font-weight:500;cursor:pointer;border:none;text-decoration:none;transition:background var(--transition),transform var(--transition),box-shadow var(--transition);white-space:nowrap}.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-sm)}.btn:active{transform:translateY(0)}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-dark);color:#fff}.btn-secondary{background:var(--surface);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover:not(:disabled){background:var(--background);color:var(--text)}.btn-danger{background:var(--error);color:#fff}.btn-danger:hover:not(:disabled){background:#d32f2f;color:#fff}.btn-sm{padding:.4rem .85rem;font-size:.825rem}.btn-full{width:100%}.alert{padding:.85rem 1.1rem;border-radius:var(--radius-sm);margin-bottom:1rem;font-size:.9rem;line-height:1.5}.alert-error{background:var(--error-bg);color:#c62828;border:1px solid #ef9a9a}.alert-success{background:var(--success-bg);color:#2e7d32;border:1px solid #a5d6a7}.alert-info{background:var(--info-bg);color:#1565c0;border:1px solid #90caf9}.form-group{display:flex;flex-direction:column;gap:.4rem;margin-bottom:1.25rem}.form-label{font-size:.875rem;font-weight:600;color:var(--text)}.form-input,.form-textarea,.form-select{padding:.65rem .9rem;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:.9rem;color:var(--text);background:var(--surface);font-family:inherit;outline:none;transition:border-color var(--transition),box-shadow var(--transition)}.form-input:focus,.form-textarea:focus,.form-select:focus{border-color:var(--primary);box-shadow:0 0 0 3px #4a90a426}.form-input::placeholder,.form-textarea::placeholder{color:var(--text-light)}.form-textarea{resize:vertical;min-height:100px;line-height:1.6}.form-select{cursor:pointer}.form-hint{font-size:.775rem;color:var(--text-muted)}.form-actions{display:flex;gap:.75rem;margin-top:.5rem}.card{background:var(--surface);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);border:1px solid var(--border);overflow:hidden;transition:box-shadow var(--transition),transform var(--transition)}.card:hover{box-shadow:var(--shadow-md)}.hero{background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);padding:4rem 1.5rem;text-align:center;color:#fff;margin-bottom:3rem}.hero-content{max-width:700px;margin:0 auto}.hero-title{font-size:2.75rem;font-weight:800;margin-bottom:.6rem;text-shadow:0 1px 3px rgba(0,0,0,.15)}.hero-subtitle{font-size:1.3rem;font-weight:400;margin-bottom:1rem;opacity:.92}.hero-description{font-size:1rem;margin-bottom:2rem;opacity:.85;line-height:1.7}.hero-search{display:flex;gap:.6rem;max-width:540px;margin:0 auto}.hero-search-input{flex:1;padding:.75rem 1.1rem;border-radius:999px;border:none;font-size:.95rem;outline:none;background:#fffffff2;color:var(--text)}.hero-search-input:focus{box-shadow:0 0 0 3px #fff6}.categories-section{margin-bottom:3rem}.categories-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.25rem}.category-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:1.5rem;cursor:pointer;transition:box-shadow var(--transition),transform var(--transition),border-color var(--transition);display:flex;flex-direction:column;gap:.75rem}.category-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--primary)}.category-card:focus{outline:none;box-shadow:0 0 0 3px #4a90a44d}.category-card-body{flex:1}.category-card-title{font-size:1.1rem;font-weight:700;color:var(--text);margin-bottom:.5rem}.category-card-description{font-size:.875rem;color:var(--text-muted);line-height:1.6}.category-card-footer{display:flex;align-items:center;justify-content:space-between;padding-top:.75rem;border-top:1px solid var(--border);font-size:.825rem;color:var(--text-muted)}.category-thread-count{display:flex;align-items:center;gap:.3rem}.category-arrow{color:var(--primary);font-weight:600;transition:transform var(--transition)}.category-card:hover .category-arrow{transform:translate(4px)}.info-section{padding:2rem 0}.info-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1.5rem}.info-card{background:var(--surface);border-radius:var(--radius-md);padding:1.75rem;text-align:center;border:1px solid var(--border)}.info-icon{font-size:2rem;margin-bottom:.75rem}.info-card h3{font-size:1rem;font-weight:600;margin-bottom:.5rem;color:var(--text)}.info-card p{font-size:.875rem;color:var(--text-muted);line-height:1.6}.threads-list{display:flex;flex-direction:column;gap:.75rem}.thread-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:1.1rem 1.25rem;transition:box-shadow var(--transition),border-color var(--transition)}.thread-card:hover{box-shadow:var(--shadow-sm);border-color:var(--primary)}.thread-card--pinned{border-left:3px solid var(--primary);background:var(--primary-light)}.thread-card-header{display:flex;flex-direction:column;gap:.5rem}.thread-card-title-row{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap}.thread-pin-icon{font-size:.9rem}.thread-card-title{font-size:1rem;font-weight:600;color:var(--text);text-decoration:none;flex:1}.thread-card-title:hover{color:var(--primary);text-decoration:underline}.thread-card-meta{display:flex;flex-wrap:wrap;gap:1rem;font-size:.8rem;color:var(--text-muted)}.meta-icon{margin-right:.2rem}.badge{display:inline-flex;align-items:center;padding:.15rem .55rem;border-radius:999px;font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.03em}.badge-locked{background:#fbe9e7;color:#bf360c}.badge-pinned{background:var(--primary-light);color:var(--primary-dark)}.badge-admin{background:#fce4ec;color:#880e4f}.badge-mod{background:#e8f5e9;color:#1b5e20}.badge-user{background:var(--primary-light);color:var(--primary-dark)}.thread-detail{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:2rem;margin-bottom:2rem;box-shadow:var(--shadow-sm)}.thread-detail-header{margin-bottom:1.5rem;padding-bottom:1.25rem;border-bottom:1px solid var(--border);display:flex;flex-direction:column;gap:.75rem}.thread-detail-title-row{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap}.thread-detail-title{font-size:1.6rem;font-weight:700;color:var(--text);line-height:1.3;flex:1}.thread-detail-meta{display:flex;flex-wrap:wrap;gap:1.25rem;font-size:.85rem;color:var(--text-muted)}.thread-detail-content{font-size:.95rem;line-height:1.8;color:var(--text)}.thread-detail-content p{margin-bottom:1rem}.thread-detail-content p:last-child{margin-bottom:0}.comments-section{margin-top:2rem}.comments-title{font-size:1.2rem;font-weight:600;margin-bottom:1.25rem;padding-bottom:.75rem;border-bottom:1px solid var(--border)}.comment-thread{margin-bottom:1rem}.comment-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:1rem 1.25rem;margin-bottom:.5rem}.comment-item--nested{margin-left:2rem;background:var(--background);border-left:3px solid var(--accent)}.comment-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:.6rem;font-size:.85rem}.comment-author{font-weight:600;color:var(--text);display:flex;align-items:center;gap:.35rem}.comment-avatar{font-size:1rem}.comment-date{color:var(--text-light)}.comment-content{font-size:.9rem;line-height:1.7;color:var(--text);margin-bottom:.75rem;white-space:pre-wrap}.comment-actions{display:flex;gap:.75rem}.comment-action-btn{background:none;border:none;font-size:.8rem;cursor:pointer;padding:.25rem .5rem;border-radius:var(--radius-sm);color:var(--text-muted);transition:background var(--transition),color var(--transition)}.comment-action-btn:hover{background:var(--background);color:var(--text)}.comment-upvote-btn:hover{color:var(--primary);background:var(--primary-light)}.comment-reply-btn:hover{color:var(--accent-dark)}.comment-delete-btn:hover{color:var(--error);background:var(--error-bg)}.reply-form{margin-left:2rem;background:var(--background);padding:1rem;border-radius:var(--radius-sm);border:1px solid var(--border);margin-top:.5rem}.reply-textarea{width:100%;margin-bottom:.6rem}.reply-form-actions{display:flex;gap:.5rem}.new-comment-form{margin-top:2rem;padding:1.5rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md)}.new-comment-title{font-size:1rem;font-weight:600;margin-bottom:1rem}.auth-prompt{margin-top:2rem;padding:1.25rem;background:var(--primary-light);border-radius:var(--radius-md);text-align:center;color:var(--text-muted);font-size:.9rem}.auth-page{min-height:calc(100vh - var(--navbar-height));display:flex;align-items:center;justify-content:center;padding:2rem 1rem;background:linear-gradient(160deg,var(--primary-light) 0%,var(--accent-light) 100%)}.auth-card{background:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:2.5rem;width:100%;max-width:440px}.auth-header{text-align:center;margin-bottom:2rem}.auth-title{font-size:1.75rem;font-weight:700;color:var(--text);margin-bottom:.4rem}.auth-subtitle{color:var(--text-muted);font-size:.9rem}.auth-form{display:flex;flex-direction:column}.auth-footer{text-align:center;margin-top:1.5rem;font-size:.875rem;color:var(--text-muted)}.auth-link{color:var(--primary);font-weight:600}.auth-link:hover{color:var(--primary-dark)}.profile-page{max-width:700px;margin:0 auto}.profile-header{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:2rem;display:flex;gap:1.5rem;align-items:flex-start;margin-bottom:2rem;box-shadow:var(--shadow-sm)}.profile-avatar{flex-shrink:0}.avatar-img{width:80px;height:80px;border-radius:50%;object-fit:cover;border:3px solid var(--primary)}.avatar-placeholder{width:80px;height:80px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;font-size:2rem;font-weight:700;color:#fff}.profile-info{flex:1;display:flex;flex-direction:column;gap:.4rem}.profile-username{font-size:1.5rem;font-weight:700}.profile-joined{font-size:.825rem;color:var(--text-muted)}.profile-bio{font-size:.9rem;color:var(--text);line-height:1.6;margin-top:.25rem}.profile-edit-form{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:1.75rem;box-shadow:var(--shadow-sm)}.form-page-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:2rem;max-width:720px;margin:0 auto;box-shadow:var(--shadow-sm)}.form-page-card .page-title{margin-bottom:.4rem}.form-page-card .page-description{margin-bottom:1.75rem}.pagination{display:flex;align-items:center;justify-content:center;gap:1.25rem;margin-top:2rem;padding:1rem 0}.pagination-info{color:var(--text-muted);font-size:.875rem;font-weight:500}.breadcrumb{margin-bottom:1.5rem;font-size:.875rem;color:var(--text-muted)}.breadcrumb-link{color:var(--primary);transition:color var(--transition)}.breadcrumb-link:hover{color:var(--primary-dark)}.breadcrumb-sep{margin:0 .3rem;color:var(--text-light)}.loading-container{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:4rem 1rem;gap:1rem}.loading-spinner{width:40px;height:40px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}.loading-text{color:var(--text-muted);font-size:.9rem}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{text-align:center;padding:3rem 1rem;color:var(--text-muted);font-size:.95rem;display:flex;flex-direction:column;align-items:center;gap:1rem}.not-found-page{display:flex;align-items:center;justify-content:center;min-height:calc(100vh - var(--navbar-height) - 4rem)}.not-found-content{text-align:center;max-width:450px}.not-found-code{font-size:7rem;font-weight:900;color:var(--primary);line-height:1;margin-bottom:.5rem;opacity:.6}.not-found-title{font-size:1.75rem;font-weight:700;margin-bottom:.75rem}.not-found-description{color:var(--text-muted);margin-bottom:2rem;line-height:1.6}.search-query{color:var(--primary)}.search-result-count{color:var(--text-muted);font-size:.875rem;margin-bottom:1rem}@media (max-width: 768px){.navbar-container{padding:0 1rem;gap:.75rem}.navbar-search{max-width:none}.hero{padding:2.5rem 1rem}.hero-title{font-size:2rem}.hero-search{flex-direction:column}.hero-search-input,.navbar-search-btn{border-radius:var(--radius-sm)}.categories-grid{grid-template-columns:1fr}.thread-card-meta{gap:.6rem}.profile-header{flex-direction:column;align-items:center;text-align:center}.thread-detail{padding:1.25rem}.auth-card{padding:1.75rem 1.25rem}.comment-item--nested,.reply-form{margin-left:.75rem}.form-page-card{padding:1.25rem}.page-container{padding:1.25rem 1rem}}@media (max-width: 480px){.navbar-search{display:none}.navbar-links{gap:.5rem}.hero-title{font-size:1.75rem}.info-grid{grid-template-columns:1fr}}