:root{--bg-primary:#fff;--bg-secondary:#f8f8f8;--bg-tertiary:#f0f0f0;--border-color:#e0e0e0;--text-primary:#1a1a1a;--text-secondary:#666;--text-muted:#999;--accent:#06c;--accent-hover:#0052a3;--success:#16a34a;--warning:#d97706;--linkedin-blue:#0a66c2;--linkedin-blue-hover:#004182;--twitter-blue:#1d9bf0;--twitter-blue-hover:#1a8cd8;--twitter-black:#0f1419}*{margin:0;padding:0;box-sizing:border-box}body{font-family:DM Sans,-apple-system,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh}.container{max-width:900px;margin:0 auto;padding:60px 24px}.header{margin-bottom:32px}.header h1{font-size:28px;font-weight:600;letter-spacing:-.5px;margin-bottom:8px}.header p{color:var(--text-secondary);font-size:15px}.platform-tabs{display:flex;gap:0;margin-bottom:32px;border-bottom:1px solid var(--border-color)}.platform-tab{display:flex;align-items:center;gap:8px;padding:14px 24px;background:none;border:none;border-bottom:2px solid transparent;font-family:inherit;font-size:14px;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:all .15s ease;margin-bottom:-1px}.platform-tab.active,.platform-tab:hover{color:var(--text-primary)}.platform-tab.linkedin-active{border-bottom-color:var(--linkedin-blue);color:var(--linkedin-blue)}.platform-tab.twitter-active{border-bottom-color:var(--twitter-black);color:var(--twitter-black)}.platform-icon{font-weight:700;font-size:16px}.platform-tab.linkedin-active .platform-icon{color:var(--linkedin-blue)}.platform-content{padding:24px;border:1px solid var(--border-color);background:var(--bg-primary)}.platform-content.linkedin{border-left:3px solid var(--linkedin-blue)}.platform-content.twitter{border-left:3px solid var(--twitter-black)}.section{margin-bottom:32px}.section-label{font-size:12px;font-weight:500;text-transform:uppercase;letter-spacing:1px;color:var(--text-secondary);margin-bottom:12px}.post-type-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:12px;gap:12px}.post-type-btn{background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-primary);padding:16px;font-family:inherit;font-size:14px;font-weight:500;cursor:pointer;transition:all .15s ease;text-align:left}.post-type-btn:hover{background:var(--bg-tertiary);border-color:var(--text-muted)}.post-type-btn.active{border-color:var(--linkedin-blue);background:var(--bg-tertiary)}.post-type-btn .type-title{display:block;margin-bottom:4px}.post-type-btn .type-desc{font-size:12px;color:var(--text-secondary);font-weight:400}.example-posts-info{font-size:13px;color:var(--text-secondary);margin-bottom:16px;line-height:1.5}.example-posts-grid{display:flex;flex-direction:column;gap:16px}.example-post-box{background:var(--bg-secondary);border:1px solid var(--border-color);padding:16px}.example-label{font-size:12px;font-weight:500;color:var(--text-secondary);margin-bottom:8px;display:flex;align-items:center;gap:8px}.example-label .required{color:#dc2626;font-weight:400;font-size:11px}.example-label .optional{color:var(--text-muted);font-weight:400;font-size:11px}.example-textarea{min-height:80px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.verbosity-row{display:flex;align-items:center;gap:16px}.verbosity-select{background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-primary);font-family:inherit;font-size:14px;cursor:pointer;transition:border-color .15s ease;min-width:140px;-webkit-appearance:none;-moz-appearance:none;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 fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding:12px 36px 12px 16px}.verbosity-select:focus{outline:none;border-color:var(--text-muted)}.verbosity-desc{font-size:13px;color:var(--text-secondary)}textarea{width:100%;background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-primary);font-family:inherit;font-size:14px;padding:16px;resize:vertical;min-height:140px;transition:border-color .15s ease}textarea:focus{outline:none;border-color:var(--text-muted)}textarea::placeholder{color:var(--text-muted)}.image-reminder{background:#fffbeb;border:1px solid #fde68a;border-left:3px solid var(--warning);padding:16px;margin-bottom:16px}.image-reminder p{font-size:13px;color:var(--text-secondary);margin-bottom:4px}.image-reminder p:last-child{margin-bottom:0}.image-reminder strong{color:var(--text-primary);font-weight:500}.generate-btn{background:var(--accent);border:none;color:#fff;padding:14px 28px;font-family:inherit;font-size:14px;font-weight:500;cursor:pointer;transition:background .15s ease;width:100%}.generate-btn.linkedin{background:var(--linkedin-blue)}.generate-btn.linkedin:hover:not(:disabled){background:var(--linkedin-blue-hover)}.generate-btn.twitter{background:var(--twitter-black)}.generate-btn.twitter:hover:not(:disabled){background:#2f3336}.generate-btn:disabled{opacity:.5;cursor:not-allowed}.results{margin-top:48px;border-top:1px solid var(--border-color);padding-top:32px}.results-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.results-header h2{font-size:18px;font-weight:600}.post-card{background:var(--bg-secondary);border:1px solid var(--border-color);padding:24px;margin-bottom:16px}.post-card.linkedin{border-left:3px solid var(--linkedin-blue)}.post-card.twitter{border-left:3px solid var(--twitter-black)}.post-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border-color)}.post-number{font-family:JetBrains Mono,monospace}.copy-btn,.post-number{font-size:12px;color:var(--text-secondary)}.copy-btn{background:transparent;border:1px solid var(--border-color);padding:6px 12px;font-family:inherit;cursor:pointer;transition:all .15s ease}.copy-btn:hover{border-color:var(--text-muted);color:var(--text-primary)}.copy-btn.copied{border-color:var(--success);color:var(--success)}.post-content{font-size:14px;line-height:1.7;white-space:pre-wrap;color:var(--text-primary)}.post-content.twitter{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:15px;line-height:1.5}.more-btn{background:none;border:none;font-family:inherit;font-size:14px;cursor:pointer;padding:0;margin-left:4px}.more-btn.linkedin{color:#b0b0b0}.more-btn.linkedin:hover{color:var(--text-secondary)}.more-btn.twitter{color:var(--twitter-blue);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:15px;display:block;margin-left:0;margin-top:8px}.more-btn.twitter:hover{color:var(--twitter-blue-hover);text-decoration:underline}.less-btn{background:none;border:none;font-family:inherit;font-size:13px;cursor:pointer;padding:0;margin-top:12px;display:block}.less-btn.linkedin{color:#b0b0b0}.less-btn.linkedin:hover{color:var(--text-secondary)}.less-btn.twitter{color:var(--twitter-blue);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.less-btn.twitter:hover{color:var(--twitter-blue-hover);text-decoration:underline}.loading{text-align:center;padding:48px;color:var(--text-secondary)}.loading-spinner{display:inline-block;width:20px;height:20px;border:2px solid var(--border-color);border-top-color:var(--accent);animation:spin .8s linear infinite;margin-bottom:12px}@keyframes spin{to{transform:rotate(1turn)}}.error{background:#fef2f2;border:1px solid #fecaca;border-left:3px solid #ef4444;padding:16px;color:#b91c1c;font-size:14px;margin-top:16px}@media (max-width:640px){.post-type-grid{grid-template-columns:1fr}.container{padding:32px 16px}.platform-tabs{flex-direction:column}.platform-tab{border-bottom:none;border-left:2px solid transparent}.platform-tab.linkedin-active{border-left-color:var(--linkedin-blue);border-bottom-color:transparent}.platform-tab.twitter-active{border-left-color:var(--twitter-black);border-bottom-color:transparent}}