.app{height:100%;padding:0}.main-container{width:100%;max-width:100%;margin:0;height:100%;padding:24px 32px;display:flex;flex-direction:column;box-sizing:border-box;background:#f2f2f2}.content-wrapper{display:grid;grid-template-columns:1fr 80px 1fr;gap:0;align-items:stretch;width:100%;flex:1;min-height:0}.panel{background:#fff;border-radius:24px;border:1px solid #e5e7eb;box-shadow:0 18px 45px #0f172a14;padding:28px;display:flex;flex-direction:column;transition:all .3s ease}.input-panel,.output-panel{background:#fff}.output-panel.has-result{border-color:#10b981;box-shadow:0 18px 45px #10b9811f}.panel-header{display:flex;align-items:center;gap:16px;margin-bottom:24px;padding-bottom:20px;border-bottom:2px solid #eff6ff}.panel-icon{font-size:2rem;width:56px;height:56px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#eff6ff,#dbeafe);border-radius:16px;border:1px solid #bfdbfe}.panel-title h2{color:#1e40af;font-size:1.4rem;font-weight:700;margin-bottom:4px;letter-spacing:-.3px}.panel-title p{color:#64748b;font-size:.9rem}.post-form{display:flex;flex-direction:column;gap:20px;flex:1;min-height:0}.textarea-wrapper{flex:1;display:flex;flex-direction:column;min-height:200px}.post-textarea{flex:1;width:100%;padding:20px;border:2px solid #e2e8f0;border-radius:12px;font-size:1rem;line-height:1.7;resize:none;background:#f8fafc;color:#1e293b;font-family:inherit;transition:all .3s}.post-textarea:focus{outline:none;border-color:#2563eb;background:#fff;box-shadow:0 0 0 3px #2563eb1a}.post-textarea::placeholder{color:#94a3b8}.textarea-footer{display:flex;justify-content:space-between;align-items:center;margin-top:12px;padding:0 4px}.char-count{color:#64748b;font-size:.85rem}.btn-clear{background:transparent;border:none;color:#64748b;font-size:.85rem;cursor:pointer;padding:4px 12px;border-radius:8px;transition:all .2s}.btn-clear:hover{color:#1e40af;background:#eff6ff}.btn{padding:16px 28px;border:none;border-radius:12px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s;white-space:nowrap;display:inline-flex;align-items:center;justify-content:center;gap:10px;font-family:inherit}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-boost{background:linear-gradient(135deg,#2563eb,#1e40af);color:#fff;box-shadow:0 4px 12px #2563eb4d;font-size:1.1rem;padding:18px 32px}.btn-boost:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #2563eb66}.btn-boost:active:not(:disabled){transform:translateY(0)}.boost-icon{font-size:1.3rem}.btn-spinner{display:inline-block;width:18px;height:18px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}.btn-copy{background:linear-gradient(135deg,#10b981,#059669);color:#fff;flex:1;box-shadow:0 4px 12px #10b9814d}.btn-copy:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #10b98166}.btn-copy.copied{background:linear-gradient(135deg,#059669,#047857)}.btn-secondary{background:#f1f5f9;color:#1e40af;border:1px solid #e2e8f0}.btn-secondary:hover:not(:disabled){background:#e2e8f0;border-color:#cbd5e1}.btn-outline{background:transparent;color:#64748b;border:1px solid #e2e8f0}.btn-outline:hover:not(:disabled){background:#f8fafc;color:#1e40af;border-color:#cbd5e1}.center-connector{display:flex;align-items:center;justify-content:center}.arrow-indicator{width:48px;height:48px;background:#fff;border:1px solid #e5e7eb;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#64748b;font-size:1.5rem;box-shadow:0 4px 12px #0f172a14}.loading-indicator{position:relative;width:60px;height:60px;display:flex;align-items:center;justify-content:center}.pulse-ring{position:absolute;width:100%;height:100%;border:2px solid rgba(37,99,235,.5);border-radius:50%;animation:pulse-ring 1.5s ease-out infinite}.pulse-ring.delay-1{animation-delay:.3s}.pulse-ring.delay-2{animation-delay:.6s}.loading-bolt{font-size:1.5rem;animation:bolt-pulse .8s ease-in-out infinite alternate}@keyframes pulse-ring{0%{transform:scale(.5);opacity:1}to{transform:scale(1.5);opacity:0}}@keyframes bolt-pulse{0%{transform:scale(1)}to{transform:scale(1.2)}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.output-content{flex:1;display:flex;flex-direction:column;min-height:0}.boosted-post-wrapper{flex:1;overflow-y:auto;margin-bottom:20px;min-height:0;max-height:446px}.boosted-post{background:linear-gradient(135deg,#eff6ff,#dbeafe);border:1px solid #bfdbfe;border-radius:12px;padding:24px;color:#1e293b;font-size:1rem;line-height:1.8;white-space:pre-wrap}.output-actions{display:flex;gap:12px;flex-wrap:wrap}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:40px 20px}.empty-icon{font-size:3.5rem;margin-bottom:20px}.empty-state h3{color:#1e40af;font-size:1.4rem;margin-bottom:12px;font-weight:600}.empty-state p{color:#64748b;font-size:1rem;max-width:280px;line-height:1.6;margin-bottom:32px}.feature-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}.feature-item{display:flex;align-items:center;gap:8px;color:#475569;font-size:.9rem}.feature-check{color:#10b981;font-weight:700}.alert{padding:16px 20px;border-radius:12px;margin-top:20px;display:flex;gap:12px;align-items:flex-start}.alert-icon{font-size:1.2rem;flex-shrink:0}.alert-error{background:#fef2f2;border:2px solid #fecaca;color:#991b1b}.alert-content{flex:1;font-size:.95rem}.tips-section{margin-top:auto;padding-top:24px;border-top:1px solid #e5e7eb}.tips-section h3{color:#1e40af;font-size:.95rem;font-weight:600;margin-bottom:16px}.tips-list{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:8px}.tips-list li{color:#64748b;font-size:.85rem;padding-left:20px;position:relative}.tips-list li:before{content:"✓";position:absolute;left:0;color:#2563eb;font-weight:700}.powered-by{margin-top:20px;padding-top:16px;display:flex;justify-content:center;gap:8px;font-size:.85rem;color:#6b7280}.powered-by .brand{font-weight:600;color:#111827}@media (max-width: 1024px){.content-wrapper{grid-template-columns:1fr;grid-template-rows:auto auto auto;gap:20px}.center-connector{transform:rotate(90deg);padding:10px 0}.main-container{padding:16px;height:auto;min-height:100vh}.panel{min-height:auto}.textarea-wrapper{min-height:180px}.boosted-post-wrapper{max-height:400px}}@media (max-width: 640px){.panel{padding:20px}.panel-header{gap:12px;margin-bottom:20px}.panel-icon{width:48px;height:48px;font-size:1.5rem}.panel-title h2{font-size:1.2rem}.output-actions{flex-direction:column}.btn-copy,.btn-secondary,.btn-outline{width:100%}.tips-list,.feature-list{grid-template-columns:1fr}}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f8fafc}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}