.signal{--chat-background:#fff;--chat-foreground:#1f2937;--chat-header-background:#f8f9fa;--chat-header-foreground:#111827;--chat-header-border:#e5e7eb;--chat-header-muted:#4b5563;--chat-section-header-background:transparent;--chat-section-header-foreground:#6b7280;--chat-message-sender-background:#3a76f0;--chat-message-sender-foreground:#fff;--chat-message-receiver-background:#f1f1f1;--chat-message-receiver-foreground:#111827;--chat-message-timestamp-sender:#ffffffb3;--chat-message-timestamp-receiver:#4b5563;--chat-footer-background:#f8f9fa;--chat-footer-border:#e5e7eb;--chat-footer-muted:#6b7280;--chat-footer-input-background:#fff;--chat-footer-input-border:#d1d5db;--chat-footer-input-foreground:#4b5563}.signal.dark{--chat-background:#1b1c1f;--chat-foreground:#fff;--chat-header-background:#2c2e3a;--chat-header-foreground:#fff;--chat-header-border:#3a3d4a;--chat-header-muted:#b6b9c7;--chat-section-header-foreground:#9ca3af;--chat-message-receiver-background:#3a3d4a;--chat-message-receiver-foreground:#fff;--chat-message-timestamp-receiver:#b6b9c7;--chat-footer-background:#2c2e3a;--chat-footer-border:#3a3d4a;--chat-footer-muted:#b6b9c7;--chat-footer-input-background:#1b1c1f;--chat-footer-input-border:#3a3d4a;--chat-footer-input-foreground:#b6b9c7}