/* Email signature (/tools/email-signature): a white "mail client" canvas for the live preview, and the brand-color swatches. */
.sig-canvas { min-height: 15rem; padding: var(--space-24); border-radius: var(--space-16); background: #fff; color: #111; line-height: normal; overflow-x: auto; }
.sig-swatch { width: 3.2rem; height: 3.2rem; padding: 0; border-radius: var(--space-8); border: 2px solid transparent; box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18); }
.sig-swatch.is-active { border-color: #fff; }