:root{--bg-void: #010409;--bg-base: #040c1a;--bg-panel: #060f22;--bg-card: #08132e;--bg-elevated: #0d1c3f;--bg-hover: #112247;--bg-input: #070e1f;--blue-900: #0f2460;--blue-700: #1446b0;--blue-500: #1d6ef5;--blue-400: #3b82f6;--blue-300: #60a5fa;--blue-200: #93c5fd;--cyan-400: #22d3ee;--cyan-300: #67e8f9;--border-dim: rgba(59,130,246,.08);--border: rgba(59,130,246,.18);--border-bright: rgba(59,130,246,.38);--text-primary: #ccd9f0;--text-secondary: #6e90c0;--text-muted: #2d4470;--success: #10b981;--error: #ef4444;--warning: 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var(--border)}.btn-secondary:hover{background:linear-gradient(135deg,#1d6ef51f,#22d3ee0f);border-color:var(--border-bright)}.app-container{display:none;height:100vh;width:100%;background:var(--bg-base);flex-direction:column;overflow:hidden}.app-header{height:56px;background:linear-gradient(90deg,var(--bg-panel) 0%,rgba(8,19,46,.95) 50%,var(--bg-panel) 100%);border-bottom:1px solid var(--border-dim);padding:0 20px;display:flex;justify-content:space-between;align-items:center;flex-shrink:0;position:relative}.app-header:after{content:"";position:absolute;bottom:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent 0%,var(--blue-700) 20%,var(--blue-500) 40%,var(--cyan-400) 60%,var(--blue-500) 80%,transparent 100%);opacity:.7}.app-title{font-size:16px;font-weight:700;letter-spacing:-.2px;display:flex;align-items:center;gap:9px;background:linear-gradient(90deg,var(--blue-300) 0%,var(--cyan-400) 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solid var(--border-dim);flex-shrink:0}.chat-header-content{display:flex;align-items:center;padding:13px 18px;width:100%;justify-content:space-between}.chat-header-avatar{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--blue-700) 0%,var(--blue-500) 60%,var(--cyan-400) 100%);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;margin-right:12px;flex-shrink:0;box-shadow:0 0 10px #1d6ef54d}.chat-header-info{flex:1}.chat-header-info h3{color:var(--text-primary);font-size:14px;font-weight:600;display:flex;align-items:center;gap:8px;margin-bottom:2px}.chat-header-info p{color:var(--text-muted);font-size:11px;font-family:JetBrains Mono,monospace}.messages-container{flex:1;overflow-y:auto;overflow-x:hidden;min-height:0;padding:18px 20px;display:flex;flex-direction:column;gap:3px}.message{display:flex;margin-bottom:3px;animation:fadeUp .18s 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