.card{background:var(--color-background);border:1px solid var(--color-border);border-radius:var(--radius-card);padding:var(--space-5);transition:border-color var(--transition-base),box-shadow var(--transition-base)}.card-elevated,.card-interactive:hover{box-shadow:var(--shadow-sm)}.card-interactive:hover{border-color:var(--color-border-strong)}