:root{--bg-dark: #0f172a;--bg-panel: rgba(30, 41, 59, .7);--primary: #3b82f6;--primary-hover: #2563eb;--text-main: #f8fafc;--text-muted: #94a3b8;--border: rgba(148, 163, 184, .1);--glass-border: 1px solid rgba(255, 255, 255, .1);--shadow: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06)}body{margin:0;font-family:Inter,system-ui,-apple-system,sans-serif;background-color:var(--bg-dark);color:var(--text-main);min-height:100vh;background-image:radial-gradient(circle at 10% 20%,rgba(59,130,246,.1) 0%,transparent 20%),radial-gradient(circle at 90% 80%,rgba(139,92,246,.1) 0%,transparent 20%)}.app-container{max-width:1400px;margin:0 auto;padding:2rem;height:100vh;box-sizing:border-box;display:flex;flex-direction:column}.app-header{text-align:center;margin-bottom:2rem;position:relative}.header-content{display:flex;justify-content:center;align-items:center;gap:1rem;position:relative}.app-header h1{font-size:2.5rem;margin:0;background:linear-gradient(to right,#60a5fa,#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.app-header p{color:var(--text-muted);margin-top:.5rem}.btn-admin-toggle{position:absolute;right:0;top:0;background:transparent;border:1px solid var(--border);color:var(--text-muted);padding:.5rem 1rem;border-radius:.5rem;cursor:pointer;font-size:.8rem;transition:all .2s}.btn-admin-toggle:hover{background:#ffffff0d;color:var(--text-main)}.main-content{display:flex;gap:2rem;flex:1;min-height:0}.left-column{flex:1;display:flex;flex-direction:column}.right-column{flex:2;display:flex;flex-direction:column;transition:all .3s ease}.right-column.full-width{flex:1;max-width:800px;margin:0 auto;width:100%}.glass-panel{background:var(--bg-panel);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:var(--glass-border);border-radius:1rem;padding:1.5rem;box-shadow:var(--shadow);display:flex;flex-direction:column;height:100%}h2{margin-top:0;font-size:1.25rem;color:var(--text-main)}.subtitle{color:var(--text-muted);font-size:.875rem;margin-bottom:1rem}.knowledge-input{flex:1;background:#0f172a80;border:var(--glass-border);border-radius:.5rem;padding:1rem;color:var(--text-main);font-family:inherit;resize:none;margin-bottom:1rem;font-size:.9rem}.knowledge-input:focus{outline:none;border-color:var(--primary)}.actions{display:flex;align-items:center;gap:1rem}.btn-primary{background:var(--primary);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:.5rem;font-weight:600;cursor:pointer;transition:background .2s}.btn-primary:hover{background:var(--primary-hover)}.btn-primary:disabled{opacity:.7;cursor:not-allowed}.btn-secondary{background:transparent;color:var(--text-muted);border:1px solid var(--border);padding:.75rem 1.5rem;border-radius:.5rem;font-weight:600;cursor:pointer;transition:all .2s}.btn-secondary:hover{background:#ffffff0d;color:var(--text-main)}.status-msg{font-size:.875rem;color:#4ade80}.chat-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;border-bottom:var(--glass-border);padding-bottom:1rem}.live-indicator{font-size:.75rem;color:#4ade80;display:flex;align-items:center;gap:.25rem}.messages-area{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:1rem;padding-right:.5rem;margin-bottom:1rem}.message-row{display:flex}.message-row.user{justify-content:flex-end}.message-row.bot{justify-content:flex-start}.message-bubble{max-width:80%;padding:1rem;border-radius:1rem;line-height:1.5}.message-bubble.user{background:var(--primary);color:#fff;border-bottom-right-radius:.25rem}.message-bubble.bot{background:#334155cc;color:var(--text-main);border-bottom-left-radius:.25rem}.evidence-tag{display:block;font-size:.7rem;margin-top:.5rem;opacity:.7;font-style:italic}.input-area{display:flex;gap:.5rem}.input-area input{flex:1;background:#0f172a80;border:var(--glass-border);border-radius:.5rem;padding:.75rem 1rem;color:var(--text-main)}.input-area input:focus{outline:none;border-color:var(--primary)}.btn-send{background:var(--primary);border:none;color:#fff;width:3rem;border-radius:.5rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s}.btn-send:hover{background:var(--primary-hover)}.modal-overlay{position:fixed;inset:0;background:#000000b3;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;justify-content:center;align-items:center;z-index:1000}.modal-content{width:100%;max-width:400px;height:auto}.login-input{width:100%;background:#0f172a80;border:var(--glass-border);border-radius:.5rem;padding:.75rem 1rem;color:var(--text-main);margin-bottom:1rem;box-sizing:border-box}.login-input:focus{outline:none;border-color:var(--primary)}.modal-actions{display:flex;justify-content:flex-end;gap:1rem}.error-msg{color:#ef4444;font-size:.875rem;margin-bottom:1rem;margin-top:-.5rem}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#94a3b833;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#94a3b866}