*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #1e4d7b;--primary-dark: #0f2d4a;--accent-color: #f59e42;--bg-color: #f5f0e6;--card-bg: #fffbf2;--text-color: #1a2f3d;--text-muted: #5a6b7c;--border-color: #d4c5b0;--success-color: #48bb78;--danger-color: #e55757;--shadow: 0 1px 3px rgba(0, 0, 0, .1);--shadow-md: 0 4px 6px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .1);--radius: 12px;--radius-sm: 8px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background:linear-gradient(135deg,#f5f0e6,#e8dcc8);color:var(--text-color);min-height:100vh;line-height:1.6}a{text-decoration:none;color:inherit}button{cursor:pointer;border:none;outline:none;font-family:inherit}input,textarea{font-family:inherit;border:none;outline:none}.container{max-width:1200px;margin:0 auto;padding:0 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var(--border-color)}.auth-btn.login:hover{border-color:var(--primary-color);color:var(--primary-color)}.auth-btn.signup{background:linear-gradient(135deg,var(--primary-color),var(--primary-dark));color:#fff}.user-menu{display:flex;align-items:center;gap:10px}.user-name{font-weight:500}.logout-btn{padding:6px 12px;background:var(--bg-color);border-radius:var(--radius-sm);color:var(--text-muted);font-size:.9rem}.logout-btn:hover{color:var(--danger-color)}.categories-wrapper{position:relative}.categories-btn{padding:8px 16px;background:var(--bg-color);border-radius:var(--radius-sm);color:var(--text-color);font-weight:500;display:flex;align-items:center;gap:8px}.categories-dropdown{position:fixed;top:auto;left:0;right:0;margin-top:0;background:var(--card-bg);border-radius:0;box-shadow:var(--shadow-lg);max-height:400px;overflow-y:auto;width:100%;z-index:1000;display:none;border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color)}.categories-dropdown.show{display:block}.categories-dropdown-header{padding:15px;border-bottom:1px solid var(--border-color);font-weight:700;text-align:center;background:linear-gradient(135deg,var(--primary-color),var(--primary-dark));color:#fff;border-radius:0}.categories-list{padding:30px 20px;display:flex;flex-wrap:wrap;gap:12px;justify-content:center;max-width:1400px;margin:0 auto}.category-tag{padding:8px 16px;border-radius:20px;font-size:.9rem;font-weight:500;cursor:pointer;transition:all .2s;color:#fff;background:var(--primary-color);border:1px solid var(--primary-color)}.category-tag:hover{transform:scale(1.05);background:var(--primary-dark);box-shadow:0 4px 12px #667eea66}.main-content{padding:30px 0;max-width:800px;margin:0 auto}.post-card{background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin-bottom:20px;transition:box-shadow 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var(--border-color);border-radius:var(--radius-sm);resize:vertical;font-size:1rem;background:var(--bg-color)}.comment-form textarea:focus{border-color:var(--primary-color)}.form-actions{display:flex;justify-content:space-between;align-items:center;margin-top:10px}.anon-toggle{display:flex;align-items:center;gap:8px;color:var(--text-muted);font-size:.9rem}.submit-btn{background:linear-gradient(135deg,var(--primary-color),var(--primary-dark));color:#fff;padding:10px 25px;border-radius:var(--radius-sm);font-weight:600;transition:transform .2s}.submit-btn:hover{transform:translateY(-2px)}.comment-card{padding:15px 0;border-bottom:1px solid var(--border-color)}.comment-card:last-child{border-bottom:none}.comment-content{margin-bottom:10px;line-height:1.6}.comment-footer{display:flex;justify-content:space-between;align-items:center}.comment-meta{display:flex;gap:10px;align-items:center;font-size:.85rem;color:var(--text-muted)}.comment-author{font-weight:500;color:var(--text-color)}.comment-votes{display:flex;align-items:center;gap:5px}.new-post-form{background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow);padding:30px}.form-group{margin-bottom:20px}.form-label{display:block;margin-bottom:8px;font-weight:600;color:var(--text-color)}.form-select{width:100%;padding:12px 15px;border:1px solid var(--border-color);border-radius:var(--radius-sm);font-size:1rem;background:var(--bg-color);cursor:pointer}.form-textarea{width:100%;min-height:250px;padding:15px;border:1px solid var(--border-color);border-radius:var(--radius-sm);resize:vertical;font-size:1.05rem;line-height:1.6;background:var(--bg-color)}.form-select:focus,.form-textarea:focus{border-color:var(--primary-color)}.form-hint{color:var(--text-muted);font-size:.85rem;margin-top:8px}.auth-container{max-width:450px;margin:50px auto;background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:40px}.auth-title{text-align:center;font-size:1.8rem;margin-bottom:10px;background:linear-gradient(135deg,var(--primary-color),var(--primary-dark));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.auth-subtitle{text-align:center;color:var(--text-muted);margin-bottom:30px}.auth-form .form-group{margin-bottom:20px}.auth-form input{width:100%;padding:12px 15px;border:1px solid var(--border-color);border-radius:var(--radius-sm);font-size:1rem;background:var(--bg-color)}.auth-form input:focus{border-color:var(--primary-color)}.auth-submit{width:100%;background:linear-gradient(135deg,var(--primary-color),var(--primary-dark));color:#fff;padding:14px;border-radius:var(--radius-sm);font-size:1rem;font-weight:600;margin-top:10px}.auth-switch{text-align:center;margin-top:20px;color:var(--text-muted)}.auth-switch a{color:var(--primary-color);font-weight:600}.error-message{background:#fff5f5;color:var(--danger-color);padding:12px 15px;border-radius:var(--radius-sm);margin-bottom:20px;border:1px solid #fed7d7}.back-btn{display:inline-flex;align-items:center;gap:8px;color:var(--text-muted);margin-bottom:20px;transition:color 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-1;order:-1;margin-bottom:20px}.post-detail,.new-post-form,.comments-section{padding:20px}.categories-dropdown{width:100%;max-width:280px}}