*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0a0a0a;--surface: #141414;--surface2: #1a1a1a;--border: #2a2a2a;--text: #e5e5e5;--text-dim: #888;--accent: #fff;--blue: #3b82f6;--radius: 12px;color-scheme:dark}html,body,#root{height:100%;width:100%;overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,SF Pro,Segoe UI,system-ui,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}body{padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}.app{display:flex;flex-direction:column;height:100%;max-width:600px;margin:0 auto}.header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border);flex-shrink:0}.header h1{font-size:17px;font-weight:600;letter-spacing:-.3px}.header-actions{display:flex;gap:8px}.icon-btn{width:36px;height:36px;border-radius:50%;border:none;background:var(--surface);color:var(--text);display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:16px;transition:background .15s}.icon-btn:active{background:var(--surface2)}.messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:16px;-webkit-overflow-scrolling:touch}.messages::-webkit-scrollbar{display:none}.msg{max-width:85%;padding:12px 16px;border-radius:18px;font-size:15px;line-height:1.5;word-wrap:break-word;white-space:pre-wrap;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.msg.user{align-self:flex-end;background:var(--blue);color:#fff;border-bottom-right-radius:4px}.msg.assistant{align-self:flex-start;background:var(--surface);border-bottom-left-radius:4px}.msg.assistant code{background:var(--bg);padding:2px 6px;border-radius:4px;font-size:13px;font-family:SF Mono,Fira Code,monospace}.msg.assistant pre{background:var(--bg);padding:12px;border-radius:8px;overflow-x:auto;margin:8px 0;font-size:13px;font-family:SF Mono,Fira Code,monospace}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:var(--text-dim)}.empty-state .logo{font-size:40px;margin-bottom:8px;opacity:.5}.empty-state p{font-size:14px}.typing{align-self:flex-start;padding:12px 20px;background:var(--surface);border-radius:18px;display:flex;gap:4px}.typing span{width:6px;height:6px;background:var(--text-dim);border-radius:50%;animation:bounce 1.4s infinite}.typing span:nth-child(2){animation-delay:.2s}.typing span:nth-child(3){animation-delay:.4s}@keyframes bounce{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-6px)}}.input-area{padding:12px 16px;border-top:1px solid var(--border);flex-shrink:0}.input-row{display:flex;gap:8px;align-items:flex-end;background:var(--surface);border-radius:24px;padding:4px 4px 4px 16px}.input-row textarea{flex:1;border:none;background:transparent;color:var(--text);font-size:15px;font-family:inherit;padding:10px 0;resize:none;outline:none;max-height:120px;line-height:1.4}.input-row textarea::placeholder{color:var(--text-dim)}.send-btn{width:36px;height:36px;border-radius:50%;border:none;background:var(--accent);color:var(--bg);display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;font-size:16px;transition:opacity .15s}.send-btn:disabled{opacity:.3;cursor:default}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);z-index:100;display:flex;align-items:flex-end;justify-content:center;animation:fadeIn .15s ease}.modal{background:var(--surface);width:100%;max-width:600px;border-radius:20px 20px 0 0;padding:20px;max-height:85vh;overflow-y:auto;animation:slideUp .25s ease}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.modal-header h2{font-size:17px;font-weight:600}.modal-header button{background:none;border:none;color:var(--blue);font-size:15px;font-weight:500;cursor:pointer;padding:4px 8px}.field{margin-bottom:20px}.field label{display:block;font-size:13px;font-weight:500;color:var(--text-dim);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px}.field input,.field select{width:100%;padding:12px 14px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:15px;font-family:inherit;outline:none;-webkit-appearance:none;-moz-appearance:none;appearance:none}.field select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 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16px;border-radius:var(--radius);cursor:pointer;transition:background .15s;display:flex;justify-content:space-between;align-items:center}.convo-item:active{background:var(--surface2)}.convo-item .title{font-size:15px;font-weight:500}.convo-item .date{font-size:12px;color:var(--text-dim)}.convo-item .preview{font-size:13px;color:var(--text-dim);margin-top:2px}.convo-delete{background:none;border:none;color:var(--text-dim);cursor:pointer;padding:4px 8px;font-size:14px}