.ast-shell{background:var(--bg);flex-direction:column;height:100%;max-height:100vh;display:flex;overflow:hidden}.ast-header{border-bottom:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;padding:14px 20px 12px;display:flex}.ast-header-left{align-items:baseline;gap:10px;display:flex}.ast-title{font-family:var(--font-display);color:var(--fire);letter-spacing:1.5px;text-transform:uppercase;font-size:20px;font-weight:700}.ast-model-badge{font-family:var(--font-mono);color:var(--dim);background:var(--surface);border:1px solid var(--border);letter-spacing:.4px;border-radius:10px;padding:2px 8px;font-size:9px}.ast-clear-btn{font-family:var(--font-mono);border:1px solid var(--border);border-radius:var(--r-sm);color:var(--dim);cursor:pointer;letter-spacing:.4px;text-transform:uppercase;background:0 0;padding:4px 12px;font-size:10px;font-weight:700;transition:all .12s}.ast-clear-btn:hover{border-color:var(--muted);color:var(--muted)}.ast-messages{scroll-behavior:smooth;flex-direction:column;flex:1;gap:4px;padding:20px 20px 8px;display:flex;overflow-y:auto}.ast-empty{text-align:center;max-width:520px;margin:auto;padding:20px 0 40px}.ast-empty-flame{filter:drop-shadow(0 0 12px #ff6b0080);margin-bottom:12px;font-size:40px}.ast-empty-title{font-family:var(--font-display);color:var(--light);letter-spacing:1.5px;text-transform:uppercase;margin-bottom:8px;font-size:22px;font-weight:700}.ast-empty-sub{font-family:var(--font-body);color:var(--muted);margin-bottom:24px;font-size:13px;line-height:1.5}.ast-suggestions{flex-wrap:wrap;justify-content:center;gap:8px;display:flex}.ast-suggestion{font-family:var(--font-mono);background:var(--surface);border:1px solid var(--border);color:var(--text);cursor:pointer;text-align:left;border-radius:20px;padding:7px 12px;font-size:11px;line-height:1.4;transition:all .15s}.ast-suggestion:hover{border-color:var(--fire);color:var(--light);background:#ff6b000f}.ast-msg{align-items:flex-start;gap:10px;max-width:100%;margin-bottom:12px;display:flex}.ast-msg-user{flex-direction:row-reverse}.ast-avatar{background:var(--surface);border:1px solid var(--border);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;margin-top:2px;font-size:16px;display:flex}.ast-bubble{font-family:var(--font-body);color:var(--light);word-break:break-word;border-radius:12px;max-width:calc(100% - 44px);padding:10px 14px;font-size:13.5px;line-height:1.6}.ast-msg-user .ast-bubble{color:var(--light);background:#ff6b0026;border:1px solid #ff6b0040;border-radius:12px 12px 2px}.ast-msg-assistant .ast-bubble{background:var(--surface);border:1px solid var(--border);border-radius:12px 12px 12px 2px}.ast-bubble strong{color:var(--light);font-weight:700}.ast-bubble em{color:var(--muted);font-style:italic}.ast-inline-code{font-family:var(--font-mono);background:var(--surface-2);border:1px solid var(--border);color:var(--cyan);border-radius:3px;padding:1px 5px;font-size:12px}.ast-code{font-family:var(--font-mono);background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-sm);white-space:pre-wrap;color:var(--text);margin:6px 0;padding:10px 12px;font-size:12px;overflow-x:auto}.ast-h{font-family:var(--font-display);letter-spacing:.8px;text-transform:uppercase;margin:8px 0 4px}.ast-h1{color:var(--fire);font-size:17px}.ast-h2{color:var(--yellow);font-size:14px}.ast-h3{color:var(--muted);font-size:13px}.ast-bullet{margin:2px 0;padding-left:2px}.ast-num{font-variant-numeric:tabular-nums}.ast-spacer{height:6px}.ast-hr{border:none;border-top:1px solid var(--border);margin:8px 0}.ast-typing{align-items:center;gap:5px;min-width:56px;padding:12px 16px;display:flex}.ast-typing span{background:var(--dim);border-radius:50%;width:7px;height:7px;animation:1.2s ease-in-out infinite ast-bounce;display:inline-block}.ast-typing span:nth-child(2){animation-delay:.2s}.ast-typing span:nth-child(3){animation-delay:.4s}@keyframes ast-bounce{0%,80%,to{opacity:.4;transform:scale(.7)}40%{opacity:1;transform:scale(1)}}.ast-error{font-family:var(--font-mono);color:var(--red);border-radius:var(--r-sm);background:#f8717112;border:1px solid #f8717133;align-items:center;gap:8px;margin:4px 0;padding:8px 12px;font-size:11px;display:flex}.ast-error-icon{font-size:13px}.ast-error-retry{border:1px solid var(--red);color:var(--red);font-family:var(--font-mono);border-radius:var(--r-sm);cursor:pointer;white-space:nowrap;background:0 0;margin-left:auto;padding:2px 10px;font-size:10px;font-weight:700;transition:all .12s}.ast-error-retry:hover{background:#f871711a}.ast-input-bar{border-top:1px solid var(--border);background:var(--bg);flex-shrink:0;align-items:flex-end;gap:10px;padding:12px 20px 16px;display:flex}.ast-input{background:var(--surface);border:1px solid var(--border);color:var(--light);font-family:var(--font-body);resize:none;border-radius:10px;outline:none;flex:1;min-height:42px;max-height:160px;padding:10px 14px;font-size:13.5px;line-height:1.5;transition:border-color .15s;overflow-y:auto}.ast-input:focus{border-color:#ff6b0080}.ast-input::placeholder{color:var(--dim)}.ast-input:disabled{opacity:.6;cursor:not-allowed}.ast-send-btn{background:var(--fire);color:#fff;cursor:pointer;border:none;border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:40px;min-width:40px;height:40px;font-size:18px;line-height:1;transition:all .15s;display:flex}.ast-send-btn:hover:not(.disabled){opacity:.85;transform:scale(1.05)}.ast-send-btn.disabled{background:var(--stone);cursor:not-allowed;opacity:.5}@media (width<=767px){.ast-header{padding:10px 14px 8px}.ast-messages{padding:14px 12px 6px}.ast-input-bar{padding:8px 12px 12px}.ast-empty{padding:10px 0 20px}.ast-bubble{font-size:13px}}