@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--color-primary:#3b82f6;--color-primary-hover:#2563eb;--color-primary-dark:#1d4ed8;--color-primary-light:#eff6ff;--color-primary-border:#bfdbfe;--color-bg-app:#f9fafb;--color-bg-sidebar:#fff;--color-bg-content:#f9fafb;--color-bg-card:#fff;--color-border:#e5e7eb;--color-border-light:#f3f4f6;--color-text-primary:#1f2937;--color-text-secondary:#6b7280;--color-text-muted:#9ca3af;--color-text-white:#fff;--color-success:#15803d;--color-success-light:#dcfce7;--color-danger:#ef4444;--color-danger-light:#fef2f2;--color-danger-hover:#b91c1c;--color-warning:#d97706;--color-warning-light:#fef3c7;--color-user-bubble-from:#3b82f6;--color-user-bubble-to:#2563eb;--color-user-bubble-text:#fff;--sidebar-width:256px;--sidebar-bg:#fff;--sidebar-border:#e5e7eb;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;--space-6:24px;--space-8:32px;--space-10:40px;--radius-sm:6px;--radius-md:6px;--radius-lg:8px;--radius-xl:12px;--radius-full:9999px;--shadow-xs:0 1px 2px #0000000d;--shadow-sm:0 1px 3px 0 #0000001a, 0 1px 2px -1px #0000001a;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -4px #0000001a;--transition-fast:.15s cubic-bezier(.4,0,.2,1);--transition-normal:.2s cubic-bezier(.4,0,.2,1);--transition-slow:.3s cubic-bezier(.4,0,.2,1);--font-family:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-size-xs:12px;--font-size-sm:14px;--font-size-base:14px;--font-size-md:15px;--font-size-lg:18px;--font-size-xl:20px;--font-size-2xl:24px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{width:100%;height:100%}body{font-family:var(--font-family);font-size:var(--font-size-base);color:var(--color-text-primary);background-color:var(--color-bg-app);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.5}::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:0 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fadeIn{0%{opacity:0}to{opacity:1}}.dialog-box{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:var(--space-6);background:#fff;width:100%;max-width:420px;animation:.2s slideUp}@keyframes slideUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.dialog-icon{border-radius:var(--radius-full);background-color:var(--color-danger-light);width:44px;height:44px;color:var(--color-danger);margin-bottom:var(--space-4);justify-content:center;align-items:center;display:flex}.dialog-title{font-size:var(--font-size-lg);color:var(--color-text-primary);margin-bottom:var(--space-2);font-weight:700}.dialog-message{font-size:var(--font-size-base);color:var(--color-text-secondary);margin-bottom:var(--space-6);line-height:1.6}.dialog-actions{justify-content:flex-end;gap:var(--space-3);display:flex}.dialog-btn-cancel{border:1px solid var(--color-border);color:var(--color-text-secondary);padding:var(--space-2) 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