.app{display:flex;height:100vh}.sidebar{width:240px;flex-shrink:0;border-right:1px solid #222;padding:1.5rem 1rem;display:flex;flex-direction:column;gap:.5rem;overflow-y:auto}.side-btn{text-align:left;font-family:inherit;font-size:.9rem;color:#f5f7fa;background:transparent;border:1px solid #333;padding:.55rem .75rem;cursor:pointer;transition:border-color .2s ease,color .2s ease}.side-btn:hover{border-color:#ffce1c;color:#ffce1c}.side-label{margin:1.25rem 0 .25rem;font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:#666}.chat-list{display:flex;flex-direction:column;gap:0}.chat-item{display:flex;align-items:center;justify-content:space-between;gap:.25rem;padding:.22rem .5rem}.chat-item-title{flex:1;font-size:.85rem;color:#bbb;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;cursor:pointer;transition:color .15s ease}.chat-item-title:hover,.chat-item.active .chat-item-title{color:#ffce1c}.chat-item-del{font-family:inherit;font-size:.9rem;line-height:1;color:#666;background:transparent;border:none;padding:0 .15rem;cursor:pointer;opacity:0;transition:opacity .15s ease,color .15s ease}.chat-item:hover .chat-item-del{opacity:1}.chat-item-del:hover{color:#ffce1c}.side-foot{margin-top:auto;padding-top:1rem;font-size:.8rem}.side-foot a,.side-foot a:visited{color:#888;text-decoration:none}.side-foot a:hover{color:#ffce1c}.chat-main{flex:1;display:flex;flex-direction:column;padding:2rem;overflow:hidden}@media(min-width:1240px){.chat-main{padding-right:calc(50vw - 380px)}}.chat-main.empty{justify-content:center;align-items:center}.thread{flex:1;width:100%;max-width:720px;margin:0 auto;overflow-y:auto}.thread,.sidebar,#chat-input{scrollbar-width:none;-ms-overflow-style:none}.thread::-webkit-scrollbar,.sidebar::-webkit-scrollbar,#chat-input::-webkit-scrollbar{display:none}.chat-main.empty .thread{display:none}.empty-title{display:none;margin:0 0 .4rem;text-align:center;font-size:1.6rem;font-weight:700;color:#f5f7fa}.chat-main.empty .empty-title{display:block}.empty-sub{display:none;margin:0 0 1.5rem;text-align:center;font-size:.8rem;color:#ffce1c}.chat-main.empty .empty-sub{display:block;animation:powered-pulse 3.2s ease-in-out infinite}@keyframes powered-pulse{0%,to{text-shadow:0 0 6px rgba(255,206,28,.4)}50%{text-shadow:0 0 12px rgba(255,206,28,.85),0 0 22px rgba(255,206,28,.45)}}@media(prefers-reduced-motion:reduce){.chat-main.empty .empty-sub{animation:none}}.composer{width:100%;max-width:720px;margin:0 auto}.chat-main.viewing-saved .composer{display:none}.chat-form{display:flex;align-items:flex-start;gap:.5rem;border:1px solid #222;padding:.85rem 1rem}.chat-main:not(.empty) .chat-form{margin-top:1rem}.chat-form:focus-within{border-color:#333}.prompt{color:#ffce1c;font-weight:700;line-height:1.6}#chat-input{flex:1;font-family:inherit;font-size:1rem;line-height:1.6;color:#f5f7fa;background:transparent;border:none;resize:none;overflow-y:auto;padding:0}#chat-input:focus{outline:none}#chat-input::placeholder{color:#555}#chat-send{font-family:inherit;font-size:.85rem;color:#ffce1c;background:transparent;border:1px solid #ffce1c;padding:.4rem 1rem;cursor:pointer;transition:background-color .2s ease,color .2s ease}#chat-send:hover{background:#ffce1c;color:#111}#chat-send:disabled{opacity:.4;cursor:default}.msg{position:relative;margin-bottom:1.75rem}.who{margin:0 0 .35rem;font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:#888}.msg.osprey .who{color:#ffce1c}.body{position:relative;margin:0;padding-right:5rem;white-space:pre-wrap;color:#f5f7fa}.msg.user .body{color:#bbb}.thinking{display:inline-flex;align-items:center;gap:5px;height:1.6em}.thinking .dot{width:6px;height:6px;border-radius:50%;background:#ffce1c;opacity:.25;animation:think 1.3s infinite ease-in-out}.thinking .dot:nth-child(2){animation-delay:.18s}.thinking .dot:nth-child(3){animation-delay:.36s}@keyframes think{0%,70%,to{opacity:.2;transform:translateY(0);box-shadow:none}35%{opacity:1;transform:translateY(-4px);box-shadow:0 0 6px 1px #ffce1c80}}.cursor{display:inline-block;width:7px;height:7px;margin-left:3px;border-radius:50%;background:#ffce1c;box-shadow:0 0 6px 1px #ffce1c80;vertical-align:baseline;animation:cursor-pulse 1s infinite ease-in-out}@keyframes cursor-pulse{0%,to{opacity:.3}50%{opacity:1}}.save-btn{position:absolute;bottom:0;right:0;-webkit-appearance:none;appearance:none;font-family:inherit;font-size:.75rem;line-height:1.6;color:#777;background:transparent;border:none;box-shadow:none;padding:0;cursor:pointer;opacity:0;transition:opacity .15s ease,color .15s ease}.msg.osprey:hover .save-btn,.saved-item:hover .save-btn{opacity:1}.save-btn:hover{color:#ffce1c}.save-btn.saved{color:#777;opacity:1}.save-btn.saved:hover{color:#ffce1c}.save-btn .tick{color:#ffce1c;margin-left:1px}.saved-head{margin:0 0 1.5rem;font-size:1.2rem;font-weight:700;color:#f5f7fa}.saved-empty{color:#888}.saved-item{position:relative;border-top:1px solid #222;padding:1.25rem 0}@media(max-width:720px){.sidebar{width:180px;padding:1rem .5rem}.chat-main{padding:1.25rem}}